Oilon RE 35, Installation And Operation Manual

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RE01 1445EN 7 (67)
Next, the high-pressure gaseous refrigerant is led into the condenser, where it releases
its heat energy into the water that circulates between the heat pump and the buffer
tank. As the refrigerant releases its heat energy and its temperature drops, it becomes
liquid again.
The liquid refrigerant is then led into an expansion valve, where the pressure and
temperature are lowered further. The refrigerant completes its circuit by returning back
to the evaporator, where it receives heat energy from the brine circuit.
The heat pump can also be used as a water chiller.
1.6. Main features
The following figure represents a principle of the RE heat pump connections. For more
detailed instruction about connections, see section Piping diagrams .
RE16 ver. 1
1. Evaporator
2. Compressor
3. Condenser
4. Expansion valve
5. Desuperheater (option)
A. Brine circuit
B. Refrigerant circuit
C. Condenser circuit
D. Desuperheater circuit
E. Domestic hot water
F. Heating circuit out
G. Domestic cold water
H. Heating circuit in
The RE heat pump is always connected to a separate buffer tank or buffer tanks.
Domestic hot water is warmed up in hot water loops inside buffer tank. Preheating loop
can be located in the middle of the same buffer tank or in another buffer tank. Rest of
the heating is carried out by loop in the upper part of the buffer tank or loop in separate
domestic hot water buffer tank.
For all RE heat pumps, the desuperheater functionality can be ordered as an option.