Rheem 551180 Owner's Manual And Installation Instructions page 10

SAFETY, WARNINGS, INSTALLATION NOTES
If water does not flow freely from the drain line when the lever is lifted, then the water heater must be
checked. Phone Rheem Service or their nearest Accredited Service Agent / Centre to arrange for an
inspection.
The temperature pressure relief valve should be replaced at intervals not exceeding five (5) years and the
expansion control valve should be checked for performance or replaced at intervals not exceeding
five (5) years. The checking of the valves performance or replacement should occur more frequently in areas
where there is a high incidence of water deposits. Refer to
INSTALLATION NOTES
This water heater must be installed:
•
by a qualified person,
•
in accordance with the installation instructions,
•
in compliance with the Plumbing Code of Australia (PCA) and Plumbing Standard AS/NZS 3500.4,
▪
This water heater is designed for outdoor installation only.
▪
This water heater is intended to be permanently connected to the water mains and not connected
by a hose-set. A braided flexible hose or semi-flexible connector may be used for connection to the
water heater, where permitted by AS/NZS 3500.4.
▪
Refer to dimensions diagram
for the heat pump.
•
in compliance with the Australian / New Zealand Wiring Rules AS/NZS 3000,
▪
Isolation switches must be installed in the electrical circuit to the water heater in accordance with
the Wiring Rules, so the water heater can be switched off.
▪
The water heater must be directly connected to the mains power supply.
•
in compliance with all local codes and regulatory authority requirements,
•
in New Zealand also conforming to Clauses G12 and H1 of the New Zealand Building Code.
Installation and commissioning requirements and details for the installing plumber and licensed electrical
worker are contained on
Mains pressure water supply
The water heater is designed to operate at mains pressure by connecting directly to the mains water supply.
The water heater is supplied with a temperature pressure relief valve with a pressure rating of 1000 kPa. If
an expansion control valve has been installed on the cold water line to the water heater, this should have a
pressure rating of 850 kPa.
The maximum mains water supply pressure for the water heater is 800 kPa if an expansion control valve is
not installed, or 680 kPa if an expansion control valve is installed. If the mains supply pressure in your area
exceeds these values, a pressure limiting valve must be installed.
The supply pressure should be greater than 350 kPa for true mains pressure operation to be achieved.
on page 33 for clearance requirements to provide adequate ventilation
pages 28 to 42.
"Water Supplies"
on page 22.
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