Installation Manual

26
MAINTENANCE
Proper maintenance is most important to achieve the best
performance from a furnace. Follow these instructions for
years of safe, trouble free operation.
WARNING:
ELECTRICAL SHOCK, FIRE OR
EXPLOSION HAZARD
Failure to follow safety warnings exactly could
result in serious injury or property damage.
Improper servicing could result in dangerous
operation, serious injury, death or property
damage.
• Before servicing, disconnect all electrical
power to furnace.
• When servicing controls, label all wires prior
to disconnecting. Reconnect wires correctly.
• Verify proper operation after servicing.
AVERTISSEMENT :
RISQUE DE DÉCHARGE ÉLECTRIQUE,
D’INCENDIE OU D’EXPLOSION
Le non-respect des avertissements de sécurité pourrait
entraîner un fonctionnement dangereux de l’appareil,
des blessures graves, la mort ou des dommages
matériels.
Un entretien incorrect pourrait entraîner un
fonctionnement dangereux de l’appareil, des blessures
graves, la mort ou des dommages matériels
• Couper toute alimentation électrique au
générateur d’air chaud avant de procéder aux
travaux d’entretien.
• Au moment de l’entretien des commandes,
étiqueter tous les fils avant de les débrancher.
S’assurer de les raccorder correctement.
• S’assurer que l’appareil fonctionne
adéquatement après l’entretien.
• These maintenance instructions are primarily intended
to assist qualified technicians experienced in the proper
maintenance and operation of this appliance.
• Always close the door on the furnace after servicing
or cleaning/changing the filters. Do not operate the
furnace without the door closed.
• Verify the thermostat is properly installed and will not be
affected by drafts or heat from lamps or other appliances.
• To achieve the best performance and minimize
equipment failure it is recommended that a yearly
maintenance checkup be performed. At a minimum,
this check should include the following items:
Air Filter(s)
WARNING:
Never operate the furnace without a filter in place.
Dust and lint can build up on internal components,
resulting in loss of efficiency, equipment damage,
and possible fire.
An air filter is supplied with the furnace as shipped from
the factory. Filters should be changed or cleaned monthly
during the heating season. Newly built or renovated homes
may require more frequent changing until the construction
dust has minimized.
Filters designed to remove smaller particles such as
pollen, may require additional maintenance.
Blower Compartment
Dirt and lint can create excessive loads on the motor
resulting in higher than normal operating temperatures
and shortened service life. It is recommended that the
blower compartment be cleaned of dirt or lint that may
have accumulated in the compartment or on the blower
and motor as part of the annual inspection.
Cleaning of Burners
If the burners must be cleaned, follow steps 1-12. See
Figure 23 (page 28) for component location.
1. Shut off gas supply to the furnace at the meter or at a
manual valve in the supply piping.
2. Turn off all power to the furnace and set the thermostat
to it’s lowest setting.
3. Turn the gas control knob to the OFF position. See
Figure 19 (page 20).
4. Disconnect the wires from the gas valve, igniter, flame
sensor, and flame rollout switch.
CAUTION:
To prevent damage to the unit or internal
components, it is recommended that two
wrenches be used when loosening or tightening
nuts. Do not over tighten!
5. Using two wrenches, separate the ground-joint union
in the gas supply piping at the furnace.
6. Remove the piping between the gas valve and the
ground-joint union. (If applicable).
7. Remove 6 screws securing the burner box door. See
Figure 20 (page 21).
8. Remove 4 screws securing the manifold assembly to
the burner box.
9. Remove 4 screws from the corners of the box and
carefully remove the burner assembly from the furnace.
IMPORTANT NOTE:
DO NOT damage the igniter while removing the burner
assembly.