MXD260 - Air-conditioner REMKO - Free user manual and instructions

USER MANUAL MXD260 REMKO

Exterior view of a black and silver air conditioning unit with ventilation grilles (no text or symbols visible)

Contents

Safety notes	4
Environmental protection and recycling	4
Warranty	4
Intended use	5
Transport and packaging	5
Equipment description	5
Combinations	6-7
Operation	8-14
shut-down	15
Care and maintenance	15-16
Troubleshooting and customer service	17-18
Installation instructions for qualified personnel	19
Installation	19-20
Condensate drain	20-21
Electrical connection	21
Electrical connection diagram and choice of unit	22
Electrical circuit diagram	22
Commissioning	23
Unit dimensions	23
Exploded view	25
Spare parts list	25
Technical data	26
EC-Declaration of Conformity	27

Safety notes

Carefully read the operating instructions before commissioning the equipment for service. It provides useful tips and information as well as hazard warnings to prevent injury or material damage. Failure to follow the directions in this manual can result in endangerment to persons, the environment and the equipment itself and will void any claims for liability.

• Keep this manual and the refrigerant data sheet near the unit.
  The unit should be set up and installed only by qualified personnel.
  The set-up, connection, and operation of the unit and its components must be in accordance with the operating conditions stipulated in this manual and comply with all applicable local regulations.
  ■ Mobile units must be set up securely on suitable surfaces and in an upright position. Stationary units must be permanently installed for operation.
  ■ Modification of equipment and components supplied by REMKO is not permitted and can cause malfunctions.
  ■ Equipment and components may not be operated in areas where there is an increased risk of damage. Observe the minimum clearances.
  ■ The electrical supply is to be adapted to the requirements of the equipment.

The operational safety of equipment and components is only assured if they are fully assembled and used as intended. Safety devices may not be modified or bypassed.
- Do not operate equipment or components with obvious defects or signs of damage.
All housing parts and openings in the device, e.g. air inlets and outlets, must be free of foreign objects, fluids, or gases.
The equipment and components must be kept an adequate distance from flammable, explosive, combustible, abrasive and dirty areas or atmospheres.
■ Touching some parts of the equipment can result in burns or other injury.
Installation, repair and maintenance work may be carried out only by authorised specialists. Visual inspections and cleaning can be performed by the operator as long as power is disconnected from the equipment.
To preclude any danger from the equipment, take appropriate hazard-prevention measures when performing installation, repair or maintenance work or cleaning the equipment.
The equipment or components are not to be exposed to any mechanical stresses, extreme levels of humidity or direct sunlight.

Environmental protection and recycling

Disposal of packaging

All products are packed for transport in environmentally friendly materials. Make a valuable contribution to reducing waste and sustaining raw materials. Only dispose of packaging at approved collection points.

Disposal of equipment and components

Only recyclable materials are used in the manufacture of the devices and components.

Help protect the environment by ensuring that the devices or components (for example batteries) are not disposed in household waste, but only in accordance with local regulations and in an environmentally safe manner, e.g. using certified firms and recycling specialists or at collection points.

Warranty

Prerequisites for possible warranty claims are that the ordering party or their representative has completely filled out the "warranty registration card" and commissioning report included with the unit at the time when the equipment was purchased and first put into operation and returned it to:

REMKO GmbH & Co. KG and placing the unit in service.

The warranty conditions are listed in the "General terms and conditions". Furthermore, only the parties to a contract can strike special agreements beyond these conditions. For this reason please contact your contractual partner in the first instance.

Intended use

Depending on the model, the equipment and the additional fittings with which it is equipped is only intended to be used as an air-conditioner for the purpose of cooling or heating the air in an enclosed room.

Different or additional use shall not be classed as intended use. The manufacturer/supplier assumes no liability for damages arising from an unintended use of the equipment. The user bears the sole risk in such cases.

Using the equipment as intended also includes working in accordance with the operating manual and installation instructions and complying with the maintenance requirements.

Transport and Packaging

The equipment is shipped in sturdy transport packaging. Immediately check the equipment on delivery and make note of any damage or missing parts on the delivery note and inform the forwarding agent and your contractual partner.

Warranty claims at a later date will not be accepted.

Equipment description

The indoor unit on the split-design combined room air conditioning units serves to extract heat from the indoor room being cooled. The outdoor unit then expels this heat to the outside.

If combined heating/cooling units are operated as heaters, the heat absorbed by the outdoor unit can be discharged by the indoor unit into the room being heated.

The unit is designed for installation high up on indoor walls. Operation takes place using an infrared remote control.

The indoor unit consists of a fin vaporiser, vaporiser fan, controller and condensation pan. The indoor unit can be combined with REM-KO outdoor units of series MVT 600/900/950/1050 DC with sufficient cooling output. The outdoor component is controlled via the controller of the indoor unit.

Condensation pumps are available as an accessory.

System layout Indoor area Condensation line Indoor unit Outdoor area Outdoor component Suction line Control cable Injection line Mains cable Stop valve Condenser fan Condensation line

Refrigerant pipes are used to connect the indoor unit to the outdoor unit.

Schematic of refrigerant circuit Vaporiser Vaporiser fan Connection to suction pipe Connection to injection line

REMKO MXD

Combinations

Interior units

Indoor units MXD 200-520 can be combined with MVT series outdoor units.

