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REMKO MVT 603 DC Operating And Installation Instructions

Multisplit air-conditioning systems for cooling and heating outdoor units
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Operating and
installation instructions
REMKO MVT series
Multisplit air-conditioning systems for cooling and heating
Outdoor units
MVT 603 DC, MVT 903 DC, MVT 1053 DC, MVT 1403 DC
0218-2023-04 Edition 2, en_GB
Read the instructions prior to performing any task!

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  • Page 1 Operating and installation instructions REMKO MVT series Multisplit air-conditioning systems for cooling and heating Outdoor units MVT 603 DC, MVT 903 DC, MVT 1053 DC, MVT 1403 DC 0218-2023-04 Edition 2, 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 Care and maintenance........................63 Shutdown............................. 64 Exploded view and spare parts lists....................65 14.1 Exploded view of the unit MVT 603 DC..................65 14.2 Spare parts list MVT 603 DC...................... 66 14.3 Exploded view of the unit MVT 903 DC..................67 14.4 Spare parts list MVT 903 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 MVT 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 MVT 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 MVT 603 MVT 903 MVT 1053 MVT 1403 Series Operating mode Inverter multisplit outdoor units for cooling and heating 10.5 12.4 Nominal cooling output (2.1-6.9) (2.9-8.5) (2.1-10.6) (2.1-14.20) Energy efficiency ratio SEER Power consumption, annual, Q Energy efficiency ratio - cooling Nominal heat capacity (2.3-7.2)
  • Page 10 REMKO MVT series MVT 603 MVT 903 MVT 1053 MVT 1403 Series Refrigerant Refrigerant, basic quantity 1.25 1.72 2.10 2.40 equivalent 0.84 1.16 1.42 1.62 Refrigerant, additional quantity >5m Max. number of indoor units Refrigerant piping, max. length per IU Refrigerant piping, max.

  • Page 11: Unit Dimensions

    2.2 Unit dimensions Fig. 1: Dimensions We reserve the right to modify the dimensions and design as part of the ongoing technical development process. MVT 603 DC MVT 903 DC MVT 1053 DC 1044 MVT 1403 DC 1044 (All measurements in mm)

  • Page 12: Performance Data

    REMKO MVT series 2.3 Performance data Cooling capacity MVT 603 DC Outside temperature (TK, °C) Inside Cooling capacity (A = Total, B = Sensitive, C = Power consumption) °C °C 8.11 6.32 1.86 7.76 6.20 2.03 7.41 6.07 2.20 8.53 6.53...
  • Page 13 Heating capacity MVT 603 DC Outside temperature (TK, °C) Inside Heating capacity (A = Total, B = Sensitive, C = Power consumption) °C 4.65 2.73 5.44 2.83 6.24 2.93 6.71 2.99 5.58 2.77 5.36 2.87 6.15 2.97 6.62 3.03 4.51 2.82...
  • Page 14 REMKO MVT series Cooling capacity MVT 903 DC Outside temperature (TK, °C) Inside Cooling capacity (A = Total, B = Sensitive, C = Power consumption) °C °C 8.42 6.57 1.93 8.06 6.45 2.11 7.70 6.31 2.28 8.87 6.78 1.95 8.48 6.66...
  • Page 15 Heating capacity MVT 903 DC Outside temperature (TK, °C) Inside Heating capacity (A = Total, B = Sensitive, C = Power consumption) °C 4.12 2.74 4.84 2.74 5.55 2.75 5.98 2.76 4.06 2.78 4.77 2.79 5.47 2.80 5.90 2.80 4.00 2.82 4.70 2.83...
  • Page 16 REMKO MVT series Cooling capacity MVT 1053 DC Outside temperature (TK, °C) Inside Cooling capacity (A = Total, B = Sensitive, C = Power consumption) °C °C 10.77 8.40 2.47 10.31 8.25 2.69 9.84 8.07 2.92 11.34 8.67 2.50 10.85 8.52...
  • Page 17 Heating capacity MVT 1053 DC Outside temperature (TK, °C) Inside Heating capacity (A = Total, B = Sensitive, C = Power consumption) °C 4.92 3.92 6.06 3.97 6.99 3.92 7.55 3.89 4.84 3.98 5.97 4.03 6.89 3.98 7.44 3.95 4.77 4.04 5.88 4.10...
  • Page 18 REMKO MVT series Cooling capacity MVT 1403 DC Outside temperature (TK, °C) Inside Cooling capacity (A = Total, B = Sensitive, C = Power consumption) °C °C 12.62 9.84 2.89 12.08 9.66 3.15 11.53 9.46 3.41 13.28 10.16 2.92 12.71 9.98...
  • Page 19 Heating capacity MVT 1403 DC Outside temperature (TK, °C) Inside Heating capacity (A = Total, B = Sensitive, C = Power consumption) °C 4.75 3.87 5.83 3.91 6.70 3.69 7.22 3.55 4.68 3.93 5.74 3.97 6.60 3.74 7.12 3.61 4.61 3.99 5.66 4.03...

