REMKO RVT Series Operating And Installation Instructions
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REMKO RVT Series Operating And Installation Instructions

Wall units - cooling and heating
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Operating and
installation instructions
REMKO RVT series
Wall units - cooling and heating
RVT 265 DC, RVT 355 DC
0265-2020-05 Edition 1, en_GB
Read the instructions prior to performing any task!

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  • Page 1 Operating and installation instructions REMKO RVT series Wall units - cooling and heating RVT 265 DC, RVT 355 DC 0265-2020-05 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

    2.1 Unit data............................9 2.2 Unit dimensions..........................11 2.3 Performance data.......................... 12 Design and function..........................16 3.1 Characteristics of REMKO inverter air conditioner with split design..........16 3.2 Unit description..........................18 Operation............................. 19 4.1 General notes..........................19 4.2 Indicators on indoor unit........................ 19 4.3 Keys on the remote control......................
  • Page 4 REMKO RVT series 8.4 Electrical wiring diagram....................... 41 8.5 Electrical drawings........................43 8.6 Connection of a superordinate controller ..................45 Before commissioning........................47 Commissioning........................... 47 Troubleshooting, fault analysis and customer service..............49 11.1 Troubleshooting and customer service..................49 11.2 Indoor unit fault analysis......................51 11.3 Resistances of the temperature probes..................

  • 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 RVT 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 RVT 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 RVT 265 DC RVT 355 DC Inverter wall-mounted room air conditioner com- Operating mode bination for cooling and heating 2.63 (0.99-4.15) 3.52 (1.03-4.81) Nominal cooling output Energy efficiency ratio SEER 0.483 0.75 Rated power consumption, electrical cooling Rated elec.
  • Page 10 REMKO RVT series Data specific to outdoor unit (AT) RVT 265 DC RVT 355 DC Power supply V/Ph/Hz 230/1~/50 Operating range, cooling °C -25 to +50 Operating range, heating °C -30 to +30 Air flow rate, max. 2000 Enclosure class Sound power level max.

  • Page 11: Unit Dimensions

    2.2 Unit dimensions Outdoor units Measurements (mm) RVT 265-355 DC AT Indoor units Measurements (mm) RVT 265-355 DC We reserve the right to modify the dimensions and design as part of the ongoing technical development process.

  • Page 12: Performance Data

    REMKO RVT series 2.3 Performance data Cooling capacity RVT 265 DC Outside temperature (TK, °C) Inside Cooling capacity (A = Total, B = Sensitive, C = Power consumption) °C °C 2.71 2.11 0.37 2.59 2.07 0.40 2.48 2.03 0.43 2.85 2.18...
  • Page 13 Heating capacity RVT 265 DC Outside temperature (TK, °C) Inside Heating capacity (A = Total, B = Sensitive, C = Power consumption) °C 2.62 1.58 2.98 1.64 3.59 1.66 3.76 1.57 2.58 1.60 2.94 1.67 3.54 1.68 3.71 1.59 2.54 1.63 2.89 1.69...
  • Page 14 REMKO RVT series Cooling capacity RVT 355 DC Outside temperature (TK, °C) Inside Cooling capacity (A = Total, B = Sensitive, C = Power consumption) °C °C 3.55 2.77 0.57 3.41 2.72 0.62 3.26 2.67 0.67 3.73 2.86 0.58 3.59 2.81...
  • Page 15 Heating capacity RVT 355 DC Outside temperature (TK, °C) Inside Heating capacity (A = Total, B = Sensitive, C = Power consumption) °C 2.76 1.83 3.02 1.92 3.72 1.95 3.90 1.89 2.72 1.86 2.98 1.95 3.67 1.98 3.84 1.92 2.68 1.89 2.93 1.98...

  • Page 16: Design And Function

    Heat regulation in the fact turn itself off when heat is removed. The Remko inverter air conditioner is modulated to the same applies in the opposite direction with actual need. The electronics system has an inte- heating.
  • Page 17 Cooling mode The comfort zone in the illustration below shows which values for temperature and humidity are Because of circuit reversal, heating is also pos- considered comfortable for people. This range sible. In heating mode, the components of the should ideally be met when heating or air-condi- refrigeration circuit are used to produce warm air tioning buildings.

