HSU-12HEK03-R2 - Air conditioner HAIER - Free user manual and instructions

Product Type	Wall-mounted air conditioner
Brand	HAIER
Model	HSU-12HEK03-R2
Installation Type	Fixed (wall-mounted)
Power Supply	220-240 V ~ 50 Hz (estimated)
Cooling Capacity	12000 BTU/h
Heating Capacity	12000 BTU/h (heat pump)
Liquid Connection	6.35 mm (1/4")
Gas Connection	9.52 mm (3/8")
Max Piping Length	10 m
Max Elevation Difference	5 m
Provided Accessories	Remote control, batteries, mounting plate, drain hose, connection cable, cushions, etc.
Main Functions	Cooling, heating, dehumidification, ventilation
Filter Cleaning	Recommended every 15 days
Safety	Residual current circuit breaker recommended, mandatory grounding
Repairability	Spare parts available from the manufacturer

Frequently Asked Questions - HSU-12HEK03-R2 HAIER

How to install the indoor unit?

Fix the mounting plate horizontally on the wall. Hang the indoor unit on the upper hooks of the plate. Ensure it is securely fixed by moving it laterally. To remove it, lift the front slightly and tilt it.

How to purge the air from the refrigeration circuit?

Remove the cap of the 2-way valve. Loosen the gas line nut on the 3-way valve by half a turn. Open the 2-way valve 90° for about 10 seconds, then close it. Then open both valves and tighten the caps to the specified torque.

What is the maximum piping length?

For the 12K model, the maximum piping length is 10 meters. Beyond 5 meters, it is necessary to add 20 g of refrigerant per additional meter.

How to clean the filters?

Filters should be cleaned approximately every 15 days. Carefully remove them, wash with warm soapy water, rinse, and dry before putting them back.

What to do if the power cord is damaged?

The power cord must be replaced by the manufacturer, its after-sales service, or a qualified person, as special tools are required.

How to connect the electrical cable between the indoor and outdoor units?

Unscrew the terminal block cover on the indoor unit. Insert the cable ends into the terminals corresponding to the numbers (pay attention to matching the outdoor unit). Tighten the screws and secure the cable with the cover.

What is the maximum height difference between the units?

The maximum height difference between the indoor and outdoor units is 5 meters.

How to install the drain hose?

The drain hose must be installed with a downward slope to prevent water backflow. Do not bend it or submerge it. Insulate it if it passes through a heated room.

What to do if the unit does not cool?

First, check that the filters are clean and the outdoor unit is not obstructed. Ensure the remote control is in cooling mode and the set temperature is lower than the room temperature. If the problem persists, contact a professional.

How to use the remote control?

Insert two R03 batteries into the remote control. Point it at the indoor unit. Use the buttons to select the mode (cooling, heating, dehumidification, ventilation), adjust the temperature, and fan speed.

USER MANUAL HSU-12HEK03-R2 HAIER

Necessary Tools for Installation

1. Driver 2. Hacksaw 3. Hole core drill 4. Spanner (17, 19 and 26 mm)

5. Torque wrench (17 mm, 22 mm, 26 mm) 6. Pipe cutter 7. Flaring tool 8. Knife

9. Nipper

1. 10. Gas leakage detector or soap-and-water solution 11. Measuring tape

12. Reamer

Drawing for the installation of indoor and outdoor units

Accessory parts

No.	Accessory parts	Number of articles
①	Remote controller	1
②	R-03 dry battery	2
③	Mounting plate	1
④	Drain hose	1
⑤	Φ4X50 Steel nail, cement	6
⑥	Φ4X25 Screw Plastic cap	4
⑦	Drain-elbow	1
⑧	Cover	1
⑨	Cushion	4
⑩	Pipe supporting plate	1
⑪	Connecting cable	1

Optional parts for piping

Mark	Parts name
A	Non-adhesive tape
B	Adhesive tape
C	Saddle(L.S) with screws
D	Connecting electric cable for indoor and outdoor
E	Drain hose
F	Heating insulating material
G	Piping hole cover

Floor fixing dimensions of the outdoor unit (Unit: mm)

Fixing of outdoor unit

Fix the unit to concrete or block with bolts (φ 10 mm) and nuts firmly and horizontally. - When fitting the unit to wall surface, roof or rooftop, fix a supporter surely with nails or wires in consideration of earthquake and strong wind. - If vibration may affect the house, fix the unit by attaching a vibration-proof mat.