The following combinations are possible.

Outdoor unit MVT 600 DC

	MXD200	MXD260	MXD350
One indoor unit
Combination 1	●
Combination 2		●
Combination 3			●
Two indoor units
Combination 4	● ●
Combination 5		● ●
Combination 6	●	●
Combination 7	●		●
Combination 8		●	●

Outdoor unit MVT 900 DC

	MXD200	MXD260	MXD350
One indoor unit
Combination 1	●
Combination 2		●
Combination 3			●
Two indoor units
Combination 4	● ●
Combination 5		● ●
Combination 6			● ●
Combination 8	●	●
Combination 9	●		●
Three indoor units
Combination 13	● ● ●
Combination 14		● ● ●
Combination 15	● ● ●
Combination 16	● ● ●
Combination 17	● ● ●
Combination 18	● ● ●
Combination 19	● ● ●
Combination 20		● ● ●
Combination 21		●	●

Outdoor unit MVT 950 DC Outdoor unit MVT 1050 DC

	MXD200	MXD260	MXD350	MXD520
One indoor unit
Combination 1	●
Combination 2		●
Combination 3			●
Combination 4				●
Two indoor units
Combination 5	●●
Combination 6		●●
Combination 7			●●
Combination 8	●	●
Combination 9	●		●
Combination 10		●	●
Combination 11	●			●
Combination 12		●		●
Combination 13			●	●
Combination 14				●●
Three indoor units
Combination 15	●●●
Combination 16		●●●
Combination 17			●●●
Combination 18		●●●
Combination 19	●●●
Combination 20	●●●
Combination 21	●●●
Combination 22	●●●
Combination 23	●●●
Combination 24		●●●
Combination 25	●●●
Combination 26	●●●
Combination 27	●●●
Combination 28		●●●
Combination 29		●●●
Four indoor units
Combination 31	●●●●
Combination 32		●●●●
Combination 33	●●●●
Combination 34	●●●●
Combination 35	●●●●
Combination 36	●●●●
Combination 37	●●●●
Combination 38	●●●●
Combination 39		●●●●
Combination 40	●●●●
Combination 41	●●●●
Combination 42	●●●●

	MXD200	MXD260	MXD350	MXD520
One indoor unit
Combination 1	●
Combination 2		●
Combination 3			●
Combination 4				●
Two indoor units
Combination 5	●●
Combination 6		●●
Combination 7			●●
Combination 8	●	●
Combination 9	●		●
Combination 10		●	●
Combination 11	●			●
Combination 12		●		●
Combination 13			●	●
Combination 14				●●
Combination 15	●			●
Combination 16		●		●
Combination 17			●	●
Combination 18				●●
Three indoor units
Combination 19	●●●
Combination 20		●●●
Combination 21			●●●
Combination 22		●●●
Combination 23	●●●
Combination 24	●●●
Combination 25	●●●
Combination 26	●●●
Combination 27	●●●
Combination 28		●●●
Combination 29	●●●
Combination 30	●●●
Combination 31	●●●
Combination 32		●●●
Combination 33		●●●
Combination 34	●●●
Combination 35		●●●
Combination 36			●●●
Four indoor units
Combination 37	●●●●
Combination 38		●●●●
Combination 39	●●●●
Combination 40	●●●●
Combination 41	●●●●
Combination 42	●●●●
Combination 43	●●●●
Combination 44	●●●●
Combination 45		●●●●
Combination 46	●●●●
Combination 47	●●●●
Combination 48	●●●●
Combination 49	●●●●
Combination 50	●●●●
Combination 51	●●●●
Combination 52	●●●●
Combination 53	●●●●
Combination 54		●●●●
Combination 55	●●●●

REMKO MXD

Operation

The indoor unit is easily operated using the standard infrared remote control. The indoor unit beeps to acknowledge the correct transmission of data. If it is not possible to program the indoor unit using the remote control, it can also be manually operated.

Manual operation

The indoor units can be started manually.

Press the RESET button on the receiver unit of the cover to activate automatic mode. In manual mode, the following settings apply:

Cooling mode: 24 °C,

Fan speed AUTO

Heating mode: 26 °C,

Fan speed AUTO

Pressing any button on the infrared remote control interrupts manual mode.

Display on the indoor unit

The lit LED indicators show the settings.

LED H red = high fan speed

LED M yellow = medium fan speed

LED L green = low fan speed

Display on the indoor unit

UNIT FOR RECEIVING SIGNALS FROM THE REMOTE CONTROL OPERATION THERN DEF/TAN ALARM Operation indicator Timer indicator Fan Defrost Alarm indicator

infrared remote control

The infrared remote control sends the programmed settings over a distance of up to 6 m from the receiver of the indoor unit. Data will only be received correctly if the remote control is pointed at the receiver and no objects obstruct the transmission path.

First insert the batteries supplied on delivery

(2 x type AAA) into the remote control. To do so, pull off the flap of the battery compartment and insert the batteries according to their polarity (see markings).

Maximum distance

max. 6 m

CAUTION

Faults are indicated in code (see chapter Troubleshooting and Customer service).

NOTE

Immediately replace flat batteries with a new set, otherwise there is a risk of leakage. It is recommended that the batteries be removed if the equipment is shut down for long periods.

