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The ATY 261-351 DC room air 

conditioning units have a REMKO 

ATY...AT outdoor component as 

well as an ATY...IT indoor unit.

When in cooling mode, 

the outdoor component serves 

to release the heat extracted 

by the indoor unit from the 

room being cooled. In heating 

operation, the heat absorbed 

by the outdoor component 

can be discharged through 

the indoor unit into the room 

being heated. In both operating 

modes, the performance of the 

compressor precisely adjusts itself 

to the demand, thereby regulating 

the nominal temperature with 

minimal temperature variations. 

This "inverter-technology" 

results in energy savings over 

conventional split systems and 

also reduces noise emissions 

to a particularly low level. The 

outdoor component can be 

installed outdoors or indoors. 

The latter requires the fulfilment 

of certain conditions. The indoor 

unit is designed to be mounted 

high up on indoor walls. Operation 

takes place using an infrared 

remote control.

The outdoor component consists 

of a refrigerant circuit with 

compressor, fin condenser, 

condenser fan, reverse flow valve 

and throttle element. The outdoor 

component is controlled via the 

controller of the indoor unit.

The indoor unit consists of a fin 

vaporiser, vaporiser fan, regulation 

system and condensation pan. 
Floor consoles, wall consoles, 

refrigerant pipes and condensation 

pumps are available as accessories.

Equipment description

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.
No warranty can be assumed 
for later claims.

Transport and 
Packaging 

Refrigerant circuit diagram for the indoor unit

Vaporiser fan

Connection to suction pipe

Connection to injection line

Vaporiser

The connection between the indoor unit and the outdoor component is 
made by way of the refrigerant lines.

Outdoor component

System configuration

Injection line

Indoor unit

Indoor area

Outdoor area

Stop valve

Condenser fan

Suction line

Condensation line

Condensation line

Electr. power supply line

Control line

Schematic of outdoor refrigerant circuit

M

M

Condenser fan

Reverse flow valve

Condenser

Filter dryer Flow regulator 

Capillary tube

Connection valve

Injection line

Connection valve

Suction line

Compressor

5

Summary of Contents for ATY 261 DC

Page 1: ...Edition GB V08 REMKO ATY ATY 261 DC ATY 351 DC Inverter wall room air conditioner in split design Operation Technology Spare parts ...

Page 2: ......

Page 3: ...aging 5 Equipment description 5 Operation 6 14 Shutdown 15 Care and maintenance 15 16 Troubleshooting and customer service 17 18 Control and resistance 19 Installation instructions for qualified personnel 20 23 Installation 23 25 Monitoring for leaks 25 Condensate drain 26 Electrical connection 26 27 Electrical connection diagram 27 Electrical circuit diagram 28 Before commissioning 28 Add refrige...

Page 4: ...lied 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 voltage supply is to be adapted to the requirements of the equipment The operational safety of equipment and components is only assured if they are used as intended and fully assembled Safety devices...

Page 5: ...ve and throttle element The outdoor component is controlled via the controller of the indoor unit The indoor unit consists of a fin vaporiser vaporiser fan regulation system and condensation pan Floor consoles wall consoles refrigerant pipes and condensation pumps are available as accessories Equipment description The equipment is shipped in sturdy transport packaging Immediately check the equipme...

Page 6: ...ace discharged batteries immediately with a new set in order to avoid risk of leakage It is recommended that the batteries are removed if the equipment is shut down for longer periods NOTE Display on indoor unit The display illuminates according to the settings In operation the display lights up the selected mode and the nominal temperature are shown Manual operation The indoor unit can also be st...

Page 7: ...p mode is activated and in cooling operation the nominal temperature increases automatically by 1 C within an hour in heating operation the nominal temperature is lowered by 1 C within an hour After the second hour the temperature is increased lowered by 2 C After 6 hours the function is switched off SWING button This button directly activates the oscillating function of the fins for better air di...

Page 8: ...ase it This adjustment is only possible in coolingand heating mode In automatic mode the fixed temperature of 24 C is preset The current setting is shown next to the temperature display In dehumidification mode no temperature adjustment can be made Cooling heating mode MODE Button Use the MODE button to select between the individual operating modes 5 modes are available 1 Automatic automatic selec...

Page 9: ...ed room temperature is set with the buttons in 1 C increments If the room temperature is 1 C above the selected nominal temperature the indoor unit starts to cool the air in the room The inverter controller checks the difference between the adjusted nominal temperature and the actual room temperature If there is a large difference the cooling output is very high If the difference is smaller a lowe...

