AM100JXVAJH - Air-conditioner SAMSUNG - Free user manual and instructions

Product Type	Outdoor unit for DVM S multi-system air conditioner
Model	Samsung AM100JXVAJH
Refrigerant	R-410A
Cooling Capacity	28.0 kW (95,500 Btu/h)
Heating Capacity	31.5 kW (107,500 Btu/h)
Power Supply	460V, 3-phase, 60Hz
Maximum Operating Pressure	4.1 MPa (594.6 psi)
Base Dimensions (W x D)	880 mm x 740 mm (34.65 x 29.13 in)
Maximum Connectable Indoor Units	18
Compressor Type	Inverter (DVM S)
Pipe Connections	Liquid: 9.52 mm (3/8 in); Gas: 22.22 mm (7/8 in)
Maximum Piping Length	90 m (295.28 ft) without size-up
Maximum Height Difference (IDU/ODU)	50 m (164 ft) (ODU above IDU)
Installation Location	Outdoor, well-ventilated, away from corrosive gases
Protection Features	Overcurrent, leakage, high pressure, anti-vibration
Operation Modes	Cooling, heating, auto, fan, defrost
Auto Trial Operation	Yes (refrigerant detection, valve check)
Maintenance	Clean heat exchanger, check drainage, anti-corrosion near seashore
Safety Standards	Grounding required, exclusive circuit breaker, R-410A certified tools

Frequently Asked Questions - AM100JXVAJH SAMSUNG

What refrigerant is used in the Samsung AM100JXVAJH?

The Samsung AM100JXVAJH uses R-410A refrigerant, which is a high-pressure quasi-azeotropic blend. Use only certified pipes and tools designed for R-410A.

What is the maximum number of indoor units that can be connected?

A maximum of 18 indoor units can be connected to the AM100JXVAJH, with a total capacity between 50% and 130% of the outdoor unit capacity (14.0 to 36.4 kW cooling).

What are the power requirements for installation?

The unit requires a 460V, 3-phase, 60Hz power supply. An exclusive circuit breaker (MCCB or ELB) must be installed, and proper grounding is essential.

How long should the crank case heater preheat before operation?

Supply power to the outdoor unit at least 6 hours before trial operation to preheat the crank case heater and protect the compressor.

What is the allowable piping length between outdoor and indoor units?

The maximum piping length is 90 meters (295 ft) without pipe size-up. If exceeding 90 m, increase the main pipe diameter by one grade. The maximum height difference is 50 m (164 ft) with the outdoor unit above.

How do I perform auto trial operation?

After powering on for 6 hours, press the K2 key on the outdoor unit PCB five times (Heating mode) or six times (Cooling mode). The unit will automatically check valves, refrigerant charge, and pressure sensors. Operation takes 20 minutes to 2 hours.

What to do if error E503 appears?

E503 indicates an inspection required. Check that the service valves are open, the 4-way valve and main EEV operate correctly, and the refrigerant charge is appropriate. Perform a 30-minute trial operation, then 10-minute fan mode, and restart auto trial.

How to detect refrigerant amount?

Press the K2 switch five times to enter refrigerant detection mode (display 'K9'). The unit will check stability and report 'Normal', 'Excessive', or 'Insufficient'. Add or remove 5% of total refrigerant based on the result.

What maintenance is required for installation near the seashore?

Install a protection wall, periodically wash the unit with water to remove salt, and apply anti-corrosion treatment (e.g., R-Pro or water-repellent grease) every 3 months. Ensure good drainage.

Can the outdoor unit be installed indoors or in a confined space?

No, the unit must be installed outdoors in a well-ventilated area with sufficient service space. Ensure minimum clearances of 100 mm on sides and 500 mm in front. In cold regions, install a snow prevention duct.

USER MANUAL AM100JXVAJH SAMSUNG

Air Conditioner installation manual

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Thank you for purchasing this Samsung product.

Contents

Safety precautions 3

Preparing for installation 6

Selecting installation location 21

Space requirement for installation 23

Accessories 25

Base construction and installation of the outdoor unit 26

Installing the wind/snow prevention duct 31

Refrigerant pipe installation 33

Electrical wiring work 56

Air tightness test and vacuum drying 68

Pipe insulation 70

Charging additional refrigerant 74

Basic segment display 76

Setting outdoor unit option switch and key function 76

Things to check after completing the installation 86

Inspection and test operation 88

Automatic refrigerant amount detection function 92

Safety precautions

Please follow the following safety information for safety of the installer and the user.

* DVM S air conditioner uses R-410A refrigerant.

• When using R-410A, moisture or foreign substances may affect the performance and reliability of the product. Safety precautions must be obeyed when installing the refrigerant pipe.
• The designed maximum pressure of the system is 4.1MPa(594.6 psi) and therefore select appropriate material and thickness according to the regulations.
• R-410A is a quasi-azeotrope of two refrigerants and it has to be charged in liquid phase when filling the refrigerant. (If you charge vapor refrigerant, it may change the blend of the refrigerant and cause product malfunction.)

* You must connect the indoor units for R-410A refrigerant. Refer to product catalog to find out the models names for connectable indoor units. (If you connect the indoor units that are not designed for R-410A, it cannot operate normally.)

* After completing the installation and trial operation, explain to the user how to use and maintain the product. Also, hand over this installation manual so that it can be stored by the user.
* Manufacturer is not responsible for the incidents occurred by improper installation. Installer is responsible for any installation related claims from the user occurred by neglecting warnings and cautions stated in this manual. (Installer will be responsible for any service charges that may occur)
* Generally, system air conditioners should not be relocated after installation. But when it has to be relocated for inevitable reasons, please contact Samsung's qualified dealers for system air conditioners.

- Hazards or unsafe practices that may result in severe personal injury or death.

- Hazards or unsafe practices that may result in minor personal injury (to installer/user) or property damage.

SEVERE WARNING SIGNS

Consult qualified installer or dealer for installation.

▶ When installation is done by unqualified person, problems such as water leakage, electric shock or fire may occur.

Installation work must be done properly according to this installation manual.

▶ When installation is not done properly, it may cause water leakage, electric shock or fire.

When installing the unit in a small room, take measure to keep the refrigerant concentration from exceeding allowable safety limits in case of refrigerant leakage. Consult the dealer for precautionary measure before the installation.

▶ When refrigerant leaks and exceed dangerous concentration level, it may cause suffocation accidents.

If any gas or impurities, except R-410A refrigerant, come into the refrigerant pipe, serious problem may occur and it may cause injury.

Use the supplied accessories, specified components and tools for the installation.

▶ Do not use the pipe and the installation product used for the R-22 refrigerant.

▶ Failure to use the specified components can cause product fall down, water leakage, electrical shock, and fire. (The pipe and flare components used for R-22 refrigerant must not be used)

Install the outdoor unit on a hard and even place that can support its weight.

▶ If the place cannot support its weight, the outdoor unit may fall down and it may cause injury.

Safety precautions

Check the following before installation and service work.

▶ Before welding, remove dangerous and inflammable things that may cause an explosion and fire around the work.

Before welding, remove the refrigerant from inside the pipe or the product.

- If you perform welding while refrigerant is in the pipe, it may increase the pressure of the refrigerant and cause the pipe to burst. If the pipe bursts or explodes, it may cause severe injury to the installer.

▶ When welding, use the nitrogen gas to eliminate oxidation inside the pipe.

Do not modify the product on your own.

▶ Potential risk of electric shock, fire, product failure or injury.

Fix the outdoor unit securely on foundation to resist strong wind or earthquake.

▶ If the outdoor unit is not properly fixed, it turns over and accidents may occur.

Electric work must be done by qualified persons, complying the national wiring regulations and installed according to the instruction stated in the installation manual with leased circuit.

▶ Capacity shortage on the leased circuit and improper installation may cause electric shock or fire.

Make sure to perform grounding work.

▶ Do not connect the ground wire to a gas pipe, water pipe, lightning rod or telephone grounding. Improper grounding could cause electric shock.

Wiring must be connected with the designated wires and it must be fixed securely so that it does not apply any external force to the connection part of the terminals.

▶ If connection for fixation is not properly done, it may cause heat generation or fire.

Neatly arrange the wires in the electrical parts to make sure that electrical cover is closed securely without any gaps.

▶ If the cover is not properly closed, heat may generate on the electrical terminal and cause electric shock or fire.

Exclusive circuit breaker (MCCB, ELB) must be installed to the power supply.

▶ When overcurrent or current leakage occurs with no circuit breaker installed, power will not be cut-off and it may cause electric shock or fire.

▶ Do not use damaged parts. It may cause fire or electric shock.

You must cut-off the power before you work on, or adjust any power supply part for product installation, maintenance, repair or any other services.

▶ There is risk of electric shock.

Even when the power is off, it is dangerous when you come in contact with inverter PCB, fan PCB since high pressure DC voltage is charged to those parts.

When replacing/repairing the PCB, cut-off the power and wait until the DC voltage is discharged before replacing/repairing them. (Wait for more than 15 minutes to allow it to discharge naturally.)

If the refrigerant gas leaks during the installation, you should ventilate the room.

▶ When the refrigerant gas gets in contact with flammable substance, it may generate toxic gas.

Gas leakage must be checked after installation is completed.

▶ When the refrigerant gas gets in contact with flammable substance, it may generate toxic gas.

You can get a frostbite if you get in contact with the leaked refrigerant gas.

Supply power to the product during winter time since the product will operate in protection mode itself when the temperature decrease below 0^(32^) .

▶ If you cut-off the power, compressor protection mode cannot be operated and may cause damage to the product.

Do not install the drain pipe directly to the bottom part of the outdoor unit and built a proper drainage so that water drains out smoothly. If not, pipe may freeze or bursts during winter time and cause damage to the product or water leakage.

▶ When the draining work is not done properly, water leak may occur and cause property damage.

Install the power cable and communication cable of the indoor and outdoor unit at least 1.5m(4.92ft) away from the electric appliances and install it at least 2m(6.56ft) away from the lightning conductor.

▶ Noise may be generated from the electronic devices, depending on the status of the electric wave.

Install the outdoor unit within the angle stated in the table, according to the height of the building.

▶ Do not leave the refrigerant container under the hot sunlight. (There is risk of explosion.)

▶ You must use the appropriate pipes according to the standard since the pressure of the refrigerant is very high.

▶ Make sure that the pipes does not get any weaker by welding it too much.

▶ Make sure to install the product away from children's reach. (Sharp parts of the heat exchanger is may cause personal injury and when parts of the product gets damage, it may decrease product's performance.)

Lighting rod Protective angle: 25°~55°

Height of the building Protection control
20m(65.6 ft) or less 55°
40m(131.2 ft) or less 35°
60m(196.9 ft) or less 25°

Install the indoor unit away from lighting apparatus that uses ballast stabilizer.

▶ If you use the wireless remote control, it may not operate normally due to ballast stabilizer.
Do not install the product in following places.
Place where outdoor unit's noise and warm air may disturb neighbors. (It may cause property loss.)
▶ Do not leave any obstacles around the inlet and outlet of the product. (It may cause damage or accidents.)

The place where there is mineral oil or arsenic acid.

- Those parts may get damaged due to burned resin and cause water leakage or product may fall.

- The efficiency of the heat exchanger may reduce or product may break.

The place where corrosive gas such as sulfurous acid gas generates from the vent pipe or air outlet.

- The copper pipe or connection pipe may corrode and refrigerant may leak.

The place where there is a machine that generates electromagnetic waves.

- The air conditioner may not operate normally due to problems in control system.

The place where there is a danger of combustible gas leakage or place where thinner or gasoline is handled.

- (There is risk of fire or explosion.)

The place with carbon fiber or flammable dust.
The place near seashore or hot spring where there is risk of outdoor unit corrosion.

Safety precautions

Changes in DVM S (inverter) compare to conventional models that has to noted when installing

For optimal distribution of the refrigerant, you must use Y-joint as branch joint for connecting outdoor units. (To not use T-joint)
▶ You cannot operate normally if you do not complete the trial operation through outdoor unit key mode. You must use KEY MODE to run trial operation.

▶ DVM S air conditioner uses R-410A refrigerant.

▶ Check the compatibility of other products such as indoor unit, EEV kits etc. which will be connected to DVM S.
▶ Make sure to note that outdoor unit combination is different from DVM PLUS III and IV.
The length of maximum piping, level difference, the quantity of connectable indoor units, the installation at the outdoor joints and the outdoor unit combinations are different from the conventional models.
If the pipe length is over 2m(6.56ft) between outdoor units, make traps to prevent oil stagnation. Oil stagnation may occur when outdoor unit at the end of module stops while other outdoor units are still in operation.

Preparing for installation

Outdoor unit classification

Classification Small type Large A type Large B type
Appearance
Models AM080/100/120***		AM140/160/180/200***, AM220JXVAJH	AM220/240/260JXVAFH

Packaging material disposition

• Safely store or dispose the packaging materials.

• Sharp metals such as nails or wooden material packaging that may break into pieces become a cause for personal injury.
• Make sure to store or dispose the vinyl type packaging material to keep it out of reach of children. Children may put them over their face, which is very dangerous since it may lead them to suffocation.

Outdoor unit combination

▶ Make sure to use an indoor unit that is compatible with DVM S.
▶ Indoor units can be connected within the range indicated in following table.

▶ If the total capacity of the connected indoor units exceeds the indicated maximum capacity, cooling and heating capacity of the indoor unit may decrease.
▶ Total capacity of the connected indoor units can be allowed from 50% to 130% of the total outdoor unit capacity. 0.5 × (Outdoor unit capacity) ≤ Total capacity of the connected indoor units ≤ 1.3 × (Outdoor unit capacity)
* You can connect maximum 64 indoor units to the outdoor unit. Maximum quantity of connectable indoor unit is set to 64 since outdoor unit only support up to 64 communication address. Indoor unit address can be assigned from 0\~63. If the indoor unit address was assigned from 64\~79, E201 error will occur.
* Maximum 32 Wall-mount type indoor units with EEV (AM****NQDCH*) can be connected.

• Installation combination must be complied when composing outdoor unit combination.

Standard type (AM****JXVAF* Series)

Model name for combination		AM080JXVAFH/AZ A	AM100JXVAFH/AZ AM	120JXVAFH/AZ AM140	JXVAFH/AZ AM160JX	VAFH/AZ
Number of individual outdoor units 1		1	1	1	1
Combined outdoor unit	AM080JXVAFH 1
	AM100JXVAFH 1
	AM120JXVAFH 1
	AM140JXVAFH 1
	AM160JXVAFH 1
	AM180JXVAFH
	AM200JXVAFH
Rated capacity	Cooling (kW) 22.4	28.0	33.6	40.0	45.0
	Cooling (Btu/h)	76	400	95	500	114
	Heating (kW)	25.2	31.5	37.8	45.0	50.4
	Heating (Btu/h)	86	000	107	500	129
Total capacity of the connected indoor units (Cooling)	Minimum (kW)	11.2	14.0	16.8	20.0	22.5
	Minimum (Btu/h)	38	200	47	800	57
	Maximum (kW)	29.1		36.4	43.7	52.0
	Maximum (Btu/h)	99	400	124	200	149
Maximum number of connectable indoor units		14		18	21	26

Preparing for installation

Model name for combination		AM180JXVAFH/AZ	AM200JXVAFH/AZ	AM220JXVAFH1AZ	AM240JXVAFH1AZ	AM260JXVAFH1AZ
Number of individual outdoor units		1	1	2	2	2
Combined outdoor unit	AM080JXVAFH
	AM100JXVAFH			1
	AM120JXVAFH			1	2	1
	AM140JXVAFH					1
	AM160JXVAFH
	AM180JXVAFH	1
	AM200JXVAFH		1
Rated capacity	Cooling (kW)	50.4 56.0 61.6	67.2 73.6
	Cooling (Btu/h)	172 000 191 100	210 100 229 200 251	100
	Heating (kW)	56.7 63.0 69.3	75.6 82.8
	Heating (Btu/h)	193 500 215 000	236 500 258 000 282	500
Total capacity of the connected indoor units (Cooling)	Minimum (kW)	25.2 28.0 30.8	33.6 36.8
	Minimum (Btu/h)	86 000 95 500	105 100 114 600 125	500
	Maximum (kW)	65.5 72.8 80.1	87.4 95.7
	Maximum (Btu/h)	223 600 248 400	273 200 298 000 326	400
Maximum number of connectable indoor units		32 36 40 43 47

Model name for combination		AM280JXVAFH1AZ	AM300JXVAFH1AZ	AM320JXVAFH1AZ	AM340JXVAFH1AZ	AM360JXVAFH1AZ
Number of individual outdoor units		2	2	2	2	2
Combined outdoor unit	AM080JXVAFH
	AM100JXVAFH
	AM120JXVAFH	1	1	1
	AM140JXVAFH				1
	AM160JXVAFH	1				1
	AM180JXVAFH		1
	AM200JXVAFH			1	1	1
Rated capacity	Cooling (kW)	78.6 84.0 89.6	96.0 101.0
	Cooling (Btu/h)	268 100 286 600	305 700 327 600 344	600
	Heating (kW)	88.2 94.5 100	8 108.0 113.4
	Heating (Btu/h)	301 100 322 500	344 000 368 500 387	000
Total capacity of the connected indoor units (Cooling)	Minimum (kW)	39.3 42.0 44.8	48.0 50.5
	Minimum (Btu/h)	134 100 143 300	152 800 163 700 172	300
	Maximum (kW)	102.2 109.2 11	6.5 124.8 131.3
	Maximum (Btu/h)	348 600 372 600	397 400 422 300 448	000
Maximum number of connectable indoor units		51 54 58 62 64
Model name for combination		AM380JXVAFH1AZ A	AM400JXVAFH1AZ AM	AM420JXVAFH1AZ AM	AM440JXVAFH1AZ AM	AM460JXVAFH1AZ
Number of individual outdoor units		2	2	3	3	3
Combined outdoor unit	AM080JXVAFH
	AM100JXVAFH			1
	AM120JXVAFH			1	2	1
	AM140JXVAFH					1
	AM160JXVAFH
	AM180JXVAFH	1
	AM200JXVAFH	1	2	1	1	1
Rated capacity	Cooling (kW)	106.0 112.0 117.6 123.2 129.6
	Cooling (Btu/h)	363 100 382 200 401 200 420 300 442 200
	Heating (kW)	119.7 126.0 132.3 138.6 145.8
	Heating (Btu/h)	408 500 430 000 451 500 473 000 497 500
Total capacity of the connected indoor units (Cooling)	Minimum (kW)	53.2 56.0 58.8 61.6 64.8
	Minimum (Btu/h)	181 500 191 000 200 600 210 100 221 000
	Maximum (kW)	138.3 145.6 152.9 160.2 168.5
	Maximum (Btu/h)	472 000 496 800 521 600 546 400 574 800
Maximum number of connectable indoor units		64 64 64 64 64

Model name for combination		AM480JXVAFH1AZ	AM500JXVAFH1AZ	AM520JXVAFH1AZ	AM540JXVAFH1AZ	AM560JXVAFH1AZ
Number of individual outdoor units		3	3	3	3	3
Combined outdoor unit	AM080JXVAFH
	AM100JXVAFH
	AM120JXVAFH	1	1	1
	AM140JXVAFH				1
	AM160JXVAFH	1				1
	AM180JXVAFH		1
	AM200JXVAFH	1	1	2	2	2
Rated capacity	Cooling (kW)	134.6 140.0 145.6 152.0 157.0
	Cooling (Btu/h)	459 200 477 700 496 800 518 700 535 700
	Heating (kW)	151.2 157.5 163.8 171.0 176.4
	Heating (Btu/h)	516 000 537 500 559 000 583 500 602 000
Total capacity of the connected indoor units (Cooling)	Minimum (kW)	67.3 70.0 72.8 76.0 78.5
	Minimum (Btu/h)	229 600 238 800 248 300 259 200 267 800
	Maximum (kW)	175.0 182.0 189.3 197.6 204.1
	Maximum (Btu/h)	597 000 621 000 645 800 674 200 696 400
Maximum number of connectable indoor units		64 64 64 64 64