Keys on the remote control

SET TEMPERATURE(°C) AUTO COOL DRY HEAT FAN HIGH MED LOW TEMP ① ② ③ ④ ⑤ ⑥ ⑦ ⑧ ⑨ ⑩ ⑪ ⑫ ⑬ TEMP OFF TURING

Keys on the remote control

① "ON/OFF"key

Press this key to operate the unit.

② "▼" key

With this key, the desired temperature can be decreased to 17^ C.

③ "▲" key

With this key, the desired temperature can be increased up to 30^ C.

④ "MODE" key

Press this key to select the operating mode. The indoor unit has 4 modes:

1. Automatic mode In this mode, the unit works in cooling or in heating mode.

2. Cooling mode In this mode, the warm air in the room is cooled down to the desired temperature.

3. Dehumidification mode In this mode the room is mainly dehumidified and the adjusted temperature is maintained.

4. Heating mode In this mode, the warm air in the room is warmed to the desired temperature.

5. Air circulation mode In this mode, the air in the room is circulated with no change in temperature.

⑤ "FAN SPEED" key

Press this key to set the desired fan speed. 4 speeds are available: Automatic, high, medium and low fan speed.

⑥ "Follow me" function key

With this key, the sensing of the room temperature is moved from the interior unit to the remote control.

The temperature measured on the remote control is then transmitted to the interior unit in certain intervals.

⑦ Key "SLEEP"

Pressing this key will automatically increase or decrease the target temperature by 1 °C every hour in cooling and heating mode respectively.

⑧ Key „SWING“

This key directly activates the oscillating function of the fins for better air distribution in the room.

⑨ "TIMER ON" key

This key serves to program the automatic shut-off time in 0.5 h intervals within the following 24 hours.

⑩"TIMER OFF" key

This key serves to program the automatic shut-off time in 0.5 h intervals within the following 24 hours.

⑪ "RESET" key

This key resets the remote control to its factory default configuration.

⑫ "TURBO"key

The TURBO function activates the maximum fan speed and the compressor.

⑬ "Lock" key

This key can be used to lock the keys on the remote control. This allows unintentional adjustment to be prevented.

Remote control display

Indicator arrows will be displayed according to the settings.

Display on indoor unit

Automatic operation Cooling mode Dehumidifying mode Heating mode SET TEMPERATURE(C²) AUTO COOL DRY HEAT FAN HIGH MED LOW Fan speed TEMP Temperature display

Key functions

A symbol is shown on the display to indicate that the settings are being transferred.

Remote control on/off

22

The remote control's on/off function is shown at the upper right of the remote control by a "wind symbol".

RESET key

8.8 h 5 TIMER ON OFF

The remote control can be reset by pressing the RESET key (recessed key).

ON/OFF key

22

Your air-conditioner is activated and deactivated by pressing the ON / OFF key. The programmed settings and adjustment values before the unit was turned off will appear in the display.

22 ON/OFF ON/OFF

▲/▼ Keys

22

Using the key, the target temperature can be adjusted up or down by 1^ C. The temperature range lies between 17^ C and 30^ C

Cooling mode

graph LR
    A["22"] --> B["20"]
    B --> C["▲"]

Automatic mode

graph LR
    A["22"] --> B["20"]
    B --> C["22"]

MODE key

20

Use the MODE key to select between individual operating modes. A total of 5 modes are available:

1. Automatic cooling or heating operation
2. Cooling primarily summer mode
3. Dehumidifying operating mode for summer or winter
4. Heating primarily winter mode
5. Circulation air circulation only

graph LR
    A["Automatic Cooling Dehumidifying Heating"] --> B["20"]
    B --> C["22"]
    C --> D["22"]
    D --> E["MODE MODE"]
    E --> F["22"]
    F --> G["Air circulation"]

AUTOMATIC MODE

20°

In automatic mode, the controller autonomously selects between heating, circulation or cooling mode based on the room temperature Tr and the selected target value Ts. The target value can be adjusted between 17°C and 30°C by means of the ▲/▼ keys. The fan speed is selected automatically.

22 MODE 20 AUTOMATIC

Operational sequence:

If Tr is less than 1K as Ts, then operating mode "Heating" is selected.

If Tr is greater than 2K as Ts, then operating mode "Cooling" is selected.

If Tr is between Ts -1K as Ts +2K, then operating mode "Circulation" is selected.

If after the compressor is shut down and not required for more than 15 mins. within an operating mode, then, in the event that the room temperature deviates, the corresponding mode heating, cooling or circulation will be selected again.

Cooling MODE

In cooling mode, the air in the room is cooled down to the adjusted nominal temperature. The desired room temperature is set with the ▲/▼ keys in 1 °C increments. If the room temperature is 0.5 °C above the selected nominal temperature, then the interior unit starts to cool down the air in the room. If the temperature falls to approx. 1 °C below the set room temperature, the controller will switch off the cooling function. To protect the compressor, the controller only turns cooling on again after a waiting period of 3 minutes.

MODE

COOLING

OPERATION

Dehumidification MODE

It is recommended that the target temperature be set to 24^ C in dehumidifying mode. Due to the low temperature of the refrigerant, the dew point of the air at the condenser is undercut. The excess moisture in the air is condensed by the vaporiser, the room is dehumidified.

