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Rinnai 7 B Series Heat Pump OIM - Issue 1
OPERATING PRINCIPLE
The operation of an electric heat pump is very similar to a refrigerator, but in reverse. A heat pump operates by
transferring heat from the ambient outside air into the water. Electricity is just used to operate the system, but not
to directly heat the water. Because of this energy consumption is signicantly reduced as compared to an electric
element hot water system. The warmer the climate in which the heat pump is installed, the more efcient the heat
pump system will be at heating water.
The heat pump unit includes highly efcient micro-channel heat exchanger wrapped around the inner cylinder
for thermal conductivity. A temperature sensor in the tank is used to control the heat pump operation to achieve
suitable tank temperature.
During the occasional times when the ambient weather conditions are not suitable for the heat pump to operate,
the electric element will provide heating to ensure a supply of hot water.
SYSTEM SCHEMATIC
EVAPORATOR
FILTER
FILTER
EEV
HIGH PRESSURE
SWITCH
WATER TANK
HEAT EXCHANGER
MICRO-CHANNEL
COMPRESSOR
4 WAY
VALVE
WARNINGS AND IMPORTANT INFORMATION
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