VRF system

For an optimal climate

Gas engine heat pump

VRF SYSTEM

As an air-to-air system, the gas engine heat pump situated in the outside area is connected in classic split construction with up to 48 indoor units. The diverse designs of connectable indoor units on this refrigerant-bearing VRF  system enable an application-oriented and quick adjustment to changing heating and cooling requirements.


The system is suitable for monovalent operation as a result of the internal use of the engine and exhaust heat. Moreover, this heat is used for defrosting the registers without heating interruption.

Yanmar_GMWP_VRF-System_ENG

System diagram example 2-pipe

System diagram example 3-pipe

Gas engine heat pump – 2-pipe

ProductProductRated capacityTechnical dataDrawingSpecification text
produktbild_klein_gmwp_450-560ENCP 450 J
ENCP 560 J
Heating: 50 kW / Cooling: 45 kW
Heating: 63 kW / Cooling: 56 kW
ENCP 450 J
ENCP 560 J
ENCP 450 J
ENCP 560 J
produktbild_klein_gmwpENCP 710 J
ENCP 850 J
Heating: 80 kW / Cooling: 71 kW
Heating: 95 kW / Cooling: 85 kW
ENCP 710 J
ENCP 850 J
ENCP 450 J
ENCP 560 J

Gas engine heat pump – 3-pipe

ProductProductRated capacityTechnical dataDrawingSpecification text
produktbild_klein_gmwp_450-560EFZP 560 JCHeating: 63 kW / Cooling: 56 kW EFZP 560 JC EFZP 560 JC
produktbild_klein_gmwpEFZP 850 JCHeating: 95 kW / Cooling: 85 kW EFZP 850 JC EFZP 850 JC
ProductProductDescriptionRated capacityTechnical dataDrawingSpecification text
FXAQ-PY/FXAQ-AWall-mounted unitCooling: 2,2 – 7,1 kW
Heating: 2,5 – 8,0 kW
FXLQ-PY/FXLQ-PFloor-standing unit

Cooling: 2,2 – 7,1 kW
Heating: 2,5 – 8,0 kW

FXHQ-AY/FXHQ-ACeiling-suspended unit

Cooling: 2,2 – 14,0 kW
Heating: 2,5 – 16,0 kW

FXCQ-AY/FXCQ-ACeiling mounted cassette 2-way blow

Cooling: 2,2 – 14,0 kW
Heating: 2,5 – 16,0 kW

FXZQ-A1Y/FXZQ-ACeiling mounted cassette 4-way blow

Cooling: 2,2 – 5,6 kW
Heating: 2,5 – 6,3 kW

FXFQ-AY/FXFQ-BRoundflow ceiling mounted cassetteCooling: 2,2 – 14,0 kW
Heating: 2,5 – 16,0 kW
FXSQ-AY/FXSQ-AConcealed ducted unit – MSP

Cooling: 2,2 – 16,0 kW
Heating: 2,5 – 18,0 kW

Y-FXMQ-P7Y/FXMQ-P7Concealed ducted unit – HSP

Cooling: 5,6 – 14,0 kW
Heating: 6,3 – 16,0 kW

Y-FXMQ-MBY/FXMQ-MBConcealed ducted unit – HSP

Cooling: 22,4 – 28,0 kW
Heating: 25,0 – 31,5 kW

CYV-LY/CYV-LAir curtain

Heating: 15,6 – 31,1 kW

ProductProductDescriptionRated capacityTechnical dataDrawingSpecification text
VRF-HB250VRF-HB250VRF HydroboxHeating 4,5 – 28,0 kW VRF-HB250 VRF-HB250
Y/EKEQ MCBAY/EKEQ MCBACommunication kit for external heat exchangers