MODE

DEHUMIDIFICATION MODE

HEATING Mode

In the heating mode, you can heat the room in spring or fall. The selected room temperature is set using the ▲/▼ keys in 1 °C increments. If the room temperature is 1 °C below the selected target temperature, the indoor unit starts to heat the air in the room. If the set room temperature is exceeded by approx. 1 °C, the controller will switch off the heater function. To protect the compressor, the controller will wait 3 minutes before switching on the heating mode again.

MODE

HEATING

OPERATION

©

REMKO MXD

SLEEP key

22

A programming function is activated using this key, which increases the target temperature in cooling mode by 1^ C after one hour and by 2^ C after 2 hours. In heating mode, the target temperature is decreased by 1^ C after one hour by 2^ C after 2 hours. The unit switches off automatically after 8 hours.

TIMER Key

22 TIMER ON OFF

The activation and switch-off time can be programmed with this key. The timer is activated and the time display is switched off by pressing the Timer on or Timer off key. The timer display on the indoor unit illuminates. The desired activation or deactivation time is set by pressing the Timer On or Timer Off keys. When the programmed time has been reached, the device automatically switches on or off. If the indoor unit is automatically switched on, the mode, temperature and fan speed for the last setting are activated. Deleting the preset on and off time early is carried out by pressing the ON/OFF key. The timer display on the interior unit turns off.

TIMER ON Key

22 TIMER ON

graph LR
    A["22s"] -->|Timer On| B["0.0h"]
    B -->|Timer On| C["0.5h"]
    C -->|3 sec.| D["22s"]

TIMER OFF Key

22 TIMER OFF

graph LR
    A["22"] -->|Timer Off| B["0.0 h TIMER OFF"]
    B -->|Timer Off| C["0.5 h TIMER OFF"]
    C -->|3 sec.| D["22"]

Shut-down

Temporary shut-down

1. Allow the indoor unit to run for 2 to 3 hours in air circulation mode or in cooling mode at the maximum temperature setting in order to remove any residual moisture from the unit.
2. Shut down the system using the remote control.
3. Switch off the voltage supply to the unit.
4. Check the unit for visible signs of damage and clean it as described in the chapter "Care and maintenance".

Permanent shut-down

Ensure that equipment and components are disposed of in accordance with the applicable regulations, e.g. through authorised disposal and recycling specialists or at collection points.

REMKO GmbH & Co. KG or your contractual partner will be pleased to provide a list of certified firms near you.

Care and maintenance

Regular care and observation of some basic points will ensure trouble-free operation and a long service life.

CAUTION

Prior to performing any work, ensure the equipment is isolated from the voltage supply and secured to prevent accidental switch-on!

NOTE

Statutory regulations require an annual leak test for the refrigerant circuit in relation to the refrigerant medium fill level. Inspection and documentation is to be carried out by specialist technicians.

Care

■ Ensure the unit is protected against dirt, mould and other deposits.
Clean the unit using a damp cloth. Do not use any caustic, abrasive or solvent-based cleaning products. Do not use a jet of water.
- Clean the fins on the unit prior to long shutdown periods.

Maintenance

We recommend a maintenance contract with annual maintenance interval with an appropriate specialist company.

TIP

This ensures the operational reliability of your system!

Cleaning the cover of the indoor unit

1. Disconnect the supply voltage to the equipment.
2. Open and fold down the air inlet guard on the cover. The filter is held in place by the flaps screwed in at the side of the guard (Page 16, Fig. 1).
3. Clean the guard and cover using a soft, damp cloth.
4. Switch the supply voltage back on.

Type of taskChecks/Maintenance/Inspections	Commissioning	Monthly	Half-yearly	Yearly
General	●			●
Measure voltage and current	●			●
Check function of compressor/fans	●			●
Dirt on condenser/vaporiser	●	●
Check refrigerant fill quantity	●		●
Check condensation drain	●		●
Test insulation	●			●
Check moving parts	●			●
Sealing test for refrigerant circuit	●			● 1)

1) See note

Air filter for indoor unit

Clean the air filter at intervals of no more than two weeks. Reduce this interval if the air is especially dirty.

Cleaning the filter

1. Disconnect the supply voltage to the equipment.

2. Open and fold down the air inlet guard on the cover. The filter is held in place by the flaps screwed in at the side of the guard (Fig. 1).

3. Tilt the filter to lift it out (Fig. 1).

4. Clean the filter using a normal vacuum cleaner (Fig. 2). To do so, turn the dirty side upward.

5. Dirt can also be removed by carefully cleaning with lukewarm water and mild cleaning agents. To do so, turn the dirty side downward (Fig. 3).

6. When using water, allow the filter dry out properly in air before replacing it in the unit.

7. Carefully insert the filter. Make sure it is seated correctly.

8. Close the cover as described above but in reverse order.

9. Switch the supply voltage back on.

10. Switch the unit on again.

Cleaning the condensation pump

The indoor unit includes a built-in condensation pump, for pumping the condensation to a drain at a higher level.

The pump is more or less maintenance free. The condensation pipes should be checked for dirt at regular intervals. Clean them as required.

If an external pump is also used, observe the maintenance and care instructions given in the separate operating manual.