  • Page 18: Unit Description

    REMKO RVT series 3.2 Unit description The RVT series room air conditioners have a REMKO RVT...AT outdoor unit as well as an RVT...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 19: Operation

    Operation 4.1 General notes Alarms are indicated by a code (see chapter The indoor unit is easily operated using the Troubleshooting and customer service). 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 20: Keys On The Remote Control

    REMKO RVT series 4.3 Keys on the remote control Eco key (sleep mode) Pressing once activates ECO mode (only available in cooling mode). As well as the temperature, “eco” is now shown on the display. If the target tempera- ture is set to less than 24 °C, in ECO mode the temperature is automatically increased to 24 °C...
  • Page 21 “Intelligent eye” key Fan speed & silence mode Press the “Intelligent eye” key to activate the auto- Use this key to select the desired fan speed. matic wind direction change. The unit will then Note: In the dehumidification mode, the fan speed direct the air flow onto a person in the room.
  • Page 22 REMKO RVT series Indicators on the LCD Turbo mode Turbo mode has been activated. Battery status This symbol appears when the battery is low. ECO function This symbol appears when the ECO function is activated. Temperature indicator Displays the target temperature setting (16 °C~30 °C).
  • Page 23 "Cooling", "Heating" and "Recirculation" mode Make sure that the indoor unit is connected to the power supply, and is switched on. The illustration of the LCD with all of the sym- bols present is only intended to provide a Press the "MODE" key [1] to select clearer overview.
  • Page 24 REMKO RVT series "Dehumidification" mode "Timer" mode Make sure that the indoor unit is connected to the Press the "TIMER" key to set the "switch-on time" power supply, and is switched on. and the "switch-off time" for the unit. The operating mode indicator on the display of the Setting the “switch-on time”...
  • Page 25 Examples of TIMER function settings "TIMER ON" (Auto on mode) Example: You want the air conditioning unit to switch on 2 hours from the time it was programmed. Press the "TIMER" key. 0.0h and the "Timer ON" symbol now appear on the display. Press the “+”...
  • Page 26 REMKO RVT series Combined TIMER (setting "TIMER ON" and "TIMER ON ð "TIMER OFF" "TIMER OFF" at the same time) (Off ð Start ð Stop) "TIMER OFF ð "TIMER ON" Example: (On ð Stop ð Start) You want the air conditioning unit to switch on in...
  • Page 27 SLEEP function The sleep function saves energy while you sleep. Activate this function by holding down the “Eco” key [1] for 2 seconds. Press this key before going to sleep. In cooling mode, the unit automatically increases the set room temperature by 1 °C after 1 hour.

  • Page 28: Installation Instructions For Qualified Personnel

    REMKO RVT series 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 29: Installation, Mounting Outdoor Unit

    5.5 Installation, mounting outdoor unit Outdoor unit installation location The device may be attached only to a load- bearing structure or wall. Ensure that the out- door unit is installed only vertically. The instal- lation site should be well ventilated. To minimise noise, install floor consoles with vibration dampers and a considerable distance from acoustically-reflective walls to minimise...
  • Page 30 REMKO RVT series Assessment level in accordance with TA noise Point of emissions days in dB(A) nights in dB(A) Industrial areas Commercial areas Core areas, village areas and mixed zones General residential areas and small housing estates Exclusively residential areas Spa areas, hospitals and mental institutions Isolated noise peaks of short duration may not exceed 30 dB(A) during the day and 20 dB(A) at night.

  • Page 31: Minimum Clearances

    5.6 Minimum clearances Observe the minimum clearances to allow access for maintenance and repair work and facilitate optimum air distribution. 1: Indoor unit (IT) a: Air inlet 2: Outdoor unit (AT) b: Air outlet Measurements (mm) RVT 265-355 DC IT 1500 2000 RVT 265-355 DC AT...

