43
11.
Pull the burners straight out of the heater.
12.
Reverse the above procedure to install the burners.
13.
Turn the gas supply “on”. Use a soapy water solution to check for leaks.
Bubbles forming indicate a leak.
WARNING: EXPLOSION HAZARD
The use of an open fl ame to check for gas
leaks could cause an explosion resulting in severe injury and/or death
GAS VALVE REPLACEMENT:
Refer to Figure 8, Figure 21, and Figure 22 as needed.
ATTENTION:
Do not attempt to repair the gas valve. If found defective, replace the entire valve
Attempts to repair it will void the warranty.
1. Turn pump, gas supply, and heater power “OFF”.
2. Disconnect the union joint in the gas supply piping outside the heater cabinet.
3. Remove the front access panel. It is secured with (4) screws.
4. Disconnect the wiring terminals from the gas valve.
5. Remove the gas manifold assembly. It is attached to the air box using (4) screws.
6. Unscrew the gas valve from the gas manifold pipe.
7. Reassemble the gas manifold assembly using the new gas valve. Only use liquid pipe thread seal-
ant on the male threads of the gas manifold pipe. Do not place pipe dope on the fi rst two threads of
any joint.
8. Reverse the above procedure to re-install the gas manifold.
IGNITER:
Refer to Figure 8 and Figure 21 as needed.
To remove the igniter:
1. Turn pump, gas supply, and heater power “OFF”.
2. Remove the front access panel. It is secured with (4) screws.
3. Disconnect the igniter wires from the ignition control board.
4. Remove the screws from the igniter access panel. Working from the underside of the panel, press
the bushing out of the hole in the sheet metal panel.
5. Slide the igniter wires through the slot on the panel and pull the panel free.
6. Remove the (2) screws that secure the igniter.
7. Pull the igniter straight back until it is free of the combustion chamber, then out of the air box.
8. Reverse the above procedure to install the igniter.