1 Pull out the filter

3D rendering of a square electronic component with internal grid structure (no text or symbols)

2 Cleaning using a vacuum cleaner

Close-up of a brush applying paint to a grid-patterned surface (no text or symbols visible)

3 Cleaning with lukewarm water

3D illustration of a pipe fitting onto a grid-patterned surface (no text or symbols)

Troubleshooting and customer service

The equipment and components are manufactured using state-of-the-art production methods and tested several times to verify their correct function. If malfunctions should occur, please check the functions as detailed in the list below. For installations with an indoor unit and outdoor unit, refer to the chapter "Troubleshooting and customer service" in both manuals. Please inform your dealer if the unit is still not working correctly after all the functional checks have been performed!

Malfunctions

Fault Possible cause Checks Remedy
The unit does not start or switches itself off off.	Power outage, undervoltage, defective mains fuse / main switch in off position	Are all other electrical installations functioning correctly?	Check voltage if necessary wait until turned on again.
	Damaged mains cable	Are all other electrical installations functioning correctly?	Repair by a specialist
	Wait time after switching on is too short	Have approx. 5 minutes elapsed since the restart?	Schedule longer waiting periods
	Temperature outside operating range.	Are the fans in the indoor unit and outdoor component working correctly?	Take into account the temperature range for the indoor unit and outdoor component
	Electrical surges caused by thunderstorms	Have there been lightning strikes in the area recently?	Switch off the mains breaker and switch it back on. Have it checked by a specialist
	Fault in external condensation pump	Did the pump shut down due to a fault?	Check and if necessary clean the pump
The unit does not respond to the remote control	Transmission distance too far / receiver affected by interference	Does the indoor unit beep when pressing a button?	Reduce the distance to less than 6 m or change position
	Defective remote control	Is the unit running in manual mode?	Replace the remote control
	Receiver or transmitter unit exposed to excessive solar radiation	Does it function correctly in the shade?	Place the receiver & transmitter unit in the shade
	Electromagnetic fields are interfering with transmission	Does it function when switching off possible sources of interference?	Signal is not transmitted when interference sources are operational
	Button in remote control jammed / two buttons pressed at same time	Does the "Send" symbol appear on the display?	Release the button / press only one button
	Batteries in remote control are flat	Have new batteries been inserted? Is the display incomplete?	Insert new batteries
The unit is running with reduced or without cooling / heating output	Filter is unclean / air inlet / outlet blocked by foreign objects	Have the filters been cleaned? Clean the filters
	Windows and doors open. Heating cooling loads increased	Have there been any structural / usage-related changes?	Close windows and doors / install additional units
	Neither cooling nor heating mode has been set	Does the cooling symbol appear on the display?	Correct the settings for the unit
	Fins on outdoor component blocked by foreign objects	Is the fan on the outdoor component running? Are the fins unobstructed?	Check the fan or winter controller, reduce the air resistance
	Leaking refrigerant circuit	Are there signs of frost on the fins of the indoor unit?	Repair by specialist
	Outdoor component iced up	Check outdoor component. Has the cassette sensor on the outdoor component been correctly positioned?	De-ice and fit the sensor at the point where the most ice forms
Condensation discharge on unit	Drainage pipe on collection container clogged / damaged	Can the condensation drain off without any obstruction?	Clean the drainage pipe and collection container
	Faulty external condensation pump or float	Is the collection tray full of water and the pump not running?	Call out a specialist to replace the pump
	Condensation has not drained away and has collected in the condensation line	Is there a steady fall on the condensation pipe? Check there is no blockage in the pipe.	Ensure there is a fall when laying the condensation pipe and clean the pipe.
	Condensation does not drain off	Are the condensation lines un-blocked and laid on a slope? Are the condensation pump and float switch functioning correctly?	The condensation line must have a fall. If necessary, clean the pipe. A faulty condensation pump and float switch should be replaced.
	Float is stuck or jammed due to excessive dirt.	Are the LEDs on the receiver unit of the indoor unit flashing?	Should be cleaned by specialist firm

Fault indication by flashing code

LED Operation	LED Timer	LED Defrost	LED Alarm	OU dis-play	Cause Required action
flashes - Sensor air circulation faulty / tripped						Check resistance
		flashes - Sensor on vaporiser faulty / tripped Check resistance
	flashes E7				Communication error between PCBs OU & IU	Check electrical connection leads
flashes flashes E0 EEPROM error Check EEPROM
flashes On - Inverter module shutdown
			flashes -		Condensation pump float switch faulty/tripped	Contact specialist dealer
flashes On E4 Outdoor temp sensor on OU tripped						Check resistance and temperature on sensor
flashes On On	E5 Surge voltage on outdoor unit				Check power supply
flashes		On		P0	Excess temperature in compressor	Allow compressor to cool
flashes		On	On	-	Mode conflict	Switch system off
flashes		flashes	flashes	P3	OU power consumption too high	Check power consumption

Installation instructions for qualified personnel

Important notes prior to installation

For installation of the entire system, observe the operating instructions of the indoor unit and the outdoor unit.

Transport the unit in its original packaging as close as possible to the installation location. This avoids transportation damage.

Check the contents of the packaging for completeness and check the unit for visible transport damage. Immediately notify any deficiencies to the contractual partner and forwarding agent.

