REMKO ML ML 262 DC, ML 352 DC, ML 522 DC Inverter wall mounted units in split design and frost protection function Operation · Technology · Spare parts Edition GB – W11
Contents Safety notes 4 Warranty 4 Environmental protection and recycling 4 Intended use 4 Transport and packaging 5 Equipment description 5 Operation Decommissioning 6-12 12 Care and maintenance 12-13 Troubleshooting and customer service 14-15 Installation instructions for qualified personnel 15-18 Installation 18-19 Monitoring for leaks 20 Condensate drain 20 Electrical connection Electrical connection diagram Electrical circuit diagram 20-21 21 22-23 Before commissioning 24
REMKO ML...DC - ARCTIC Safety notes Carefully read this manual before putting commissioning the equipment. 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 datasheet near the unit. ■ The unit may only be set up and installed by qualified personnel.
Transport and Packaging The equipment is shipped in 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. No warranty can be assumed for later claims. Refrigerant circuit diagram for the outdoor component Condenser fan Reverse flow valve Compressor M Connection Manometer The ML 262-522DC room air conditioning units have a REMKO ML...
REMKO ML...DC - ARCTIC 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 Display on indoor unit The indoor units can commissioned manually. After the air inlet screen has been opened, the inner recessed button can be pressed and automatic mode can be activated.
Buttons on the remote control 2. Cooling mode In this mode, the warm room air is cooled 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 heated up to the desired temperature. 5. Circulation mode In this mode, the air in the room is circulated with no change in temperature. "FAN" button Press this button to set the desired fan speed.
REMKO ML...DC - ARCTIC Remote control display Indicator arrows will be displayed according to the settings. Display on indoor unit Automatic operation Cooling mode Dehumidifying mode Fan speed Heating mode Temperature display Button functions A symbol is shown on the display to indicate that the settings are being transferred. Remote control on/off The remote control's on/off function is shown at the upper right of the remote control by a "wind symbol".
▲/▼ Buttons Using the button, the target temperature can be adjusted up or down by 1°C.
REMKO ML...DC - ARCTIC DEHUMIDIFICATION MODE It is recommended that the target temperature be set to 24 ° 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. The fan speed is permanently set to the lowest setting in order to achieve a maximum level of dehumidification. The compressor switches on and off in intervals between 17°C and 24°C.
SLEEP Button A programming function is activated using this button, 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 Button The activation and switch-off time can be programmed with this button.
REMKO ML...DC - ARCTIC Manual air distribution There are individually adjustable fins for adjusting the horizontal air distribution on the air discharge side. Manual air distribution ATTENTION Moving, internal parts, e.g. fans, have the potential to cause injury during operation! Only make adjustments after swing operation has been switched off. Decommissioning Temporary Decommissioning 1.
3. Clean the guard and cover using a soft, damp cloth. 4. Switch the supply voltage back on. • • • • • • • • • • General Measure voltage and current Check function of compressor/fans Check fan function Dirt on condenser/vaporiser Check refrigerant fill quantity Air filter for indoor unit Clean the air filter at intervals of no more than 2 weeks. Reduce this interval in case of heavily soiled air. Cleaning the filter of the indoor unit 1. Disconnect the supply voltage to the equipment. 2.
REMKO ML...DC - ARCTIC 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.
Problem display by blinker code Display Cause Required action E0 EEPROM error Contact specialty company E1 Communication error between outdoor component and indoor unit Disconnect from mains for 2 min, check wiring E2 Wiring fault L/N/Pe/S Check wiring, replace IT circuit board E3 Check wiring, check motor voltage E6 Vaporiser fan speed too low Outdoor temp.
REMKO ML...DC - ARCTIC Wall openings ■ A wall opening of at least 70 mm diameter and 10 mm slope from the inside to the outside must be made for each indoor unit ■ We recommend that the inside of the opening is padded or lined, e.g. using a PVC pipe, to prevent the lines being damaged. ■ After installation, the wall opening should be closed off with a suitable sealant.
Installation inside buildings ■ Ensure that heat can dissipate adequately when placing the outdoor component in cellars, attics, adjoining rooms or halls (figure 4). ■ Install an additional fan with a rated flow comparative to that of the outdoor component being installed in the room.
REMKO ML...DC - ARCTIC Installation Oil return measures NOTE If the outdoor component is installed at a higher level than the indoor unit, suitable oil return measures must be taken. This is normally accomplished by creating a bend in the oil line, installed at every 2.5 metres of rise. Oil return measures Outdoor component The indoor unit is attached by means of a wall bracket, under consideration of air discharge side located in the lower part. 1.
5. Verify that the shape of the flange is correct(figure 8). 6. First connect and hand-tighten the refrigerant connections to ensure they are correctly seated. 7. Now fully tighten the fittings using 2 suitably sized openended spanners. Use one spanner to counter the force when tightening the fitting (figure 9). 8. Use only diffusion-tight insulation hoses designed for this temperature range. 9. Lay the refrigerant lines from the indoor unit to the outdoor component.
