REMKO RWT Series Operating And Installation Instructions

Wall chests for cooling and heating

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Operating and

installation instructions

REMKO RWT series

Wall chests for cooling and heating

RWT 355 DC, RWT 525 DC

0337-2023-03 Edition 1, en_GB

Read the instructions prior to performing any task!

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Page 1 Operating and installation instructions REMKO RWT series Wall chests for cooling and heating RWT 355 DC, RWT 525 DC 0337-2023-03 Edition 1, en_GB Read the instructions prior to performing any task!
Page 2 Read these operating instructions carefully before commis- sioning / using this device! These instructions are an integral part of the system and must always be kept near or on the device. Subject to modifications; No liability accepted for errors or mis- Refrigerant prints! Translation of the original...
Page 3: Table Of Contents
Table of contents Safety and usage instructions......................5 1.1 General safety notes........................5 1.2 Identification of notes........................5 1.3 Personnel qualifications........................5 1.4 Dangers of failure to observe the safety notes................5 1.5 Safety-conscious working....................... 6 1.6 Safety instructions for the operator....................6 1.7 Safety notes for installation, maintenance and inspection .............
Page 4 REMKO RWT series Shutdown............................. 47 Troubleshooting and customer service.................... 48 Care and maintenance........................51 Exploded view and spare parts lists....................53 14.1 Exploded view - Indoor unit......................53 14.2 Spare parts list - Indoor unit......................54 14.3 Exploded view - Outdoor unit RWT 355 DC................55 14.4 Spare parts list - Outdoor unit RWT 355 DC................
Page 5: Safety And Usage Instructions
Safety and usage instructions DANGER! This combination of symbol and signal word 1.1 General safety notes warns of a situation in which there is immediate danger, which if not avoided may be fatal or Carefully read the operating manual before com- cause serious injury.
Page 6: Safety-Conscious Working
REMKO RWT series In particular, failure to observe the safety notes All housing parts and unit openings, e.g. air may pose the following risks: inlets and outlets, must be kept clear. The units must be inspected by a service tech- The failure of important unit functions.
Page 7: Unauthorised Modification And Changes
"certificate of warranty" to The setup, connection and operation of the REMKO GmbH & Co. KG at the time when the units and its components must be undertaken units are purchased and commissioned.
Page 8: Environmental Protection And Recycling
REMKO RWT series 1.12 Environmental protection and recycling Disposal of packaging All products are packed for transport in environ- mentally friendly materials. Make a valuable contri- bution to reducing waste and sustaining raw mate- rials. Only dispose of packaging at approved collection points.
Page 9: Technical Data
Technical data 2.1 Unit data Series RWT 355 DC RWT 525 DC Inverter wall chest room air conditioner Operating mode combination for cooling and heating Nominal cooling output (0.8-4.2) (2.6-5.6) Energy efficiency ratio SEER Rated power consumption, electrical cooling Rated elec. curr. consump., cooling Power consumption, annual, Q Energy efficiency ratio, cooling 3.8 (0.4-4.7)
Page 10 REMKO RWT series Associated indoor unit / series RWT 355 DC IT RWT 525 DC IT Power supply V/Ph/Hz 230/1~/50 Application area (room volume), approx. Adjustment range, room temperature °C +17 to +30 Relative air humidity adjustment range °C +35 to +85 Operating range °C/r.H.%...
Page 11 Associated outdoor unit / series RWT 355 DC AT RWT 525 DC AT Power supply V/Ph/Hz 230/1~/50 Operating range, cooling °C +5 to +50 Operating range, heating °C +5 to +24 Air flow rate, max. 2200 2100 Enclosure class IP24 Sound power level max.
Page 12: Unit Dimensions, Outdoor Unit
REMKO RWT series 2.2 Unit dimensions, outdoor unit Fig. 1: Dimensions RWT 355-525 DC AT (all measurements in mm) Measurements (mm) RWT 355 DC RWT 525 DC We reserve the right to modify the dimensions and design as part of the ongoing technical development process.
Page 13: Design And Function
Design and function Unit description The RWT 355-525 DC room air conditioners have an RWT...AT outdoor unit as well as an RWT...IT indoor unit. In cooling mode, the outdoor unit serves to output the heat extracted by the indoor unit from the room being cooled.
Page 14: Operation
