Maintenance - Nordyne SC Installation Instructions Manual

indoor fan is energized on the selected FAN speed.
• If a call for cooling occurs during continuous fan, the
blower will switch over to the selected COOL speed.
• If the W terminal receives a call for heat during continuous
fan, the blower will de energize.
• A call for fan is ignored while in lockout.

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:
RISQUEDECHOCÉLECTRIQUE,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 entretein 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 prodéder
aux travaux d'entretein.
• Au moment de l'entretien des commandes,
étiquetez tous les fils avant de les débrancher.
S'assurer de les raccorder correctement.
• S'assurer que l'appareil fonctionne
adéquatement aprés l'entretien.
32
• These maintenance instructions are primarily intended
to assist qualified technicians experienced in the proper
maintenance and operation of this appliance.
• Always reinstall the doors on the furnace after servicing
or cleaning/changing the filters. Do not operate the
furnace without all doors and covers in place.
• 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) - Air filter(s) are not supplied with the furnace
as shipped from the factory. The installer must provide a
high velocity filter that is appropriately sized to the return
air duct opening or external filter rack.
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.
It is recommended that filter(s) be 1" or 2" thick and be
cleaned or replaced monthly. New or newly 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. Filters for
side return and bottom return applications are available
from most local distributors.
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 43 (page 54)
44 (page 55) 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. Remove the burner door from the furnace.
4. Turn the gas control switch to the OFF position.
5. 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!
or Figure