TM081 Rheem 834 Series Hydroelectric CFGWH Service Instructions
REV: AA Issued: 22/02/17
This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed uncontrolled.
45
COMPONENT ADJUSTMENT PROCEDURES & CHECKS
Warnings
Heater components and surrounding metallic parts can become extremely
hot. A SERIOUS BURN HAZARD EXISTS. Wear PPE to prevent the risk of
scalding.
Adjusting the Seasonal Adjustment Valve
The seasonal adjustment valve is located on the cold water inlet
below the water heater and provides the customer with the option
of reducing the water flow rate through the heater in colder
weather to avoid insufficient heating.
Rotate the valve fully clockwise to set to the winter (partially closed) position.
Rotate the valve fully anticlockwise to set to the summer (fully open) position.
Adjusting the Setpoint Temperature
1. Close all hot taps and ensure the water heater is
not operating.
2. Remove heater front panel (refer to component
replacement procedure 1 on page 50).
3. Set temperature controller DIP switches 7 and 8 to the desired setting as indicated in
the 'Setpoint Temperature Table'. Note: DIP switch up = ON.
4. Replace heater front panel.
DIP Switch Adjustments
Temperature controller DIP switches are factory set and should only require adjusting
when altering the setpoint temperature or checking and adjusting the burner gas pressure
settings.
The following table details DIP switch 1 ~ 6 settings. DIP switches 7 and 8 determine the
heater's setpoint temperature (refer to 'Adjusting the Setpoint Temperature' on page 45).
State
SW 1
SW 2
SW 3
SW 4
SW 5
SW 6
ON
Burn Adjust Burn Adjust Burn Adjust
Indoor
12 L model
LPG model
OFF
OFF
OFF
OFF
Outdoor
16 L model
NG model
DIP switches 1, 2 and 3 are only set to ON whilst performing the 'Checking & Adjusting
Burner Gas Pressure' procedure detailed on page 47.
DIP switches 4, 5 and 6 determine heater type.
The temperature control function is deactivated whilst performing the
'Checking & Adjusting Burner Gas Pressure' procedure. DIP switches 1, 2
and 3 MUST be set to OFF (down position) for the water heater to function
correctly during normal operation.