REMKO RWT series Operation 4.1 General notes 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 with the remote control, then it can also be man- ually operated.
Page 15: Indicators On Indoor Unit
Furthermore, the SmartControl Touch SC-1 (Smart-Com) central regulation can be connected. (See “Electrical wiring” chapter). Operation via the REMKO Smart web portal or REMKO Smart Control app The units can be controlled with a connected SC-1 (Smart-Com) or a plugged-in WIFI stick via the REMKO Smart web portal or via the REMKO Smart-Control app.
Page 16: Manual Air Distribution
REMKO RWT series 4.3 Manual air distribution Setting the air distribution The vertical air control slats can be moved to the left and right by hand (see Fig. 10). An automatic swing function is also available for horizontal air distribution (see Chapter “Keys on the remote con- trol”).
Page 17: Keys On The Remote Control
4.4 Keys on the remote control "Fan speed" key Switches between the different fan speeds in the following order: AUTO Þ20% Þ40% Þ60% Þ80% Þ100% Þ... The fan speed can also be adjusted in 1% steps with the "Arrow up" and "Arrow down" keys. Pressing and holding the key activates the silence function.
Page 18 REMKO RWT series "eco gear" key Additional functions Switches between the available energy-saving Breathe Away functions in the following order: Self clean eco Þ gear 75 % Þ gear 50 % Þ OFF Þ eco ... Bio Clean eco: Sleep the setpoint is raised to 24 °C and the fan speed is...
Page 19 Key lock Key functions Appears when the remote control key lock is "Auto" mode active. Make sure that the indoor unit is connected to the power supply, and is switched on. The operating mode indicator on the display of the Temperature indicators indoor unit begins to flash.
Page 20 REMKO RWT series "Cooling", "Heating" and "Recirculation" mode "Dehumidification" mode Press the "ON/OFF" key [1] to switch on the Press the "ON/OFF" key [1] to switch on the air conditioning unit. air conditioning unit. Press the "MODE" key [2] to select Press the "MODE"...
Page 21 "Timer" mode Press the "TIMER" key to set the "switch-on time" and the "switch-off time" for the unit. When the switch-on and switch-off times are being set, this can be done at 30 minute inter- Setting the "switch-on time" vals for the first 10 hours, and at hourly inter- The air conditioning unit has two different timer vals thereafter.
Page 22 REMKO RWT series Examples of TIMER function settings Combined TIMER (setting "TIMER ON" and "TIMER OFF" at the same time) "TIMER ON" (Auto on mode) "TIMER OFF ð "TIMER ON" Example: (On ð Stop ð Start) You want the air conditioning unit to switch on 2 hours from the time it was programmed.
Page 23 Sleep Frost protection function The sleep function can be used to save energy The frost protection function keeps the room air temperature above 8 °C to prevent damage to the during night operation. When the sleep function is building structure. activated, the temperature setpoint is regularly reduced (cooling mode) or increased (heating Press the "ON/OFF"...
Page 24 REMKO RWT series Key lock The frost protection function keeps the room air temperature above 8°C to prevent damage to the building structure. Press the “Turbo” key [1] and the “Humidity” key [2] at the same time for 5 seconds to activate and deactivate the key lock.
Page 25: Installation Instructions For Qualified Personnel
Installation instructions for qualified personnel 5.1 Important notes prior to instal- 5.2 Wall openings lation A wall opening of at least 70mm diameter and 10mm incline from the inside to the outside Transport the unit in its original packaging as must be created.
Page 26: Selection Of Installation Location
REMKO RWT series 5.4 Selection of installation Wind location If the unit is being installed in windy areas, ensure that the warm outlet air is discharged in the pre- Indoor unit vailing wind direction. If this is not the possible, it...
Page 27: Minimum Clearances
Installation inside buildings Install an additional fan with a rated flow com- parative to that of the outdoor unit being Ensure that heat can dissipate adequately installed in the room and which can compen- when placing the outdoor unit in cellars, lofts, sate any additional pressure loss in ventilation adjoining rooms or halls (Fig.
Page 28: Oil Return Measures
REMKO RWT series 5.6 Oil return measures If the outdoor unit is installed at a higher level than the indoor unit, suitable oil return measures must be taken. Usually, an oil pump bend is installed for every 7 metres of height difference.
Page 29: Connection Variants
5.7 Connection variants The following connection variants can be used for the refrigerant, condensate and control lines. Fig. 31: Connection variants A: Outflow, right C: Bottom outflow B: Outflow, left D: Rear outflow...
