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Rinnai 20 B Series Heat Pump OIM - Issue 1
WIRING DIAGRAM
FILLING THE SYSTEM
Open hot water tap at sink.
Open the stop cock in the cold water main supply line. Allow the system to ll and the air to bleed through the tap.
Turn off the hot tap at the sink when water ows freely without any air bubbles or air bursts. If leaks are detected,
repair any leaks and repeat the lling process to remove any air.
If no leaks are detected water heating can commence.
COMMISSIONING AND FINISHING THE INSTALLATION
IMPORTANT
Please conrm the followings before commissioning:
•
Piping and electrical wiring are all correct
•
Earthing wire is installed properly
•
Pipe insulation is completed
•
Tank is lled
•
Supply Voltage complies with rated voltage
•
Air intake and discharge are not obstructed
Turn on the heat pump unit and wait a few seconds for the system to start. Change operation mode or water
temperature setting if required (it is recommended to retain default setting).
After testing is completed explain to the householder the functions and operation of heat pump water heater
components. Explain to the householder the need to drain the heat pump if freezing conditions are likely and power
is likely to be shut off for an extended time.
Also explain to the householder the importance of carrying out maintenance in accordance with this manual.
Leave the manual with the householder.
WARNING
DO NOT drill, screw or x any ancillary items to the of the tank. This product is tted with a high
eciency heat exchanger attached to the inner cylinder, anything penetrating the outer skin of the
tank may damage the heat exchanger�
INSTALLATION
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