Service manual

41
the level of water in the expansion tank should
not exceed ¼ of the total volume with the
balance filled with air. Start up appliance
following instructions provided. Operate entire
system including pumps and radiation for at
least 1 hour. Check water level in expansion
tank. If level exceeds ½ of tank volume, air is
still trapped in system. Shut down appliance and
continue to run pumps. Within 3 days of start up,
recheck all air vents and expansion tank as
described above.
12.3 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.
13 LIGHTING INSTRUCTIONS
1. Turn off electric power to appliance.
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 appliance. 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
increase it or clockwise to decrease 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 APPLIANCE: Close main
manual valve and main firing valve and turn off
electric power to system.