Page 1
Assembly and operating instructions REMKO series MVT Multisplit air-conditioning systems - outdoor unit cooling and heating MVT 602 DC, MVT 902 DC, MVT 1052 DC, MVT 1402 DC Read the instructions prior to performing any task! 0131-2018-09 Edition 1, en_GB...
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- prints! Installation and operating instructions (translation of the orig- inal)
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....................... 5 1.6 Safety notes for the operator......................6 1.7 Safety notes for installation, maintenance and inspection..............
Page 4
REMKO series MVT Shutdown............................. 58 Exploded view and spare parts lists....................59 14.1 Exploded view of the unit MVT 602 DC..................59 14.2 Spare parts list MVT 602 DC...................... 60 14.3 Exploded view of the unit MVT 902 DC..................61 14.4 Spare parts list MVT 902 DC......................
Safety and usage instructions CAUTION! This combination of symbol and signal word 1.1 General safety notes warns of a potentially hazardous situation, which if not avoided may cause injury or mate- Carefully read the operating manual before com- rial and environmental damage. missioning the units for the first time.
"certificate of warranty" to conditions stipulated in this manual and comply REMKO GmbH & Co. KG at the time when the with all applicable regional regulations. units are purchased and commissioned.
1.11 Transport and packaging The devices are supplied in a sturdy shipping con- tainer. Please check the equipment immediately upon delivery and note any damage or missing parts on the delivery and inform the shipper and your contractual partner. For later complaints can not be guaranteed.
REMKO series MVT Technical data 2.1 Unit data MVT 602 MVT 902 MVT 1052 MVT 1402 Series Operating mode Inverter multisplit outdoor units for cooling and heating 10.6 12.3 Nominal cooling output (2.1-5.3) (2.1-7.9) (21.1-10.6) (2.10-12.30) Energy efficiency ratio SEER...
Page 9
MVT 602 MVT 902 MVT 1052 MVT 1402 Series R 410A Refrigerant Refrigerant, basic capacity equivalent 3.55 4.34 6.26 7.51 Refrigerant, additional quantity >5m Max. number of indoor units Refrigerant piping, max. length per IU Refrigerant piping, max. total length Refrigerant piping, max.
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 602 DC MVT 902 DC MVT 1052 DC MVT 1402 DC (All measurements in mm)
2,00 1,50 1,00 0,50 0,00 [°C] Fig. 2: Performance curves, heating MVT 602 DC (data for room temperature 20 °C) A: Outside temperature 1: COP 2: Heating capacity in kW 3: Power consumption in kW Outside temperature in °C Heating capacity in kW...
Page 12
REMKO series MVT Heating capacity MVT 902 DC 10,00 9,50 9,00 8,50 8,00 7,50 7,00 6,50 6,00 5,50 5,00 4,50 4,00 3,50 3,00 2,50 2,00 1,50 1,00 0,50 0,00 [°C] Fig. 4: Performance curves, heating MVT 902 DC (data for room temperature 20 °C)
Page 13
Heating capacity MVT 1052 DC 13,50 13,00 12,50 12,00 11,50 11,00 10,50 10,00 9,50 9,00 8,50 8,00 7,50 7,00 6,50 6,00 5,50 5,00 4,50 4,00 3,50 3,00 2,50 2,00 1,50 1,00 0,50 0,00 [°C] Fig. 6: Performance curves, heating MVT 1052 DC (data for room temperature 20 °C) A: Outside temperature 1: COP 2: Heating capacity in kW...
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 16
REMKO series MVT Fig. 11: System layout MVT 1402 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.
D: ATY The following combinations of outdoor units can be MVT 902 DC Combinations with 1 indoor unit selected: Indoor units Combi- MVT 602 DC Combinations with 1 indoor unit nation 2.0 kW 2.6 kW 3.5 kW 5.2 kW Indoor units...
Page 18
REMKO series MVT MVT 902 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...
Page 19
MVT 1052 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 llll llll Combinations with 3 indoor units Indoor units Combi-...
Page 20
REMKO series MVT MVT 1402 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...
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 to instal- door unit. The chapter on "Regulation" in the lation manual for the outdoor unit must therefore be observed.
REMKO series MVT 5.2 Wall openings Only use the union nuts supplied with the refrigerant piping. These should only be A wall opening of at least 70mm diameter and removed shortly before connecting the refrig- 10mm incline from the inside to the outside erant piping.
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 The indoor unit is designed for horizontal wall may be necessary to install a windbreak (to be pro- installation above doors.
REMKO series MVT Fig. 16: Installation inside buildings K: Cold fresh air / W: Warm air 3: Air shaft 1: Outdoor unit / 2: Additional fan 5.5 Minimum clearances 5.6 Oil return measures Observe the minimum clearances to allow access...
Installation The following instructions describe the installation of the cooling cycle and the assembly of the indoor 6.1 Connection of unit and the outdoor unit. refrigerant piping The required pipe diameters are given in the table "Technical data". The refrigerant piping is connected on the back side of the units.
Page 26
REMKO series MVT 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...
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. However, the process will take at least 60 minutes.
REMKO series MVT 6.4 Adding refrigerant Condensate drainage 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:...