  • Page 32: Oil Return Measures

    REMKO RVT series 5.8 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 33: Connection Of The Indoor Unit When The Refrigerant Piping Is Installed Under The Plaster

    5.9 Connection of the indoor unit when the refrigerant piping is installed under the plaster If the customer routes the refrigerant piping to the unit underneath the plaster, observe the following note. The principal connection options can be found in the "Connection variants for the indoor unit" and "Wall bracket"...

  • Page 34: Installation

    REMKO RVT series Fig. 26: Wall bracket alignment RVT 265-355 DC A: Correct alignment B: Incorrect alignment Installation 6.1 Installation of the indoor unit The indoor unit is attached by means of a wall bracket, taking into consideration the air outlet side located in the lower part.

  • Page 35: Connecting The Refrigerant Piping

    6.2 Connecting the refrigerant The following instructions describe the installation of the cooling cycle and the assembly of the indoor piping unit and the outdoor unit. The refrigerant piping is connected (responsibility The required pipe diameters are given in the of the customer) on the back side of the units.
  • Page 36 REMKO RVT series Label the refrigerant piping (injection and suc- tion pipes) as well as the associated electrical control lines of each interior unit with a letter. Only connect the lines to their associated con- nections. NOTICE! Always pay attention to the affiliation of the...

  • Page 37: Additional Notes On Connecting The Refrigerant Piping

    6.4 Leak testing Once all the connections have been made, the pressure gauge station is attached to the Schrader valve as follows (if fitted): red = small valve = high pressure blue = large valve = suction pressure Once the connection has been made successfully, the leak test is carried out with dry nitrogen.

  • Page 38: Adding Refrigerant

    REMKO RVT series 6.5 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 39 Safe drainage in the event of leakages For the designations of 1,3,5,8,9 and 11, please refer to the legend for Fig. 32 The REMKO oil separator OA 2.2 fulfils the fol- lowing list of requirements from regional regula- dimensioning of the strip foundation (in mm) tions and laws.

  • Page 40: Electrical Wiring

    REMKO RVT series Electrical wiring 8.1 General Information 8.2 Connecting the indoor unit A protected power supply cable is to be connected We recommend that a mains/repair switch be to the outdoor unit and a five-core control line to installed near the outdoor unit.

  • Page 41: Connecting The Outdoor Unit

    8.3 Connecting the outdoor unit Proceed as follows to connect the line: Remove the side-panel cover. Choose a cable-section according to the rele- vant specifications. Connect the lines as shown on the electrical connection diagram. Fix the line in the strain relief and re- assemble the unit.
  • Page 42 REMKO RVT series 2: Communication line Connection of optional condensate pump KP 6/KP 8 W 1(L) 2(N) W 1(L) 2(N) L N PE Fig. 37: Electrical wiring diagram Outdoor unit Condensate pump supply Indoor unit Condensate pump fault contact KP6/KP8 condensate pump...

  • Page 43: Electrical Drawings

    8.5 Electrical drawings Indoor units RVT 265-355 DC IT OPTIONAL OPTIONAL OPTIONAL 5(3 or 2) CN225 CN108 CN21 CN221 CN20 P1_1 WHITE CN224 L-OUT L-IN BLUE(BLACK) YELLOW N-IN CN10 CN32 OPTIONAL 1(L) 2(N) S CN43 CN40 CN45 CN42 CN41 CN44 CN46 E 12V/5V HA HB...
  • Page 44 REMKO RVT series Outdoor units RVT 265-355 DC AT OPTIONAL BLUE BROWN CN414 OPTIONAL BLUE CN13 CN12 BLUE CN30 OPTIONAL CN6-1 BLACK BROWN (BLACK) BLUE BLACK （YELLOW） CN10 BLACK(BLUE) 1(L) 2(N) S L N 11 12 13 Fig. 39: Electrical drawings RVT 265-355 DC AT...