  • Page 20: Design And Function

    Condenser valves and a condenser fan. The outdoor unit is Condenser fan combinable with REMKO indoor units from the Reversing valve MXW, MXD, MXT and ATY ranges in accordance Compressor with the cooling capacity (see "Combinations"...
  • Page 21 Fig. 3: System layout MVT 1403 DC Outdoor area Power supply Ba-e: Indoor area Shut-off valves 1a-e: Indoor units Suction pipes Outdoor unit Injection pipes Condensate drainage line Control lines Condenser fan The connection between the indoor unit (indoor areas Ba, Bb, Bc, Bd, Be) and the outdoor unit (connection circuits A, B, C, D, E) of the outdoor unit is established using refrigerant piping and a control line.

  • Page 22: Combinations

    D: ATY The following combinations of outdoor units can be MVT 903 DC Combinations with 1 indoor unit selected: Indoor units Combi- MVT 603 DC Combinations with 1 indoor unit nation 2.0 kW 2.6 kW 3.5 kW 5.2 kW Indoor units...
  • Page 23 MVT 903 DC (Continued) Combinations with 3 indoor units Combinations with 3 indoor units Indoor units Combi- Indoor units Combi- nation 2.0 kW 2.6 kW 3.5 kW 5.2 kW nation 2.0 kW 2.6 kW 3.5 kW 5.2 kW MVT 1053 DC Combinations with 1 indoor unit Indoor units Combi- nation...
  • Page 24 REMKO MVT series MVT 1053 DC (Continued) Combinations with 2 indoor units Combinations with 4 indoor units Indoor units Combi- Indoor units Combi- nation 2.0 kW 2.6 kW 3.5 kW 5.2 kW nation 2.0 kW 2.6 kW 3.5 kW 5.2 kW...
  • Page 25 MVT 1403 DC (Continued) Combinations with 5 indoor units Combinations with 4 indoor units Indoor units Combi- Indoor units Combi- nation 2.0 kW 2.6 kW 3.5 kW 5.2 kW nation 2.0 kW 2.6 kW 3.5 kW 5.2 kW lllll llll lllll llll llll...

  • Page 26: Operation

    REMKO MVT series Operation Installation instructions for qualified personnel The compressor in the outdoor unit is operated by means of regulating the control board in the out- 5.1 Important notes prior door unit. The chapter on "Regulation" in the to installation manual for the outdoor unit must therefore be observed.

  • Page 27: Wall Openings

    Only use the union nuts supplied with the refrigerant piping. These should only be removed shortly before connecting the refrig- erant piping. Carry out all electrical wiring in accordance with applicable DIN and VDE standards. Ensure the electrical cables are properly con- nected to the terminals.
  • Page 28 REMKO MVT series Wind If the unit is being installed in windy areas, ensure that the warm outlet air is discharged in the pre- vailing wind direction. If this is not the possible, it may be necessary to install a windbreak (to be pro- vided by the customer).

  • Page 29: Installation Materials

    5.4 Installation materials 5.6 Oil return measures The outdoor unit is attached by 4 screws and a If the outdoor unit is installed at a higher level than wall bracket to the wall or fixed by a floor bracket to the indoor unit, suitable oil return measures must the ground.

  • Page 30: Installation

    REMKO MVT series Installation Ensure that structure-borne sound is not transferred to parts of the building. Use vibra- 6.1 Connection of tion dampers to reduce the effects of struc- ture-borne sound! refrigerant piping Lay the refrigerant piping from the indoor unit The refrigerant piping is connected on the back to the outdoor unit.
  • Page 31 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 electrical lines and refrigerant piping! The con- nections of the individual circuits must not be mixed up.

  • Page 32: Leak Testing

    REMKO MVT series NOTICE! A vacuum of at least 20 mbar must be pro- duced! The time required to generate the vacuum is dependent on the final pressure pipe volume of the indoor units and the length of the refrigerant piping.

  • Page 33: Adding Refrigerant

    Condensate drainage 6.4 Adding refrigerant connection and safe The unit contains 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: Condensate drainage connection If the temperature falls below the dew point, con- Up to and incl.

  • Page 34: Electrical Wiring

    REMKO MVT series Electrical wiring 8.1 General connection and safety Proceed as follows to connect the line: instructions Remove the side panel at the connection. For the MVT devices, an electrical supply must be Choose the cable cross-section in accord- laid as a mains supply to the outdoor unit as well ance with the relevant specifications.
  • Page 35 Fig. 16: Electrical wiring of the line shown on the following as an example MVT 903 DC 1: Mains cable 2: Strain relief 3: Control line for indoor unit A 4: Control line for indoor unit C 5: Control line for indoor unit B...