Electrical wiring 8.1 General connection and safety Proceed as follows to connect the line: instructions Remove the side panel next to the terminals. 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 30
REMKO series MVT Fig. 23: Outdoor unit connection Fig. 24: Electrical wiring of the lines on an example of the MXD 1: Power supply 2: Strain relief 3: Control line for indoor unit A 4: Control line for indoor unit C...
8.3 Electrical wiring diagram MVT in combination with the indoor units ATY, MXD, MXT and MXW MVT 602 DC MVT 902 DC MVT 1052 DC MVT 1402 DC L(A) N(A) S(A) L(B) N(B) S(B) L(C) N(C) S(C) L(D) N(D) S(D)
REMKO series MVT 8.4 Electrical drawings Overview diagram MVT 602 DC L(B) N(B) S(B) Fig. 26: Overview diagram MVT 602 DC A: Control board Crankcase heating B: Inverter board Condensate tray heating AT: Mains cable for outdoor unit 230V / 1~ / 50Hz...
Page 33
Overview diagram MVT 902 DC Fig. 27: Overview diagram MVT 902 DC A: Control board Condensate tray heating B: Inverter board Temperature probe for condenser outlet T3 AT: Mains cable for outdoor unit 230V / 1~ / 50Hz Temperature probe for condenser inlet T4 IT: Connection for indoor units 1-3 High-pressure probe Compressor...
Page 34
REMKO series MVT Overview diagram MVT 1052 DC Fig. 28: Overview diagram MVT 1052 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 230V / 1~ / 50Hz...
Page 35
Overview diagram MVT 1402 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 BLUE CN52 CN16 H-PRO BLACK OPTIONAL...
REMKO series MVT 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 37
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 38
REMKO series MVT 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"...
Page 39
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. of suction pipe for indoor unit C (T is higher than 70°C, the display shows "70".
Page 40
REMKO series MVT (3) Cooling capacity - Heating capacity OU / IU Display Temperature (°C) Cooling Heating 20.0 Display capacity capacity 22.5 (kW) (kW) 25.0 2.0-2.5 2.0-2.5 27.5 2.0-2.5 2.0-2.5 30.0 3.0-3.8 3.0-3.8 32.5 4.5-5.0 4.5-5.0 34.5 5.5-6.1 5.5-6.1 6.1-7.0 (7) Outdoor unit current consumption 6.1-7.0...
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 42
REMKO series MVT 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...
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 The board shows E3 The control board cannot communicate with the...
Page 44
REMKO series MVT Error E5: Over-voltage or under-voltage error Over-voltage/under-voltage protection has tripped. Check the power supply voltage on the outdoor unit's L and N terminals. Is Correct the power supply this between 220 and 240 Is voltage present between...
Page 45
Error E8: Condenser fan speed control sensor 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 46
REMKO series MVT 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.
Page 47
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. Remove the low pressure probe's plug and measure Replace the low pressure...
Page 48
REMKO series MVT 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.
Page 49
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- nection between the heat Establish the electrical con- gas line temperature probe...
Page 50
REMKO series MVT 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. Over-temperature Check the electrical safety shut-down. connection between Establish the connection correctly.
Page 51
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 277-366 VDC (MVT 602 page! DC) or 277-410 VDC (larger versions)?
Page 52
REMKO series MVT 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!
Page 53
Check the individual components Check the temperature probes Disconnect the temperature probes from the control board and measure the resistance on the plug's con- tacts. Ä ‘Resistance values for probes T1, T2, T3, T4 and T2B’ on page 55 and Ä on page 56) (See tables Fig.
Page 54
REMKO series MVT 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...
Page 55
Resistance values for probes T1, T2, T3, T4 and T2B K Ohm K Ohm K Ohm K Ohm...
Page 56
REMKO series MVT Resistance values for probe T5 K Ohm K Ohm K Ohm K Ohm...
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-...
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.
Exploded view and spare parts lists 14.1 Exploded view of the unit MVT 602 DC Fig. 35: Exploded view of the unit MVT 602 DC We reserve the right to modify the dimensions and design as part of the ongoing technical development process.
REMKO series MVT 14.2 Spare parts list MVT 602 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...
14.3 Exploded view of the unit MVT 902 DC Fig. 36: Exploded view of the unit MVT 902 DC We reserve the right to modify the dimensions and design as part of the ongoing technical development process.
REMKO series MVT 14.4 Spare parts list MVT 902 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...
14.5 Exploded view of the unit MVT 1052 DC Fig. 37: Exploded view of the unit MVT 1052 DC We reserve the right to modify the dimensions and design as part of the ongoing technical development process.
REMKO series MVT 14.6 Spare parts list MVT 1052 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...
14.7 Exploded view of the unit MVT 1402 DC Fig. 38: Exploded view of the unit MVT 1402 DC We reserve the right to modify the dimensions and design as part of the ongoing technical development process.
REMKO series MVT 14.8 Spare parts list MVT 1402 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...
Index Ordering spare parts ... . 60, 62, 64, 66 Outdoor unit board malfunction display ..42 Alarms Checks ......41 Possible causes .
Page 68
SFlb Customer 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 dealers always guarantees quick and REMKO GmbH & Co. KG reliable service.