Install Instructions

59
Maintenance Procedures
Check Combustion Levels
Refer to page 37 of this manual for measuring
combustion levels and burner adjustments.
Clean Boiler Heat Exchanger
1. Shut down the appliance:
- Follow the instructions on Page 38 "To
Turn Off Gas to Appliance"
- Do not drain the appliance unless it will
be subject to freezing conditions.
- Do not drain the appliance if freeze
protection fluid is used in the system.
2. Allow the appliance to cool down to room
temperature before servicing.
3. Disconnect the gas piping and electrical
connector to the gas valve.
4. Disconnect the wiring harness connectors
from the blower.
5. Remove the mounting bolts and washers
securing the front of the heat exchanger
and set aside.
6. Carefully remove the front plate of the heat
exchanger. Ensure combustion chamber
insulation is not damaged during removal.
See WARNING on page 60.
7. Use a vacuum cleaner, compressed air or
water to remove any accumulation from
the heat exchanger flue ways. Do not use
any solvent.
8. Re-assemble the front plate of the heat
exchanger onto the heat exchanger. Ensure
the gasket and combustion chamber insula-
tion is in place and not damaged, replace
gasket and insulation if necessary. See
WARNING on page 60.
9. Re-assemble the blower the wiring harness.
10. Reconnect the gas piping and electrical
connector to gas valve. Check for leaks,
repair if necessary.
11. Close isolation valves at the appliance boil-
er piping to isolate the appliance from the
heating system.
12. Attach a hose to the boiler drain valve and
flush the boiler thoroughly with fresh
water by using the purge valves to allow
water to enter through the make-up water
line to the boiler.
13. Once the boiler has been completely
flushed, return the boiler and system pip-
ing back to operation.
14. Perform the required startup and checkout
procedures as outlined on pages 33 to 50.
Review With Owner
Ensure the owner understands the impor-
tance to perform the maintenance schedule
specified in this manual.
Remind the owner of the importance to call
a licensed contractor should the appliance or
system exhibit any unusual behavior.