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Burners
Visually inspect the burner flames periodically during the
heating season. Turn on the furnace at the thermostat and
allow several minutes for flames to stabilize, since any
dislodged dust will alter the flames normal appearance.
Flames should be stable, quiet, soft, and blue (dust may
cause orange tips but they must not be yellow). They
should extend directly outward from the burners without
curling, floating, or lifting off. Flames must not impinge on
the sides of the heat exchanger firing tubes.
Induced Draft and Circulator Blowers
The bearings in the induced draft blower and circulator
blower motors are permanently lubricated by the
manufacturer. No further lubrication is required. Check
motor windings for accumulation of dust which may cause
overheating. Clean as necessary.
Condensate Trap and Drain System
(Qualified Servicer Only)
Annually inspect the drain tubes, drain trap, and field-
supplied drain line for proper condensate drainage. Check
drain system for hose connection tightness, blockage, and
leaks. Clean or repair as necessary.
WARNING
To avoid electrical shock, injury or death,
disconnect electrical power before
performing any maintenance. If you must
handle the igniter, handle with care. Touching
the igniter element with bare fingers, rough
handling or vibration could damage the
igniter resulting in premature failure. Only
a qualified servicer should ever handle the
igniter.
Flame Sensor (Qualified Servicer Only)
Under some conditions, the fuel or air supply can create a
nearly invisible coating on the flame sensor. This coating
acts as an insulator causing a drop in the flame sense
signal. If the flame sense signal drops too low the furnace
will not sense flame and will lock out. The flame sensor
should be carefully cleaned by a qualified servicer using
steel wool.
Flue Passages (Qualified Servicer Only)
The heat exchanger flue passageways should be inspected
at the beginning of each heating season.
BEFORE LEAVING AN INSTALLATION
•
Cycle the furnace with the thermostat at least three
times. Verify cooling and fan only operation.
•
Review the Owner’s Manual with the homeowner and
discuss proper furnace operation and maintenance.
•
Leave literature packet near furnace.
REPAIR AND REPLACEMENT PARTS
•
When ordering any of the listed functional parts, be
sure to provide the furnace model, manufacturing, and
serial numbers with the order.
• Although only functional parts are shown in the parts
list, all sheet metal parts, doors, etc. may be ordered
by description.
•
Parts are available from your distributor.
Functional Parts List:
Auxiliary Limit Switch
Blower Cutoff
Blower Housing
Blower Motor
Blower Mounting Bracket
Blower Wheel
Coil Front Cover
Door Switch
Flame Sensor
Gas Manifold
Gas Valve
Heat Exchanger
Igniter
Induced Draft Blower
Integrated Control Module
Natural Gas Orifice
Pressure Switch
Primary Limit Switch
Propane Gas Orifice
Recuperator Coil
Rollout Limit Switch
Transformer
Содержание *MEC96
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