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Autostage times are either SHORT (8 minutes), LONG
(12 minutes), or OFF, depending on the Jumper (P7)
setting on the furnace control board.
11. When the thermostat demand for heat is satisfi ed,
the control de-energizes the gas valve. The inducer
output remains on for a 30 second post-purge period.
12. The circulating air blower will continue to run for the
selected Blower Off Delay(P5). This may be 60, 90,
or 120 seconds depending on the jumper setting on
the furnace control board.
Cooling Cycle
1. The thermostat calls for cooling by energizing the Y/Y2
or Y1 terminal with 24VAC.
2. The control energizes the blower in the cooling speed
and sends 24VAC to the contactor in the condensing
unit.
3. When the thermostat removes the call for cooling, the
contactor in the outdoor condensing unit is de-energized
and the control continues to run the fan for a period of
60 seconds.
Fan Mode
• When the thermostat energizes the G terminal for
continuous fan (without calling for heat or cooling), the
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.
• The blower will operate at 50% of the selected high
cooling speed for continuous fan operation.
24
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 CHOC 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 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 fi ls avant de les débrancher.
S'assurer de les raccorder correctement.
• S'assurer que l'appareil fonctionne
adéquatement aprés l'entretien.
• These maintenance instructions are primarily intended
to assist qualifi ed technicians experienced in the proper
maintenance and operation of this appliance.
• Always reinstall the doors on the furnace after servicing
or cleaning/changing the fi lters. Do not operate the
furnace without all doors and covers in place.
• Verify that the thermostat is properly installed and is
not being affected by drafts or heat from lamps or other
appliances.
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