Water-Refrigerant Heat Exchanger - Carrier AQUASNAP JUNIOR 30RHV Installation Manual

30RHV
Water - refrigerant heat exchanger
Evaporator
Refrigerant
• 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.
Flow diagram for heat pump units: cooling cycle
Flow diagram for heat pump units: heating cycle
Water inlet
Chilled water outlet
Gas
Condenser
Liquid + Gas
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.
E N G L I S H
Water inlet
Chilled water outlet
Liquid
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
Liquid + Gas
Liquid
GB - 11