Preparing for installation

Model name for combination		AM580JXVAFH1AZ AM600JXVAFH1AZ AM620JXVAFH1AZ AM640JXVAFH1AZ
Number of individual outdoor units		3	3	4	4
Combined outdoor unit	AM080JXVAFH
	AM100JXVAFH			1
	AM120JXVAFH			1	2
	AM140JXVAFH
	AM160JXVAFH
	AM180JXVAFH	1
	AM200JXVAFH	2	3	2	2
Rated capacity	Cooling (kW)	162.4 168.0 173.6	179.2
	Cooling (Btu/h)	554 200 573 300 592 300 611 400
	Heating (kW)	182.7 189.0 195.3	201.6
	Heating (Btu/h)	623 500 645 000 666 500 688 000
Total capacity of the connected indoor units (Cooling)	Minimum (kW)	81.2 84.0 86.8 89.6
	Minimum (Btu/h)	277 000 286 500 296 200 305 600
	Maximum (kW)	211.1 218.4 225.7	233.0
	Maximum (Btu/h)	720 400 745 200 770 000 794 800
Maximum number of connectable indoor units		64 64 64 64

Model name for combination		AM660JXVAFH1AZ AM680JXVAFH1AZ AM700JXVAFH1AZ AM720JXVAFH1AZ
Number of individual outdoor units		4	4	4	4
Combined outdoor unit	AM080JXVAFH
	AM100JXVAFH
	AM120JXVAFH	1	1	1	1
	AM140JXVAFH	1
	AM160JXVAFH		1
	AM180JXVAFH			1
	AM200JXVAFH	2	2	2	3
Rated capacity	Cooling (kW)	185.6 190.6 196.0 201.6
	Cooling (Btu/h)	633 300 650 300 668 800 687 900
	Heating (kW)	208.8 214.2 220.5 226.8
	Heating (Btu/h)	712 500 731 000 752 500 774 000
Total capacity of the connected indoor units (Cooling)	Minimum (kW)	92.8 95.3 98.0 100.8
	Minimum (Btu/h)	316 500 325 100 334 300 343 800
	Maximum (kW)	241.3 247.8 254.8 262.1
	Maximum (Btu/h)	823 200 845 400 869 400 894 200
Maximum number of connectable indoor units		64 64 64 64
Model name for combination		AM740JXVAFH1AZ AM760JXVAFH1AZ		AM780JXVAFH1AZ AM800JXVAFH1AZ
Number of individual outdoor units		4	4	4	4
Combined outdoor unit	AM080JXVAFH
	AM100JXVAFH
	AM120JXVAFH
	AM140JXVAFH	1
	AM160JXVAFH		1
	AM180JXVAFH			1
	AM200JXVAFH	3	3	3	4
Rated capacity	Cooling (kW)	208.0 213.0 218.4	224.0
	Cooling (Btu/h)	709 800 726 800 745 300 764 400
	Heating (kW)	234.0 239.4 245.7	252.0
	Heating (Btu/h)	798 500 817 000 838 500 860 000
Total capacity of the connected indoor units (Cooling)	Minimum (kW)	104.0 106.5 109.2	112.0
	Minimum (Btu/h)	354 700 363 300 372 500 382 000
	Maximum (kW)	270.4 276.9 283.9	291.2
	Maximum (Btu/h)	922 600 944 800 968 800 993 600
Maximum number of connectable indoor units		64 64 64 64

Compact type (AM****JXVAF* Series)

Model name for combination		AM080JXVAFH/AZ	AM100JXVAFH/AZ AM	120JXVAFH/AZ AM140	JXVAFH/AZ AM160JX	VAFH/AZ
Number of individual outdoor units		1	1	1	1	1
Combined outdoor unit	AM080JXVAFH	1
	AM100JXVAFH		1
	AM120JXVAFH			1
	AM140JXVAFH				1
	AM160JXVAFH					1
	AM180JXVAFH
	AM200JXVAFH
	AM220JXVAFH
	AM240JXVAFH
	AM260JXVAFH
Rated capacity	Cooling (kW)	22.4 28.0 33.6	40.0 45.0
	Cooling (Btu/h)	76 400 95 500	114 600 136 500 153 500
	Heating (kW)	25.2 31.5 37.8	45.0 50.4
	Heating (Btu/h)	86 000 107 500	129 000 153 500 172 000
Total capacity of the connected indoor units (Cooling)	Minimum (kW)	11.2 14.0 16.8	20.0 22.5
	Minimum (Btu/h)	38 200 47 800	57 300 68 200 76 800
	Maximum (kW)	29.1 36.4 43.7	52.0 58.5
	Maximum (Btu/h)	99 400 124 200	149 000 177 400 199 600
Maximum number of connectable indoor units		14 18 21 26 29

Preparing for installation

Model name for combination		AM180JXVAFH/AZ	AM200JXVAFH/AZ	AM220JXVAFH/AZ	AM240JXVAFH/AZ	AM260JXVAFH/AZ
Number of individual outdoor units		1	1	1	1	1
Combined outdoor unit	AM080JXVAFH
	AM100JXVAFH
	AM120JXVAFH
	AM140JXVAFH
	AM160JXVAFH
	AM180JXVAFH	1
	AM200JXVAFH		1
	AM220JXVAFH			1
	AM240JXVAFH				1
	AM260JXVAFH					1
Rated capacity	Cooling (kW)	50.4 56.0 61.6	67.2 72.8
	Cooling (Btu/h)	172 000 191 100	210 200 229 300 248	400
	Heating (kW)	56.7 63.0 69.3	75.6 81.9
	Heating (Btu/h)	193 500 215 000	236 500 258 000 279	500
Total capacity of the connected indoor units (Cooling)	Minimum (kW)	25.2 28.0 30.8	33.6 36.4
	Minimum (Btu/h)	86 000 95 500	105 100 114 600 124	200
	Maximum (kW)	65.5 72.8 80.1	87.4 94.6
	Maximum (Btu/h)	223 600 248 400	273 200 298 100 322	900
Maximum number of connectable indoor units		32 36 40 43 47

Model name for combination		AM280JXVAFH2AZ	AM300JXVAFH2AZ	AM320JXVAFH2AZ	AM340JXVAFH2AZ	AM360JXVAFH2AZ
Number of individual outdoor units		2	2	2	2	2
Combined outdoor unit	AM080JXVAFH			1	1
	AM100JXVAFH		1			1
	AM120JXVAFH	1
	AM140JXVAFH
	AM160JXVAFH	1
	AM180JXVAFH
	AM200JXVAFH		1
	AM220JXVAFH
	AM240JXVAFH			1
	AM260JXVAFH				1	1
Rated capacity	Cooling (kW)	78.6 84.0 89.6	95.2 100.8
	Cooling (Btu/h)	268 100 286 600	305 700 324 800 343	900
	Heating (kW)	88.2 94.5 100	8 107.1 113.4
	Heating (Btu/h)	301 000 322 500	344 000 365 500 387	000
Total capacity of the connected indoor units (Cooling)	Minimum (kW)	39.3 42.0 44.8	47.6 50.4
	Minimum (Btu/h)	134 100 143 300	152 900 162 400 172	000
	Maximum (kW)	102.2 109.2 11	6.5 123.8 131.0
	Maximum (Btu/h)	348 500 372 600	397 400 422 200 447	100
Maximum number of connectable indoor units		51 54 58 61 64
Model name for combination		AM380JXVAFH2AZ	AM400JXVAFH2AZ	AM420JXVAFH2AZ	AM440JXVAFH2AZ	AM460JXVAFH2AZ
Number of individual outdoor units		2	2	2	2	2
Combined outdoor unit	AM080JXVAFH
	AM100JXVAFH
	AM120JXVAFH	1
	AM140JXVAFH		1
	AM160JXVAFH			1
	AM180JXVAFH				1
	AM200JXVAFH					1
	AM220JXVAFH
	AM240JXVAFH
	AM260JXVAFH	1	1	1	1	1
Rated capacity	Cooling (kW)	106.4 112.8 117.8 123.2 128.8
	Cooling (Btu/h)	363 000 384 900 401 900 420 400 439 500
	Heating (kW)	119.7 126.9 132.3 138.6 144.9
	Heating (Btu/h)	408 500 433 000 451 500 473 000 494 500
Total capacity of the connected indoor units (Cooling)	Minimum (kW)	53.2 56.4 58.9 61.6 64.4
	Minimum (Btu/h)	181 500 192 500 201 000 210 200 219 800
	Maximum (kW)	138.3 146.6 153.1 160.2 167.4
	Maximum (Btu/h)	471 900 500 400 522 500 546 500 571 400
Maximum number of connectable indoor units		64 64 64 64 64

Model name for combination		AM480JXVAFH2AZ	AM500JXVAFH2AZ	AM520JXVAFH2AZ	AM540JXVAFH2AZ	AM560JXVAFH2AZ
Number of individual outdoor units		2	2	2	3	3
Combined outdoor unit	AM080JXVAFH
	AM100JXVAFH					1
	AM120JXVAFH				1
	AM140JXVAFH
	AM160JXVAFH				1
	AM180JXVAFH
	AM200JXVAFH					1
	AM220JXVAFH	1
	AM240JXVAFH		1
	AM260JXVAFH	1	1	2	1	1
Rated capacity	Cooling (kW)	134.4 140.0 145.6 151.4 156.8
	Cooling (Btu/h)	458 600 477 700 496 800 516 500 535 000
	Heating (kW)	151.2 157.5 163.8 170.1 176.4
	Heating (Btu/h)	516 000 537 500 559 000 580 500 602 000
Total capacity of the connected indoor units (Cooling)	Minimum (kW)	67.2 70.0 72.8 75.7 78.4
	Minimum (Btu/h)	229 300 238 900 248 400 258 300 267 500
	Maximum (kW)	174.7 182.0 189.3 196.8 203.8
	Maximum (Btu/h)	596 200 621 000 645 800 671 500 695 500
Maximum number of connectable indoor units		64 64 64 64 64

Preparing for installation

Model name for combination		AM580JXVAFH2AZ AM600JXVAFH2AZ AM620JXVAFH2AZ AM640JXVAFH2AZ
Number of individual outdoor units		3	3	3	3
Combined outdoor unit	AM080JXVAFH	1	1
	AM100JXVAFH			1
	AM120JXVAFH				1
	AM140JXVAFH
	AM160JXVAFH
	AM180JXVAFH
	AM200JXVAFH
	AM220JXVAFH
	AM240JXVAFH	1
	AM260JXVAFH	1	2	2	2
Rated capacity	Cooling (kW)	162.4 168.0 173.6 179.2
	Cooling (Btu/h)	554 100 573 200 592 300 611 400
	Heating (kW)	182.7 189.0 195.3 201.6
	Heating (Btu/h)	623 500 645 000 666 500 688 000
Total capacity of the connected indoor units (Cooling)	Minimum (kW)	81.2 84.0 86.8 89.6
	Minimum (Btu/h)	277 100 286 600 296 200 305 700
	Maximum (kW)	211.1 218.4 225.7 233.0
	Maximum (Btu/h)	720 300 745 200 770 000 794 800
Maximum number of connectable indoor units		64 64 64 64

Model name for combination		AM660JXVAFH2AZ AM680JXVAFH2AZ AM700JXVAFH2AZ AM720JXVAFH2AZ
Number of individual outdoor units		3	3	3	3
Combined outdoor unit	AM080JXVAFH
	AM100JXVAFH
	AM120JXVAFH
	AM140JXVAFH	1
	AM160JXVAFH		1
	AM180JXVAFH			1
	AM200JXVAFH				1
	AM220JXVAFH
	AM240JXVAFH
	AM260JXVAFH	2	2	2	2
Rated capacity	Cooling (kW)	185.6 190.6 196.0 201.6
	Cooling (Btu/h)	633 300 650 300 668 800 687 900
	Heating (kW)	208.8 214.2 220.5 226.8
	Heating (Btu/h)	712 500 731 000 752 500 774 000
Total capacity of the connected indoor units (Cooling)	Minimum (kW)	92.8 95.3 98.0 100.8
	Minimum (Btu/h)	316 700 325 200 334 400 344 000
	Maximum (kW)	241.3 247.8 254.8 262.1
	Maximum (Btu/h)	823 300 845 400 869 400 894 300
Maximum number of connectable indoor units		64 64 64 64
Model name for combination		AM740JXVAFH2AZ AM760JXVAFH2AZ AM780JXVAFH2AZ
Number of individual outdoor units		3	3	3	4
Combined outdoor unit	AM080JXVAFH				1
	AM100JXVAFH
	AM120JXVAFH
	AM140JXVAFH
	AM160JXVAFH
	AM180JXVAFH
	AM200JXVAFH
	AM220JXVAFH	1
	AM240JXVAFH		1		3
	AM260JXVAFH	2	2	3
Rated capacity	Cooling (kW)	207.2 212.8 218.4	224.0
	Cooling (Btu/h)	707 000 726 100 745 200 764 300
	Heating (kW)	233.1 239.4 245.7	252.0
	Heating (Btu/h)	795 500 817 000 838 500 860 000
Total capacity of the connected indoor units (Cooling)	Minimum (kW)	103.6 106.4 109.2	112.0
	Minimum (Btu/h)	353 500 363 100 372 600 382 200
	Maximum (kW)	269.4 276.6 283.9	291.2
	Maximum (Btu/h)	919 100 943 900 968 800 993 600
Maximum number of connectable indoor units		64 64 64 64

Standard type (AM****JXVAJ* Series)

Model name for combination		AM080JXVAJH/AZ AM100JXVAJH/AZ AM120JXVAJH/AZ AM140JXVAJH/AZ AM160JXVAJH/AZ
Number of individual outdoor units		1	1	1	1	1
Combined outdoor unit	AM080JXVAJH	1
	AM100JXVAJH		1
	AM120JXVAJH			1
	AM140JXVAJH				1
	AM160JXVAJH					1
	AM180JXVAJH
	AM200JXVAJH
	AM220JXVAJH
Rated capacity	Cooling (kW)	22.4 28.0 33.6	40.0 45.0
	Cooling (Btu/h)	76 400 95 500	114 600 136 500 153 500
	Heating (kW)	25.2 31.5 37.8	45.0 50.4
	Heating (Btu/h)	86 000 107 500	129 000 153 500 172 000
Total capacity of the connected indoor units (Cooling)	Minimum (kW)	11.2 14.0 16.8	20.0 22.5
	Minimum (Btu/h)	38 200 47 800	57 300 68 200 76 800
	Maximum (kW)	29.1 36.4 43.7	52.0 58.5
	Maximum (Btu/h)	99 400 124 200	149 000 177 400 199 600
Maximum number of connectable indoor units		14 18 21 26 29

Preparing for installation

Model name for combination		AM180JXVAJH/AZ	AM200JXVAJH/AZ	AM220JXVAJH/AZ	AM240JXVAJH1AZ	AM260JXVAJH1AZ
Number of individual outdoor units		1	1	1	2	2
Combined outdoor unit	AM080JXVAJH
	AM100JXVAJH
	AM120JXVAJH				2	1
	AM140JXVAJH					1
	AM160JXVAJH
	AM180JXVAJH	1
	AM200JXVAJH		1
	AM220JXVAJH			1
Rated capacity	Cooling (kW)	50.4 56.0 61.6	67.2 73.6
	Cooling (Btu/h)	172 000 191 100	210 100 229 200 251	100
	Heating (kW)	56.7 63.0 69.3	75.6 82.8
	Heating (Btu/h)	193 500 215 000	236 500 258 000 282	500
Total capacity of the connected indoor units (Cooling)	Minimum (kW)	25.2 28.0 30.8	33.6 36.8
	Minimum (Btu/h)	86 000 95 500	105 100 114 600 125	500
	Maximum (kW)	65.5 72.8 80.1	87.4 95.7
	Maximum (Btu/h)	223 600 248 400	273 200 298 000 326	400
Maximum number of connectable indoor units		32 36 40 43 47

Model name for combination		AM280JXVAJH1AZ	AM300JXVAJH1AZ	AM320JXVAJH1AZ	AM340JXVAJH1AZ	AM360JXVAJH1AZ
Number of individual outdoor units		2	2	2	2	2
Combined outdoor unit	AM080JXVAJH
	AM100JXVAJH
	AM120JXVAJH	1	1	1	1
	AM140JXVAJH					1
	AM160JXVAJH	1
	AM180JXVAJH		1
	AM200JXVAJH			1
	AM220JXVAJH				1	1
Rated capacity	Cooling (kW)	78.6 84.0 89.6	95.2 101.6
	Cooling (Btu/h)	268 100 286 600	305 700 324 800 346	700
	Heating (kW)	88.2 94.5 100	8 107.1 114.3
	Heating (Btu/h)	301 000 322 500	344 000 365 500 390	000
Total capacity of the connected indoor units (Cooling)	Minimum (kW)	39.3 42.0 44.8	47.6 50.8
	Minimum (Btu/h)	134 100 143 300	152 800 162 400 173	300
	Maximum (kW)	102.2 109.2 11	6.5 123.8 132.1
	Maximum (Btu/h)	348 600 372 600	397 400 422 200 450	600
Maximum number of connectable indoor units		51 54 58 61 64
Model name for combination		AM380JXVAJH1AZ	AM400JXVAJH1AZ	AM420JXVAJH1AZ	AM440JXVAJH1AZ	AM460JXVAJH1AZ
Number of individual outdoor units		2	2	2	2	3
Combined outdoor unit	AM080JXVAJH
	AM100JXVAJH
	AM120JXVAJH					2
	AM140JXVAJH
	AM160JXVAJH	1
	AM180JXVAJH
	AM200JXVAJH		2	1
	AM220JXAVJH	1		1	2	1
Rated capacity	Cooling (kW)	106.6 112.0 117.6 123.2 128.8
	Cooling (Btu/h)	363 700 382 200 401 300 420 400 439 400
	Heating (kW)	119.7 126.0 132.3 138.6 144.9
	Heating (Btu/h)	408 500 430 000 451 500 473 000 494 500
Total capacity of the connected indoor units (Cooling)	Minimum (kW)	53.3 56.0 58.8 61.6 64.4
	Minimum (Btu/h)	181 500 191 000 200 600 210 200 219 700
	Maximum (kW)	138.3 145.6 152.9 160.2 167.4
	Maximum (Btu/h)	472 000 496 800 521 600 546 500 571 200
Maximum number of connectable indoor units		64 64 64 64 64

Model name for combination		AM480JXVAJH1AZ	AM500JXVAJH1AZ	AM520JXVAJH1AZ	AM540JXVAJH1AZ	AM560JXVAJH1AZ
Number of individual outdoor units		3	3	3	3	3
Combined outdoor unit	AM080JXVAJH
	AM100JXVAJH
	AM120JXVAJH	1	1	1	1	1
	AM140JXVAJH	1
	AM160JXVAJH		1
	AM180JXVAJH			1
	AM200JXVAJH				1
	AM220JXVAJH	1	1	1	1	2
Rated capacity	Cooling (kW)	135.2 140.2 145.6 151.2 156.8
	Cooling (Btu/h)	461 300 478 300 496 800 515 900 535 000
	Heating (kW)	152.1 157.5 163.8 170.1 176.4
	Heating (Btu/h)	519 000 537 500 559 000 580 500 602 000
Total capacity of the connected indoor units (Cooling)	Minimum (kW)	67.6 70.1 72.8 75.6 78.4
	Minimum (Btu/h)	230 600 239 200 248 400 257 900 267 500
	Maximum (kW)	175.8 182.3 189.3 196.6 203.9
	Maximum (Btu/h)	599 600 621 800 645 800 670 600 695 400
Maximum number of connectable indoor units		64 64 64 64 64