  • Page 45: Connection Of A Superordinate Controller

    8.6 Connection of a superordinate controller Units of type RVT have a multifunction PCB installed in the panel of the unit which has various connecting facilities for superordinate controllers. Connecting facilities of the multifunction PCB Fig. 40: Connection terminals F1: Extended address allocation Addresses 00-15 can be allocated using rotary switch ENC1 if both F1 DIP switches are set to “OFF”.
  • Page 46 REMKO RVT series Electrical wiring for optional KFB-R redundancy controller BUS connection Output 1 Output 2 Output 3 ERR = Contact Input 1 Input 2 Input 3 OK = Contact CN46 CN45 CN46 CN45 Start/Stop Start/Stop Alarm Alarm RVT indoor unit (A)

  • Page 47: Before Commissioning

    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 48 REMKO RVT series Function test of the cooling and heating modes Remove the protective caps from the valves. Start the commissioning procedure by briefly opening the shut-off valves on the outdoor unit until the pressure gauge indicates a pressure of approx. 2 bar.

  • Page 49: Troubleshooting, Fault Analysis And Customer Service

    Troubleshooting, fault analysis and customer service 11.1 Troubleshooting and customer service The unit and components are manufactured using state-of-the-art production methods and tested several times to verify their correct function. However, if alarms should occur, please check the functions as detailed in the list below.
  • Page 50 REMKO RVT series Malfunction Possible causes Checks Remedial measures Windows and doors Have structural / usage Close windows and open. Heating / cooling modifications been doors / install additional load has increased made? units Cooling mode is not set Does the cooling symbol...

  • Page 51: Indoor Unit Fault Analysis

    Fault display on the indoor unit Display Error description EEPROM error, indoor unit Communication error between indoor unit and outdoor unit Fan speed control indoor unit disabled Room temperature probe T1 defective Temperature probe, evaporator T2 defective Overflow protection Temperature probe air inlet outdoor unit T4 defective Temperature probe, evaporator outlet T3 defective Temperature probe, heat gas line T5 defective EEPROM error, outdoor unit...
  • Page 52 REMKO RVT series Error code: Reason: The indoor unit does not receive a signal from the outdoor unit within 110 seconds. The check is performed 4 times in a row, then error E1 is displayed. Cause: Electrical connection not configured correctly...
  • Page 53 Error code: E3/F5 Reason: If the fan speed of the indoor unit/outdoor unit falls below 300 rpm, the unit switches off and the display shows error code E3 or F5 Cause: Electrical connection faulty Evaporator fan wheel defective Evaporator fan motor defective Control board faulty Switch off voltage, switch on again 2 minutes later.
  • Page 54 REMKO RVT series Procedure DC fan motor of the indoor unit (control chip is installed in the motor): Switch on the voltage to the unit. In standby mode, measure the unit between terminals 1-3 and 4-3 of the connector plug. Check the measured values against those listed in the table below. If these differ, there is a problem with the control board and it must be replaced.
  • Page 55 Error code: Reason: The evaporator probe T2 measures the actual value with the compressor start and takes this as the reference value T . If, 8 minutes after the compressor start, the value T Start Start has not dropped by 2 °C for at least 4 seconds then the system assumes that the refrig- erant is low.
  • Page 56 REMKO RVT series Error code: E4 / E5 / F1 / F2 / F3 Reason: If the test voltage of the probes is lower than 0.06 V or higher than 4.94 V then the display shows the error code of the corresponding probe.
  • Page 57 Error code: Reason: Safety shutdown due to overly high current consumption of individual unit components Cause: Faulty power supply Cooling circuit blocked Faulty control board Electrical connections faulty Compressor defective Switch the unit off and ensure correct supply Check the supply voltage. Is this correct? voltage.
  • Page 58 REMKO RVT series Error code: Reason: If the power supply to the compressor controller is faulty, the display shows the error code “P0” and the unit switches off Cause: Electrical connection faulty Faulty control board Condenser fan motor defective or blocked...
  • Page 59 Error code: Reason: Overvoltage or undervoltage protection has tripped Cause: Faulty supply voltage Refrigerant low or cooling circuit blocked Faulty control board Check the power supply. Is the supply voltage Switch the unit off and have the power supply correct? checked/corrected.
  • Page 60 REMKO RVT series Error code: P2 (with units with a thermal contact) Reason: If the test voltage of the thermal contact does not lie at 5 V, then the display shows the error message “P2” Cause: Faulty supply voltage Refrigerant low or cooling circuit blocked...
  • Page 61 Error code: Reason: Safety shutdown of inverter controller. Internal system monitoring triggered (e.g. communi- cation problem between board and compressor, the compressor speed is not OK) Cause: Faulty electrical connections Inverter regulation on board defective Condenser fan motor defective Compressor defective Control board defective Check the electrical connection between the control board and compressor.