Page 30: Dimensions Of Rear Of Unit
REMKO RWT series 5.8 Dimensions of rear of unit Fig. 32: Rear of unit base dimensions (all measurements in mm) A: Wall-mounted bracket C: Wall opening B: Spacer...
Page 31: Installation
Installation 6.2 Connection of refrigerant piping 6.1 Unit installation The refrigerant piping connection provided by the customer takes place on one corner of the unit, inside the suspended ceiling. Once installed, the NOTICE! connections should be insulated to make them vapour diffusion proof.
Page 32 REMKO RWT series The following instructions describe the installation of the cooling cycle and the assembly of the indoor unit and the outdoor unit: The required pipe diameters are given in the table "Technical data". Install the indoor unit and connect the refrig- erant piping as described in the operating manual for the indoor unit.
Page 33: Leak Testing
6.3 Leak testing Once all the connections have been established, the pressure gauge station is attached to the corre- sponding Schrader valve connection as follows: blue = large valve = suction pressure Once the connection has been made successfully, the leak test is carried out with dry nitrogen. Leak testing involves spraying a leak detection spray onto the connections.
Page 34: Adding Refrigerant
REMKO RWT series 6.4 Adding refrigerant Condensate drainage connection and safe The units contain a basic quantity of refrigerant. In addition, an additional amount of refrigerant must drainage be added for refrigerant piping lengths exceeding 5 metres per circuit. Refer to the following chart:...
Page 35 Safe drainage in the event of leakages Local regulations or environmental laws, for example the German Water Resource Act (WHG), can require suitable precautions to protect against uncontrolled drainage in case of leakage to provide for safe disposal of escaping air conditioning fluid or hazardous media.
Page 36: Electrical Wiring
REMKO RWT series Electrical wiring 8.1 General connection 8.2 Connecting the indoor unit and safety instructions Make the connection as follows: A protected power supply cable is to be connected Open the air inlet grille (see Fig. 39). to the outdoor unit and four-core control line with Loosen the screw of the PCB housing (see minimum cross-section 1.5 mm...
Page 37 Connection of an optional wired remote control (KFB-3) A wired remote control (KFB-3) can be connected optionally to the units. Make the connection as follows: Open the air inlet grille (see Fig. 39). Loosen the screw of the PCB housing (see Fig.
Page 38 PCB: REMKO Smart-Control Touch SC-1 CN46 CN42 CN41 CN45 REMKO Smart-Control Touch SC-1 Smart- REMKO Redundancy Module KFB-R Customer-provided superordinate regulation Fig. 44: Connections of the multifunction PCB External “on/off” contact The external “on/off” contact enables external ena- bling or disabling of the indoor unit from a remote location.
Page 39 Rotary switch addressing Connection of an optional central regulation (SC-1, SC-1 Smart-Com) The address of the indoor unit is determined using A central regulation (SC-1) can be connected the rotary switch in combination with the DIP optionally to the units. switches (see chapter “Addressing”).
Page 40 REMKO RWT series Addressing the indoor unit (SC-1, SC-1 Smart- The rotary switch ENC3 is then used to specify the Com) unit address more precisely. The unit address results from the combination of the two switches as Indoor units that are connected to a central regula-...
Page 41 Connection of an optional redundancy module Installation of an optional WIFI stick (KFB-R) The units are equipped with an interface for a WIFI A redundancy module (KFB-R) can be connected stick as standard, which is located in the PCB optionally to the units. housing on the right-hand side of the unit.
Page 42: Outdoor Unit Connection
REMKO RWT series 8.3 Outdoor unit connection Fix the line in the strain relief and re- assemble the unit. Proceed as follows to connect the line: Remove the unit cover. Remove the side panel at the connection. Choose the cable cross-section in accord- ance with the relevant specifications.
Page 43 Connection of optional condensate pump KP 6/KP 8 1(L) 2(N) L(A) N(A) S(A) PE 230 V/1~/50 Hz Fig. 52: Electrical wiring diagram Outdoor unit Condensate pump supply Indoor unit Condensate pump fault contact KP6/KP8 condensate pump BK: black Power supply cable WH: white...
Page 44: Electrical Drawings
REMKO RWT series 8.5 Electrical drawings Indoor units CN81 CN32 CN12 CN42 CN23 CN19 CN15 ge (ws) CN18 ge/gn L N S 13 14 15 16 Fig. 53: Electrical drawings for indoor units Control board Temperature probe, indoor air Display circuit board...