Preparing for installation

Model name for combination		AM580JXVAJH1AZ AM600JXVAJH1AZ AM620JXVAJH1AZ AM640JXVAJH1AZ
Number of individual outdoor units		3	3	3
Combined outdoor unit	AM080JXVAJH
	AM100JXVAJH
	AM120JXVAJH
	AM140JXVAJH	1
	AM160JXVAJH		1
	AM180JXVAJH
	AM200JXVAJH			2
	AM220JXVAJH	2	2	1
Rated capacity	Cooling (kW)	163.2 168.2 173.6	179.2
	Cooling (Btu/h)	556 900 573 900 592 400 611 500
	Heating (kW)	183.6 189.0 195.3	201.6
	Heating (Btu/h)	626 500 645 000 666 500 688 000
Total capacity of the connected indoor units (Cooling)	Minimum (kW)	81.6 84.1 86.8 89.6
	Minimum (Btu/h)	278 400 287 000 296 100 305 700
	Maximum (kW)	212.2 218.7 225.7	233.0
	Maximum (Btu/h)	723 800 746 000 770 000 794 800
Maximum number of connectable indoor units		64 64 64 64

Model name for combination		AM660JXVAJH1AZ	AM680JXVAJH1AZ AM700JXVAJH1AZ AM720JXVAJH1AZ
Number of individual outdoor units		3	4	4	4
Combined outdoor unit	AM080JXVAJH
	AM100JXVAJH
	AM120JXVAJH 2	1	1
	AM140JXVAJH 1
	AM160JXVAJH 1
	AM180JXVAJH
	AM200JXVAJH
	AM220JXVAJH	3	2	2	2
Rated capacity	Cooling (kW)	184.8	190.4 196.8 201.8
	Cooling (Btu/h)	630 600	649 600 671 500	688 500
	Heating (kW)	207.9	214.2 221.4 226.8
	Heating (Btu/h)	709 500	731 000 755 500	774 000
Total capacity of the connected indoor units (Cooling)	Minimum (kW)	92.4	95.2 98.4 100.9
	Minimum (Btu/h)	315 300	324 800 335 700	344 300
	Maximum (kW)	240.3	247.6 255.9 262.4
	Maximum (Btu/h)	819 600	844 400 872 800	895 000
Maximum number of connectable indoor units		64	64 64 64
Model name for combination		AM740JXVAJH1AZ AM760JXVAJH1AZ		AM780JXVAJH1AZ AM800JXVAJH1AZ
Number of individual outdoor units 4		4		4	4
Combined outdoor unit	AM080JXVAJH
	AM100JXVAJH
	AM120JXVAJH 1	1		1
	AM140JXVAJH				1
	AM160JXVAJH
	AM180JXVAJH 1
	AM200JXVAJH 1
	AM220JXVAJH 2	2		3	3
Rated capacity	Cooling (kW) 207.2 212.8			218.4 224.8
	Cooling (Btu/h) 707 000 726 100			745 200 767 100
	Heating (kW) 238.1 239.4			245.7 252.9
	Heating (Btu/h) 795 500 817 000			838 500 863 000
Total capacity of the connected indoor units (Cooling)	Minimum (kW) 103.6 106.4			109.2 112.4
	Minimum (Btu/h) 353 500 363 300			372 600 383 500
	Maximum (kW)	269.4 276.7		274.0 292.3
	Maximum (Btu/h)	919 000 943 800		968 600 997 000
Maximum number of connectable indoor units		64	64	64	64

* You can connect maximum 64 indoor units to the outdoor unit. Maximum quantity of connectable indoor unit is set to 64 since outdoor unit only support up to 64 communication address. Indoor unit address can be assigned from 0\~63. If the indoor unit address was assigned from 64\~79 E201 error will occur.
* Minimum capacity of the indoor unit is 7.5MBH.

CAUTION

- Installation combination must be complied when composing outdoor unit combination.

Preparing for installation

Moving the outdoor unit

▶ Select the moving path in advance.
▶ Be sure that moving path can support weight of the outdoor unit.

▶ Do not slant the product more than 30^ when carrying it. (Do not lay the product down in sideways.)
Surface of the heat exchanger is sharp. Be careful not to get injured while moving the product.

• You must use certain part of the product when moving the product.

When moving with a crane

▶ Fasten the wire rope as shown in the figure.
▶ To protect damage or scratches, insert a piece of cloth between the outdoor unit and the wire rope.

Wire rope Holes for wire rope to go through

When moving with a forklift

▶ Carefully insert the forklift forks into the forklift holes at the bottom of the outdoor unit.
▶ Be careful with the forklift from damaging the product.

m of Forklift Holes for forklift forks to go through Forklift holes

When moving the product without wooden pallet and the crane is not available for use

▶ Connect a wire rope to the outdoor unit as you would move it with a crane.
▶ Hang the wire rope to the forklift fork to move the outdoor unit.

Forklift Wire rope in a

Selecting installation location

Decide the installation location, with the consideration of the following conditions, under user's approval.

Place where hot discharge air or noise from the outdoor unit may not disturb the neighbor (Especially in residential areas, keep the operation hours in mind.)

▶ Place where structure can bear the weight and vibration of the outdoor unit.
▶ Place with flat surface where rainwater does not settle or leak.
▶ Place where it is not exposed to strong wind.

▶ Well ventilated place with sufficient service place for repairs and maintenance. (Discharge duct can be purchased separately)
Place where you can connect the refrigerant pipes between indoor and outdoor units within allowable distance.
Place where it allows easy waterproofing and draining work for the condensation water generated from the outdoor unit during heating operation.

▶ Place where there is no risk of inflammable gas leakage.

▶ Place where there is no direct influence of snow or rain.

Installation Guide at the seashore

Make sure to follow below guides when installing at the seashore.

1. Do not install the product in a place where it is directly exposed to sea water and sea breeze.

2. Make sure to install the product behind a structure (such as building) that can block see breeze.

3. Even when it is inevitable to install the product in seashore, make sure that product is not directly exposed to sea breeze by installing a protection wall.

4. Consider that the salinity particles clinging to the external panels should be sufficiently washed out.

5. Because the residual water at the bottom of the outdoor unit significantly promotes corrosion, make sure that the slope does not disturb drainage.

- Keep the floor level so that rain does not accumulate.

- Be careful not to block the drain hole due to foreign substance

1. When product is installed in seashore, periodically clean it with water to remove attached salinity.
2. Make sure to install the product in a place that provides smooth water drainage.

Especially, ensure that the base part has good drainage.

1. If the product is damaged during the installation or maintenance, make sure to repair it.
2. Check the condition of the product periodically.

- Check the installation site every 3 months and perform anti-corrosion treatment such as R-Pro supplied by SAMSUNG (Code : MOK-220SA) or commercial water repellent grease and wax, etc., based on the product condition.

- When the product is to be shut down for a long period of time, such as off-peak hours, take appropriate measures like covering the product.

1. If the product is installed within 500 m of seashore, special anti corrosion treatment is recommended for the product.

Selecting installation location

※ Please contact your local SAMSUNG representative for further details.

Protection wall should be constructed with a solid material that can block the sea breeze and the height and width of the wall should be 1.5 times larger than the size of the outdoor unit. (You must secure more than 700mm(28inch) of space between the protection wall and the outdoor unit for air circulation.)

- System air conditioner may cause static noise when listening to AM stations. Therefore, select an installation location for indoor unit where electrical wiring can be done while keeping certain distance from a radio, computer and stereo equipment.

• Especially, keep the unit at least 3m(9.84inch) away from the electrical equipment in an area with weak electromagnetic waves and put the main power cable and communication cables in a separately installed protection tube.

• Make sure that there is no equipment that generates electromagnetic waves. If not electromagnetic waves may cause problem to the control systems which may lead to air conditioner malfunction. (Example: Remote control sensor of the indoor unit may not receive the signal very well, due to ballast stabilizer of the lighting equipment.)

• In regions with heavy snowfall, make sure to install the outdoor unit where there is no concerns of direct snowfall on the outdoor unit. Also, build higher base support so that accumulated snow does not block the air inlet or the heat exchanger.

• R-410A refrigerant is a safe, nontoxic and nonflammable refrigerant. However, if the place holds any concerns for exceeding dangerous level of refrigerant concentration in case of refrigerant leakage, extra ventilation system is required.
• When you install the outdoor unit in a high places such as roof, install fence or guardrail around it. When there is no fence or guardrail, service person could fall.
• Do not install the product in places where corrosive gases such as sulfur oxides, ammonia, and sulfurous gas are produced. (e.g. Toilet outlet, ventilation opening, sewage works, dyeing complex, cattle shed, sulfuric hot spring, nuclear power plant, ship etc.) When installing the product in those places, contact an installation specialty store as the copper pipe and brazing part will need additional corrosion proof or anti-rust additive to prevent corrosion.
• Make sure to keep any inflammable materials (such as wooden materials, oil etc.) around the outdoor unit. When there's fire, those inflammable material will easily catch the fire and may pass it on to the product.
• Depending on the condition of power supply, unstable power or voltage any cause malfunction of the parts or control system. (At the ship or places using power supply from electric generator...etc)

Space requirement for installation

▶ Space requirement was decided based on following conditions; Cooling mode, outdoor temperature of 35^ C ( 95^ F). Larger space is required if the outdoor temperature is higher than 35^ C ( 95^ F) or if the place is heated easily by quantity of solar radiation.
▶ When you secure installation space, consider path for people and the direction of the wind.
▶ Secure installation space as shown in the below illustration, considering ventilation and the service space.
▶ If the installation space is narrow, installer or other worker may get injured during work and may also cause problem to the product.
If you install multiple number of outdoor units in one space, make sure to secure enough ventilation space if there's any walls around the product that may disturb the air flow. If enough ventilation space is not secured, product may malfunction.
▶ You may install the outdoor units with 20mm (0.78 inch) of space between the product, but product's performance may decrease depending on the installation environment.

Single installation

Over 100 (4) Over 100 (4) Over 100 (4) Over 500 (20) [S1] Over 100 (4) Over 100 (4) Over 300 (12) Front side Height of the wall is unlimited Unit: mm (inch)

Space requirement for installation

Module installation

Over 100 (4) Over 100 (4) Front side Over 100 (4) Over 100 (4) Over 300 (12) [S2] Over 500 (S1)

Over 200 (8) Over 300 (12) Over 400 (16) Front side Over 400 (16) Height of the wall is unlimited

Over 100 (4) Over 100 (4) Over 100 (4) Over 100 (4) Over 500 (20) Front side Over 100 (4) Over 100 (4) Over 600 (24) Front side Over 100 (4) Over 500 (20)

* For or

• Height of the wall on the front side should not be higher than 1500mm (60 inch).
• Height of the wall on the air inlet side should not be higher than 500mm (20 inch).
• Height of the wall on the side is not limited.
- If the height of the wall exceeds by certain value (h1, h2), additional clearance [(h1)/2, (h2)/2 : Half of the exceeded distance] should be added to the service space (S1, S2).

Unit: mm (inch) 1500 (60) h1 Front side Air inlet side S1+h1/2 S2+h2/2 2h (0) 000 500 (20) h2

Accessories

Accessories

▶ You must keep following accessories until the installation is finished.
▶ Hand over the installation manual to the customer after finishing the installation.

Installation manual (1)

Optional accessories

▶ Following optional accessories are needed for connecting pipes between the indoor and outdoor units.

Classification Model Name		Specification
		MBH KW
Y-Joint	MXJ-YA1509M 51 below 15.0 and below
	MXJ-YA2512M Over	51~136 and below Over 15.0 ~40.0 and below
	MXJ-YA2812M Over	136~154 and below Over 40.0 ~45.0 and below
	MXJ-YA2815M Over	154~240 and below Over 45.0 ~70.3 and below
	MXJ-YA3419M Over	240~336 and below Over 70.3 ~98.4 and below
	MXJ-YA4119M Over	336~461 and below Over 98.4 ~135.2 and below
	MXJ-YA4422M Over	461 Over 135.2
Distribution header	MXJ-HA2512M 154 and below (for 4 rooms) 45.0 and below (for 4 rooms)
	MXJ-HA3115M	Over 240 ~ 461 and below (for 8 rooms)	Over 70.3 ~ 135.2 and below (for 8 rooms)
	MXJ-HA3819M	Over 240 (for 8 rooms)	Over 70.3 (for 8 rooms)
Y-Joint- Outdoor unit	MXJ-TA3819M	461 and below	135.2 and below
	MXJ-TA4422M	478.4 and over	140.2 and over

* If you use an indoor unit with no internal EEV(Electric Expansion Valve), you will need an EEV kit.
* Only use the genuine accessories listed in above table and do not use imitated accessories.

Base construction and installation of the outdoor unit

- Make sure to remove the wooden pallet before installing the outdoor unit. If you do not remove the wooden pallet, there is risk of fire during welding the pipes. If the outdoor unit is installed with wooden pallet on, and it was used for long period time, wooden palette may break and cause electrical hazard or high pressure may damage the pipes.

* Fix an outdoor unit firmly on the base ground with anchor bolts.

* Manufacturer is not responsible for the damage occurred by not following the installation standards.

1. Make sure that the height of the base ground is 200mm or higher to protect the outdoor unit from rain water or other external conditions. Also, install a draining pit around the base ground and connect the drain pipe to the drainage.
2. Considering the vibration and weight of the outdoor unit, strength of the base ground must be strong to prevent noise and the top surface of it should be flat.
3. Base ground should be 1.5 times larger than the bottom of the outdoor unit.
4. Outdoor unit must be fixed firmly so that it can withstand the wind speed of 30m/s. If you cannot fix the outdoor unit on the base ground, fix it by side or use extra structure.
5. In heating operation, defrost water may form so you must really care about the drainage and waterproofing the floor. To prevent defrost water from stagnating or freezing, construct a drainage with over 1/50 slope. (Ice may form on the floor in winter time.)
6. It is necessary to add wire mesh or steel bar during concrete construction for the base ground to prevent damages or cracks.
7. When installing multiple outdoor units at the same place, construct a H beam or an anti-vibration frame on the base ground to install the outdoor unit.
8. After installing a H beam or an anti-vibration frame, apply corrosion protection and other necessary coating.
9. When concrete construction for outdoor unit installation is completed, install an anti-vibration pad (t=20mm/0.78 inch or more) or an anti-vibration frame to prevent vibration of the outdoor unit from transferring to the base ground.
10. Place the outdoor unit on a H beam or an anti-vibration frame and fix it with the bolt, nut and washer. (The bearing force has to be over 3.5kN)

Base ground construction

Draining pit Over 200mm (8inch)

Bottom surface of the base ground must be horizontally leveled Over 200mm (8inch)

Over 200mm (8inch)

Outdoor unit installation

Base ground H beam or anti-vibration frame Over 200mm (8inch) Over 200mm (8inch) Over 50mm (2inch)

Outdoor unit base mount and anchor bolt position

Unit: mm (inch) A B Outdoor unit - Anti-vibration frame (4-Ø 12) 54 (2.13) 761 (29.96) 803 (31.61) 54 (2.13) Anti-vibration - Base ground (4-Ø 18)

Unit: mm (inch)

Classification Small type Large A type Large B type
Models AM080/100/120**	AM140/160/180/200***, AM220JXVAJH	AM220/240/260JXVAFH
A 880 (34.65) 1,295 (50.98) 1,295 (50.98)
B 740 (29.13) 1,150 (45.28) 1,150 (45.28)

* Refer to the blueprints in technical data book to make a holes for connecting the anti-vibration pad.

Base construction and installation of the outdoor unit

Examples of draining work

Construct the drainage ditch with reinforced concretes and make sure that water-proofing work is done.

For smooth draining of defrost water, make sure to apply 1/50 slope.

▶ Construct a drainage around the outdoor unit to prevent the defrost water (from the outdoor unit) from stagnating, overflowing or freezing near the installation space.
When the outdoor unit is installed on the roof, check the strength and waterproof status of the roof.

960 (37.80) 760 (29.92) 100 (3.94) 100 (3.94) A B 60° 80 (3.15) 80 (3.15) 80 (3.15) X X' Direction of the drainage (Slope 1/50)

Unit: mm (inch)

50 (1.97) 150 (5.91) 100 (3.94) 100 (3.94)

80(3.15) 60° 80(3.15) 60° 80(3.15) 80(3.15) 80(3.15) 80(3.15) 200 (7.87) B 200 (7.87) B Direction of the drainage (Slope 1/50)

Unit: mm (inch)

Classification Small type Large A type Large B type
Models AM080/100/120***	AM140/160/180/200***, AM220JXVAJH	AM220/240/260JXVAFH
A 940 (37.01) 1,350 (53.15) 1,350 (53.15)
B 740 (29.13) 1,150 (45.28) 1,150 (45.28)

CAUTION

Cautions regarding on connecting the anchor bolt

▶ Tighten the rubber washer to prevent the bolt connection part of the outdoor unit from corroding.

Rubber washer

▶ Anchor specification

Size	Diameter of drill bit (a)	Anchor length (b)	Sleeve length (b)	Insert depth	Fastening torque
∅ 10	14mm (1/2") 75m	m (3") 40mm (1-	1/2") 50mm (2") 30	N·m

a b c

* Use the anchor bolts and nuts that is zinc plated or made of STS material. Regular anchor bolts or nuts may get damaged by corrosion.

Cautions regarding on connecting the pipe

▶ If you install the outdoor unit on the rooftop, check the strength and make sure to waterproof the rooftop.
▶ Construct draining pit around the base construction and pay attention to the drainage around the outdoor unit. (Condensation or defrost water may form during outdoor unit operation.)
If there's any possibility of small animals from entering the pipe outlet, block the outlet as shown in the illustration.

Block the part. (When withdrawing the pipe from the front side) Liquid side pipe Gas side pipe

Cautions regarding on anti-vibration frame installation

▶ During installation, make sure there is no gap between the base ground and the supporting structures such as anti-vibration frame or H beam.
▶ Base ground must be constructed strongly to support the bottom part of the anti-vibration mount.

Technical diagram showing two mechanical assembly states with cross-sectional views and hatched material sections (no text or labels)

▶ After installing the anti-vibration frame, untighten the fixing part on the top and bottom part of the frame.

Base construction and installation of the outdoor unit

Caution for installing discharge duct

▶ Static pressure of the discharge duct should be within the standard specification 78.45 Pa (0.315 W.G) when installing the duct.
▶ If you remove the fan guard to install the discharge duct, make sure to install a safety net on the duct outlet. Foreign substance may enter into the product and there could be a risk of personal injury.
▶ Wear protection equipment at all times when making galvanized sheet metal duct, since the worker may get injured by the sharp parts.
When installing the outdoor unit under the tree or near forest, leafs may get into the product and cause problems on the product. Therefore, install a discharge duct to prevent foreign substance infiltration.

Technical line drawing of a multi-chamber air conditioning unit with fan and cooling fins (no text or symbols)

Technical line drawing of a dual air duct system with fans and ventilation panels (no text or symbols)

Installing the wind/snow prevention duct

Installing the outdoor unit around the obstacles

It is necessary to install a wind/snow prevention duct(field supply) to direct exhaust from the fan horizontally, when it is difficult to provide a minimum space of 2m (6.56ft) between the air outlet and a nearby obstacle.

Upper floor Discharged air Ex.) Balcony Ex.) Mechanical room Discharged air Grille/louver Suction air

Installing the outdoor unit in cold region

In cold regions with lots of snowfall, install a snow prevention duct, as a sufficient countermeasure, to prevent snow from accumulating on the outdoor unit. When the snow prevention duct is not installed, frost may accumulate on the heat exchanger and heating operation may not work normally.

▶ Air outlet of the duct should not be directed to the enclosed space.

CAUTION

Cautions regarding on installing the frame and selecting the base ground

• Height (h) of the frame and the base ground should be higher than the "heaviest expected snowfall".
• Area of the frame and the base ground should not be larger than the area of the outdoor unit. Snow may accumulate if the area of the frame or the base ground is larger.

Technical line drawing of a mechanical lifting device with no visible text or symbols

Technical line drawing of two industrial cooling units with fans and cooling fins (no text or symbols)

Installing the wind/snow prevention duct

Installing the outdoor unit in windy region

In windy regions such as near sea shores, protection wall or wind protection duct must be installed for normal operation of the outdoor unit. (Refer to the illustration of the snow prevention duct, for installing the wind protection duct.)
▶ Install the wind prevention duct with the consideration of major wind direction. If the direction of the discharge part is same as major direction of the wind, it could cause product's performance decrease.

