24
8. CONTROLS
ROLL-OUT
SWITCH
GAS VALVE
PILOT
AFT THERMOSTAT
CIRCUIT BOARD
TRANSFORMER
(BEHIND PANEL)
UNITHERM
GOVERNOR
DRAIN VALVE
MOUNTED ON IN/OUT
HEADER
HL1 - HIGH LIMIT
TEMP SENSOR/WELL
MOUNTED ON RETURN
HEADER
HL2 - HIGH LIMIT
DRAIN PLUG
Figure 31. General Location of Controls
8.1. Control Panel Removal
1. Remove screw from front door. Set aside door for
serviceability.
2. Remove (4) screws from sides of control panel.
3. Rotate control panel down until panel stops. Do not
force.
NOTE:
Caution must be used to not damage controls or
wiring.
KNURLED
SCREW
Figure 32. Knurled Screw Location
8.2. Control Adjustments
The pool heater touchpad, located on the upper front
panel of the heater, allows the user to select either POOL
or SPA operation, and to adjust the setpoint temperature.
The LCD display window indicates the mode (OFF, SPA,
POOL) and the actual water temperature. A manual power
switch provided below the touchpad turns the control
power ON or OFF.
TEMP
MODE
ON
OFF
LCD Display
Temp Adjust Buttons
Mode Button
Figure 33. Digital Control Adjustment
8.2.1. MENU/SET Button
The MENU/SET button is used to select POOL or
SPA operation. It allows the user to turn the heater off
electronically. The LCD remains energized and displays
OFF, while continues to show the actual water temperature.
8.2.2. Temp Buttons
If the heater is in POOL or SPA mode, the desired water
temperature (SETPOINT) will be displayed and may be
adjusted using the UP or DOWN buttons.
8.3. Operation
In the POOL or SPA modes, the actual water temperature
is displayed along with the desired water temperature
(SETPOINT). When the water temperature is above the
setpoint, “Water Temp” will alternate with “No Demand.”
When the water temperature is below the setpoint and the
heater is firing, “Water Temp” will alternate with “Heating.”
To adjust the setpoint temperature, make sure the control
is in the appropriate mode (POOL or SPA) and push the UP
or DOWN buttons.