  • Page 36: Electrical Wiring Diagram

    REMKO MVT series 8.3 Electrical wiring diagram MVT in combination with the indoor units ATY, MXD, MXT and MXW MVT 603 DC MVT 903 DC MVT 1053 DC MVT 1403 DC L(A) N(A) S(A) L(B) N(B) S(B) L(C) N(C) S(C)

  • Page 37: Electrical Drawings

    8.4 Electrical drawings Circuit diagram MVT 603 DC L(B) N(B) S(B) Fig. 18: Overview diagram MVT 603 DC A: Control board Crankcase heating B: Inverter board Condensate tray heating AT: Mains cable for outdoor unit 230 V / 1~ / 50 Hz...
  • Page 38 REMKO MVT series Circuit diagram MVT 903 DC Fig. 19: Overview diagram MVT 903 DC A: Control board Condensate tray heating B: Inverter board Temperature probe for condenser outlet T3 AT: Mains cable for outdoor unit 230 V / 1~ / 50 Hz...
  • Page 39 Circuit diagram MVT 1053 DC Fig. 20: Overview diagram MVT 1053 DC A: Control board Crankcase heating B: Inverter board Condensate tray heating C: Com circuit board Temperature probe for condenser outlet T3 AT: Mains cable for outdoor unit 230 V / 1~ / 50 Hz Temperature probe for condenser inlet T4 IT: Connection for indoor units 1-4 High-pressure probe...
  • Page 40 REMKO MVT series Circuit diagram MVT 1403 DC BLACK BLUE CN42 CN43 5(6) BLACK CN20 BLACK BLUE BLUE 5(6) BLUE CN21 CN33 BLUE 5(6) CN41 CN17 CN10 CN54 CN22 5(6) BLUE CN51 CN40 CN18 BLACK CN44 BLACK 5(6) CN53 CN19...

  • Page 41: 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 42 REMKO MVT series Function test of cooling operating mode NOTICE! Remove the protective caps from the valves. Start the commissioning procedure by briefly Check that the shut-off valves and valve caps opening the shut-off valves on the outdoor are tight after carrying out any work on the unit until the pressure gauge indicates a cooling cycle.
  • Page 43 If the compressor moves to an incorrect fre- quency range within 15 minutes, a safety shut- down occurs and the unit shows "E6" If there is a malfunction, the malfunction is dis- played coded. See the "Outdoor unit malfunc- tion display" table Fig.
  • Page 44 REMKO MVT series Continued Item Display Description Temp. of suction pipe for indoor unit A (T Current value. If the temperature is lower than Temp. of suction pipe for indoor unit B (T -9°C, the display shows "-9". If the temperature Temp.
  • Page 45 (3) Cooling capacity - Heating capacity OU / IU Display Temperature (°C) Cooling Heating 22.5 Display capacity capacity 25.0 (kW) (kW) 27.5 2.0-2.5 2.0-2.5 30.0 2.0-2.5 2.0-2.5 32.5 3.0-3.8 3.0-3.8 34.5 4.5-5.0 4.5-5.0 5.5-6.1 (7) Outdoor unit current consumption 5.5-6.1 6.1-7.0 Display Current consump.

  • Page 46: Troubleshooting, Fault Analysis And Customer Service

    REMKO MVT series 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 47 Operational malfunctions (continued) Malfunction Possible causes Checks Remedial measures Thermal load has Is the outdoor unit in per- Reduce the thermal load. The compressor's increased manent operating mode? If necessary, install an suction pipe and / or additional unit / insulate liquid separator components that have iced have iced up...