Cautions regarding on installing the frame and selecting the base ground

• The base ground must be solid and the outdoor unit must be fixed with anchor bolts.
- Make sure to install outdoor unit in a place strong enough to withstand its weight. If the place cannot withstand the weight of the outdoor unit, outdoor unit may fall and cause personal injury.
- When installing on a rooftop subject to strong wind, countermeasures must be taken to prevent the unit from falling down.
• Use a frame that is resistant to corrosion.

Unit: mm (inch)

782 (30.79) 127 (5) 593 (23.35) 2000 (78.74) 612 (24.09) 1210 (47.64) 1318 (51.89) 108 (4.25) 560 (22.05) 880 (34.05) 560 (22.05) 980 (38.58) 1150 (45.28) 1632 (64.25) 2300 (90.55) 180 (7.09) 871 (34.29) 668 (26.30) 532 (20.94) 965 (37.99) 1134 (44.65) 2271 (89.41)

593 (23.35)127 (5) 1197 (47.13) 612 (24.09)108 (4.25) 1210 (47.64) 1318 (51.89) 2415 (95.08) 560 (22.05) 560 (22.05)1295 (50.98) 980 (38.58) 1150 (45.28) 1632 (64.25) 2300 (90.55) 180 (7.09) 180 (7.09) 871 (34.29) 668 (26.30) 532 (20.94) 2271 (89.41) 965 (37.99) 1134 (44.65) 765 (30.12) 550 (21.65)

1192 (46.93) 552 (21.73) 640 (25.20) 1252 (49.29) 1315 (51.77) 550 (21.65) 406 (15.98) 2415 (95.08) 560 (22.05) 560 (22.05)1295 (50.98) 1080 (42.52) 1255 (49.41) 1732 (68.19) 2400 (94.49) 180 (7.09) 180 (7.09) 871 (34.29) 668 (26.30) 532 (20.94) 1080(42.52) 1255 (49.41) 2371 (93.35) 550 (21.65) 765 (30.12) 550 (21.65)

Refrigerant pipe installation

WARNING

- When installing, make sure there is no leakage. When collecting the refrigerant, stop the compressor first before removing the connection pipe. If the refrigerant pipe is not properly connected and the compressor works with the service valve open, the pipe inhales the air and it makes the pressure inside of the refrigerant cycle abnormally high which may lead to explosion and injury.

Refrigerant pipe work

The length of refrigerant pipe should be as short as possible and the height difference between an indoor and outdoor unit should be minimized.
▶ Piping work must be done within allowable piping length, height difference, and the allowable length after branching.
The pressure of the R-410A is high. Use only certified refrigerant pipe and follow the installation method.
▶ After installing the pipes, calculate the total length of the pipe to check if additional refrigerant is needed. When you need to charge the additional refrigerant, make sure to use R-410A refrigerant.
Use clean refrigerant pipe and there shouldn't be any harmful ion, oxide, dust, iron content or moisture inside pipe.
▶ Use tools and accessories that fit on R-410A only.

Tool Installation process/purpose Compatibility with conventional tool
Pipe cutter	flaring	Pipe cutting	Compatible
Flaring tool Pipe
Refrigerant machine oil		Apply refrigerant oil on flared part	Exclusive ether oil, ester oil, alkali benzene oil or synthetic oil
Torque wrench		Connect flare nut with pipe	Compatible
Pipe bender Pipe bending
Nitrogen gas	Air tightness test welding	Prevent oxidation within the pipe
Welder Pipe welding
Manifold gage Air tightness test ~ additional refrigerant charging	Vacuuming, charging refrigerant and checking operation	Need exclusive one to prevent mixture of R-22 refrigerant oil use and also the measurement is not available due to high pressure
Refrigerant charging hose		Need exclusive one since there is risk of refrigerant leakage or inflow of impurities
Vacuum pump Pipe drying		Compatible (Use products which contain the check valve to prevent the oil from flowing backward into the outdoor unit.) Use the one that can be vacuumed up to -100.7kpa(5Torr).
Scale for refrigerant charging	Charging refrigerant Compatible
Gas leak detector Gas leak test		Need exclusive one (Ones used for R-134a is compatible)
Flare nut	Must use the flare nut equipped with the product. Refrigerant leakage may occur when the conventional flare nut for R-22 is used.

Refrigerant pipe installation

Selecting refrigerant pipe

Increase the main pipe size First branch joint

▶ Install the refrigerant pipe according to main pipe size of each outdoor unit capacity.
When the pipe length (including elbow) between an outdoor unit and the farthest indoor unit exceeds 90m (295.28ft), you must increase the size of the pipe (main pipe) by one grade which connects between the outdoor unit to the first branch joint.

H/P

graph TD
    A["33.6 kW (114.6 MBH)"] --> D["Central Unit"]
    B["40.0 kW (136.5 MBH)"] --> D
    C["61.6 kW (210.2 MBH)"] --> D
    D --> E["(3)(2)(1)"]
    D --> F["(E)(C)"]
    style A fill:#f9f,stroke:#333
    style B fill:#f9f,stroke:#333
    style C fill:#f9f,stroke:#333
    style D fill:#ccf,stroke:#333
    style E fill:#cff,stroke:#333
    style F fill:#cff,stroke:#333

Ex.) 135.2 kW (461.3 MBH)

Capacity (kW) No.		Pipe size [mm (inch)]
		Liquid pipe Gas	pipe
33.6 kW(114.6 MBH)	(1) ∅ 12.70	(1/2) ∅ 28.58 (1 1/8)
73.6 kW(251.1 MBH)	(2) ∅ 19.05	(3/4) ∅ 34.92 (1 3/8)
135.2 kW(461.3 MBH)	(3) ∅ 19.05	(3/4) ∅ 41.28 (1 5/8)

Select the size of the pipe according to the below table.

Outdoor unit capacity [kW (MBH)]	Main pipe length within 90 m (295 ft) Size Up (Main pipe length over 90 m (295 ft))
	Liquid pipe [mm (inch)]	Gas pipe [mm (inch)]	Liquid pipe [mm (inch)]	Gas pipe [mm (inch)]
22.4 kW (76.4 MBH)	∅ 9.52 (3/8) (7/8) ∅ 25.40 (1)	∅ 19.05 (3/4)	∅ 12.70 (1/2)	∅ 22.22 (7/8)
28.0 kW (95.5 MBH) ∅ 22.22	∅ 12.70 (1/2)			note1)
33.6 kW (114.6 MBH)	∅ 12.70 (1/2)	∅ 28.58 (1 1/8)	∅ 15.88 (5/8)	∅ 28.58 (1 1/8)
40.0 kW (136.5 MBH)
45.0 kW (153.5 MBH)				∅ 31.75 (1 1/4) note2)
50.4 kW (172.0 MBH)	∅ 15.88 (5/8) ∅ 19.05 (3/4)
56.0 kW (191.1 MBH)
61.6 kW (210.2 MBH)
67.2 kW (229.3 MBH)		∅ 34.92 (1 3/8) ∅ 38	10 (1 1/2)	note3)
73.4 kW ~ 84.0 kW (251.1 MBH ~ 286.6 MBH)	∅ 19.05 (3/4) ∅ 22.22 (7/8) ∅ 41.28 (1 5/8)
89.6 kW ~ 95.2 kW (305.7 MBH ~ 324.8 MBH)
101.6 kW (346.7 MBH)				∅ 41.28 (1 5/8)
106.6 kW ~ 135.2 kW (363.7 MBH ~ 461.3 MBH)
140.2 kW ~ 168.2 kW (478.4 MBH ~ 573.9 MBH)				∅ 53.98 (2 1/8)
173.6 kW ~ 224.8 kW (592.3 MBH ~ 767.0 MBH)	∅ 22.22 (7/8) ∅ 53.98 (2 1/8) ∅ 25.40 (1)	∅ 22.22 (7/8) ∅ 53.98 (2 1/8) ∅ 25.40 (1)	note1)

Note1) If ∅ 25.40mm (∅ 1") pipe is not available on site, use ∅ 28.58mm (∅ 1 1/8") pipe.
Note2) If ∅ 31.75mm (∅ 1 1/4") pipe is not available on site, use ∅ 34.92mm (∅ 1 3/8") pipe.
Note3) If ∅ 38.10mm (∅ 1 1/2") pipe is not available on site, use ∅ 41.28 (∅ 1 5/8") pipe.

Refrigerant pipe installation

Size of the pipe between branch joints (B)

Select the pipe size according to the sum of indoor unit capacity which will be connected after the branch.

* However, if the size of the pipe between branch joints (B) is bigger than the size of the pipe connected to the outdoor unit (A), apply the pipe size (A).

Indoor unit capacity [kW (MBH)]	Branch pipe length within 45 m (147.64 ft) note1)		Branch pipe length between 45~90 m (147.64~295.28 ft) note1)
	Liquid pipe [mm (inch)]	Gas pipe [mm (inch)]	Liquid pipe [mm (inch)]	Gas pipe [mm (inch)]
15.0 kW (51.2 MBH) and below	∅ 9.52 (3/8)	∅ 15.88 (5/8)	∅ 12.70 (1/2)	∅ 19.05 (3/4)
Over 15.0 kW~22.4 kW (51.2 ~ 76.4 MBH) and below		∅ 19.05 (3/4) ∅ 22.22 (7/8)
Over 22.4 kW~28.1 kW (76.4 ~ 95.9 MBH) and below		∅ 22.22 (7/8) ∅ 25.40 (1)		note2)
Over 28.1 kW~40.0 kW (95.9 ~ 136.5 MBH) and below	∅ 12.70 (1/2)	∅ 28.58 (1 1/8)	∅ 15.88 (5/8)	∅ 28.58 (1 1/8)
Over 40.0 kW~45.0 kW (136.5 ~ 153.5 MBH) and below				∅ 31.75 (1 1/4) note3)
Over 45.0 kW~63.3 kW (153.5 ~ 216.0 MBH) and below	∅ 15.88 (5/8) ∅ 19.05 (3/4)		∅ 38.10 (1 1/2)
Over 63.3 kW~70.3 kW (216.0 ~ 239.9 MBH) and below				note4)
Over 70.3 kW~98.4 kW (239.9 ~ 335.8 MBH) and below	∅ 19.05 (3/4) ∅ 22.22 (7/8)
Over 98.4 kW~135.2 kW (335.8 ~ 461.3 MBH) and below				∅ 41.28 (1 5/8)
Over 135.2 kW~169.0 kW (461.3 ~ 576.7 MBH) and below		∅ 41.28 (1 5/8)		∅ 53.98 (2 1/8)
Over 169.0 kW (576.7 MBH) ∅ 22.22	(7/8) ∅ 53.98 (2 1/8) ∅ 25.40 (1)		note2)

Note1) Note on measuring distance between branch joints (B): You must measure the distance between first branch joint to the last indoor unit. (NOT from first joint to the last branch joint
Note2) If ∅ 25.40 mm (∅ 1") pipe is not available on site, use ∅ 28.58 mm (∅ 1 1/8") pipe.
Note3) If ∅ 31.75 mm (∅ 1 1/4") pipe is not available on site, use ∅ 34.92 mm (∅ 1 3/8") pipe.
Note4) If ∅ 38.10 mm (∅ 1 1/2") pipe is not available on site, use ∅ 41.28 mm (∅ 1 5/8") pipe.

33.6 kW (114.6 MBH) 40.0 kW (136.5 MBH) 61.6 kW (210.2 MBH) (A) (B) (D) (3)(2)(1) (E)(C)

Size of the pipe between the branch joint and the indoor unit

Make a selection according to outdoor unit capacity.

Indoor unit capacity [kW (MBH)]	Pipe size (O.D. [mm (inch)])
	Liquid pipe Gas pipe
6.0 kW (20.5 MBH) and below ∅ 6.35	(1/4) ∅ 12.70 (1/2)
7.1 kW ~ 16.0 kW (24.2 MBH ~ 54.6 MBH) and below	∅ 9.52 (3/8) ∅ 15.88 (5/8)
20.0 kW ~ 23.0 kW (68.2 MBH ~ 78.5 MBH) and below	∅ 9.52 (3/8) ∅ 19.05 (3/4)
Over 23.0 kW (78.5 MBH) ∅ 9.52 (3/8) ∅ 22.22 (7/8)

Branch joint

▶ Branch joint between outdoor units (C)

Classification Model name	Specification [kW (MBH)]
Y-joint for outdoor unit (C)	MXJ-TA3419M 135.2 kW (461 MBH) and below
	MXJ-TA4122M Over 140.2 kW (478.4 MBH)

▶ First branch joint (D)

Make a selection according to outdoor unit capacity.

Classification Outdoor unit capacity [kW (MBH)] Model name of the branch joint
Y-joint (D)	15.0 kW ~ 40.0 kW (51.2 ~ 136.5 MBH) and below	MXJ-YA2512M
	40.0 kW ~ 45.0 kW (136.5 ~ 153.5 MBH) and below	MXJ-YA2812M
	45.0 kW ~ 70.3 kW (153.5 ~ 239.9 MBH) and below	MXJ-YA2815M
	70.3 kW ~ 98.4 kW (239.9 ~ 335.8 MBH) and below	MXJ-YA3419M
	98.4 kW ~ 135.2 kW (335.8 ~ 461.3 MBH) and below	MXJ-YA4119M
	Over 135.2 kW (461.3 MBH) MXJ-YA4422M

Refrigerant pipe installation

▶ Branch joint (E)

Select a branch joint according to the sum of indoor unit capacity which will be connected after the branch.

* However, if the size of the pipe between branch joints (E) is bigger than the size of the pipe connected to the outdoor unit (D), apply the pipe size (D).

1) Y-joint

Classification Model name Specification [kW (MBH)]
Y-joint (E)	MXJ-YA1509M 15.0 kW (51.2 MBH) and below
	MXJ-YA2512M Over 15.0 kW ~ 40.0 kW (51.2 ~ 135.2 MBH) and below
	MXJ-YA2812M Over 40.0 kW ~ 45.0 kW (136.2 ~ 153.5 MBH) and below
	MXJ-YA2815M Over 45.0 kW ~ 70.3 kW (153.5 ~ 239.9 MBH) and below
	MXJ-YA3419M Over 70.3 kW ~ 98.4 kW (239.9 ~ 335.8 MBH) and below
	MXJ-YA4119M Over 98.4 kW ~ 135.2 kW (335.8 ~ 461.3 MBH) and below
	MXJ-YA4422M Over 135.2 kW (461.3 MBH)

2) Distribution header

Classification Model name Specification [kW (MBH)]
Distribution header (E)	MXJ-HA2512M 45.0 kW	(153.5 MBH) and below (for 4 rooms)
	MXJ-HA3115M 70.3 kW	(239.9 MBH) and below (for 8 rooms)
	MXJ-HA3819M	Over 70.3 kW ~ 135.2 kW (239.9 ~ 461.3 MBH) and below (for 8 rooms)

H/P

Refrigerant pipe installation

Branch joint

▶ Basic amount of refrigerant within the outdoor unit

- Amount of additional refrigerant has to be calculated based on the sum of all liquid pipe length.

Classification	AM080***	AM100***	AM120***	AM140***	AM160***	AM180***
Basic type [kg (lb)] 5.5	(12.1) 5.5 (12.1) 6	5 (14.3) 7.7 (17.0)	7.7 (17.0) 8.4 (18.5)
Classification	AM200***	AM220JXVAJH	AM220JXVAFH	AM240JXVAFH	AM260JXVAFH
Basic type [kg (lb)] 8.4	(18.5) 8.4 (18.5) 1	2.5(27.5) 12.5(27.5)	12.5(27.5)

▶ Amount of additional refrigerant depending on the pipe size (☐)

- Amount of additional refrigerant has to be calculated based on the sum of all liquid pipe length.

Size of liquid pipe[mm (inch)]	6.35 ( 1/4 )	9.52 ( 3/8 )	12.70 ( 1/2 )	15.88 ( 5/8 )	19.05 ( 3/4 )	22.23 ( 7/8 )	25.40 ( 1 )
Additional amount[kg/m (lb/ft)]	0.02(0.013)	0.06(0.040)	0.125(0.084)	0.18(0.121)	0.27(0.181)	0.35(0.235)	0.53(0.356)

- For the indoor unit already connected to EEV kit, the additional refrigerant charging is 0.0067lb per feet regardless of the pipe size.

▶ Amount of additional refrigerant for each indoor unit (☐)

(Unit : kg(lb))

Capacity (MBH) Model	5	6	7	9	12	15	18	19	20	24	27	28	30	32	36	38	42	48	54	60	72	76	96	110	170	500 CMH	1000 CMH
1way cassette (AM*** F(N)N1DCH/***)			0.25(0.55)	0.25(0.55)	0.25(0.55)		0.32(0.71)			0.32(0.71)
2way cassette (AM***N2DCH/ ***)							0.31(0.68)			0.47(1.04)
4way cassette S (600x600) (AM***NNDCH/ ***)	0.29(0.64)		0.29(0.64)	0.29(0.64)	0.29(0.64)		0.37(0.82)		0.37(0.82)
4way cassette S (AM*** F(N)N4DCH/***)				0.45(0.99)	0.45(0.99)		0.45(0.99)			0.45(0.99)			0.69(1.52)		0.69(1.52)			0.69(1.52)
4way cassette S (AM*** JN4D(P)CH/ ***)		0.45(0.99)											1.00(2.20)					1.00(2.20)
360 cassette (AM*** KN4DCH/ ***)				0.45(0.99)	0.45(0.99)		0.45(0.99)			0.45(0.99)			0.69(1.52)		0.69(1.52)			0.69(1.52)
Capacity (MBH) Model	5	6	7	9	1	2	1	5	1	8	1	9	2	0	2	4	2	7	2	8	3	0	3	2	3	500 CMH	3 1000 CMH
Concealed Floor Standing (AM * * * * NF(G)DCH/** )		0.12(0.26)		0.22(0.49)	0.22(0.49)		0.32(0.71)			0.32(0.71)
Floor Standing (AM * * * * NPD*H/** )																		0.69(1.52)					1.85(4.08)
Ceiling (AM * * * * NCD*H/** )							0.39(0.86)			0.39(0.86)					0.56(1.23)	0.56(1.23)		0.95(2.09)
V-AHU (AM * * * * NZDCH/** )					0.33(0.73)		0.50(1.10)			0.50(1.10)			0.83(1.83)		0.88(1.94)			1.18(2.60)	1.27(2.80)	1.69(3.73)	1.69(3.73)
Wall mounted (AM * * * FNTDCH/** )			0.24(0.53)	0.24(0.53)	0.24(0.53)		0.36(0.79)		0.36(0.79)	0.36(0.79)
Wall mounted (with EEV) (AM * * * F(H)NQDCH/** )			0.34(0.75)	0.34(0.75)	0.34(0.75)		0.51(1.12)		0.51(1.12)	0.51(1.12)
Wall mounted (AM * * * * NADKH/** )	0.16(0.35)		0.16(0.35)	0.19(0.42)	0.25(0.55)	0.25(0.55)		0.52(1.15)		0.52(1.15)		0.52(1.15)
Wall mounted (with EEV) (AM * * * * NVD*H/** )	0.22(0.49)		0.22(0.49)	0.25(0.55)	0.34(0.75)	0.34(0.75)	0.71(1.57)	0.71(1.57)		0.71(1.57)		0.71(1.57)
Wall mounted (AM * * * KNTDCH/** )			0.24(0.53)	0.32(0.71)	0.32(0.71)		0.49(1.08)		0.49(1.08)	0.49(1.08)
Wall mounted (with EEV) (AM * * * KNQDCH/** )			0.24(0.53)	0.32(0.71)	0.32(0.71)		0.49(1.08)		0.49(1.08)	0.49(1.08)
Wall mounted (withEEV) (AM * * * MNQDCH/** )														0.68(1.50)
ERV plus (AM * * * * NKDEH/** )																										0.11(0.24)	0.36(0.79)
Hydro Unit HE (AM * * * * NBDEH/** )																			0.60(1.32)					0.70(1.54)	1.20(2.65)
MCU (MCU-S * * NE * * N)	0.50(1.10)

▶ If AHU Kit is included among the indoor units, add 0.018kg(0.04lb) of refrigerant for every 1MBH of AHU capacity increase.

