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ABOUT YOUR WATER HEATER
5
TEMPERATURE ADJUSTMENT
The water heater features an electronic adjustable thermostat. We recommend only a licensed tradesperson
make any temperature adjustments. We advise the thermostat be adjusted to the lowest temperature setting
that meets your needs, especially if there are young children or elderly people in the premises. Refer to “Hotter
Water Increases the Risk of Scald Injury” on page 4.
ELECTRONIC THERMOSTAT
The thermostat automatically operates the gas control by switching its power on and off, so a constant
temperature is maintained. The thermostat is mounted externally on the water heater and the protective over-
temperature cut-out is mounted inside the lower front cover of the water heater.
There is no need to switch the water heater off when it is not in use. The thermostat is fully automatic and only
allows the gas control to open when the burner requires gas for heating. The thermostat displays the current
water temperature. To adjust the thermostat settings refer to “Temperature Control” on page 40.
HOT SURFACE IGNITION
The water heater incorporates an automatic burner ignition system. A hot surface igniter (HSI) probe
automatically heats up when the thermostat registers heating of the water is required. When the HSI probe is
fully energised, the gas valve opens allowing gas to the burner which in turn is ignited by the HSI probe.
WARNING
This water heater is only intended to be operated by persons who have the experience or the knowledge and
the capabilities to do so. This water heater is not intended to be operated by persons with reduced physical,
sensory or mental capabilities i.e. the infirm, or by children. Children should be supervised to ensure they do
not interfere with the water heater.
This water heater uses 240 V AC electrical power for operation of the control systems and the electrically
operated components. The removal of the access cover(s) will expose 240 V wiring. They must only be
removed by a qualified person.
The water heater is fitted with a power supply cord and plug and must be plugged into a weatherproof electrical
outlet if installed outdoors. Take care not to touch the power plug with wet hands.
SAFETY
If the power supply cord or electrical conduit to the water heater is damaged, it must be replaced by a qualified
person in order to avoid a hazard. The power supply cord and plug must be replaced with a genuine
replacement part available from Rheem. Phone Rheem Service or their nearest Accredited Service Agent to
arrange for an inspection.
This water heater is supplied with a thermostat, an over-temperature cut-out, and a combination temperature
pressure relief valve. These devices must not be tampered with or removed. The water heater must not be
operated unless each of these devices is fitted and is in working order.
The operation of the over-temperature cut-out on the thermostat indicates a possibly dangerous situation. If
the over-temperature cut-out operates, it must not be reset and the water heater must be serviced by a qualified
person.
Warning: For continued safety of this water heater it must be installed, operated and maintained in
accordance with the Owner’s Guide and Installation Instructions.
The Rheem warranty may not cover faults if relief valves or other safety devices are tampered with or
if the installation is not in accordance with these instructions.
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