Rheem 864 Series Owner's Manual And Installation Instructions page 95

OUTLET TEMPERATURE COMPENSATION ADJUSTMENT
The outlet temperature compensation adjustment function is only applicable to:

AU – Australian 866 series 627 water heaters
The maximum outlet temperature may be adjusted to compensate for temperature losses in the pipe work
between the water heater outlet and sanitary fixtures. The 866 series is available in Australia only.
 NZ – New Zealand 864 series 627 water heaters
The maximum outlet temperature may be adjusted to compensate for any minor over-heating of the water
by the water heater. This is to ensure the water temperature does not exceed 55°C at sanitary fixtures.
This procedure cannot be conducted on an Australian 864 series water heaters.
Warnings

After adjustment, the water temperature from the first tap in the hot water pipe work used for personal
hygiene purposes after the water heater, such as in a bathroom or ensuite, MUST NOT exceed:

The temperature displayed on a temperature controller connected to the water heater, or
AU – 50°C if a temperature controller is not connected to an 866 series water heater, or

 NZ – 55°C if a temperature controller is not connected to an 864 series water heater.

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:
 AU – a water temperature to be delivered from that tap of up to 2°C higher than the setting shown on
the controller.
 NZ – a water temperature to be delivered from that tap of up to 2°C lower 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.
Before Commencing the Procedure
This procedure cannot be conducted:

With a temperature controller connected to the water heater.

A temperature controller(s) connected to the water heater must be disconnected prior to the
commencement of this procedure. Refer to

With an EZ Link system set up on the water heaters.

The DIP switches need to be reset to the off (down) position on both water heaters prior to the
commencement of this procedure.

The EZ Link cable does not need to be disconnected.

The Outlet Temperature Compensation Adjustment procedure has to be performed individually on
both water heaters.

Whilst the procedure is being conducted on one water heater, the other water heater has to be
isolated by turning off the cold water isolation valve to the water heater.
"Disconnecting a Temperature Controller(s)"
95
COMMISSIONING
on page 96.