▶ Method to calculate total amount of additional refrigerant

- Amount of additional refrigerant depending on the pipe length (☐)

- Amount of additional refrigerant for each indoor unit (☐) = (Amount of additional refrigerant for each connected indoor unit) ※ Refer to the table

- Total amount of additional refrigerant = □+□

* Sum of total amount of additional refrigerant and the basic amount of refrigerant should not exceed 100kg (220lb). If the refrigerant exceeds 100kg (220lb), separate the module so that weight of the refrigerant doesn't exceed 100kg (220lb).

Ex.) For AM180***, basic amount of refrigerant is 8.7kg (19.1lb), therefore total amount of additional refrigerant (☐+☐) should not exceed 91.3kg (200.9lb).

Refrigerant pipe installation

▶ Example of refrigerant calculation for HP models

Classification	Size of liquid pipe [mm (inch)]	Length [m (ft)]	Unit amount of refrigerant [kg/m (lb/ft)]	Amount of additional refrigerant [kg (lb)]	Total amount of additional refrigerant [kg (lb)]
		1	2	1×2	Σ(1×2)
Liquid pipe (☐)	∅6.35 (∅1/4) 35 (114.8) 0.02 (0.013) 0.7 (1.49)				5.575 (12.19)∅9.52 (∅3/8) 50
	∅12.70 (∅1/2) 15 (49.2) 0.125 (0.084) 1.875 (4.13)

Classification	Model name of indoor unit	Number of units	Unit amount of refrigerant [kg/EA (lb/EA)]	Amount of additional refrigerant [kg (lb)]	Total amount of additional refrigerant [kg (lb)]
		1	2	1×2	Σ(1×2)
Indoor unit (□)	4way cassette (AM018FN4DCH)	4 0.45 (0.99)	1.8 (3.96)		□ 3.30 (7.26)
	Slim duct (AM024FNLDCH)	2 0.45 (0.99)	0.90 (1.98)
	Slim duct (AM012FNLDCH)	1 0.35 (0.77)	0.35 (0.77)
	1way cassette (AM012FN1DCH)	1 0.25 (0.55)	0.25 (0.55)

• Total amount of refrigerant (☐+☐) = 5.575 + 3.30 = 8.875 (kg)
  = 12.19 + 7.26 = 19.45 (lb)

Temper grade and minimum thickness of the refrigerant pipe

Outer diameter		Minimum thickness		Temper grade
mm	inch	mm	inch
6.35	1/4	0.70	0.028	Annealed
9.52	3/8	0.70	0.028
12.70	1/2	0.80	0.031
15.88	5/8	1.00	0.039
19.05	3/4	0.90	0.035	Drawn
22.22	7/8	0.90	0.035
25.40	1	1.00	0.039
28.58	1 1/8	1.10	0.043
31.75	1 1/4	1.10	0.043
34.92	1 3/8	1.21	0.048
38.10	1 1/2	1.35	0.053
41.28	1 5/8	1.43	0.056
44.45	1 3/4	1.60	0.063
50.80	2	2.00	0.079
53.98	2 1/8	2.10	0.083

- For pipes larger than ∅ 3/4" (∅ 19.05mm), drawn type (C1220T-1/2H or C1220T-H) type copper pipe must be used. If a annealed type (C1220T-O) copper pipe is used, pipe may break due to its low pressure resistance and cause personal injury.

Keeping refrigerant pipe

To prevent foreign materials or water from entering the pipe, storing method and sealing method (especially during installation) is very important. Apply correct sealing method depending on the environment.

Exposure place Exposure time Sealing type
Outdoor	Longer than one month Pipe pinch
	Shorter than one month Taping
Indoor - Taping

Refrigerant pipe welding and safety information

CAUTION

Important information for refrigerant pipe work

• Make sure there is no moisture inside the pipe.
• Make sure there are no foreign substances and impurities in the pipe.
• Make sure there is no leakage.
• Make sure to follow the instruction when welding or storing the pipe.

Nitrogen flushing welding

▶ When welding the refrigerant pipes, flush them with nitrogen gas as shown in the picture.
▶ If you do not perform nitrogen flushing when welding the pipes, oxide may form inside the pipe. It can cause the damage of the important parts such as compressor and valves etc.
▶ Adjust the flow rate of the nitrogen flushing with a pressure regulator to maintain 0.05m^2/h(0.54ft^2/h) or less.

Welding part Ø 6.35 (1/4") copper pipe Nitrogen gas Pressure regulator Stop valve Taping Flowmeter High pressure hose Nitrogen gas

Direction of the pipe when welding

Direction of the pipe should be headed downward or in a sideways when welding.
▶ Avoid welding the pipe with pipe direction heading upward.

CAUTION

- When you test gas leakage after welding the pipes, use a designated solution for gas leakage detection. If you use the detection solution that includes sulfuric ingredient, it may cause corrosion to the pipes.

Refrigerant pipe installation

Cutting or flaring the pipes

1. Make sure that you prepared the required tools.

▶ Pipe cutter, Deburring tool, flaring tool and pipe holder, etc.

1. If you want to shorten the pipe, cut it with a pipe cutter ensuring that the cut edge remains at 90^ with the side of the pipe.

▶ Refer to below illustrations for correct and incorrect examples of cut edges.

Oblique Rough Burr

1. To prevent a gas leak, remove all burrs at the cut edge of the pipe using a Deburring tool.

2. Carry out flaring work using flaring tool as shown below.

[Flaring tools]

Clutch type Wing nut type

A Flaring bar Pipe

Yoke Flaring bar Pipe Flare nut

		Pipe diameter [D, mm (inch)]	Depth of flaring part [A, mm (inch)]
			Using flaring tool for R-410A	Using conventional flaring tool
				Clutch type Wing nut type
		ø6.35(ø1/4)	0~0.5(0~0.02) 1.0~1	5(0.04~0.06) 1.5~2.0(0.06	~0.08)
		ø9.52(ø3/8) 0~0.5(0~0.02) 1.0~1.5(0.04~0.06)		1.5~2.0(0.06~0.08)
		ø12.70(ø1/2) 0~0.5(0~0.02) 1.0~1.5(0.04~0.06)		1.5~2.0(0.06~0.08)
		ø15.88(ø5/8)	0~0.5(0~0.02) 1.0~1	5(0.04~0.06) 1.5~2.0(0.06	~0.08)

1. Check that you flared the pipe correctly.

▶ Refer to below illustrations for correct and incorrect examples of flared pipe.

Uneven ThicknessCrackedDamaged SurfaceInclined

If foreign matters or burrs are not removed after cutting pipe, refrigerant gas may leak.
If foreign matters enter inside the pipe, important interior parts of the unit may get damaged or product efficiency will be reduced. So, the direction of pipe should be downward during pipe cutting or flaring.

Connecting the flared pipes

▶ Check if the flaring is properly done according to the standard size.

Align the center of the piping and tighten the flare nut with your hands. Then, tighten the flare nut with torque wrench in a direction of the arrow indicated in below illustration.

▶ Make sure to use ester oil to coat the flare connection section.

Pipe Flare connection section Flare nut

Monkey wrench Torque wrench

Outer diameter Torque Flare dimension						Flare shape [mm(inch)]
mm inch	N·m lbf·ft mm	inch
6.35	1/4	14 ~ 18	10.3 ~ 13.3	8.7 ~ 9.1	0.34 ~ 0.36
9.52	3/8	34 ~ 42	25.1 ~ 31.0	12.8 ~ 13.2	0.50 ~ 0.52
12.7	1/2	49 ~ 61	36.1 ~ 45.0	16.2 ~ 16.6	0.64 ~ 0.65
15.88	5/8	68 ~ 82	50.2 ~ 60.5	19.3 ~ 19.7	0.76 ~ 0.78

• Blowing Nitrogen gas should be done when welding the pipe.
  • Make sure to use the provided flare nut.
  • Make sure that there are no cracks or twisted part when you need to bend the pipe.
  • Do not fasten the flare nut with excessive strength.
• R-410A is a high pressure refrigerant and there is a risk of refrigerant leakage if the flare connection is not coated with ester oil. Therefore, apply ester oil to coat the flare connection area.

Refrigerant pipe installation

Pipe installation for an outdoor unit

1. Direction of the pipe

Refrigerant pipe can be withdrawn from the front, left and right side. Take necessary method to install the pipes according to the condition of the installation site.

Front side connection

Right side connectionLeft side conr

Caution for using knock-out hole

Knock-out hole

• Make sure to prevent any damages on the exterior of the outdoor unit.
- Remove all burrs around the knock-out hole and apply varnish on the cross section and edges of the knock-out hole to prevent rust.
- Use a cable protection tube and bushing to prevent a cable from being damaged when passing through a knock-out hole.

2. Connecting refrigerant pipe for outdoor unit

Classification Front side connection Right/left (and bottom) side connection
Working process	First, remove the piping cover from the outdoor unit.Separate the knock-out hole that you are going to use. If you separate the knock-out hole that is going to be unused, small animals such as squirrels and rats may get into the unit through the hole.Fix the bottom side of the piping cover first and then fix the top part of it.		Separate the knock-out hole at the bottom side of the unit and install the pipe.After installing and insulating the pipe, close up the remaining holes. If not, small animals such as rats and squirrels may get inside the unit.
H/P		Liquid side pipe

CAUTION

Caution for welding the pipe to an outdoor unit

• When welding the pipe, the unit may get damaged by the heat and flame from welding. Use a flame proofing cloth to protect the unit from a welding fire or flame. Sensor for detecting outside temperature is located on the left side of the welding part so be extra careful not to damage the sensor when welding.
• The O-ring and Teflon packing inside service valve may get damaged by the heat from welding. Wrap the bottom side of the service valve with a wet cloth and weld it as shown in the illustration. Also, water dripping from the wet cloth may interrupt the welding. Make sure the water does not drip from the wet cloth.
• Make sure that connected pipes does not interrupt each other or make contact with the product. (Vibration may cause damage to the pipes.)
• When removing the sealed pipe on the bottom side of the service valve, cut it with a pipe cutter first and then start the welding. When the sealed pipe is welded without cutting, you may get injured by the refrigerant within the pipe.

Service port Service valve Temperature sensor Wet towel

Refrigerant pipe installation

3. Pipe installation between the outdoor units

▶ You will need branch joints, which is an optional accessory, for connecting in between outdoor units in order to combine outdoor units in module.
* For optimal distribution of the refrigerant, you must use Y-joint as branch joint for connecting outdoor units. (Do not use T-joint)
▶ When you install the outdoor units in module, there is no restriction of installation order among outdoor units.
▶ Height of the connection pipe should be same or lower than the ones connected to the outdoor units.
▶ Check the changes in comparison with the DVM II and III.

Caution Correct installation Incorrect installation
Refrigerant pipes should be connected at the same or lower level than the ones connected to the outdoor unit.
Refrigerant pipes must be connected by the side of the product.	(12inch) or more
Branch joint between outdoor units must be installed horizontally.
Install a vertical trap in following cases as shown in the figure :Case1. Pipe length between outdoor unit branches exceeds 2m (6.56ft).Case2. Pipe length between outdoor unit and its branch exceeds 2m (6.56ft).

Examples of refrigerant pipe installation

H/P

1. Using Y-joint

graph TD
    A["Central Storage Unit"] --> B["Processing Unit 1"]
    A --> C["Processing Unit 2"]
    A --> D["Processing Unit 3"]
    A --> E["Processing Unit 4"]

graph TD
    A["Server Unit"] --> B["Data Bus"]
    A --> C["Server Unit 1"]
    A --> D["Server Unit 2"]
    A --> E["Server Unit 3"]
    A --> F["Server Unit 4"]

graph TD
    A["Server"] --> B["Processing Unit"]
    B --> C["Server Rack"]
    B --> D["Server Rack"]
    B --> E["Server Rack"]
    B --> F["Server Rack"]
    B --> G["Server Rack"]
    B --> H["Server Rack"]
    style A fill:#f9f,stroke:#333
    style B fill:#ccf,stroke:#333
    style C fill:#cfc,stroke:#333
    style D fill:#fcc,stroke:#333
    style E fill:#cff,stroke:#333
    style F fill:#ffc,stroke:#333
    style G fill:#cfc,stroke:#333
    style H fill:#fcc,stroke:#333

1. Using distribution header

graph TD
    A["Data Unit"] --> B["Processing Unit"]
    B --> C1["Device 1"]
    B --> C2["Device 2"]
    B --> C3["Device 3"]
    B --> C4["Device 4"]
    B --> C5["Device 5"]
    B --> C6["Device 6"]

graph TD
    A["Storage Unit"] --> B["Component 1"]
    A --> C["Component 2"]
    B --> D["Output 1"]
    B --> E["Output 2"]
    C --> F["Output 3"]
    C --> G["Output 4"]
    C --> H["Output 5"]

Refrigerant pipe installation

Allowable length of the refrigerant pipe and the installation examples

H/P

Classification Single Installation Module installation
Installing only with Y-joint	Outdoor unit	Outdoor unit
Installing with Y-joint and distribution header
Installing only with distribution header	Outdoor unit	Outdoor unit

Classification Example Remarks
Maximum allowable length of pipe	Outdoor unit ~ Indoor unit	Actual length (Equivalent length)	200m (656') and below [220m (722') and below]	Installing only with Y-joint	a+b+c+d+e+f+g+p ≤ 200m(220m)/656'(722')	Equivalent length Y-joint: 0.5m (1.64'), Distribution header: 1m (3.28')
				Installing with Y-joint and distribution header	a+b+h ≤ 200m(220m)/656'(722'), a+i+k ≤ 200m(220m)/656'(722')
				Installing only with distribution header	a+i ≤ 200m(220m)/656'(722')
		Total length of pipe (m)	1000m (3281') or less	Installing only with Y-joint	a+b+c+d+e+f+g+h+i+j+k+l+m+n+p ≤ 1000m
				Installing with Y-joint and distribution header	a+b+c+d+e+f+g+h+i+j+k ≤ 1000m (3281')
				Installing only with distribution header	a+b+c+d+e+f+g+h+i ≤ 1000m (3281')
	Outdoor unit ~ Outdoor unit (Module installation)	Pipe length	10m (33') or less	r ≤ 10m (33'), s ≤ 10m (33'), t ≤ 10m (33')
		Equivalent length	13m (43') or less	r ≤ 13m (43'), s ≤ 13m (43'), t ≤ 13m (43')

Classification Example Remarks
Maximum allowable height difference of pipe	Outdoor unit ~ Indoor unit	110/110m (361'/361') Note 2)		H1 ≤ 110/110m(361'/361')
	Indoor unit ~ Indoor unit	50m(164') or less H2 ≤ 50m(164')
		However, if only wall-mount type indoor units with a built-in EEV are connected, the height is 15 m or less.If a combination of wall-mount type indoor units with a built-in EEV and other types of indoor units is installed, the height is 30 m or less. However, even in this case, wall-mount type indoor units with a built-in EEV must be installed within 15 m from the indoor unit installed at the lowest place. (This has no relationship with the position of the outdoor unit.)* Applicable to H/P models only			30 m or less
Maximum allowable length after branch joint	First branch joint ~ Farthest Indoor unit	Pipe length	45m (148') or less	b+c+d+e+f+g+p ≤ 45m (148'), i ≤ 45m (148')
			45m~90m (148'~295') Note 1)	Required conditions must be satisfied

EEV kit Model name Remarks
EEV Kit ~ Indoor unit	Actual pipe length	2m(6.6') or less	MEV-E24SA	1 indoor	2 indoorMXD-E24K200AApply to products without EEV(Wall mounted & ceiling)
			MEV-E32SA
		20m(66') or less	MXD-E24K132A	2 indoorMXD-E24K200A
			MXD-E32K200A
			MXD-E24K232A	3 indoor
			MXD-E24K300A
			MXD-E32K224A
			MXD-E32K300A

* Please refer to the EEV Kit manual.

Note 1) Required condition

Classification Condition Example
First branch joint ~ Farthest Indoor unit	45m (148') ≤ b+c+d+e+f+g+p ≤ 90m (295'): branch pipes (b, c, d, e, f, g) size must be increased by 1 grade
Total length of extended pipe	If the size of pipe (main pipe), between the first branch joint and the outdoor unit, is not increased by 1 grade, a+(b+c+d+e+f+g)x2+h+i+j+k+l+m+n+p ≤ 1000m (3281')
	If the size of pipe (main pipe), between the first branch joint and the outdoor unit, is increased by 1 grade, a+(b+c+d+e+f+g)x2+h+i+j+k+l+m+n+p ≤ 1000m (3281')
Each Y-joint ~ Each indoor unit	h, i, j, ... p ≤ 45m (148')
Difference between the distance of the outdoor unit to the farthest indoor unit and nearest indoor unit ≤ 45m (148'), (a+b+c+d+e+f+g+p)-(a+h) ≤ 45m (148')

Note 2) When indoor unit is located at higher level than outdoor unit, allowable height difference is 110m(361'), (If the height difference is over 40m(131'), contact your local dealer for more information.) but when the indoor unit is located at lower level than outdoor unit, allowable height difference is 110m (361') (If the height difference is over 50m(164'), need to decide whether to install PDM kit or not.)
Model name of the PDM kit : MXD-A38K2A, MXD-A12K2A, MXD-A58K2A

Refrigerant pipe installation

Installing the branch joints

Branch joints must be installed 'horizontally' or 'vertically'.

Horizontal installation

Vertical installation

• For A\~J type branch joints: Connect the branch joint to the connection pipe with the provided reducer.
• For K\~Z type branch joints: Cut the connection part of the branch joint or the provided socket, according to the diameter of the connection pipe, before connecting them.

10mm~15mm (0.39~0.59 inch)

• Install the branch joint within ±15^ of the horizon or vertical line.
• Make sure that the pipe is not bent at where it is connected to the branch joint.
- Keep a minimum straight line distance of 500mm (20 inch) or more before connecting branch joint.

After branching Connect to other branch joint or indoor unit Pipe connection Socket After branching Socket After branching Connect to indoor unit Before branching Gas side/Liquid side branch joint Connect to indoor unit 30°

Install within ±15° of the horizon or vertical line.

Pipe (Main pipe) Minimum straight line [Over 500mm (20 inch)]

Installing the distribution header

1. Select the reducer that fits the diameter of the pipe.

Pipe* To outdoor unit Socket Provided item Socket Pipe* To indoor unit

Pipe* To outdoor unit Socket Socket Pipe* To indoor unit

* Pipe : Separately purchased item

1. If the number of connected indoor unit is fewer than ports on the distribution header, block the unused ports with caps.

Welding part Connect in order Provided item Case of blocking the unused distribution header ports

Connect in order Case of blocking the unused distribution header ports

NOTE

• For A\~J type distribution header :
Connect the distribution header to the connection pipe with the provided reducer.
• For K\~Z type distribution headers :
Cut the provided socket, according to the diameter of the connection pipe, before connecting it.

Pure mechanical component diagram without any text, numbers, or symbols

10mm~15mm (0.39~0.59 inch)

CAUTION

• Connect the indoor units in order, while respecting the direction of the arrow shown in the illustration.
• When indoor units are connected to same distribution head, indoor unit must be connected in order of their capacity, from largest to smallest.

Refrigerant pipe installation

3. Install the distribution header horizontally.

▶ Install the distribution header horizontally so that its ports does not face down.

Socket Distribution header Horizon line Below ±10° Pipe (Separately purchased item)

Horizon line Below ±15° < Liquid side > Horizon line

Horizon line Below ±15° Horizon line Below ±10°

Installing the branch joint between outdoor units

Installation of outdoor joints

High pressure gas pipe Gas pipe Liquid pipe Do not install the outdoor joint in this direction.

* High pressure gas pipe only applies to the H/R product.