REMKO ML...DC - ARCTIC Monitoring for leaks Condensate connection Once all the connections have been established, the pressure gauge station is attached as follows to the Schrader valve (if fitted): red = small valve = injection pressure blue = large valve = suction pressure Due to undercutting of the dew point at the vaporiser, condensation forms during coolingand in the condenser duringheating. Once connected, perform a leak test using dry nitrogen.
Connecting the indoor unit Connecting the outdoor component Make the connection as follows: Proceed as follows to connect the cable: 1. Open the air intake grill. 2. Loosen the cover to the terminal strip on the right side. (figure 11). 3. Connect the unit to the control cable from the outdoor component. See electrical connection diagram. 1. Remove the plastic panel at the connector. 2. Select the cable cross-section according to the relevant standards. 3.
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Electrical circuit diagram ML 262-522 DC IT I ON Y/G M1 2 3 N 3 CN9 M2 5 CN7 S1 CN5 S 4 CN11 S2 RY1 CN10 CN13 2 2 L N CN8 CN6 CN2 L N S CN12 7 CN4 CN17 Y/G JX1 CN1 3 CN3 2 2 P_1 Display CN14 3 Manual On/Off 4 S to outdoor component T1 M1 = Swing motor M2 = Fan motor T1 = Transformer S1 = Air circulation sensor S2 = Vaporiser sensor V1 = Board display F1 = Manual On/Off 23
REMKO ML...DC - ARCTIC Before Commissioning After the tightness check has been successfully completed, connect the vacuum pump via the pressure gauge station to the valve connections on the outdoor component (see chapter "Tightness check") and create a vacuum. Perform the following checks prior to putting the unit into operation for the first time and after any work on the refrigeration circuit.
4. If no leaks are found, open the stop valves by turning them anti-clockwise as far as they will turn using a hexagon spanner. If leaks are found, repair the faulty connection. It is imperative that the vacuum creation and drying steps are repeated! 5. Switch on the mains switch or circuit breaker. 6. Use the remote control to switch on the unit and select the cooling mode, maximum fan speed and lowest target temperature.
REMKO ML...DC - ARCTIC Exploded view ML 262 DC IT to ML 522 DC IT 11 10 9 7 1 6 4 8 5 12 2 3 Spare parts list No. Designation From Serial number We reserve the right to modify the dimensions and constructional design as part of the ongoing technical development process. ML 262 DC IT ML 352 DC IT ML 522 DC IT 802W6001... 808W6001... 809W6001...
Exploded view ML 262 DC AT to ML 522 DC AT 13 11 12 6 5 2 4 9 3 8 1 10 7 Spare parts list No. Designation From Serial number ML 262 DC AT ML 352 DC AT ML 522 DC AT 802W9001... 808W9001... 809W9001... 1 Front panel 1111190 1111230 1111231 2 Fan blade, condenser 1111193 1111232 1111233 3 Fan motor, condenser 1111195 1111234 1111235 4 Condenser 1111197 1111236 1111237 5 Cover panel 1111200 1111238 1111239 6 Side panel 1111203 1111240 1111241 7 Compressor, cpl.
REMKO ML...DC - ARCTIC Performance data ML 262 DC Leistungskurve Heizen Heating Cooling 2.68 Heizleistung 2.62 2.56 2.50 2.44 Nominal heat output 2.74 3,8 3,6 3,4 3,2 3,0 2,8 2.6 2.32 2.4 0.84 0,84 0.83 0.82 0.81 0.80 0.78 25 27 29 31 33 35 37 39 41 Elec. power consumption 2.38 Leistungsaufnahme Nominal cooling output Leistungsaufnahme Elec. power consumption Kühlleistung 4,0 0.82 0.80 0.78 0.76 0.74 0.
ML 522Performance DC data ML 522 DC Heating Nominal heat output 5.3 5.2 5.1 Heizleistung Kühlleis Nominaltung cooling output Cooling 5.0 4.9 4.8 6.00 5.90 5,80 5.70 5.60 5.50 5.40 1.72 1.70 Elec. power consumption 4.6 1.68 Leistungsaufnahme me Elec. power consumption saufnah Leistung 4.7 6.10 1.64 1.60 1.56 1.52 1.48 25 27 29 31 33 35 37 39 41 Außentemperatur Outdoor temperature 43 1.60 1.50 1.40 1.30 1.20 1.
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EC – Declaration of Conformity in accordance with the Machinery Directive, Annex II 1A Original Declaration of Conformity We hereby declate 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 Klima- und Wärmetechnik Im Seelenkamp 12 D - 32791 Lage Name of Authorised Agent: REMKO GmbH & Co.
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