  • Page 48: Outdoor Unit Error Analysis

    REMKO MVT series 11.2 Outdoor unit error analysis Error E0: EEPROM error on outdoor unit Switch off, wait 2 minutes and then switch on again. Is the error still present? Replace the control board. Error E3: Communication error between inverter board and control board...
  • Page 49 Error E5: Overvoltage or undervoltage error Overvoltage/undervoltage protection has tripped. Check the power supply voltage on the outdoor unit's L and N terminals. Is Correct the mains cable this between 220 and 240 Is voltage present between terminals P and N on the inverter board? Is the measured value between 277-356 VDC (MVT 603...
  • Page 50 REMKO MVT series Error E8: Condenser fan speed control not working Switch off, wait 2 minutes and then switch on again. Is The unit operates normally. the error still present? Switch off; rotate the con- Determine the cause and denser fan manually. Does rectify the error.
  • Page 51 Error P1: High pressure fault (for larger versions) High pressure fault P1 is present. Is the electrical connection between the high pressure probe and the control board established correctly? Check whether the high pressure probe is faulty. Remove the high pressure probe's plug and measure Replace the high pressure the resistance.
  • Page 52 REMKO MVT series Error P2: Low pressure alarm Low pressure probe has tripped. Error P2 is present. Is the electrical connection between the low pressure Correct the connection. probe and the control board established correctly? Check whether the low pressure probe is faulty.
  • Page 53 Error P3: Compressor current consumption too high Safety shut-down due to increased current consump- tion on the compressor. Switch the unit off, switch it back on and measure the total current consumption. Is this within the specified range? Check the cooling cycle. Is this OK? Is the outside temperature Switch the unit off.
  • Page 54 REMKO MVT series Error P4: Temperature probe for heat gas line faulty Heat gas temperature on the compressor too high Is the heat gas temperature higher than 115°C? Check the cooling cycle for leaks. Did you find a leak? Check the electrical con-...
  • Page 55 Error P5: Excessive temperature on condenser The unit stops if the refrigerant temperature on the condenser outlet exceeds 65 °C. It re-starts once the temperature is 52 °C. Excessive tempera- Check the electrical ture safety shut- connection between Establish the connection correctly. down.
  • Page 56 REMKO MVT series Error P6: Inverter board safety shut-down (part 1) Inverter board safety shut- down Check the voltage between the inverter board's P and N See the second part of terminals. Is this between this table on the next...
  • Page 57 Error P6: Inverter board safety shut-down (part 2) Inverter board safety shut-down Check the voltage between the inverter board's P and N termi- See the first part of this table on nals. Is this between the previous page! 277-366 VDC (MVT 603 DC) or 277-410 VDC (larger versions)? Check the power supply...
  • Page 58 REMKO MVT series Check the individual components Check the temperature probes Disconnect the temperature probe from the control board and measure the resistance on the plug's contacts. Ä Chapter 11.3 ‘Resistances of the temperature probes’ on page 60) (See tables and Fig.
  • Page 59 Check the IPM board Switch the unit off and wait until the condensers are completely discharged. Disconnect the cables from the IPM board and measure the resistances between P and UVWN, UVW and N. Voltmeter Normal resistance Voltmeter Normal resistance (+) Red (-) Black (+) Red...

  • Page 60: Resistances Of The Temperature Probes

    REMKO MVT 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 61 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 62 REMKO MVT 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 63: 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 an annual 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 64: 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 65: Exploded View And Spare Parts Lists

    Exploded view and spare parts lists 14.1 Exploded view of the unit MVT 603 DC Fig. 27: Exploded view of the unit MVT 603 DC We reserve the right to modify the dimensions and design as part of the ongoing technical development process.

  • Page 66: Spare Parts List Mvt 603 Dc

    REMKO MVT series 14.2 Spare parts list MVT 603 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 Condenser protection grille Condenser front panel...

  • Page 67: Exploded View Of The Unit Mvt 903 Dc

    14.3 Exploded view of the unit MVT 903 DC Fig. 28: Exploded view of the unit MVT 903 DC We reserve the right to modify the dimensions and design as part of the ongoing technical development process.

  • Page 68: Spare Parts List Mvt 903 Dc

    REMKO MVT series 14.4 Spare parts list MVT 903 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 Condenser protection grille Condenser front panel...

  • Page 69: Exploded View Of The Unit Mvt 1053 Dc

    14.5 Exploded view of the unit MVT 1053 DC Fig. 29: Exploded view of the unit MVT 1053 DC We reserve the right to modify the dimensions and design as part of the ongoing technical development process.

  • Page 70: Spare Parts List Mvt 1053 Dc

    REMKO MVT series 14.6 Spare parts list MVT 1053 DC IMPORTANT! To ensure the correct delivery of spare parts, please always the device type with the corresponding serial number (see type plate) Designation Condenser protection grille Condenser front panel Fan blade...
  • Page 71 Designation Partitioning panel Service valve bracket Spare parts not illustrated Shut-off valve suction pipe 1/2" Temperature probe, suction pipe...

  • Page 72: Exploded View Of The Unit Mvt 1403 Dc

    REMKO MVT series 14.7 Exploded view of the unit MVT 1403 DC Fig. 30: Exploded view of the unit MVT 1403 DC We reserve the right to modify the dimensions and design as part of the ongoing technical development process.

  • Page 73: Spare Parts List Mvt 1403 Dc

    14.8 Spare parts list MVT 1403 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 Condenser protection grille Condenser front panel Fan blade Fan motor 4-way valve Low-pressure probe High-pressure probe...

  • Page 74: Index

    REMKO MVT series Index Ordering spare parts ... . 66, 68, 70, 73 Outdoor unit board malfunction display ..47 Alarms Checks ......46 Possible causes .
  • 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...

This manual is also suitable for:

Mvt seriesMvt 903 dcMvt 1053 dcMvt 1403 dc

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