To other outdoor unit * Use the attached reducer according to the selected pipe size. Reducer Pipe Pipe Reducer To other outdoor joint or outdoor unit To other outdoor joint or Y-joint of the main pipe

To other outdoor unit Pipe Reducer Pipe Reducer To other outdoor joint or outdoor unit * Use the attached reducer according to the selected pipe size. To other outdoor joint or Y-joint of the main pipe

To other outdoor unit Pipe Reducer Pipe Reducer To other outdoor joint or outdoor unit * Use the attached reducer according to the selected pipe size. To other outdoor joint or Y-joint of the main pipe

- Connect the Outdoor joint to the pipe by cutting the outlet of the Outdoor joint or provided reducer properly.

10mm~15mm (0.39~0.59 inch) or more

Electrical wiring work

Specification of the circuit breaker and power cable

Standard single (Heat Pump)

Model MCA MFA
AM080JXVAFH 28.0 40
AM100JXVAFH 34.0 50
AM120JXVAFH 36.0 50
AM140JXVAFH 50.0 63
AM160JXVAFH 56.1 63
AM180JXVAFH 66.5 75
AM200JXVAFH 73.0 80
AM220JXVAFH 70.0 80
AM240JXVAFH 70.0 80
AM260JXVAFH 73.0 80

* When installing outdoor units in module, select the power supply cable according to the sum of outdoor unit capacity. (Refer to the table for each model.)
* Power Supply cords of parts of appliances for outdoor use shall not be lighter than polychloroprene sheathed flexible cord. (Code designation IEC: 60245 IEC 66 / CENELEC: H07RN-F)

Standard single (Heat Pump)

Model MCA MFA
AM080JXVAJH/AZ 17.4 25
AM100JXVAJH/AZ 18.9 25
AM120JXVAJH/AZ 20.6 32
AM140JXVAJH/AZ 25.0 32
AM160JXVAJH/AZ 28.1 40
AM180JXVAJH/AZ 33.8 50
AM200JXVAJH/AZ 41.8 63
AM220JXAVJH/AZ 46.0 63

* When installing outdoor units in module, select the power supply cable according to the sum of outdoor unit capacity. (Refer to the table for each model.)
* Power Supply cords of parts of appliances for outdoor use shall not be lighter than polychloroprene sheathed flexible cord. (Code designation IEC: 60245 IEC 66 / CENELEC: H07RN-F)

CAUTION

Caution for electrical work

• You must install ELCB or MCCB + ELB
- ELCB: Earth leakage breaker
- MCCB: Molded case circuit breaker
- ELB: Earth leakage breaker

• Do not operate the outdoor unit before completing the refrigerant pipe work.
• Do not disconnect or change the cable inside the product. It may cause damage to the product.
• Specification of the power cable is selected based on following installation condition; culvert installation/ambient temperature 30^(86^) / single multi conductor cables. If the condition is different from the ones stated, please consult an electrical installation expert and re-select the power cable.

- If the length of power cable exceed 50m (164.04ft), re-select the power cable considering the voltage drop.

• Use a power cable made out of incombustible material for the insulator (inner cover) and the sheath (outer cover).
• Do not use the power cable with the core wire exposed due to insulator damage occurred during removal of the sheath. When the core wire is exposed, it may cause fire.

Exposed wire core Insulator (inner cover) Sheath (outer cover)

(The example of exposed core wire>

Electrical wiring work

Power and communication cable configuration

▶ Main power and the ground cable must be withdrawn through the knock-out hole on the bottom-right or right side of the cabinet.
▶ Withdraw the communication cable from the designated knock-out hole on the bottom-right side of the front part.
▶ Install the power and communication cable using separate cable protection tube.
▶ Fix a protection tube to the knock-out hole on the outdoor unit by using a CD connector or bushing. Make sure to use insulating bushing.

graph TD
    A["Main unit"] --> B["Sub unit Sub unit"]
    B --> C["Protection tube"]
    subgraph Main unit
        D["ELCB or MCCB+ ELB"]
    end
    subgraph Sub unit
        E["ELCB or MCCB+ ELB"]
    end
    subgraph Protection tube
        F["ELCB or MCCB+ ELB"]
    end
    subgraph Protection tube
        G["Ground cable"]
        H["Ground cable between outdoor units"]
        I["Power cable"]
        J["Power cable Power cable"]
    end
    subgraph Protection tube
        K["Communication cable"]
        L["Power • ground cable"]
    end
    subgraph Protection tube
        M["Communication cable between outdoor units"]
        N["Ground cable"]
        O["Ground cable between outdoor units"]
    end

Name Temper grade Applicable conditions
Flexible PVC conduit PVC		When the protection tube is installed indoor and not exposed to outside, because it is embedded in concrete structure
Class 1 flexible conduit Galvanized steel sheet		When the protection tube is installed indoor but exposed to outside so there are risk of damage to the protection tube
Class 1 PVC coated flexible conduit	Galvanized steel sheet and Soft PVC compound	When the protection tube is installed outdoor and exposed to outside so there are risk of damage to the protection tube and extra waterproof is needed

Caution for perforating the knock-out hole

• Perforate a knock-out hole by punching it with a hammer.
  • After perforating the knock-out hole, apply rust resisting paint around the hole.
• When you need to pass the cables through the knock-out hole, remove burrs on the hole and protection the cable with a protection tape or bushing etc.

Caution for installing communication cable

- When you connect the cable, it may sag and pressed by other parts. Therefore cables should be fixed to a clamp highlighted with a box on the illustration.

Architectural floor plan of an electrical cabinet or enclosure (no text or labels visible)

Path for arranging external communication cable
Fixing location of the external communication cable

Electrical wiring work

Power wiring diagram

graph TD
    A["3 phase 3wires 208-230V [AM*****XVAF*"]]
    B["3 phase 3wires 460V [AM*****XVAJ*"]]
    C["MCCB+ ELB or ELCB"] --> D["Main unit Sub unit 1 Sub unit 2"]
    E["MCCB+ ELB or ELCB"] --> D
    F["MCCB+ ELB or ELCB"] --> D
    G["Single phase 2 wires 208-230V"] --> H["MCCB+ ELB or ELCB"]
    I["Grounding"] --> J["Wired remote controller"]
    K["Grounding"] --> L["Wired remote controller"]
    M["Communication cable (Outdoor unit ~ Outdoor unit)"] --> N["Communication cable (Outdoor unit ~ Indoor unit)"]
    O["Communication cable (Outdoor unit ~ Indoor unit)"] --> P["Communication cable (Outdoor unit ~ Outdoor unit)"]
    Q["Main unit"] --> R["R S T"]
    Q --> S["F1 F2 OF2 R1 R2"]
    Q --> T["F1 F2 OF2 R1 R2"]
    U["Sub unit"] --> V["Main unit"]
    U --> W["Sub unit"]

▶ Connect a power cable of the outdoor unit after checking that R-S-T (3 phase 3 wire) is properly connected.
▶ Malfunction may occur if one or more of the wires among R-S-T phases (3 Phases-3 Wires) are not connected properly. (*Malfunction: Turning on/off, occurrence of error, consecutive reset)
▶ Communication cable between indoor and outdoor units and communication cable between outdoor units has no polarity.
▶ Arrange the cables with a cable tie.

* ELCB and ELB must be installed since there is risk of electric shock or fire when they are not installed.

Selecting solderless ring terminal

▶ Select a solderless ring terminal for a power cable according to the nominal dimensions for cable.
▶ Apply insulation coating to the connection part of the solderless ring terminal and the power cable.

R2 d2 Silver solder B F E L D1 d1

Nominal dimensions for cable [mm2 (inch2)]		4/6 (0.006/0.009)		10 (0.01) 16	(0.02) 25 (0.03) 35 (0.05) 50 (0.07) 70 (0.10)
Nominal dimensions for screw [mm (inch)]		4 (3/8) 8	(3/16) 8 (3/16) 8 (3/16) 8 (3/16) 8 (3/16) 8 (3/16) 8 (3/16) 8 (3/16) 8 (3/16) 8 (3/16) 8 (3/16) 8 (3/16) 8 (3/16) 8 (3/11)
B	Standard dimension [mm (inch)]	9.5 (3/8)	15 (9/16)	15 (9/16) 16	(10/16) 12 (1/2)		16.5 (10/16)	16 (10/16)	22 (7/8)	22 (7/8) 24 (1)
	Allowance [mm (inch)]	±0.2 (±0.007)		±0.2 (±0.007)	±0.2 (±0.007)	±0.3 (±0.011) ±0.3 (±0.011)				±0.3 (±0.011)	±0.4 (±0.015)
D	Standard dimension [mm (inch)]	5.6 (1/4)		7.1 (1/4)	9 (3/8)	11.5 (7/16)		13.3 (1/2)		13.5 (1/2)	17.5 (1/2)
	Allowance [mm (inch)]	+0.3 (+0.011) -0.2 (-0.007)		+0.3 (+0.011) -0.2 (-0.007)	+0.3 (+0.011) -0.2 (-0.007)	+0.5 (+0.019) -0.2 (-0.007)		+0.5 (+0.019) -0.2 (-0.007)		+0.5 (+0.019) -0.2 (-0.007)	+0.5 (+0.019) -0.4 (-0.015)
d1	Standard dimension [mm (inch)]	3.4 (1/8)		4.5 (3/16)	5.8 (1/4)	7.7 (5/16)		9.4 (3/8)		11.4 (7/16)	13.3 (1/2)
	Allowance [mm (inch)]	±0.2 (±0.007)		±0.2 (±0.007)	±0.2 (±0.007)	±0.2 (±0.007)		±0.2 (±0.007)		±0.3 (±0.011)	±0.4 (±0.015)
E Min. [mm (inch)]		6 (1/4)		7.9 (5/16)	9.5 (5/16)	11 (3/8)		12.5 (1/2)		17.5 (11/16)	18.5 (3/4)
F	Min. [mm (inch)]	5 (3/16)	9 (3/8)	9 (3/8)	13 (1/2)	15 (5/8)	13 (1/2)	13 (1/2)	13 (1/2)	14 (9/16)	20 (3/4)
L	Max. [mm (inch)]	20 (3/4)	28.5 (1-1/8)	30 (1-3/16)	33 (1-5/16)	34 (1-3/8)		38 (1-1/2)	43 (1-11/16)	50 (2)	51 (2)
d2	Standard dimension [mm (inch)]	4.3 (3/16)	8.4 (1-3/16)	8.4 (1-3/16)	8.4 (1-3/16)	8.4 (1-3/16)	8.4 (1-3/16)	8.4 (1-3/16)	8.4 (1-3/16)	8.4 (1-3/16)	8.4 (1-3/15)
	Allowance [mm (inch)]	+0.2 (+0.007) 0 (0)	+0.4 (+0.015) 0 (0)	+0.4 (+0.015) 0 (0)	+0.4 (+0.015) 0 (0)	+0.4 (+0.015) 0 (0)		+0.4 (+0.015) 0 (0)		+0.4 (+0.015) 0 (0)	+0.4 (+0.015) 0 (0)
t	Min. [mm (inch)]	0.9 (0.03)		1.15 (0.04)	1.45 (0.05)	1.7 (0.06)		1.8 (0.07)		1.8 (0.07)	2.0 (0.078)

Electrical wiring work

Connecting the power terminal

Connect the cables to the terminal board with solderless ring terminals.

▶ Properly connect the cables by using certified and rated cables and make sure to fix them properly so that external force is not applied to the terminal.
▶ Use a driver and wrench that can apply the rated torque when tightening the screws on the terminal board.
▶ Tighten the terminal screws by complying rated torque value. If the terminal is loose, fire can occur due to arc heat generation and if the terminal is too tight, terminal board could get damaged.

Solderless ring terminal Cable tie Thin cable Thick cable When connecting two cables to one terminal, separate the solderless terminal up and down to prevent it from getting loose. Place the thin cable upward and the thick cable downward. Fix the power cable with a cable tie. The place where the sheath of the power supply cable is removed. Connector Power cable protection tube

• When removing the outer sheath of the power supply cable, be careful not to scratch the inner sheath of the cable.
• Make sure that more than 20 mm (0.79 inch) of the outer sheath of the indoor unit power and communication cable are inside the electrical component box.
  • Install the communication cable separately from power cable and other communication cables.

Screw	Tightening torque for terminal		Remarks
	N·m lbf·ft
M4 1.2~1.8	0.9~1.3 Single phase	208~230V power cable
M8 5.5~7.3	4.1~5.4 3 phase 208	~230V / 460V power cable

1. Adjust the blade position by coin. (Controller is at the bottom side of the tool.) Fix the blade position according to the outer sheath thickness of the power cable.
2. Fix the power cable and tool by using the hook at the top side of the tool.
3. Cut out the outer sheath of the power cable by revolving the tool in the direction of the arrow, two or three times.
4. At this situation, cut out the outer sheath of the power cable by moving the tool toward the direction of the arrow.
5. Slightly bend the wire and pull out the cut part of the outer sheath.

Illustration of a hand holding a tool with multiple sequential steps showing motion (no text or symbols)

Electrical wiring work

Fixing the power cable

3 phase 3wires 208-230V [AM* * * * XVAF*] 3 phase 3wires 460V [AM* * * * XVAJ*] ELCB or MCCB+ ELB Sub unit communication cable

• Do not let the power cable come into contact with the pipes inside the outdoor unit. If the power supply cable touches the pipes, the vibration of the compressor is transferred to the pipes and can damage the power supply cables or pipes, creating the danger of fire or explosion.
• Make sure that the place where the sheath of power supply cable is removed is inside the power supply box. If it is impossible, you should connect the protection tube for power cable to the power supply box.
  • After arranging the power cable into the power supply box, tighten the cover.

Connect the ring terminal of 3 phase cable

1. Cut the power cable to an appropriate length and connect it with the solderless terminal.
2. After connecting the power cable to the terminal as seen in the illustration, fix it with cable tie.
3. Fix the housing, which has an insulator, to the terminal board.

Top-down schematic of an electronic device layout showing internal components and connections (no text or labels)

Fixing the ground cable

Connect the ground cable to the grounding hole inside the power supply box.

BOX Grounding

Withdrawing the power cable

▶ Withdrawing from the front side

• Connect the power cable protection tube into the power supply box as shown picture.
• Be sure that the power supply cable is not damaged by burr on the knock-out hole.

Technical line drawing of an electrical enclosure with internal components and a cable (no text or symbols)

Electrical wiring work

Installing the Solution device

When the number of indoor units installed with the outdoor unit is 16 or less

F1 Terminal block with indoor unit F2 OF1 Terminal block with outdoor unit sub module OF2 R1 Terminal block with solution device R2

Grounding work

Grounding must be done by a qualified installer for your safety.

Grounding the power cable

The standard of grounding may vary according to the rated voltage and installation place of the air conditioner.

▶ Ground the power cable according to the following table.

Installation place\Power condition	Voltage to ground is lower than 150V Voltage to ground is over 150V
High humidity	Must perform the grounding work 3. Note 1)(Including the case where earth leakage breaker is installed)
Average humidity Perform grounding work 3. Note 1)	Must perform the grounding work 3. Note 1)(Including the case where earth leakage breaker is installed)
Low humidity	Perform grounding work 3, if possible, for your safety. Note 2)

Note 1) About grounding work 3.

• Grounding work must be done by an expert (with qualification).
- Check if the grounding resistance is lower than 100Ω. When installing a earth leakage breaker (that can cut the electric circuit within 0.5 second in case of a short circuit), allowable grounding resistance should be 30\~500Ω.

Note 2) Grounding at dry place

- The grounding resistance should be lower than 100 . Even in worst case, grounding resistance should be lower than 250 .

Performing the grounding work

▶ Use a rated grounding cable by referring to the specification of the electric cable for the outdoor unit.

* When using the exclusive grounding terminal (When the grounding terminal is already built on the house)

* When using grounding of the switch board

Exclusive grounding terminal

Distributing board

Air tightness test and vacuum drying

Air tightness test

▶ Use tools for R-410A to prevent the inflow of foreign substances and resist against the internal pressure.

▶ Do not remove the core of filling port.
▶ Use Nitrogen gas for air tightness test as shown in the illustration.

H/P

Manifold gage Low pressure side High pressure side Filling port Service valve Gas pipe Liquid pipe Nitrogen gas

graph TD
    A["Apply pressure to the liquid side pipe and gas side pipe (when installing outdoor units in module) with Nitrogen gas at 4.1MPa(594.6psi)."] --> B["Keep it for minimum 24 hours to check if pressure drops."]
    B --> C["If the pressure drops, check for gas leakage."]
    C --> D["Maintain 1.0MPa(145psi) of the pressure before performing vacuum drying and check for further gas leakage."]

If you apply pressure at more than 4.1MPa(594.6psi), pipes may get damaged. Apply pressure with pressure regulator and pay attention to the pressure of the nitrogen.

After applying Nitrogen gas, check there's any change of pressure, using a pressure regulator.

If the pressure is changed, apply soap water to check for leakage and check the pressure of the nitrogen gas again.

After checking the first gas leakage, maintain 1.0MPa(145psi) to check for further gas leakage.

• Perform a Nitrogen gas leak test with the service valve of the outdoor unit closed.
- When charging the nitrogen gas, charge it from the both (high·low pressure) sides.
- If the pipe is filled in a short time with a highly excessive pressure of Nitrogen gas, the pipes may get damaged. Make sure to use a regulator to prevent the high pressure Nitrogen gas, over 4.1MPa(594.6psi), from entering into the pipe.

Vacuum drying pipes and indoor units

▶ Use tools for R-410A to prevent the inflow of foreign substances and resist against the internal pressure.
▶ Use vacuum pump that allows vacuuming under -100.7kPa (5 Torr).
▶ Use the vacuum pump with the check valve to prevent pump oil from flowing backward while the vacuum pump is stopped.
▶ Completely close the liquid-gas side service valve of the outdoor unit.

graph TD
    A["Connect the manifold gauge to the liquid side pipe and gas side pipe (when installing outdoor units in module)."] --> B["Perform vacuum drying of the liquid side pipe and gas side pipe (when installing outdoor units in module) using a vacuum pump."]
    B --> C["While the vacuum gauge pressure is less than -100.7 kPa (5 Torr), perform the vacuum drying for more than 1 hour and close the valve."]
    C --> D["After vacuum pump stops, check whether the pressure is maintained within -100.7 kPa (5 Torr) for an hour."]
    D --> E{Over -100.7 kPa (5 Torr)}
    E -->|Yes| F["Check for gas leakage"]
    E -->|No| G["Charge additional refrigerant to the pipe"]
    F --> H["Vacuum destruction<br>• Apply nitrogen gas to the pipe at pressure of 0.05 Mpa(7.25psi)."]
    H --> I["Perform vacuum drying again"]
    I --> J{Pressure increase}
    J -->|Yes| K["Check for gas leakage"]
    J -->|No| L["Charge additional refrigerant to the pipe"]
    K --> M["Vacuum release"]
    L --> N["Vacuum release"]
    style A fill:#f9f,stroke:#333
    style B fill:#f9f,stroke:#333
    style C fill:#f9f,stroke:#333
    style D fill:#f9f,stroke:#333
    style E fill:#ccf,stroke:#333
    style F fill:#ccf,stroke:#333
    style G fill:#ccf,stroke:#333
    style H fill:#ccf,stroke:#333
    style I fill:#ccf,stroke:#333
    style J fill:#ccf,stroke:#333
    style K fill:#ccf,stroke:#333
    style L fill:#ccf,stroke:#333
    style M fill:#ccf,stroke:#333

* If the pressure rises in an hour, either water is remaining inside the pipe or there is a leakage.
* When the ambient temperature of vacuuming pipe is low (less than 0°C (32°F)), moisture might remain within the pipe. Therefore, pay special attention to the pipe sealing in the winter.

Pipe insulation

Insulating the refrigerant pipes and branch joints

▶ Check for gas leakage before completing (the hose and pipe insulation) and if there is no sign of leakage, make sure to insulate the pipes and hoses.
▶ Use EPDM material insulator that meets the following conditions.

