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ABOUT YOUR WATER HEATER

MAINS PRESSURE

The water heater is designed for direct connection to the mains water supply. If the mains supply pressure in

your area exceeds that shown on page 44, a pressure limiting valve must be fitted. The supply pressure

should be greater than 140 kPa for the rated flow and performance to be achieved.

HOW HOT SHOULD THE WATER BE?

The water heater may be installed with one or more user

adjustable temperature controllers, which allow you to choose

the most suitable temperature for your hot water needs (refer

to “Temperature Control” on page 9).

If a controller is not installed, the water heater heats the water

to the preset outlet temperature. The factory preset outlet

temperature is:

871 series 60°C

875 series 48 C

Note: The preset outlet temperature setting of this water

heater cannot be adjusted by the householder. The setting

can only be adjusted by the installer, your nearest Rheem

Service Department or their Accredited Service Agent.

If this water heater is installed as part of a solar water heater

system, the installer has checked and if required, adjusted

the preset outlet temperature setting of an 871 series water

heater to 60 C.

Note: For 871 series models manufactured before 2007, the factory preset outlet temperature is 50°C.

Warning: Temperature controllers must not be fitted to this water heater (871 series) as part of a solar

water heater system or if a Water Star water heater is installed because water at a temperature much higher

than the controller setting can be delivered. If a solar preheater or a Water Star water heater has been

installed to an existing water heater installation, then all controllers must be disconnected and removed.

If this water heater is installed as part of a solar water heater system, the system can deliver water at

temperatures from 58 C up to 75 C and possibly higher depending upon the model of solar water heater

installed.

HOTTER WATER INCREASES THE RISK OF SCALD INJURY

This water heater can deliver water at temperatures which can cause scalding. 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 be required by regulations that an approved temperature limiting device be fitted

into the hot water piping to the bathroom and ensuite when an 871 series 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 if no controllers are installed and the preset outlet temperature has not been adjusted below 55°C or if a

Kitchen controller is installed, still allow hotter water to the kitchen and laundry.

An 875 series water heater will not deliver temperatures exceeding 50 C, in accordance with AS 3498. There

is no requirement in AS/NZS 3500.4 to fit a temperature limiting device if this water heater is installed in

other than an early childhood centre, school, nursing home or a facility for young, aged, sick or disabled

people.

maximum Kitchen controller

temperature setting 871 series

maximum recommended supply

temperature to bathrooms and

ensuites.

maximum Bathroom controller

temperature setting 871 series

minimum Kitchen and Bathroom

controller temperature setting

maximum Kitchen and Bathroom

controller temperature setting

875 series

1 2 3 4 5 6 7 8 9 10 ... 75 76

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