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Rinnai 22 EHPA Heat Pump OIM
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.
Bleed any remaining air from the PTR valve.
Automatic air bleed valve is tted on top of the circulation pump of the heat pump module:
Automatic
Air Bleed
Valve
Turn on power to the heat pump unit.
Wait 30 s for the circulation pump to turn on
Any remaining air will be bled from the automatic air vent.
If leaks are detected turn off power to the heat pump, repair any leaks and repeat the lling process to remove any
air.
If no leaks are detected water heating can commence. The heat pump will start up after the 2 minute protection
time.
FINISHING THE INSTALLATION
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.
Also explain to the householder the importance of carrying out maintenance in accordance with this manual.
Leave this manual with the householder.
INSTALLATION
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