Lift the unit at the corners and not by the refrigerant or condensation connections.

The refrigerant pipes (injection and suction pipe), valves and connections to make them tight against vapour diffusion. If necessary, also insulate the condensation line.

■ Select an installation location which allows air to freely flow through the inlet and outlet (see section "Minimum clearances")

Do not install the unit in the immediate vicinity of devices with intensive thermal radiation. Installation near sources of thermal radiation reduces the output of the unit.

- Install the refrigerant pipes from the indoor unit to the outdoor unit.

Seal off open refrigerant lines with suitable caps or adhesive strips to avoid the infiltration of moisture and never kink or compress the refrigerant pipes.
Only use the union nuts for the refrigerant pipes included in the delivery, and remove them shortly before connecting the refrigerant pipes.
■ Establish all electrical connections in accordance with the relevant DIN and VDE standards.
■ Always ensure electrical cables are properly connected to the terminals, otherwise there is a risk of fire.
■ Service openings should be provided in the suspended ceiling to allow maintenance access to the control box.

Installation material

The indoor unit is fastened using a wall brace and 4 bolts (provided by the customer).

In order to complete the installation, use the supplied installation material. Appropriate dowels, trapezoidal sheet metal supports, steel profiles, fixing clips for refrigerant and condensation pipes (as well as laying ducts) and connection fittings for condensation pipes must also be provided.

Minimum clearances

Observe the minimum clearances to allow access for maintenance, repair work and for optimum air distribution.

Minimum clearances

1000 1000 1000 1000 All dimensions are given in mm

Selection of the installation location

The indoor unit is designed for horizontal mounting in suspended ceilings with Euroraster dimensions. It can also be installed in other types of suspended ceilings with different dimensions.

Take into account the installation height of the equipment.

Installation

NOTE

Installation may only be performed by authorised specialists.

Unit installation

The unit is mounted on four thread-ed rods with the cover face down. Take into account the ceiling grid and any other installations.

1. Use the dimensions of the ceiling cassette to mark the fixing points for the threaded rods on structural parts approved to support the static load, and above the suspended ceiling.

2. Fit the indoor unit onto the threaded rods and use the lower nuts to level the unit (Figure 5).

3. Ensure a clearance of 35 mm from the ceiling. Connect the refrigerant pipes, electrical cables and condensation pipe to the indoor unit as described below.
4. Check that the unit is level.
5. The final task is to tighten the counternuts and attach the cover.

5 Hooking in the unit

Structural component

Unit attachment

MXD 200-520 280 615

Connecting the refrigerant lines

The refrigerant lines on the MXD 200-520 should be connected by the customer to the centre of the long side.

It may be necessary to fit a reducing or extending adapter to the indoor units. These fittings are included with the indoor unit as an accessory kit. Once installed, the connections should be sealed to prevent vapour diffusion.

CAUTION

The units are factory filled with dry nitrogen to check for leaks. The pressurised nitrogen is released when the union nuts are loosened.

Condensate drain

If the temperature falls below the dew point, condensation will form on the cooling fins during cooling mode.

A collection tray together with a condensation pump and float switch are fitted as standard below the cooling fins. Should the float switch trip a protective shutdown due to inadequate removal of the condensation, the pump will switch on immediately and run on for approx. three minutes.

The condensation pipe should have a fall of min. 2 %. This is the responsibility of the customer. If necessary, fit vapour diffusion proof insulation.

If the level of the condensation pipe on the unit is above that of the outlet, route the pipe vertically upwards (max. see P. 21) and then with a fall to the drain.
Lead the condensation line freely to the run-off line. If the condensation runs directly into a sewer pipe, fit a trap to prevent any unpleasant odours.
When operating the unit at outdoor temperatures below 4 °C, ensure the condensation pipe is laid to protect it against frost. If necessary, fit supplementary pipe heating.
Once the pipe has been laid, check the condensation drains off and permanently seal it.

Condensation connection - Wrong!
Riser pipe too far away

Pure electrical circuit lines without any symbols

No fall

Illustration of a cable with a red prohibition symbol (no text or symbols present)

Condensation pipe too large/small

Cannot freely drain away

The unit's scope of delivery includes a five metre long, four-core control line for connecting the indoor unit to the outdoor unit. The control line to the outdoor unit contains a data cable which makes communication between the indoor unit and the outdoor unit possible. This is used for controlling cooling and heating output and for forwarding fault indications to the indoor unit. If the length is insufficient, you can extend these control lines on the indoor unit.

1. Connect the control line that has been pre-prepared on-site to the terminals (see electrical connection diagram P. 22).

2. Connect the on-site pre-prepared control line with the supplied control cable in a professional manner.

3. Insert the control line plug into the corresponding socket on the outdoor unit.

4. Re-assemble the unit.

Condensation connection - Correct!

min. 2% fall

16-20 mm

A

We recommend to install a main / repair switch on the building near the indoor unit.

The terminal blocks for making the connections are located at the rear of the unit. When the unit is installed, measurements can be made from the front by removing the cover.

6 Connecting the unit

Cover

MXD 200-520 IT

A 500 mm

If an optional condensation pump is used in conjunction with the unit, it may be necessary to install an additional relay with a higher contact rating after the switch-off contact on the pump to switch off the compressor.