Cooling: 5,0 – 61,6 kW
Heating: 5,6 – 69,3 kW

Y/EKEQ MCBA
ProductProductDescriptionRated capacityTechnical dataDrawingSpecification text
VAMY/VAM-FCVentilation unitAir volume: 150 – 2000 M³/H
Y/EKEQ MCBAY/EKEQ MCBAAHU integration kitCooling: 5,0 – 61,6 kW
Heating: 5,6 – 69,3 kW
Y/EKEQ MCBA
ProductProductType designationTechnical dataSpecification text
FernbedienungRemote controlY/BRC2E52C Y/BRC2E52C Y/BRC2E52C
FernbedinungHotel remote controlY/BRC3E52C Y/BRC3E52C Y/BRC3E52C
Infrarot-FernbedienungenInfrared remote controlY/BRC4 / BRC7 Y/BRC4 / BRC7
Touch ManagerTouch ManagerY/DCM601A51
Y/DCM601A52
Y/DCM002A51
Y/DCM008A51
Y/DCM009A51
Y/DCM601A51
Y/DCM601A52
Y/DCM002A51
Y/DCM008A51
Y/DCM009A51
Bacnet SchnittstelleBacnet interfaceY/DMS502A51 Y/DMS502A51 Y/DMS502A51
Bacnet SchnittstelleLonworks interfaceY/DMS504B51 Y/DMS504B51 Y/DMS504B51
KNX SchnittstelleKNX interfaceY/KLIC-DI Y/KLIC-DI Y/KLIC-DI
DIII-Net ModbusDIII-Net Modbus interfaceY/EKMBDXA Y/EKMBDXA Y/EKMBDXA
ProductProductType designationTechnical dataSpecification text
ZusatzplatinenAdaptorKRP1B57
KRP1B57-1
KRP1B57
KRP1B57-1
KRP2A52AdaptorKRP2A52 KRP2A52
KRP4A53AdaptorKRP4A53 KRP4A53
KRP4A53-1AdaptorKRP4A53-1 KRP4A53-1
DTA104A61AdaptorDTA104A61 DTA104A61
DCS302A52AdaptorDCS302A52 DCS302A52
KRPingoAdaptorKRPingo KRPingo
RTD-NETInterface cardRTD-NET RTD-NET
RTD-10Interface cardRTD-10 RTD-10
RTD-20Interface cardRTD-20 RTD-20
RTD-10Interface cardRTD-HO RTD-HO
ProductProductType designationTechnical dataSpecification text
BS-UnitBS unitY/BS1Q10A Y/BS1Q10A
BS-UnitBS unitY/BS1Q16A Y/BS1Q16A
BS-UnitBS unitY/BS1Q25A Y/BS1Q25A
ProductProductType designationTechnical dataSpecification text
TemperaturfühlerTemperature sensorY/KRCS01-1
Y/KRCS01-4
Y/KRCS01-1
Y/KRCS01-4
VerteilerBranching pipe for 2-pipe systemsY/KHRQM 22 M 20 T
Y/KHRQM 22 M 29 T
Y/KHRQM 22 M 64 T
Y/KHRQM 22 M 75 T
Y/KHRQM 22 M 20 T
Y/KHRQM 22 M 29 T
Y/KHRQM 22 M 64 T
Y/KHRQM 22 M 75 T
VerteilerBranching pipe for 3-pipe systemsY/KHRQM 23 M 20 T
Y/KHRQM 23 M 29 T
Y/KHRQM 23 M 64 T
Y/KHRQM 23 M 75 T
Y/KHRQM 23 M 20 T
Y/KHRQM 23 M 29 T
Y/KHRQM 23 M 64 T
Y/KHRQM 23 M 75 T

Heat pumps are the ideal solution for air conditioning a building. Heat pump systems that work according to the VRF technical principle are particularly suitable for large office buildings, hotels and other commercial buildings. The abbreviation VRF comes from “Variable Refrigerant Flow”. VRF systems with gas engine heat pumps from YANMAR offer two important advantages: On the one hand, they allow individual building areas or rooms to be heated or cooled to different degrees – even simultaneous heating and cooling is possible if, for example, individual sides of the building receive a lot of sunlight in the spring, while others lie in the shade. On the other hand, they represent an extremely economical solution in buildings with many rooms or residential units.

Heat pumps transport heat and at the same time raise it to a higher energy level. To do this, they cause a refrigerant to evaporate at low pressure, with heat being absorbed. Heating is about abundant ambient heat, while cooling is about excess heat from the building. They then cause the refrigerant to condense again at high pressure, with the absorbed heat being released again at a technically advantageous temperature level. Often the cycle of evaporation and liquefaction only takes place in the heat pump itself, while the further heat transport takes place via a water circuit or a ventilation system. As a further development of multisplit technology, VRF systems, on the other hand, are more decentralized. The refrigerant flows directly to wall, floor standing, ceiling or ceiling suspended, duct devices and air curtains in the building. Only in these indoor units – up to 48 pieces per YANMAR gas engine heat pump – is it liquefied or evaporated again, in order to finally flow back to the heat pump.

The distinguishing feature of VRF systems is that the strength of the refrigerant flow is always matched to the current demand of the indoor units. So only as much energy flows through the air conditioning system at all times as is necessary to keep the temperature in each area of ​​the building at the desired value. The continuously adjustable compressor or drive of the heat pump can therefore always work with the most efficient output at VRF. And gas-powered heat pumps are used in a VRF system, e.g. modern gas engine heat pumps from YANMAR increase efficiency and profitability significantly. Thanks to the engine heat – which can be used for heating or water heating anyway – the defrosting phases required for electrical systems on cold days are no longer necessary. Instead, a VRF system with gas engine heat pumps can be started up effortlessly, even at outside temperatures of minus 20 degrees Celsius, and can develop its full heating capacity right from the start.

The VRF principle also offers important advantages. Compared to other systems, for example, the space required for the installation is small, mainly due to the thin copper pipes for the refrigerant. VRF air conditioning systems are therefore also ideally suited for the air conditioning modernization of existing buildings. System planning is also easy with VRF systems. And finally, VRF systems designed as 3-pipe systems offer maximum comfort in all weathers. In these systems, a hot gas line is added to the line for liquid refrigerant and the suction line for gaseous refrigerant. Warm, gaseous refrigerant flows in this line from the heat pump to the indoor units. Such a VRF heat pump system not only enables the energy-efficient heating or cooling of the entire building. Rather, each indoor unit can give off or dissipate heat at any time. Precise temperature control is therefore possible even under demanding conditions without any additional heat or cold generator.

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