Rheem II Series User Manual

TM090 12-26 Series II CFGWH Service Instructions
REV AB – Issued February 2019
This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”
9
PRESET TEMPERATURE ADJUSTMENT
Voltages up to 240 volts will be present within the water heater, take care
not to touch wiring terminals. Use an insulated tool when operating the DIP
switches or MIN and MAX buttons.
If this water heater is used as an in-series booster for a solar water heater it
must have the outlet temperature set at 70ºC in order to comply with the
requirements of AS 3498.
To adjust the preset temperature:
1. Remove the front cover from the water heater.
2. Turn DIP SWITCHES 3 and 4 on (up position). Refer to area
‘D’ on page 32 for dip switch location. The current preset
temperature is displayed on the OK Monitor.
3. Press the MIN or MAX button, located under the DIP Switches, until the desired
temperature is displayed. Available temperatures are:
Rheem 874 Series / Solahart 60° models:
38ºC, 40ºC, 42ºC, 43ºC,48ºC, 50ºC, 55ºC, 60ºC, 65ºC, 70ºC and 75ºC.
Rheem 876 Series 50° models:
38ºC, 40ºC, 42ºC, 43ºC, 45ºC, 48ºC, and 50ºC.
Turn DIP SWITCHES 3 and 4 off (down position). The temperature display is now turned
off.
4. Refit the front cover to the water heater.
FINE TEMPERATURE ADJUSTMENT
The maximum outlet temperature of a 48ºC model may be adjusted to compensate for
temperature losses in the pipe work between the water heater outlet and sanitary fixtures.
After adjustment, the water temperature 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
MUST NOT exceed:
 48°C if a temperature controller is connected to the water heater, or
 50°C if a temperature controller is not connected to the 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 a
water temperature to be delivered from that tap of up to 3°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.
Note: The preset outlet temperature setting of the water heater must be set at 48°C prior to
the commencement of this procedure.
ON
OFF

Rheem II Series Specifications

General

Brand	Rheem
Model	II Series
Category	Water Heater
Language	English