Indoor Unit

Selection of Installation Place

Outdoor Unit

• Place the unit on a stable surface that does not vibrate, where the body can be supported sufficiently.
• Place the unit away from heat or steam generated in the vicinity, and ensure that the inlet and outlet of the unit are not obstructed.
• Place the unit where drainage is easy and where piping can be connected to the outdoor unit.
• Place the unit where cold air can be distributed throughout the room.
• Place the unit near a power receptacle, with enough space around it. (Refer to the drawings.)
• Place the unit at a distance of more than 1 m from televisions, radios, wireless devices, and fluorescent lamps.
• If mounting the remote controller on a wall, place it where the indoor unit can receive signals even when the room's fluorescent lamps are on.
• Place the unit in a location that is less exposed to rain or direct sunlight and is well ventilated.
• Place the unit on a surface that can bear its weight, where vibration and noise are not increased.
• Place the unit where the discharged air and noise do not disturb the neighbors.
• Place the unit where the distance marked with arrows is available as illustrated in the figure above.

Power Source

Before inserting the power plug into the receptacle, check the voltage without fail. The power source must match the rating on the nameplate. Install an exclusive branch circuit for the power supply. The receptacle should be located within reach of the power cable. Do not extend the cable by cutting it.

Selection of pipe

• To this unit, both liquid and gas pipes shall be insulated as they become low temperature in operation.
• Use optional parts for piping set or pipes covered with equivalent insulation material.

	For 09	For 12
Liquid pipe (∅)	6.35mm(1/4")	6.35mm(1/4")
Gas pipe (∅)	9.52mm(3/8")	9.52mm(3/8")

1. Fitting of the Mounting Plate and Positioning of the wall Hole

When the mounting plate is first fixed

1. Carry out, based on the neighboring pillars or lintels, a proper leveling for the plate to be fixed against the wall, then temporarily fasten the plate with one steel nail.
2. Make sure once more the proper level of the plate, by hanging a thread with a weight from the central top of the plate, then fasten securely the plate with the attachment steel nail.
3. Find the wall hole location A using a measuring tape

When the mounting plate is fixed side bar and lintel

Fix to side bar and lintel a mounting bar, which is separately sold, and then fasten the plate to the fixed mounting bar. Refer to the previous article, "When the mounting plate is first fixed", for the position of wall hole.

2. Making a Hole on the Wall and Fitting the Piping Hole Cover

Make a hole of 60 mm in diameter, slightly descending to outside the wall. - Install piping hole cover and seal it off with putty after installation

3. Installation of the Indoor Unit

Drawing of pipe

[ Rear piping ]

• Draw the pipes and the drain hose, then fasten them with the adhesive tape.

[Left • Left-rear piping]

• For left side piping, cut away the lid for left piping with a nipper.
• For left-rear piping, bend the pipes according to the piping direction to the mark of the hole for left-rear piping, which is marked on the heat insulation materials.

Indoor unit

1. Insert the drain hose into the dent of the heat insulation materials of the indoor unit.
2. Insert the indoor/outdoor electric cable from the backside of the indoor unit, pull it out on the front side, and then connect them.
3. Coat the flaring seal face with refrigerant oil and connect the pipes.

Cover the connection part with heat insulation materials closely, and make sure to fix it with adhesive tape.

• The indoor/outdoor electric cable and drain hose must be bound with the refrigerant piping by protective tape.

[Other direction piping]

• Cut away the lid for piping with a nipper according to the piping direction, and then bend the pipe according to the position of the wall hole. When bending, be careful not to crush the pipes.
• Connect the indoor/outdoor electric cable beforehand, and then pull out the connected part to the heat insulation of the connecting part specially.

Fixing the indoor unit body

• Hang the unit body surely onto the upper notches of the mounting plate. Move the body from side to side to verify its secure fixing.
• In order to fix the body onto the mounting plate, hold up the body aslant from the underside and then put it down perpendicularly.

Unloading of indoor unit body

• When you unload the indoor unit, please use your hand to arise the body to leave agraffe, then lift the bottom of the body outward slightly and lift the unit aslant until it leaves the mounting plate.

Indoor unit

Connecting the indoor/outdoor Electric Cable

Removing the wiring cover

• Remove terminal cover at right bottom corner of indoor unit, then take off wiring cover by removing its screws.

When connecting the cable after installing the indoor unit

1. Insert from outside the room cable into left side of the wall hole, in which the pipe has already existed.
2. Pull out the cable on the front side, and connect the cable making a loop.

When connecting the cable before installing the indoor unit

• Insert the cable from the back side of the unit, then pull it out on the front side.
• Loosen the screws and insert the cable ends fully into terminal block, then tighten the screws.
• Pull the cable slightly to make sure the cables have been properly inserted and tightened.
• After the cable connection, never fail to fasten the connected cable with the wiring cover.

Note: When connecting the cable, confirm the terminal numbers of the indoor and outdoor units carefully. If wiring is not correct, proper operation cannot be carried out and will cause defects.

1. If the supply cord is damaged, it must be replaced by the manufacturer or its service agent or a similar qualified person. The type of connecting wire is H05/07RN-F or 245IEC57(YZW).
2. If the fuse on the PC board is broken, please change it with the type T. 3.15A/250V.
3. The wiring method should be in line with the local wiring standards.
4. After installation, the power plug should be easily accessible.
5. A breaker should be incorporated into the fixed wiring. The breaker should be an all-pole switch and the distance between its two contacts should be not less than 3 mm.