  • Page 62: Resistances Of The Temperature Probes

    REMKO RVT series 11.3 Resistances of the Temp. Resistance Temp. Resistance temperature probes (°C) (kW) (°C) (kW) 4.39 1.21 Probe T1, T2, T3 and T4 4.21 1.17 Temp. Resistance Temp. Resistance (°C) (kW) (°C) (kW) 4.05 1.14 115.27 18.72 3.89 1.10...
  • Page 63 Temp. Resistance Temp. Resistance Temp. Resistance Temp. Resistance (°C) (kW) (°C) (kW) (°C) (kW) (°C) (kW) 0.42 0.30 82.54 18.96 0.41 0.29 78.79 18.26 0.40 0.28 75.24 17.58 0.39 0.28 71.86 16.94 0.38 0.27 68.66 16.32 0.37 0.26 65.62 15.73 0.36 0.26 62.73...
  • Page 64 REMKO RVT series Temp. Resistance Temp. Resistance (°C) (kW) (°C) (kW) 5.66 2.86 5.49 2.78 5.32 2.70 5.16 2.63 5.00 2.56 4.85 2.49 4.70 2.42 4.56 2.36 4.43 2.29 4.29 2.23 4.17 2.17 4.05 2.12 3.93 2.06 3.81 2.01 3.70 1.96...

  • Page 65: Care And Maintenance

    Care and maintenance Maintenance It is recommended that you take out a mainte- Regular care and observation of some basic points nance contract with a yearly service from an will ensure trouble-free operation and a long appropriate specialist firm. service life. DANGER! This enables you to ensure the operational reli- Prior to performing any work, ensure the equip-...
  • Page 66 REMKO RVT series Cleaning the housing Disconnect the power supply to the unit. Open and fold the air inlet grill on the front side upwards. Clean the grill and cover with a soft, damp cloth. Clean this filter using a normal vacuum Switch the power supply back on.

  • Page 67: Shutdown

    Ensure that units and components are disposed of in accordance with local 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 in your area.

  • Page 68: Exploded View And Spare Parts Lists

    REMKO RVT series Exploded view and spare parts lists 14.1 Exploded view of indoor unit RVT 265-355 DC IT Fig. 45: Exploded view of the unit RVT 265-355 DC IT We reserve the right to modify the dimensions and design as part of the ongoing technical development...

  • Page 69: Spare Parts List For The Indoor Unit Rvt 265-355 Dc It

    14.2 Spare parts list for the indoor unit RVT 265-355 DC IT IMPORTANT! To ensure the correct delivery of spare parts, please always the device type with the corresponding serial number (see type plate) No. Designation Unit trim Air filters, set Intelligent eye Housing front Evaporator...

  • Page 70: Exploded View Of The Outdoor Units Rvt 265-355 Dc At

    REMKO RVT series 14.3 Exploded view of the outdoor units RVT 265-355 DC AT Fig. 46: Exploded view of the unit RVT 265-355 DC AT We reserve the right to modify the dimensions and design as part of the ongoing technical development...

  • Page 71: Spare Parts List For Outdoor Units Rvt 265-355 Dc At

    14.4 Spare parts list for outdoor units RVT 265-355 DC AT IMPORTANT! To ensure the correct delivery of spare parts, please always the device type with the corresponding serial number (see type plate) No. Designation Air outlet grid Front wall Fan blade Fan motor Fan motor mounting plate...

  • Page 72: Index

    REMKO RVT series Index Minimum clearances ..... 31 Multifunction board, connection ... . . 45 Alarms Checks .
  • Page 74 REMKO RVT series...
  • Page 76 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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