Page 10: ...he controller turns the heater function off To protect the compressor the controller will not switch the heating on again until it has waited for 3 minutes Heating MODE 6 Min 3 Min 6 Min 30 sec 30 sec Nominal temperature 5 C Nominal temperature 2 C Fan operation IT Fan operation AT Compressor operation AT Actual temperature Stop heating operation Heating mode Start heating mode Functional diagram ...

Page 11: ...w point of the air at the condenser is undercut The excess moisture in the air is condensed on the condenser the room is dehumidified The fan has four speeds Neither the ion generator nor turbo mode can be selected in this mode Dehumidification MODE DEHUMIFICATION MODE MODE 30 sec Nominal temperature Nominal temperature 2 C Fan operation IT Fan operation AT Compressor operation AT Actual temperatu...

Page 12: ...off timer is activated The turn on or turn off time blinks The timer display on the indoor unit illuminates The desired turn on or turn off time is set by pressing the buttons HR and MIN After completed adjustment the timer symbol will continue to blink for approximately 15 seconds When the programmed time has been reached the unit automatically switches on or off If the unit is automatically swit...

Page 13: ... programming During operation all settings can be seen on the display Out of operation only the timer settings are visible The controller turns the unit on after programming During operation all settings can be seen on the display Out of operation only the timer settings are visible PROGRAMMING TIMER OFF Timer on HR MIN 30 sec Timer off HR MIN 30 sec Unit On Unit Off Example The controller turns o...

Page 14: ...ing In addition atmospheric particles and dust particles in the air are bound naturally cleaning the air Any dust can settle on smooth surfaced due to the ionization and can be removed manually Weekly cleaning of the housing and the filter should be observed when using the ionization feature The function is available in all operating modes Turbo function With this button the air volume flow in coo...

Page 15: ...tdoor component are protected against dirt mould and other deposits Clean the equipment using a damp cloth Do not use any caustic abrasive or solvent based cleaning products Do not use a jet of water Before an extended shut down period clean the fins on the outdoor unit and cover the outdoor unit with plastic to avoid infiltration of dirt into the unit Cleaning the housing of the indoor unit 1 Dis...

Page 16: ... the indoor unit via the remote control to air circulation the front cover of the air inlet must be open Figure 2 2 Open the lower display cover on the front side of the unit by pressing both latches and carefully fold the cover downward and remove it from the bracket figure 3 3 Push the clips on the filter up and pull it out on the clips figure 4 4 Clean the filter with a standard vacuum cleaner ...

Page 17: ...iver Electromagnetic fields disrupt the transmission Does it function after removing potential fault sources Signal is not transmitted when interference sources are operational Button of remote control stuck dual button control Does the Send symbol appear on the display Release the button press only one button Batteries of remote control are discharged Have new batteries been inserted Is the displ...

Page 18: ...ctions refrigerant pressure ambient conditions ER12 flashes O O PFC error Check cable connections pipe connections shut off valves compressor ER13 flashes Inverter control board communication error Check cable connections pipe connections shut off valves compressor ER14 flashes Inverter board safety shut off Check cable connections pipe connections shut off valves compressor ER15 flashes O Indoor ...

Page 19: ... condition control via IT 6 C no change to frequency 4 C decrease in frequency 1Hz 3sec 1 C Switch off compressor IT surface tempera ture Heating regulation 51 C Normal operating condition control via IT 51 C 55 C no change to frequency 55 C 65 C decrease in frequency 1Hz 3sec 65 C Switch off compressor Power consumption Cooling heating regulation 6 1 A no change to frequency 6 2 6 7A decrease in ...

Page 20: ...nly use the union nuts for the refrigerant pipes included in the delivery and remove them only shortly before connecting the refrigerant lines Make electrical connections in accordance with the effective DIN and VDE standards Always fasten electric cables properly to the electrical terminals Otherwise a fire could result The assembly and installation of the units and components may only be carried...

Page 21: ...ain The unit should be at least 10 cm off the ground when mounted on the roof or ground A pedestal is available as an accessory Sun The evaporator fins condenser of the outdoor unit are the heat discharge components in cooling operation Exposure to direct sunlight further increases the temperature of the fins and so reduces the heat released by the finned heat exchanger The outdoor component shoul...

