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COMMISSIONING
78
OUTLET TEMPERATURE COMPENSATION ADJUSTMENT – 876 SERIES
The maximum outlet temperature of an 876 series water heater may be adjusted to compensate for
temperature losses in the pipe work between the water heater outlet and sanitary fixtures.
Warnings
After adjustment the water temperature MUST NOT exceed 50°C from the first tap in the hot water pipe
work after the water heater used for personal hygiene purposes, such as in a bathroom or ensuite.
If there is a tap, such as a kitchen or laundry tap, in the hot water pipe work between the water heater
and the first tap used for personal hygiene purposes, then it is possible for a water temperature to be
delivered from that tap of up to 2°C higher than the setting shown on the controller.
It is necessary to have the electrical supply to the water heater switched on during stages of the outlet
temperature compensation adjustment procedure.
Warnings
The removal of the front panel will expose 240 volt wiring. Take care not to touch wiring terminals. The
adjustment must be carried out by a qualified person.
This procedure will involve the adjustment of dip switches. Adjustment of a dip switch should only be
made with an insulated tool.
This procedure cannot be conducted with a temperature
controller connected to the water heater. Any temperature
controller(s) connected to the water heater must be
disconnected prior to the commencement of this procedure.
Disconnecting a Temperature Controller(s)
To disconnect the temperature controller(s):
1. Switch off the electrical supply at the power outlet to the
water heater.
2. Unscrew and gently remove the electrical cover from the
underside of the water heater.
3. Loosen the terminal screws to release the cables.
4. Withdraw the cables from the terminals and cable holder
notches, ensuring they are well clear of the terminals.
Note: The preset outlet temperature setting of this water
heater must be set at 50°C prior to the commencement of
this procedure. Refer to “To Check or Adjust the Preset
Outlet Temperature Setting” on page 77.
Outlet Temperature Adjustment
To adjust the outlet temperature:
1. Switch on the electrical supply at the power outlet to the water heater.
2. Locate the first hot tap in the hot water pipe work after the water heater used for personal hygiene
purposes.
3. Turn on the hot tap.
4. Using a thermometer, measure the temperature of the water from the tap, until the temperature stops
increasing.
If the water temperature is below 50°C the maximum outlet temperature of the water heater can be
adjusted upwards.
CABLE
HOLDER
NOTCHES
CABLE
TERMINAL
SCREWS
PROJECTION
SCREW x 3
ELECTRICAL
COVER
Controller Cable Connection
Rheem Continuous Flow 86, 87 Series 022, 024, 027 Models
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