Page 45 Outdoor units 1(L) 2(N) S CN 1A CN 60 CN 17 CN 9 CN 32 CN 15 CN 30 CN 29 CN 25 CN 28 2/3/4/5 CN 7 CN 21 CN 31 Fig. 54: Electrical drawings for outdoor units A: Control board Capacitor Compressor AC fan...
Page 46: Before Commissioning
REMKO RWT series Before commissioning Commissioning After leak testing has been successfully com- pleted, connect the vacuum pump via the pressure NOTICE! gauge station to the valve connections on the out- door unit (see chapter "Leak testing") and create a Commissioning should only be performed by vacuum.
Page 47: Shutdown
Check the correct function and set- REMKO GmbH & Co. KG or your contractual tings of all regulation, control and safety partner will be pleased to provide a list of certified devices.
Page 48: Troubleshooting And Customer Service
REMKO RWT series Troubleshooting and customer service The unit and components are manufactured using state-of-the-art production methods and tested several times to verify that they function correctly. However, if malfunctions should occur, please check the functions as detailed in the list below. For systems with an indoor unit and outdoor unit, refer to the chapter "Trouble- shooting and customer service"...
Page 49 Malfunction Possible causes Checks Remedial measures Filter is dirty/air inlet/ Have the filters been Clean the filters outlet opening is blocked cleaned? by debris Windows and doors Have structural/usage Close windows and open. Heating/cooling modifications been doors/install additional load has increased made? units Neither cooling nor...
Page 50 REMKO RWT series Status/fault display on the indoor unit Indicator Error description Defrosting active (status) Self clean function active (status) No enabling (external On / Off) (status) EH 00 EEPROM error, indoor unit EH 0A EL 01 Communication error between indoor unit and outdoor unit...
Page 51: Care And Maintenance
Care and maintenance Clean the fins on the indoor unit and outdoor unit prior to long shutdown periods. Regular care and observation of some basic points will ensure trouble-free operation and a long Maintenance service life. It is recommended that you take out a mainte- nance contract with a yearly service from an appropriate specialist firm.
Page 52 REMKO RWT series Cleaning the housing Observe the care and maintenance instructions in the separate operating manual Disconnect the power supply to the unit. Open the air inlet grill on the front side and fold it forwards or backwards. Clean the grill and cover with a soft, damp cloth.
Page 53: Exploded View And Spare Parts Lists
Exploded view and spare parts lists 14.1 Exploded view - Indoor unit Fig. 58: Exploded view - Indoor unit We reserve the right to modify the dimensions and design as part of the ongoing technical development process.
Page 54: Spare Parts List - Indoor Unit
REMKO RWT series 14.2 Spare parts list - Indoor unit IMPORTANT! To ensure the correct delivery of spare parts, please always the device type with the corresponding serial number (see type plate) No. Designation No. Designation Front panel Fan motor, bottom...
Page 55: Exploded View - Outdoor Unit Rwt 355 Dc
14.3 Exploded view - Outdoor unit RWT 355 DC Fig. 59: Exploded view of the unit RWT 355 DC AT We reserve the right to modify the dimensions and design as part of the ongoing technical development process.
Page 56: Spare Parts List - Outdoor Unit Rwt 355 Dc
REMKO RWT series 14.4 Spare parts list - Outdoor unit RWT 355 DC IMPORTANT! To ensure the correct delivery of spare parts, please always the device type with the corresponding serial number (see type plate) No. Designation Cover panel Protection grid, front wall...
Page 57: Exploded View - Outdoor Unit Rwt 525 Dc
14.5 Exploded view - Outdoor unit RWT 525 DC Fig. 60: Exploded view of the unit RWT 525 DC AT We reserve the right to modify the dimensions and design as part of the ongoing technical development process.
Page 58: Spare Parts List - Outdoor Unit Rwt 525 Dc
REMKO RWT series 14.6 Spare parts list - Outdoor unit RWT 525 DC IMPORTANT! To ensure the correct delivery of spare parts, please always the device type with the corresponding serial number (see type plate) No. Designation Cover panel Protection grid, front wall...
Page 59: Index
Index Minimum clearances ..... 27 Air distribution, manual ....16 Oil return measures .
Page 60 REMKO QUALITY WITH SYSTEMS Air-Conditioning | Heating | New Energies Telephone +49 (0) 5232 606-0 REMKO GmbH & Co. KG Hotline within Germany +49 (0) 5232 606-0 Klima- und Wärmetechnik Telefax +49 (0) 5232 606-260 Im Seelenkamp 12 E-mail info@remko.de...

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Rwt 355 dc Rwt 525 dc