TEMPERATURE CONTROL – STANDARD
12
TEMPERATURE SETTINGS – STANDARD CONTROLLER
The temperature settings of each type of controller are:
• Bathroom1 & 2 37°C to 48°C (in 1°C increments), 50°C
• Kitchen 37°C to 48°C (in 1°C increments), 50°C*, 55°C
Temperature settings
37 38 39 40 41 42 43 44 45 46 47 48 50 55
warm average hot shower hot very hot
The installation of a Bathroom controller(s) only (i.e. no Kitchen controller) limits the temperature setting of
the water heater to a maximum of:
• 874 series 50ºC
Regardless of the preset outlet temperature setting of the water heater.
The installation of a Kitchen controller will allow a maximum temperature setting of:
• 874 series 55ºC
Regardless of the preset outlet temperature setting of the water heater.
If controllers are not installed, the water heater defaults to the preset outlet temperature setting. This may be
up to:
• 874 series 55°C
Refer to “How Hot Should The Water Be?” on page 5.
If a building is fitted with a temperature limiting device to ablution areas, and an 874 series water heater is
installed with a separate untempered hot water line to the kitchen, laundry or other non-ablution areas, the
kitchen controller will be able to display temperatures up to 55°C, however the tempered water at ablution
areas may be lower.
However, the maximum water temperature which can be delivered to the hot water outlets in these locations
is determined by the preset temperature setting of the temperature limiting device. If fitted, this is usually
55°C; however the temperature setting of the temperature limiting device will determine the outlet
temperature.
To enable the delivery of water temperatures above 55°C (e.g. when used as a Solar Booster), the water
heater preset temperature will need increased. To supply water above 55°C to the kitchen, laundry or other
non-ablution area, a separate untempered supply must be installed from the water heater to the hot water
outlets in these locations.
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