Test item Unit Standard
Density g/cm	^3	0.048~0.096
Dimensional change rate by heat % Below -5
Absorption rate g/cm	^3	Below 0.005
Thermal conduction rate W/m·K Below 0.037
Moisture transpiration factor ng/(m	^2 ·s·Pa) Below 15
Moisture transpiration grade g/(m	^2 ·24h) Below 15
Formaldehyde dispersion mg/L	There should be none
Oxygen rate	%	Over 25

Selecting the refrigerant pipe insulator

▶ Insulate the gas pipe and liquid pipe by referring to the thickness of insulator for each pipe size.
The standard condition is; temperature at 30^ C, humidity less than 85%. If case if the humidity is higher, you must increase the size by one grade as stated in below table.

Pipe	Outer diameter		Insulator (Cooling, Heating)				Remarks
			General[30°C (86°F), 85% ]		High humidity[30°C (86°F), over 85% ]
			EPDM, NBR
	mm	inch	mm	inch	mm	inch
Liquid pipe	6.35~9.52	1/4~3/8	9	3/8	9	3/8	Heating resisting temperature over 120°C(248°F)
	12.7~50.8	1/2~2	13	1/2	13	1/2
Gas pipe	6.35	1/4	13	1/2	19	3/4
	9.52~25.4	3/8~1	19	3/4	25	1
	28.58~44.45	1 1/8~1 3/4	19	3/4	32	1 1/4
	50.8	2	25	1	38	1 1/2

* When installing insulation in places and conditions below, use the same insulation that is used for high humidity conditions.

• High humidity places such as shoreline, hot spring, near lake or river, and ridge (when the part of the building is covered by earth and sand.)
  
• Restaurant ceiling, sauna, swimming pool etc.
  
• The ceiling frequently exposed to moisture and cooling is not covered. (e.g. The pipe installed at a corridor of a dormitory and studio or near an exit that opens and closes frequently.")
• The place where the pipe is installed is highly humid due to the lack of ventilation system.

Insulate the refrigerant pipe

▶ Make sure to insulate the refrigerant pipe, branch joint, distribution header, and the connection part of the pipes.

If you insulate the pipes, condensed water will not fall from the pipes.
▶ Check if there are any cracks on the insulation at the bent part of the pipe.

Insulator Clamp Insulator Gas side pipe Liquid side pipe

Insulator Indoor unit Install the insulation to be overlapped Fix securely without any gap.

Insulating pipes Insulating pipes connected behind the EEV kit

• The insulation of the gas and liquid pipes can be in contact with each other but they should not press excessively against each other.
• When the gas side and liquid side pipes are contacting each other, increase the thickness of the insulation by one grade.

Insulator Gas pipe Insulator Liquid pipe

• When installing the gas side and liquid side pipes, leave at least 10mm (3/8") of space.
• When the gas side and liquid side pipes are contacting each other, increase the thickness of the insulation by one grade.

10mm (3/8") 10mm (3/8") 10mm (3/8") Gas pipe Liquid pipe

Install the insulation without any gaps or cracks and use adhesive on the connection part of it to prevent moisture from entering.

• Bind the refrigerant pipe with insulation tape if it is exposed to outside sunlight. (When binding the pipe with finishing tape, be careful not to reduce the thickness of the insulation.)
  • Install the refrigerant pipe respecting that the insulation does not get thinner on the bent part or hanger of pipe.
• When the thickness of insulation is reduced, reinforce the reduced thickness with additional insulation.

Additional Insulator Hanger a x 3 Insulator for refrigerant pipe

Pipe insulation

Insulate the distribution header

▶ Fix the distribution header with a cable tie and cover the connected part.

▶ Insulate the distribution header and the welded part and wrap the connected part with an adhesive insulation tape to prevent dew formation.

Insulation

Adhesive insulation tape Insulate the distribution header Insulate the refrigerant pipe

Insulate after welding a stopper Adhesive insulation tape

▶ Fix the distribution header with a hanger after insulating it.

Pure mechanical assembly diagram showing a support structure with no text or symbols

Pure mechanical assembly diagram showing a beam supported by rods with no text or symbols

Insulating the branch joint

▶ Tightly attach the insulator, provided with the branch joint, to the separately purchased insulator. Wrap the connected part with an insulator (separately purchased item) that has thickness of at least 10mm (0.39 inch).
▶ Use an insulator that resist heat up to 120^ C. Wrap the branch joint with an insulation that has thickness of at least 10mm (0.39 inch).

Pipe insulator

(Separately purchased item) Fix securely without any gap. 150mm (5.90 inch) Branch joint Provided Insulator Fix securely without any gap. Pipe insulator (Separately purchased item)

Thickness of the insulator (Separately purchased item) should be thicker than 10mm (0.39 inch).

Insulation tape (Separately purchased item)

Pipe Pipe insulator (Separately purchased item)

* Attach the adhesive insulation tape to the pipe, as shown in the picture, after insulating the pipe.

Insulating the pipe located inside of the outdoor unit

▶ With a pipe insulator, insulate the pipe up to whole service valve located inside of the outdoor unit.
▶ Seal the gap between the outdoor unit pipe and the insulator. Rainwater and dewdrops may soak through the gap between the pipe and the insulation of the outdoor unit installed on the outside.
Separate the cover of the pipe and close it after insulation work. Only remove a knock-out hole cover where the pipe will be installed. If the knock-out hole is open unnecessarily, it must be closed. If not, small animals such as squirrels and rats may get into the unit through the hole and the unit may be damaged.

H/P

Technical line drawing of industrial piping and valves (no text or symbols)

Technical line drawing of a mechanical assembly with cylindrical components and mounting brackets (no text or symbols)

Charging additional refrigerant

▶ R-410A refrigerant is blended refrigerant. Add refrigerant in liquid form only. (Make sure to use the refrigerant bomb in upright position)
▶ Measure the quantity of the refrigerant according to the length of the liquid side pipe. Add fixed quantity of the refrigerant using a scale.

Single installation

▶ Open the manifold gauge valve connected to the liquid side service valve and add the liquid refrigerant.
▶ If you cannot add the whole quantity of the refrigerant while the outdoor unit is stopped, open the gas side and liquid side service valve. Then, add remaining refrigerant by pressing the refrigerant adding button of the outdoor PCB.

graph TD
    A["R-410A (Inject liquid refrigerant)"] --> B["Scale"]
    B --> C["Vacuum port"]
    C --> D["Manifold gage"]
    D --> E["Service valve"]
    D --> F["Liquid side"]
    F --> G["Outdoor unit"]
    G --> H["Gas side"]
    H --> I["Valve"]
    style A fill:#f9f,stroke:#333
    style B fill:#ccf,stroke:#333
    style C fill:#cfc,stroke:#333
    style D fill:#fcc,stroke:#333
    style E fill:#ffc,stroke:#333
    style F fill:#cff,stroke:#333
    style G fill:#ffc,stroke:#333
    style H fill:#cfc,stroke:#333
    style I fill:#ffc,stroke:#333

Module installation

▶ Open the manifold gauge valve connected to the liquid side service valve and add the liquid refrigerant.
▶ If you cannot add the whole quantity of the refrigerant while the outdoor unit is stopped, open the gas side and liquid side service valve. Then, add remaining refrigerant by pressing the refrigerant adding button of the outdoor PCB.
If you use the refrigerant charging function from the PCB, outdoor unit will operate and charge the refrigerant. At this time, you must use gas side manifold gauge for cooling operation and use charging port for heating at the manifold gauge for heating operation.

graph TD
    A["R-410A (Inject liquid refrigerant)"] --> B["Scale"]
    B --> C["Manifold gage"]
    C --> D["Vacuum port"]
    D --> E["Liquid side pipe"]
    E --> F["Outdoor unit"]
    F --> G["Service valve"]
    F --> H["Liquid side"]
    H --> I["Outdoor unit"]
    style A fill:#f9f,stroke:#333
    style F fill:#ccf,stroke:#333
    style G fill:#cfc,stroke:#333

CAUTION

• Open the gas side and liquid side service valve completely after charging the refrigerant. (If you operate the air conditioner with the service valve closed, the important parts may be damaged.)
• Put on safety equipment when charging refrigerant.
• Do not charge the refrigerant when you adjust or control other product such as indoor units or EEV kits.
• If you charge the refrigerant with the front cabinet open, be very careful with the fan on the top of the product to prevent personal injury.
• When the ambient temperature is low in winter time, do not heat the refrigerant container to speed up the charging process. There is risk of explosion.
• Beware for possibility of refrigerant leakage when you connect the manifold gauge to the charging port for heating.
• Close the valve of the refrigerant container immediately after charging the refrigerant. If not, there might be a change in entire amount of refrigerant.

Using service valve for gas

▶ After charging the refrigerant, close all caps as shown in the illustration.
▶ Tightening torque for the cap of refrigerant charging port 10\~12N·m (7.4 \~ 8.9 lbf·ft)
▶ Tightening torque for the cap of control part 20\~25N·m (14.8 \~ 18.4 lbf·ft)
▶ Opening/closing torque for the valve - Over ∅19.05mm (∅3/4inch) : 10 N·m (7.4 lbf·ft)

Cap for the control part

Cap for the refrigerant charging port

Pure mechanical diagram of a pipe fitting with no text or symbols

Basic segment display

Step Display content	Display
At initial power input Checking segment display		SEG 1 SEG	2 SEG 3 SEG 4
		“8” “8” “8” “8”
While setting communication between indoor and outdoor unit (Addressing)	Number of connected indoor units	SEG 1 SEG	2 SEG 3 SEG 4
		“A”“d”		Number of communicated units* Refer to "View Mode" for communication address
After communication setting (usual occasion)	Transmit/Reception address	SEG 1 SEG	2 SEG 3 SEG 4
		I/U:“A”MCU:“C”	I/U:“0”MCU:“1”	Reception address (in decimal number)

* I/U: Indoor unit

Setting outdoor unit option switch and key function

Setting outdoor unit option switches: A TYPE

graph TD
    A["Switch 58"] --> B["Switch 3"]
    C["Switch 28"] --> D["Switch 1"]
    E["Switch 10"] --> F["Switch 2"]
    G["Switch 1"] --> H["Switch 3"]
    I["Switch 4"] --> J["Switch 2"]
    K["Switch 1"] --> L["Switch 3"]
    M["Switch 2"] --> N["Switch 1"]
    O["Switch 3"] --> P["Switch 2"]
    Q["Switch 1"] --> R["Switch 3"]
    S["Switch 2"] --> T["Switch 1"]
    U["Switch 3"] --> V["Switch 2"]
    W["Switch 1"] --> X["Switch 3"]
    Y["Switch 2"] --> Z["Switch 1"]
    AA["Switch 3"] --> AB["Switch 2"]
    AC["Switch 1"] --> AD["Switch 3"]
    AE["Switch 2"] --> AF["Switch 1"]
    AG["Switch 3"] --> AH["Switch 2"]

Switch Setting Function			Remarks
SW51 / SW52			Setting total number of installed indoor unitSW51: Tens digit, SW52: Units digit	Setting can be done from the main outdoor unit only (sub unit: setting is unnecessary)Ex) When 12 indoor units are installed → SW51: 1, SW52: 2
SW53	K6	On	Enable maximum capacity restriction for cooling operation	Restrict excessive capacity increase when operating indoor units with small capacity
		Off	Disable maximum capacity restriction for cooling operation	-
	K7 K8 Selecting outdoor unit address
	On	On	Outdoor unit address: No. 1	Main unit
	On	Off	Outdoor unit address: No. 2	Sub unit 1
	Off	On	Outdoor unit address: No. 3	Sub unit 2
	Off	Off	Outdoor unit address: No. 4	Sub unit 3

Setting outdoor unit option switches: B TYPE

Diagram showing a device front panel with labeled buttons K1 to K4 and a downward arrow pointing to the next panel.

▶ Setting outdoor install option

Step Button Display Description Note
Outdoor unit address
Step1	Outdoor unit display	od nd	Setting required -
Step2	Press (K1+K2) for 2 seconds	od 00	Unit address for module combination	00: Main unit
	K4 x 1 time	od 01		01: Sub1 unit
	K4 x 2 times 02	Sub2 unit 02
	K4 x 3 times	od 03		03: Sub3 unit
Step3	If it is main unit, go to step4. Otherwise, press K2 button for 2 seconds to save & exit (system will be reset)
Quantity of indoor units
Step4 Press K1		-td 00	Ready to set -
Step5	K2 x n times	-td X0	Tens digit (0 ~ 6)	Ex) 03: 3 units64: 64 units
	K4 x n times	-td 0X	Ones digit (0 ~ 9)
	*K4: Press for 2 seconds - automatic detection of indoor units' quantity
Step6	If it is heat recovery model, go to step 7. Otherwise, press K2 button for 2 seconds to save & exit (system will be reset)
Quantity of MCUs * Heat recovery model only
Step7 Press K1		AC 00	Ready to set -
Step8	K2 x n times	AC X0	Tens digit (0 ~ 1)	Ex) 03: 3 units16: 16 units
	K4 x n times	AC 0X	Ones digit (0 ~ 9)
	*K4: Press for 2 seconds - automatic detection of MCUs' quantity
Step9 K2: long		Ad 00	Save Restart
*Press K1 for 2 seconds to exit without save regardless of setting step.

graph TD
    A["Start"] --> B["Outdoor unit address"]
    B --> C{Main unit?}
    C -->|Yes| D["Quantity of indoor units"]
    C -->|No| E["MCUs"]
    D --> F{Heat recovery?}
    F -->|Yes| G["Quantity of MCUs"]
    F -->|No| E
    G --> H["Save"]

Setting outdoor unit option switch and key function

Installing and setting the option with tact switch and explanation of the functions

Setting the option

1. Press and hold K2 to enter the option setting. (Only available when the operation is stopped)

- If you enter the option setting, display will show the following. (If you have set the 'Emergency operation for compressor malfunction', 1 or 2 will be displayed on Seg 4.)

- Seg 1 and Seg 2 will display the number for selected option.

- Seg 3 and Seg 4 will display the number for set value of the selected option.

1. If you have entered option setting, you can shortly press the K1 switch to adjust the value of the Seg 1, Seg 2 and select the desired option. (Refer to pages 68\~71 for the Seg number of the function for each option)

Example)

1. If you have selected desired option, you can shortly press the K2 switch to adjust the value of the Seg 3, Seg 4 and change the function for the selected option. (Refer to pages 68\~71 for the Seg number of the function for each option)

Example)

1. After selecting the function for options, press and hold the K2 switch for 2 seconds. Edited value of the option will be saved when entire segments blinks and tracking mode begins.

- Edited option will not be saved if you do not end the option setting as explained in above instruction.

* While you are setting the option, you may press and hold the K1 button to reset the value to previous setting.

* If you want to restore the setting to factory default, press and hold the K4 button while you are in the option setting mode.

- If you press and hold the K4 button, setting will be restored to factory default but it doesn't mean that restored setting is saved. Press and hold the K2 button. When the segments shows that tracking mode is in progress, setting will be saved.

Optional item Input unit SEG1	SEG2	SEG3	SEG4	Function of the option Remarks
Emergency operation for compressor malfunction	Individual 0	0		0 0	Disabled	(Factory default)	E560 will occur when all the compressors are set as malfunction state.
				0	1	Set compressor 1 as malfunction state
				0	2	Set compressor 2 as malfunction state
Cooling capacity correction	Main 0 1			0	0	7-9 (Factory default in case of A type PBA)	Targeted evaporation temperature [°C]. (When low temperature value is set, discharged air temperature of the indoor unit will decrease)
				0	1	5-7 (Factory default in case of B type PBA)
				0 2 9	-11
				0 3 1	0-12
				0 4 1	1-13
				0 5 1	2-14
				0 6 1	3-15
Capcity correction for heating	Main 0 2			0 0 3	0 (Factory default)		Targeted high pressure [MPa]. (When low pressure value is set, discharged air temperature of the indoor unit will decrease)
				0	1	2 . 5
				0	2	2 . 6
				0	3	2 . 7
				0	4	2 . 8
				0	5	2 . 9
				0	6	3 . 1
				0	7	3 . 2
				0	8	3 . 3
Current restriction rate	Individual 0	3		0 0 1	100% (Factory default)		When restriction option is set, cooling and heating performance may decrease.
				0 1 9	5 %
				0 2 9	0 %
				0 3 8	5 %
				0 4 8	0 %
				0 5 7	5 %
				0 6 7	0 %
				0 7 6	5 %
				0 8 6	0 %
				0 9 5	5 %
				1 0 5	0 %
				1 1		No restriction
Oil collection interval	Main 0 4			0 0		Factory default
				0 1	Shorten the interval by 1/2
Temperature to trigger defrost operation	Main 0 5			0 0		Factory default
				0	1	Apply setting when the product is being installed in humid area such as near river or lake

Setting outdoor unit option switch and key function

Optional item Input unit SEG1	SEG2	SEG3	SEG4	Function of the option Remarks
Fan speed correction for outdoor unit	Individual 0	6		0 0 Factory default
				0 1 Increase fan speed	Increase the outdoor unit's fan speed to maximum valueDo not use this option in an ambient temperature over 54 °C. Failing to do so may overheat the fan motor, causing it to stop operating.
Silent mode Main 0 7				0 0 Disabled (Factory default)
				0 1 LEVEL 1 / Auto	Enables the silent mode for night-time in cooling mode (It operates automatically depending on the temperature.)However, if the external contact interface module (MIM-B14) is used, entering the silent mode is available with contact signal in cooling and heating mode.(A type PBA: this function is used in cooling mode.)
				0 2 LEVEL 2 / Auto
				0 3 LEVEL 3 / Auto
				0 4 LEVEL 4 / External contact
				0 5 LEVEL 5 / External contact
				0 6 LEVEL 6 / External contact
High-head condition setting	Main 0 8			0 0 Disabled (Factory default)
				0 1 Level 1 of height difference type 1 (Indoor unit is lower than outdoor unit)	When outdoor unit is located 40~80m above the indoor unit
				0 2 Level 2 of height difference type 1 (Indoor unit is lower than outdoor unit)	When outdoor unit is located over 80m above the indoor unit
				0 3 Height difference type 2 (Outdoor unit is lower than indoor unit)	When indoor unit is over 30 m above the outdoor unit
Long-pipng condition setting (Setting is unnecessary if high-head condition is set)	Main 0 9			0 0 Disabled (Factory default)
				0 1 LEVEL 1	When equivalent length of farthest indoor unit from the outdoor unit is between 100~170m
				0 2 LEVEL 2	When equivalent length of farthest indoor unit from the outdoor unit is over 170m
Energy saving setting (A type PBA)	Main 1 0			0 0 Disabled (Factory default)
				0 1 Enabled	Energy saving mode triggers when the room temperature reaches desired temperature while operating in heating mode.
Energy control Operation (B type PBA)	Main 10			00 Basic (Factory default)			Energy control option of designated operation sequence* Operating in energy saving mode, capacity might e decrease compared to normal operation mode
				01 Energy saving
				0	2	P o w
Rotation defrost (HR only)	Main 11			00 Disabled (Factory default)
				01		Enabled	When enabled, continuous heating operation is possible but heating performance will decrease during rotation defrost operation
Expand operational temperature range for cooling operation (HR only)	Main 12			00 Disabled (Factory default)
				01		Enabled	When enabled, continuous cooling operation is possible even in low temperature condition up to -15°C, but noise of the MCU will increase
Channel address	Main 13			A	U	Automatic setting (Factory default)	Address for classifying the product from upper level controller (DMS, S-NET 3, etc.)
				0~15		Manual setting for channel 0~15
Snow accumulation prevention control	Main 14			00	Enabled (Factory default)		During snow accumulation, the fan may spin even when the unit is not in operation
				01		Disabled
Unused option	Main	1	5	0	0	Unused option	Unused option by this model
Unused option	Main	1	6	0	0	Unused option	Unused option by this model
Speed operation	Main 17			00 Disabled (Factory default)			Enabling this setting will command the air conditioner to cool/heat faster at initial start-up However, this function will not work when High-head condition setting or Long-piping condition setting is enabled.
				01		Enabled
Max. capacity restriction (B type PBA)	Main 18			00	Enabled (Factory default)		Restrict excessive capacity increase when operating indoor units with small capacity
				01		Disabled
Gasleak Pumpdown (B type PBA)	Main 19			00 Disabled (Factory default)			If the gas leak occurred it should be entered in the pumpdown operation.
				01		Enabled
Unused option	Main	2	0	0	0	Unused option	Unused option by this model
LA KIT option (B type PBA)	Main 21			00 Disabled (Factory default)			Set when LA Kit is installed.
				01		Enabled
Emergency operation for indoor unit communication error (B type PBA)	Main 22			00 Disabled (Factory default)			When set, emergency operation is possible even if an indoor communication error occurs.
				0	1	Indoor high humidity condition (operation for up to 12 hours)
				0	2	Indoor low humidity condition (operation for up to 24 hours)
Base Heater (B type PBA)	Main 23			00 Disabled (Factory default)			Set when Base Heater is installed.
				01		Enabled