Control cable from the outdoor unit

Electrical connection

A protected mains supply cable is to be connected to the outdoor unit and 4-core control line is to be connected to the indoor unit respectively.

! CAUTION

All electrical installation work is to be performed by specialist companies. Disconnect the voltage supply when connecting the electrical terminals.

Make the connection as follows:

1. Open the air intake grill.
2. Unfasten the covers on the right side (Figure 6).
3. Loosen the control line on the terminal block and remove the control cable.

Terminal strip Strain relief Control cable

Electrical connection diagram and choice of unit

Connecting MVT 600 DC / MVT 900 DC MVT 950 DC / MVT 1050 DC

Outdoor componentIndoainable

	L	Exterior conductor	L	Exterior conductor	L1
	N	Neutral conductor	N	Neutral conductor	N
	S	Data cable	S
	PE		PE	Earth conductor	PE

Choice of unit
DIP-switch 1 (SW1)

DIP-switch 2 (SW2)
DIP-switch 1 (SW1) DIP-switch 2 (SW2)

Choice of temperature Choice of unit Unit

MXD 200
MXD 260
MXD 350
MXD 520

Electrical circuit diagram

MXD 200 bis 520

Legend:

DPB Display board

FM Evaporator fan

M2 Condensate pump

WL Floating switch

M3 Swing motor

MCB Main control board

T2 Probe evaporator

PP Power plug

T1 Probe recirculating air

TR Transformer

Colour code:

BK black

BR brown

BU blue

GR green

RT red

WT white

YE yellow

YE/GR yellow/green

graph TD
    A["MCB"] --> B["M2"]
    A --> C["M3"]
    B --> D["CX13"]
    B --> E["CX10"]
    B --> F["CX6"]
    B --> G["CX11"]
    B --> H["CX3"]
    B --> I["CX4"]
    C --> J["CX14"]
    C --> K["CX7"]
    L["DBP"] --> M["SWL"]
    L --> N["SW2"]
    O["WT"] --> P["CP"]
    Q["WL"] --> R["WP"]
    S["IN5"] --> T["DC"]
    U["YD/CR"] --> V["AC"]
    W["ME"] --> X["HR"]
    Y["YE"] --> Z["S"]
    AA["Connecting to the outdoor unit"] --> AB["DC"]
    AC["T2 T1"] --> AD["SWL/SW2"]
    AE["BR WT"] --> AF["SWL/SW2"]

Commissioning

NOTE

Commissioning should only be performed by specially trained personnel and documented after the certificate has been issued.

Observe the manuals for the indoor unit and outdoor unit when commissioning the entire system.

Functional test for cooling mode.

NOTE

Check the DIP switch settings on the PCB, as illustrated on Page 22.

If necessary, set the DIP switches to the appropriate indoor unit type.

1. Switch the supply voltage on.

2. Use the remote control to turn on the unit and select the cooling mode, maximum fan speed and lowest nominal temperature.

3. Measure and record all the required values in the commissioning report and check the safety functions.

4. Check the control system for the unit using the functions described in the chapter "Operation". Timer, temperature setting, fan speeds and changing to air circulation or dehumidifying mode.

5. Check the correct function of the condensation line by pouring distilled water into the condensation tray.

A bottle with a spout is recommended for pouring the water into the condensation tray.

Functional test for heating mode.

1. Switch the supply voltage on.

2. Use the remote control to switch on the unit and select the heating mode, maximum fan speed and highest nominal temperature.

3. Measure and record all the required values in the commissioning report and check the safety functions.

4. Measure the air intake temperature of the ceiling mounted cassette and the room temperature approx. 1.5 m above the floor. In the event of deviation, correct any temperature difference by means of the DIP switch SW1 (s.S22).

5. Check the control system for the unit using the functions described in the chapter "Operation".

Timer, temperature setting, fan speeds.

Final tasks

■ Reassemble all disassembled parts.

- Familiarise the operator with the system.

NOTE

Check that the stop valves and valve caps are tight after carrying out any work on the refrigerant circuit. Use appropriate sealant products as necessary.

Unit dimensions

MXD 200-520 IT

650 650

400 580 620

580 255 28

REMKO MXD

Notes

Exploded view MXD 200 to MXD 520

Exploded view diagram of a device with numbered parts, including a 14-pin mobile phone and internal components like an LCD unit.

We reserve the right to modify the dimensions and structural design as part of the ongoing technical-development process.

Spare parts list

No.	Designation MXD 200 MXD 260 MXD 350 MXD 520
	From Series 770W5008 771W5014 772W5010 778W5000
2 Air filter 1111031 1111031 1111031 1111031
3 Cover 1111032 1111032 1111032 1111032
4 Fin motor 1111033 1111033 1111033 1111033
5 Condensation tray 1111034 1111034 1111034 1111034
6 Outlet fins, set of 4 1111035 1111035 1111035 1111035
7 Vaporiser 1111036 1111036 1111049 1111050
8 Condensation pump, cpl. 1111037 1111037 1111037 1111037
9 Fan wheel 1111038 1111038 1111038 1111038
10 Vaporiser fan motor		1111039 1111039 1111039 1111039
11 Control board		1111040 1111040 1111040 1111040
12 Transformer		1111041 1111041 1111041 1111041
13 Condenser, vaporiser fan		1111042 1111042 1111048 1111051
14 IR remote control		1111052 1111052 1111052 1111052
Spare parts (not illustrated)
	Condensation float switch	1111044 1111044 1111044 1111044
	Display board	1111045 1111045 1111045 1111045
	Air circulation sensor	1111046 1111046 1111046 1111046
	Vaporiser sensor	1111047 1111047 1111047 1111047

When ordering spare parts, please state the computerised part no., device number and device type (see identification plate)!