Power cable: ≥ 3G1.5 mm²

Outdoor unit

1. Installation of Outdoor Unit

Install according to the drawing for the installation of indoor and outdoor units.

2. Connection of pipes

• To bend a pipe, give the roundness as large as possible to avoid crushing the pipe.
• Connecting the pipe on the gas side first makes working easier.
• The maximum vertical distance between the indoor unit and the outdoor unit is 5 m.

Forced fastening without careful centering may damage the threads and cause a leakage of gas.

Pipe Diameter (Φ)	Fastening torque
Liquid side 6.35mm(1/4")	18N.m
Gas side 9.52mm(3/8")	42N.m

Be careful that matters, such as sand wastes, etc., shall not enter the pipe.

3. Connection

• Use the same method on the indoor unit. Loosen the screws on the terminal block, insert the plugs fully into the terminal block, then tighten the screws.
• Insert the cable according to the terminal number in the same manner as for the indoor unit.
• If wiring is not correct, proper operation cannot be carried out and the controller may be damaged. Fix the cable with a clamp.

4. Attaching Drain-Elbow

• If the drain-elbow is used, attach it as shown in the figure. (Note: Only for heat pump units.)

Outdoor unit

5. Purging Method:

Push the air out of the indoor unit and piping as follows:

(1) Remove the valve cap on the 2-way valve in the outdoor unit. (2) Loosen by 1/2 turn the flare nut of the gas pipe, which is connected to the 3-way valve. (3) Loosen the 2-way valve by 90° using a hexagon wrench, and after approximately 10 seconds tighten it up. Gas comes out through the flare nut on the wide pipe. If no gas is discharged, tighten the flare nut with the specified torque. (4) Open the 2-way and 3-way valves using the specified torque. (5) Tighten the caps on the valves with the specified torque.

	Tighten torque N.m
Valve rod	7-9
Valve cap	20-25

• When the connecting pipe exceeds 5 meters, 20g of refrigerant shall be added per exceeding meter. Charge according to the following list.

	for 9k 12k
Piping length	5m	7m	10m
Additional amount	No need	40g	100g

2-way valve 3-way valve Ø6.35mm (1/4") 9.52mm (3/8")

Max. Elevation: 5m

for 9K: A=7m for 12K: A=10m CAUTION: In case of more than 5m, an oil trap should be installed every 5~7m.

• No more gas if the length of the connecting pipe is less than 7m (9K) or 10m (12K).
• The height difference between any two indoor or outdoor units cannot exceed 5 m.
• Note: When extending piping, air inside piping shall be removed by using external refrigerant gas, charge according to the following list.

Brand new outdoor unit is charged 50g more refrigerant than regulated weight. Only for first installation, this extra 50g can be used to purge air in pipes.

*1 During this procedure, 50g refrigerant will be discharged in piping.

(This must be strictly controlled within 90° and 10 sec.)

1. Power Source Installation

• The power source must be exclusively used for air conditioner. (Over 10A)
• In the case of installing an air conditioner in a moist place, please install an earth leakage breaker.
• For installation in other places, use a circuit breaker as far as possible.

2. Cutting and Flaring Work of Piping

• Pipe cutting is carried out with a pipe cutter and burs must be removed. After inserting the flare nut, flaring work is carried out.

Flare tooling die

	Pipe diameter(φ)	Size A(mm)
Liquid side	6.35mm(1/4")	0.8~1.5
Gas side	9.52mm(3/8")	1.0~1.8
Gas side	12.7mm(1/2")	1.2~2.0

Correct	Incorrect
	Lean Damage of flare Crack Partial Too outside

3. On Drainage

Install the drain hose with a downward slope without fail. Do not drain as shown below.

It becomes high midway.

The end is immersed in water.

It waves.

The gap with the ground is too small.

There is a bad smell from a ditch.

• Pour water into the drain pan of the indoor unit and confirm that drainage is carried out surely to the outdoor.
• If the attached drain hose is in a room, apply heat insulation to it without fail.

Check for Installation and Test Run

• Please kindly explain to our customers how to operate through the instruction manual.

Check Items for Test Run

Put check mark ✓ in boxes

Gas leak from pipe connecting? Heat insulation of pipe connecting. Are the connecting wirings of indoor and outdoor firmly inserted to the terminal block? Is the connecting wiring of indoor and outdoor firmly fixed?

Is drainage securely carried out? Is the earth line securely connected? □ Is the indoor unit securely fixed? □ Is power source voltage abided by the code? □ Is there any noise?

□ Is the lamp normally lighting? Are cooling and heating (when in heat pump) performed normally? Is the operation of room temperature regulator normal?