To Check Or Adjust The Preset Outlet Temperature Setting - Rheem 27 874 Series Owner's Manual And Installation Instructions

COMMISSIONING
WARNING:
RHEEM SERVICE CENTRE REPRESENTITIVE. SEVERE SCALD INJURIES COULD OCCUR IF BATHROOMS
AND ENSUITES ARE NOT PROTECTCED BY A HOT WATER TEMPERING DEVICE.

TO CHECK OR ADJUST THE PRESET OUTLET TEMPERATURE SETTING

The temperature settings will be displayed on the LED display. The preset outlet temperature settings are:
• 874 series
It is necessary to have the electrical supply to the water heater switched on during stages of checking or
adjusting the preset outlet temperature setting procedure.
Warning: 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.
Warning: This procedure will involve the adjustment of dip switches. Adjustment of a dip switch should
only be made with an insulated tool.
To check or adjust the preset outlet temperature setting:
Switch off the electrical supply at the power outlet to the water heater.
1.
Remove the screws holding the front panel to the jacket.
2.
Gently disengage the front panel and pull forward to remove from the water heater.
3.
Switch on the electrical supply at the power outlet to the water heater.
4.
Switch dip switches 3 and 4 to the on (up) position on the DIP 1 set of DIP switches on the I.C. Board.
5.
The current preset outlet temperature setting will show on the LED
display.
If the temperature displayed on the LED display is the desired preset
outlet temperature setting, then proceed to step 7, as no further
adjustment is necessary.
874 series
If the water heater is to be used as a gas booster to a solar water
heater and '55' is shown on the display, then proceed to step 6, as
further adjustment is necessary.
Press the MAX button to increase or the MIN button to decrease the
6.
preset outlet temperature setting.
Each press of the MAX or MIN button will increase or decrease the
preset temperature by one increment.
The MAX and MIN buttons are located underneath the DIP 1 and
DIP 2 set of DIP switches.
874 series
The increments are 38°C, 40°C, 42°C, 43°C, 45°C, 50°C, 55°C, 70°C,
and 75°C.
Set the temperature to 75°C on an 874 series water heater if it is
installed as a gas booster to a solar water heater.
Switch dip switches 3 and 4 to the off (down) position.
7.
The temperature display will go blank. The preset outlet temperature
setting is now set.
8. Switch off the electrical supply at the power outlet to the water heater.
Refit the front panel and screws to the water heater.
9.
TEMPERATURE CHANGE MUST ONLY BE MADE BY A QUALIFIED INSTALLER OR
38°C, 40°C, 42°C, 43°C, 45°C, 50°C, 55°C, 70°C and 75°C
70
DIP 1 SET OF
DIP SWITCHES
ON
1 2 3 4
4
1 2 3
ON
1 2 3 4
1 2 3 4
MIN MAX ADJ
MIN. BUTTON
ADJUSTER
BUTTON
MAX. BUTTON