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indoor fan is energized on the selected FAN speed.
blower will switch over to the selected COOL speed.
W terminal receives a call for heat during continuous
fan, the blower will de energize.
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:
HAZARD
AVERTISSEMENT:
32
to assist qualified technicians experienced in the proper
maintenance and operation of this appliance.
or cleaning/changing the filters.
affected by drafts or heat from lamps or other appliances.
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) 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:
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.
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.
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:
or
Figure
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