50
20.3
SERVICE
Disconnect main power and turn off gas supply before servicing unit.
To remove and clean the burner, follow the detailed procedure in section 16 of this manual
After the first season of operation inspect the heat exchanger and venting. Follow the detailed instructions
in section 6 of this manual.
CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause
improper and dangerous operation. Verify proper operation after servicing.
Any audible sounds in the equipment, like pinging, crackling or hissing are indications of scaling or lack of
sufficient water flow. Under these conditions the boiler must be shut down immediately and the heat
exchanger checked for damage. If the exchanger is damaged from scaling, it is not covered by warranty.
Should your equipment be subjected to fire, flood or some other unusual condition, turn off all gas and
electrical supply. if you are unable to turn off the gas , call your gas company or gas supplier at once. Do
not put the unit back in operation until it has been checked by a qualified agency to ensure that all
controls are functioning properly.
Units that are not operated for a period of 60 days or more are considered seasonal operations. It is
recommended that before returning one of these units to service, the proper operation of all controls be
checked by a qualified service technician.
21
LIGHTING INSTRUCTIONS
1) Turn off electric power to boiler.
2) Close main manual valve and main firing valve and wait 5 minutes.
3) Set primary system controller to desired temperature.
4) Open pilot valve.
5) Turn on electric power to boiler. The electrode at the pilot should begin to spark after pre-purge is
complete. The pilot valve will open to permit gas flow to the pilot.
6) There is a 15 second trial for ignition, which is enough time to light the pilot if air is not present in the
pilot line. If pilot fails to light and you suspect air in the line, close the main manual valve and repeat
lighting steps 1 thru 5.
7) Once the pilot lights, it should envelope the ignition rod and ground electrode. The pilot can be
adjusted by removing the pilot regulator cover and turning the adjustment screw counter-clockwise to
decrease it or clockwise to increase it.
8) Open the main manual and main firing valves to allow gas to reach the main burner. If the main
burner fails to ignite, turn the firing valve off and check to see that the pilot is burning. If not, repeat
lighting procedure steps 1 thru 7.
TO TURN OFF BOILER: Close main manual valve and main firing valve and turn off electric power to
system.