Technical data

Series MXD 200 MXD 260 MXD 350 MXD 520
Operating mode Ceiling cassette for combined cooling/heating
Nominal cooling output1)	kW 2,05 2,61 3,53 5,2 1
Nominal heating output2) kW 2,41 2,86 3,8 5,94
Energy efficiency class, cooling1) A A B A
Energy efficiency class, heating2) B B B A
Energy efficiency ratio EER1)		3,18 3,21 3,18 3,22
Coefficient of performance COP2)		3,41 3,42 3,41 3,64
Power consumption, annual, (500h) K / H		1290 / 1410	1120 / 1255	1290 / 1410	856 / 890
Operating range (room volume), approx.	m3	60	80	110	160
Room-temperature adjustment range	°C	+17 to +30
Operating range	°C	+17 to +32
Refrigerant		R 410A4)
Operating pressure max. / per cooling circuit	kPa	4200 / 4200
Air flow volume per speed setting	m3/h	300 / 330 / 400	410/460/500	420/520/680	560/650/700
Sound pressure level per speed setting3)	dB(A)	30/ 33 / 35	32/34/36	33/35/38	38/40/42
Power supply	V / Hz	230 / 1~ / 50
Protection class	IP	X 0
Nom. electrical power consumption, cooling1)	kW 0,04 0,04 0,05 0,08
Nom. electrical power consumption, heating2)	kW 0,04 0,04 0,04 0,08
Nom. electrical current consumption, cooling1)	A	0,17 0,17 0,19 0,4
Nom. electrical power consumption, heating2)	A	0,17 0,17 0,19 0,4
Refrigerant connection - injection line	Inches(mm)	1/4	1/4	1/4	1/4
Coolant connection - suction line	Inches(mm)	3/8	3/8	1/2	1/2
Condensate drain	mm	25	25	25	25
Dimensions - Height	mm	255	255	255	255
Width	mm	580 580 580 580
Depth	mm	580 580 580 580
Weight	kg	21,0	21,0	21,0	21,0
Serial number		770...	771...	772..	778
Computerised part no.		1623250	1623255	1623260	1623265

1) Air intake temp. TK 27°C / FK 19°C, outdoor temp. TK 35°C / FK 24°C, max. air volume, 5m pipe length in combination with MVT 900 / 950 DC
2) Air intake temperature TK 20°C outdoor temperature TK 7°C, FK 6°C, max. air volume, 5m pipe length in combination with MVT 900 / 950 DC
3) Distance 1 m free field
4) Contains greenhouse gas according to Kyoto protocol

EC – Declaration of Conformity

in accordance with the Machinery Directive, Annex II 1A

Original Declaration of Conformity

CE

We hereby declare that the devices described in the following section conform to the requirements of the specified applicable EC directives due to their design and type in the version as marketed by us.

Name of Manufacturer: REMKO GmbH & Co. KG

Name of Authorised Agent: REMKO GmbH & Co. KG

Equipment (machinery) - Implementation: Multi-inverter ceiling cassette

Series / Model: REMKO MXD 200, MXD 260, MXD 350, MXD 520

Series / Class Number: 770..., 771..., 772..., 778...

Applicable regulations:

MA DIR. 2006/42/EC Machinery Directive

LV DIR. 2006/95/EC Low-Voltage Directive

EMC DIR. 2004/108 EEC Electromagnetic Compatibility Directive

EnCLB DIR. 92/75/EEC Energy Consumption Labelling Directive

EC 97/23/EC Pressure Equipment Directive

Applicable Standards:

EN 292 - 1; EN 292 - 2; EN 294;

EN 14511 T1-4;

DIN 45635 - 1;

EN 378-1-4;

EN 55014 - 1; EN 55014 - 2; EN 55104

EN 60204 - 1; EN 60335 - 1; EN 60335 - 2 - 40;

EN 61000 - 3 - 2; EN 61000 - 3 - 3;

Lage, 22 January 2010 REMKO GmbH & Co. KG

N. Cunhous

Signature, Product Manager

REMKO INTERNATIONAL

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Consultation

Thanks to intensive training, our consultants are always completely up-to-date in terms of technical knowledge. This has given us the reputation of being more than just an excellent, reliable supplier:

REMKO, a partner helping you find solutions to your problems.

Sales

REMKO offers not just a well established sales network both nationally and internationally, but also has exceptionally highly-qualified sales specialists.

REMKO field staff are more than just sales representatives: above all, they must act as advisers to our customers on air conditioning and heating technology.

Customer Service

Our equipment operates precisely and reliably. However, in the event of a fault, REMKO customer service is quickly at the scene. Our comprehensive network of experienced dealers always guarantees quick and reliable service.

REMKO GmbH & Co. KG

Air conditioning and heating technology

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