GB - 11
30RHV
E N G L I S H
Water - refrigerant heat exchanger
Evaporator
Condenser
Water inlet
Chilled water outlet
Water inlet
Chilled water outlet
Gas
Refrigerant
Gas
Liquid
Flow diagram for heat pump units: cooling cycle
Flow diagram for heat pump units: heating cycle
1. High pressure transducer
2. High pressure switch
3. Low pressure transducer
4. Pressure service port
5. Pressure control opening (TXV)
6. Crankcase heater
7. Suction accumulator
8. Water inlet
9. Chilled water outlet
10. Hot water outlet
11. Reversing valve
Refrigerant R-410A
Gas
Gas
Liquid
• The unit includes a brazed plate water-refrigerant heat
exchanger.
The heat exchanger operates as an evaporator in the summer
cycle and as a water-cooled refrigerant condenser in winter
cycle.
• Check if characteristics of the water in the refrigerant circuit are
correct. If necessary, treat water as appropriate.
CAUTION: In winter water frost may damage the unit.
To avoid freeze-up of the water contained in the system, one of the
following precautions must be taken during the winter cycle:
• drain the water from the system, using the drains in the lower part
of the unit,
or
• add the correct percentage of glycol to the water circuit.
