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ABOUT YOUR WATER HEATER
REDUCED HOT WATER FLOW WHEN HEAT EXCHANGER IS COLD
At a cold start-up, i.e. when the gas booster has not operated for some time (which is most often first thing in
the morning), the initial flow of hot water may be reduced for a period of 5-10 seconds while the heat exchanger
warms up. This is both an energy and water saving feature of this water heater. Once the heat exchanger
has warmed up the hot water flow will increase and remain at normal flow levels. This feature will only occur
at a cold start-up and not when the heat exchanger is already warm from a recent use of hot water.
HOW HOT SHOULD THE WATER BE?
The solar control unit will circulate the closed circuit fluid through the
solar collectors until a temperature of approximately 75°C is reached
typical maximum
in the solar storage tank. During periods of low solar energy gain, the
temperature from solar gain
in-series gas booster will boost the water temperature automatically
to its preset outlet temperature setting.
in-series gas booster
The factory preset outlet temperature setting of the in-series gas
factory preset outlet
booster is 60°C.
temperature setting
Note: The preset outlet temperature setting of the in-series gas
maximum recommended
booster cannot be adjusted by the householder. The setting can only
supply temperature to
be adjusted by the installer, Rheem Service or their nearest
bathrooms and ensuites
Accredited Service Agent.
Note: AS 3498 requires that a water heater provides the means to
inhibit the growth of Legionella bacteria in potable water. This water
heater has an in-series gas booster which can satisfy this AS 3498
requirement provided the gas booster is energised, the booster preset
outlet temperature setting is 70°C or higher and a remote temperature
controller or an EZiSET kit is not used.
Warning: Temperature controllers or an EZiSET kit must not be fitted to the in-series gas booster as part
of a solar water heater system because water at a temperature much higher than the controller or EZiSET
setting can be delivered.
HOTTER WATER INCREASES THE RISK OF SCALD INJURY
This water heater can deliver hot water at a temperature up to 75°C, sufficiently hot to cause severe scalding.
Water at this temperature may have been plumbed to fixtures where water hotter than 50°C is allowed, such
as the kitchen and laundry.
Check the water temperature before use, such as when entering a shower or filling a bath or basin, to ensure
it is suitable for the application and will not cause scald injury.
We recommend and it may also be required by regulations that an approved temperature limiting device be
fitted into the hot water pipe work to the bathroom and ensuite when this water heater is installed. This will
keep the water temperature below 50°C at the bathroom and ensuite. The risk of scald injury will be reduced
and still allow hotter water to the kitchen and laundry.
FREEZE PROTECTION
The water heater has a freeze protection system. The water heater, including the in-series gas booster, is not
suitable for installation in areas where the ambient temperature falls below -20°C (including wind chill factor).
"Freeze Protection"
Refer to
on page 26 for further information.
PRECAUTIONS
The water heater must be maintained in accordance with the Owner's Guide and Installation Instructions. Refer
"Maintenance Requirements"
"Anode Inspection and Replacement"
to
on page 16 and to
on page 19.
If this water heater is to be used where an uninterrupted hot water supply is necessary for your application or
business you should ensure that you have back-up redundancy within the hot water system design. This should
ensure the continuity of hot water supply in the event that this water heater were to become inoperable for any
reason. We recommend you seek advice from a plumber or specifier about your needs and building back-up
redundancy into your hot water supply system.
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