Setting outdoor unit option switch and key function

Optional item Input unit SEG1		SEG2 SEG3 SEG4 Function of the option Remarks
Unused option Main 2 4 0 0 Unused option Unused option by this model
Cooling priority when using Aux heater (B type PBA)	Main 2 5			0 0 Disabled			When the Aux heater is connected to the cooling and heating operation at the same time, the outdoor unit gives priority to the cooling.
				0	1	30min (Delayed switching of heating)
				0 2 15min
				0 3 10min
				0 4 5min
				0 5 No heating switching delay
Auto Change Over (B type PBA)	Main 2 6			0 0 Disabled			If all indoor units are thermo off, auto changeover operation
				0 1 Enabled

Setting key operation and checking the view mode with tact switch

(A Type) K1 K2 K3 K4

(B Type) K1 K2 K3 K4

K1 control	KEY operation	Display on segment
Press and hold 1 time	Auto trial operation	"K""K""BLANK""BLANK"
K1 (Number of press)	KEY operation Display on segment
1 time Refrigerant charging in Heating mode "K" "1" "BLANK" "BLANK"
2 times Trial operation in Heating mode "K" "2" "BLANK" "BLANK"
3 times Pump out in Heating mode (Outdoor unit address 1) "K" "3" "BLANK" "1"
4 times Pump out in Heating mode (Outdoor unit address 2) "K" "3" "BLANK" "2"
5 times Pump out in Heating mode (Outdoor unit address 3) "K" "3" "BLANK" "3"
6 times Pump out in Heating mode (Outdoor unit address 4) "K" "3" "BLANK" "4"
7 times Vacuumig (Outdoor unit address 1) "K" "4" "BLANK" "1"
8 times Vacuumig (Outdoor unit address 2) "K" "4" "BLANK" "2"
9 times Vacuumig (Outdoor unit address 3) "K" "4" "BLANK" "3"
10 times Vacuumig (Outdoor unit address 4) "K" "4" "BLANK" "4"
11 times Vacuuming (All outdoor units) "K" "4" "BLANK" "A"
12 times End Key operation		-

K2 (Number of press)	KEY operation Display on segment
1 time	Refrigerant charging in Cooling mode	“K”“5”“BLANK”“BLANK”
2 times	Trial operation in Cooling mode “K” “6” “BLANK” “BLANK”
3 times	Pump down all units in Cooling mode	“K”“7”“BLANK”“BLANK”
4 times	Automatic setting of operation mode (Cooling/ Heating) for trail operation	“K”“8”“BLANK”“BLANK”
5 times	Checking the amount of refrigerant	“K” “9” X X (Display of last two digits may differ depending on the progress)
6 times	Discharge mode of DC link voltage	“K” “A” “BLANK” “BLANK”
7 times	Forced defrost operation	“K”“B”“BLANK”“BLANK”
8 times	Forced oil collection	“K”“C”“BLANK”“BLANK”
9 times	Inverter compressor 1 check	“K”“D”“BLANK”“BLANK”
10 times	Inverter compressor 2 check	“K”“E”“BLANK”“BLANK”
11 times	Fan 1 check	“K”“F”“BLANK”“BLANK”
12 times	Fan 2 check	“K”“G”“BLANK”“BLANK”
13 times End Key operation		-

Setting outdoor unit option switch and key function

* During "Discharge mode of DC link voltage", voltage of INV1 and INV2 will be displayed alternately.
* Even when the outdoor unit power is off, it is dangerous when you come in contact with inverter PCB and fan PCB since they are charged with high DC voltage.
* When replacing/repairing the PCB, cut-off the power and wait until the DC voltage is discharged before replacing/repairing them. (Wait for more than 15 minutes to allow it to discharge naturally.)
* When there were error, 'Dicharge mode of DC link voltage' may not have been effective. Especially if error E464 and E364 have been occurred, power element might be damaged by fire and therefore, do not use the 'Discharge mode of DC link voltage'.

K3 (Number of press)	KEY operation Display on segment
1 time Initialize (Reset) setting Same as initial state

graph TD
    A["Device Icon"] --> B["Arrow"]
    B --> C["Component Icon"]
    C --> D["TDI Icon"]
    C --> E["ON Icon"]
    C --> F["Other Icon"]
    style A fill:#f9f,stroke:#333
    style B fill:#ccf,stroke:#333
    style C fill:#cfc,stroke:#333
    style D fill:#fcc,stroke:#333
    style E fill:#cff,stroke:#333
    style F fill:#ffc,stroke:#333

(B Type) K1 K2 K3 K4

K4 (Number of press)	KEY operation	Display on segment
		SEG 1	SEG2, 3, 4
1 time Outdoor unit model 1			AM160FXV* * * * * → Off, 1, 6
2 times Order frequency (Compressor 1) 2			120 Hz → 1, 2, 0
3 times Order frequency (Compressor 2) 3			120 Hz → 1, 2, 0
4 times High pressure (MPa) 4			1.52 MPa → 1, 5, 2
5 times	Low pressure (MPa)	5	0.43 MPa → 0, 4, 3
6 times	Discharge temperature (Compressor 1)	6	87 °C → 0, 8, 7
7 times	Discharge temperature (Compressor 2)	7	87 °C → 0, 8, 7
8 times	IPM temperature (Compressor 1)	8	87 °C → 0, 8, 7
9 times	IPM temperature (Compressor 2)	9	87 °C → 0, 8, 7
10 times	CT sensor value (Compressor 1)	A	2 A → 0, 2, 0
11 times	CT sensor value (Compressor 2)	B	2 A → 0, 2, 0
12 times	Suction temperature	C	-42 °C → -, 4, 2
13 times COND OUT temperautre D			-42 °C → -, 4, 2
14 times	Temperature of liquid pipe E		-42 °C → -, 4, 2
15 times	TOP temperature (Compressor 1)	F	-42 °C → -, 4, 2
16 times	TOP temperature (Compressor 2)	G	-42 °C → -, 4, 2
17 times	Outdoor temperature	H	-42 °C → -, 4, 2
18 times	EVI inlet temperature	I	-42 °C → -, 4, 2
19 times	EVI outlet temperature	J	-42 °C → -, 4, 2
20 times	Main EEV1 step	K	2000 steps → 2, 0, 0
21 times Main	EEV2 step L		2000 steps → 2, 0, 0
22 times EVI	EEV step M		300 steps → 3, 0, 0
23 times HR	EEV step N		300 steps → 3, 0, 0
24 times Fan	step (SSR or BLDC) O		13 steps → 0, 1, 3
25 times Current frequency (Compressor 1) P			120 Hz → 1,2,0
26 times Current frequency (Compressor 2) Q			120 Hz → 1,2,0
27 times Suction 2 temperature (H/R) R			-42 °C → -, 4, 2
28 times Master	indoor unit address S		Master indoor unit not selected → BLANK, N, DIf indoor unit No.1 is selected as the master unit → 0, 0, 1

K4 (Number of press)Press and hold the K4 to enter the setting	Displayed content	Display on segment
		page1	page2
1 time	Main version MAIN		Version (ex. 1412)
2 times	Hub version	HUB	Version (ex. 1412)
3 times	Inverter 1 version	INV1 Version (ex. 1412)
4 times	Inverter 2 version	INV2 Version (ex. 1412)
5 times Fan 1	version FAN1 Version (ex. 1412)
6 times Fan 2	version FAN2 Version (ex. 1412)
7 times	EEP version	EEP	Version (ex. 1412)
8 times	Automatically assigned address of the units	AUTO	SEG1	SEG2	SEG3, 4
			Indoor unit: "A"MCU: "C"	Indoor unit: "0"MCU: "1"	Address (ex: 07)
9 times	Manually assigned address of the units	MANU	SEG1	SEG2	SEG3, 4
			Indoor unit: "A"	Indoor unit: "0"	Address (ex: 15)

Things to check after completing the installation

1. Before supplying the power, use DC 500V (AM* * * * XVAJ *) or DC 600V (AM* * * * XVAF *) insulation resistance tester to measure the power (3 phase: R, S, T) terminal and the outdoor unit grounding.

- Measurement should be over 30MΩ.

1. Before supplying the power, use a voltmeter and phase tester to check the voltage and the phase.

- R, S, T terminal: Check the 460V (AM****XVAJ*) or 230V (AM****XVAF*) between wires (R-S, S-T, T-R)

[AM****XVAJ*]

[AM****XVAF*]

• Never measure the communication terminal since communication circuit may get damaged.
- Check for short-circuit of the communication terminal with a general circuit tester.

1. Check if the R-410A indoor units are connected.

2. Check the following after the installation is completed.

Installation work	Outdoor unit	Have you checked the external surface and the inside of the outdoor unit?Is there any possibility of short-circuit caused by the heat of an outdoor unit?Is the place well-ventilated and ensures space for service?Is the outdoor unit fixed securely to withstand any external force?
	Indoor unit	Have you checked the external surface and the inside of the indoor unit?Is there enough space for service?Have you checked if the center of the indoor unit is ensured and it is installed horizontally?
Refrigerant pipe work		Have you selected correct pipes?Are the liquid and gas valve open?Is the total number of connected indoor units within the allowable range?Are the length and the height difference between the refrigerant pipes within the allowable range?Are the branch joints properly installed?Did you check the connection of liquid and gas pipes?Have you selected correct insulator for pipes and insulated them correctly?Did you insulate the pipes and connection part correctly?Is the quantity of the additional refrigerant correctly weighed in? (You must record the amount of additional refrigerant on the service record paper placed inside of the outdoor unit.)
Drain pipe work		Have you checked if the drain pipes of the indoor and outdoor unit are connected together?Have you completed the drain test?Is the drain pipe properly insulated?
Electrical wiring work		Are the power cable and communication cable tightened firmly on the terminal board within the range of rated tightening torque?Have you checked for cross-connection of the power and communication cables?Have you performed the earthing work 3 to the outdoor unit?Did you make sure to use 2-core cable (not multi-core cable) for the communication cable?Is the length of the wire within allowed range?Is the wiring route correct?
Setting address		Did you set the address of the indoor and outdoor units properly?Did you set the address of the indoor and outdoor units properly? (When using multiple remote controllers)
Option		If there is a possibility of the outdoor unit from vibrating, check whether the anti-vibration frame is correctly installed.

Inspection and test operation

CAUTION

Precautions before test operation

• When the outdoor temperature is low, turn on the main power 6 hours before beginning the operation.
• If you start the operation immediately after turning on the main power, it may cause serious damage to the part within the product.
• Do not touch the refrigerant pipe during or right after the operation.
• Refrigerant pipe may be hot or cold during or right after the operation depending on the status of the refrigerant which flows through the refrigerant pipe, compressor and other parts of the refrigerant cycle.
• Do not operate the product with its panel or protection nets off.
• There is risk of personal injury from the parts that rotates, heated or with the high voltage.
• Do not turn off the main power immediately after stopping the operation.
• Wait for at least 5 minutes before turning off the main power. If not, water leakage or other problems may occur.
• Connect all the indoor units and the power supply for the outdoor unit and run auto address setting. Run auto address setting even after changing the indoor unit PCB.

Checklist before auto trial operation

1. Check the power cable and communication cable of the indoor and outdoor unit.
2. Supply power to the outdoor unit 6 hours before trial operation to pre-heat the crank case heater.
3. Before supplying the power, use a voltmeter and phase tester to check the voltage and the phase.
4. R,S,T terminal: check the 460V between wires (R-S, S-T, T-R) (AM***XVAJ* Model only) / 230V between wires (R-S, S-T, T-R) (AM***XVAF* Model only).
5. When the power is supplied, outdoor unit will execute tracking to check the indoor unit connection and other optional functions.
6. Write down the installation report on the service history report paper attached on the front part of the control box.

CAUTION

• Supply power to the outdoor unit 6 hours before auto trial operation to pre-heat the crank case heater.

1. Guaranteed range of auto trial operation

For precise judgment, you must perform auto trial operation in below indoor/outdoor temperature condition.

• In Auto trial operation, product will automatically select either cooling or heating mode and operate in selected mode.
• In the temperature range marked with slashed pattern, system protection control may trigger during operation. (If the system protection control is enabled, it can be hard to get the precise judgment after the auto trial operation.)
• When the temperature is outside of guaranteed range, accuracy of judgment on auto trial operation may decrease near boarder line area.

Auto trial operation

1. If the Auto Trial Operation is not completed, normal operation will be prohibited.

2. When the auto trial operation is not completed, UP (UnPrepared) will appear on the segment after the communication check and restrict compressor from operating. (UP Mode will be cleared automatically when auto trial mode is completed.)

3. Auto trial operation may take 20 minutes to maximum 2 hours depending on the operation status.

4. During auto trial operation, noise can be generated due to vavle inspection. (Check the product if abnormal noise occurs continuously)

5. When error occurs during auto trial operation, check the error code and take appropriate measures.

6. Refer to next couple of pages when E503, E505 or E506 error occurs.

7. Refer to service manual if you need inspection or when other errors occur.

8. When auto trial operation ends, use S-NET pro or S-CHECKER to issue a result report.

9. Refer to service manual for further actions if you have any items with "inspection required" sign on the result report.

10. After taking appropriate measure for the items with "inpection required" sign, run the auto trial operation again.

11. Check the following items by running trial operation (cooling/heating).

12. Check if cooling/heating operation performs normally.

13. Individual indoor unit control: Check for air flow direction and fan speed.
14. Check for abnormal operation noise from the indoor and outdoor unit.
15. Check for proper draining from the indoor unit during cooling operation.

16. Use S-NET pro to check the detail operation status.

17. Explain to the user how to use the air conditioner according to the user's manual.

18. Hand over the installation manual to the customer so they can keep it with them.

19. Explain to the user how to use the air conditioner according to the user's manual.

20. Hand over the installation manual to the customer so they can keep it with them.

- Make sure to close the top and bottom part of the outdoor unit cabinet during operation. If you operate the unit with the front cabinet open, it may cause damage to the product and you may not get the precise data from S-NET pro.

Three-panel technical illustration of industrial electrical equipment with internal components (no visible text or symbols)

Three-panel technical illustration of internal electronic devices with visible internal components and wiring (no text or symbols)

Inspection and trial operation

Measure to take when E503 error occurs (When "inspection required" sign is appeared on result report of S-NET pro)

graph TD
    A{Is the service valve of the outdoor unit opened?}
    B["Open the service valve of the outdoor unit"] -->|No.| A
    A -->|Yes| C{Is 4way valve and main EEV operating normally?}
    C -->|No.| D["Check the 4way valve and Main EEV"]
    C -->|Yes| E{Is the quantity of the refrigerant appropriate?}
    D --> E
    E -->|No.| F["Check for leakage. Perform vacuuming and charge refrigerant"]
    E -->|Yes| G["1. Run trial operation mode for more than 30 minutes\n2. Run Fan mode for more than 10 minutes\n3. Restart the auto trial operation"]

* Symptoms for abnormal operation of the 4way valve

- Refrigerant noise is increased while compressor operates and temperature of the pipe inlet (H/P: Suction, H/R: Suction 2) remains over 10^ (50^) compared to low pressure's saturation temperature.

- Temperature of Eva. in/out remains below 0 °C (32 °F) during heating operation.

* Symptoms for abnormal operation of the Main EEV

- Error on controlling degree of superheat of compressor inlet during heating operation.

: If there's operation error while the EEV is fully opened, targeted degree of superheat [1 °C (33.8 °F)] cannot be secured [below 0 °C (32 °F)] and discharge temperature of the compressor will be low.

: If there's operation error while the EEV is fully closed, low pressure will decrease and the degree of superheat on the compressor inlet will increase excessively.

• If the service valve need to be detected, corresponding outdoor unit will display the error.
• If the service valve need to be detected, auto detection mode will end. Check both gas pipe and liquid pipe service valves when detecting service valve.
• When 4way valve, Main EEV detection is needed, run heating trial operation for more than 1 hour and analyze the data to check for a problem.
• If there's frost formed in outdoor unit or the outdoor unit is operating in deforst operation, it may be hard to detect problem normally. In this case, run heating trial operation for more than 1 hour.
• If the operation range is not within guaranteed range, error may occur even though the product is normal.

graph TD
    A["Eable vacuum mode on all outdoor units"] --> B{Is the service valve of the outdoor unit opened?}
    B -->|No.| C["Open the service valve of the outdoor unit"]
    B -->|Yes| D{Is the value on the pressure sensor of the installed outdoor unit satisfy the following? "Max./Min. value difference of low pressure > 2" "Max./Min. value difference of high pressure > 2"}
    D -->|No.| E["Reset outdoor unit"]
    E --> F["Run trial operation"]
    F --> G["Analyze cycle data\nCheck/replace the abnormal pressure sensor"]
    D -->|Yes| H["Disable vacuum mode on all outdoor units"]
    H --> I["End"]

• When the auto trial operation for pressure sensor was executed before the pressure of the outdoor unit is equilized (when there's close to no difference between high and low pressure), error may occur even though the product is normal.
  • If the pressure sensor need to be detected, all outdoor units will display the error.
  • If the pressure sensor need to be detected, auto trial operation mode will end.
• To check for the pressure sensor with the problem, run trial operation for more than 1 hour and analyze the data to check for a problem.

Automatic refrigerant amount detection function

This function detects amount of refrigerant in the system through refrigerant amount detection operation

graph TD
    A["Start"] --> B["Press the Tact switch "K2" 5 times"]
    A --> C["Input S-CHECKER signal"]
    B --> D["Satisfy the temperature condition Satisfy the temperature condition"]
    D --> E["Check the amount of refrigerant"]
    E --> F{Check stability Check stability}
    F -->|Yes| G["Connect S-Net Pro Judge the amount of refrigerant"]
    F -->|No| H["Judgment not available"]
    G --> I["Judge the amount of refrigerant"]
    I --> J["Judgment on the amount of refrigerant: Normal / Excessive / Insufficient"]
    J --> K["End"]
    C --> L["Check the amount of refrigerator"]
    L --> M{Check stability}
    M -->|Yes| N["End"]
    M -->|No| O["Judgment not available"]
    O --> P["Judgment on the amount of refrigerant: Normal / Excessive / Insufficient"]
    P --> K
    N --> Q["End"]

* After refrigerant amount detection is finished, if you see "K9 Ed" on the display and cannot check the refrigerant amount from the S-net pro and S-checker, it means insufficient degree of supercooling.

CAUTION

- If the temperature is out of the guaranteed range below, exact result will not be obtained.

- Indoor: 20\~32 °C

- Outdoor: 5\~43 °C

- If the operation cycle is not stable, the operation of refrigerant amount check may be forcibly finished.

- Accuracy of the result may decrease if the product has not been operated for a long period of time or heat mode has been operated before running the function of refrigerant amount check. Therefore, use the function of refrigerant amount check after operating the product in cool mode for at least 30 minutes.

- Product may trigger system protection operation depending on the installation environment. In this case, the result of refrigerant amount check may not be accurate.

Actions to take for the check result

• Excessive amount of refrigerant

- Discharge 5% of total amount of refrigerant and restart the refrigerant amount check.

• Insufficient amount of refrigerant

- Add 5% of the total amount of refrigerant and restart the refrigerant amount check.

• Insufficient degree of supercooling

- Add 10% of the total amount of refrigerant and restart the refrigerant amount check.

• Judgment not available

- Check if the function of refrigerant amount check is executed within the guaranteed temperature range. Run trial operation to check if there are other problems on the system.

Memo

SAMSUNG