Page 22: ...d opposite each other figure 7 Minimum clearances Observe the minimum clearances to allow access for maintenance and repair work and facilitate optimum air distribution ATY 261 DC AT ATY 351 DC AT A 100 mm 100 mm B 700 mm 700 mm C 400 mm 400 mm D 100 mm 100 mm E 300 mm 300 mm Comply with any regulations and conditions affecting the structure of the building If necessary fit acoustic installation M...

Page 23: ...tion line to the indoor unit as described below 8 Check that the unit is level 9 Re assemble the unit Installation of the indoor unit The wall bracket for the unit must be attached with suitable screws and anchors Installation Installation may only be performed by authorised specialists NOTE Oil return measures If the outdoor unit is installed at a higher level than the indoor unit we recommend th...

Page 24: ...ucture borne sound is not transferred to parts of the building Use vibration dampers to reduce the effects of structure borne sound 7 Remove the factory fitted protective caps and the union nuts from the blocking valve connections and use them for further installation 8 Before flanging the refrigerant lines ensure that the union nut is on the pipe 9 Prepare the refrigerant lines as shown below fig...

Page 25: ...indoor unit and the length of the refrigerant lines The process will always take at least 60 minutes Once any foreign gases and moisture have been completely extracted from the system the valves on the pressure gauge station will be closed and the valves on the outdoor component will be opened as described in the chapter on Commissioning Before the leakage test the pipe connections must be checked...

Page 26: ...nstalled as voltage supply to the indoor unit and a control cable to the outdoor component with appropriate safeguards We recommend installing a main repair switch on the building near to the indoor unit Power is supplied to the indoor unit the outdoor unit is supplied via a control line from the indoor unit The terminal blocks for making the connections are located behind the cover on the outdoor...

Page 27: ...bles through the ferrite core supplied in the delivery figure 17 18 4 Feed the cable through the edge protection ring of the fixed connection plate 5 Connect the cable as shown on the electrical connection diagram 6 Anchor the cable in the strain relief and re assemble the unit Mains cable Check all plugged and clamped terminals to verify they are seated correctly and make a permanent contact Tigh...

Page 28: ... with leak detection spray or soapy water for leaks and for inadvertent mix up of suction and injection line Perform this check when the unit is not running Check the refrigerant lines and insulation for damage Check the electrical connection between the indoor unit and the outdoor unit for correct polarity Check that all fastenings mountings etc are firm and at the correct level Wear protective c...

Page 29: ...efrigerant and rework the defective 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 nominal temperature 7 Measure and record all the required values in the commissioning report and check the safety functions 8 Che...

Page 30: ...reserve the right to modify the dimensions and constructional design as part of the ongoing technical development process ATY 261 DC IT ATY 351 DC IT 265 245 532 148 567 567 All values in mm All values in mm 720 623 495 470 396 45 25 47 REMKO ATY 30 ...

Page 31: ... IT Operating range C r F 16 to 32 80 16 to 32 80 Adjustment range Cooling C 18 to 30 18 to 30 Adjustment range Heating C 16 to 28 16 to 28 Air flow volume per speed setting m h 360 390 420 380 410 440 Protection class IP X0 X0 Sound pressure level per speed setting 3 dB A 33 36 40 35 37 41 Dimensions height mm 567 567 Width mm 567 567 Depth mm 148 148 Weight kg 12 0 12 0 Corresponding outdoor com...

Page 32: ...t fins set 1107406 1107406 8 Condensation tray 1107439 1107439 9 Fin vaporiser 1107409 1107486 10 Fan wheel vaporiser 1107410 1107410 11 Fan motor vaporiser 1107471 1107471 12 Control board 1107472 1107473 13 Ion generator 1107415 1107415 14 Housing angle set right left 1107416 1107416 15 Mounting clip cover set 1107417 1107417 16 Antifreeze sensor air circulation sensor 1107418 1107418 17 IR remo...

Page 33: ...475 6 Compressor cpl 1107476 1107477 7 Stop valve suction line 1107434 1107435 8 Stop valve injection line 1107436 1107436 9 Side section left 1107438 1107438 10 Reverse flow valve 1107437 1107437 11 Reverse flow valve coil 1107478 1107478 12 Control board 1107479 1107480 13 IPM inverter power drive 1107481 1107482 14 Hot gas condenser air intake sensor set 1107483 1107483 15 Compressor sensor 110...

Page 34: ...REMKO ATY 34 ...

Page 35: ...Notes 35 ...

Page 36: ...so has exceptionally highly qualified sales specialists REMKO field staff are more than just sales representatives they must primarily act as advisers in air conditioning and heating technology for our customers SFlbCustomer 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 d...

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