PRESET OUTLET TEMPERATURE SETTING
The factory preset outlet temperature setting of the water heater is:
872 series 60°C for a single water heater
60°C as part of a Multipak system
70°C as part of a Commpak system
If a temperature controller is connected to the water heater, this will override the preset outlet temperature
setting and the maximum temperature setting will be:
Maximum Outlet Temperature
Kitchen controller connected
Bathroom controller only connected
It is usually not necessary to adjust the factory preset outlet temperature setting of the water heater, unless
the customer or application has a particular requirement for this to be done.
For applications requiring sanitising temperatures, such as a commercial kitchen, it will be necessary to
adjust the preset outlet temperature setting to 82°C.
If the water heater is installed as part of a circulated hot water flow and return system in a building, the preset
outlet temperature setting must be set to at least 60°C. If the water temperature decreases by more than 5°C
through a circulated hot water flow and return system due to heat loss in the ring main, the preset outlet
temperature setting of the water heater should be set to at least 65°C.
Refer to “To Check or Adjust the Preset Outlet Temperature Setting” on page 36 to check or if required to
adjust the preset outlet temperature setting of the water heater.
Gas Booster for a Solar Water Heater
Note: AS 3498 requires that a water heater provides the means to inhibit the growth of Legionella bacteria in
potable water. When this water heater is used as an in-series booster for a solar water heater it can satisfy
this AS 3498 requirement provided it is energised, the booster preset outlet temperature setting is 70°C or
higher, and that a remote temperature controller is not used.
It will be necessary to check and if required to adjust the preset outlet temperature setting of the continuous
flow water heater when:
it is installed as an in-series gas booster to a solar water heater
it is an existing continuous flow water heater and a solar water heater is then installed.
Consideration must be given to the delivery temperature to any ablution and public areas such as a
bathroom, ensuite or public amenities. Refer to “Hot Water Delivery” on page 19 and to “Schematics of
Two Temperature Zones Using A Temperature Limiting Device” on page 20.