Installation and Owner’s Manual – Radiant
®
Heat Pump
21
H4121 025960 Rev. B
For safe performance this water heater
is tted with:
• a Hotlogic controller
• a refrigerant over-pressure cut-out
• a compressor thermal cut-out
• a combination Pressure &
Temperature Relief (PTR) Valve.
Important: These devices
must not be tampered with
or removed. The water heater
must not be operated unless
these devices are tted and in
working order.
Electrical Cover
The electrical cover should be removed
only by an electrician. The electrical
power supply switch must be turned
off and the fuse removed at the main
electrical supply switchboard before
the water heater’s electrical cover is
removed.
PTR Valve
The PTR Valve should be checked for
adequate performance or replaced at
intervals not exceeding 5 years, or less in
areas where local regulations apply.
The lever on the relief valve should be
pulled to operate the valve at least once
every six months.
Danger: Failure to operate
the relief valve easing gear at
least once every six months
may result in the water
heater exploding. Continuous
leakage of water from the
valve may indicate a problem
with the water heater.
Note: The PTR valve and the drain
outlet pipe must not be sealed or
blocked. It is normal for the valve to
overow during heating cycles.
Safety Information
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