Installation Guide

54
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 openings on motor housing 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.
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 emery cloth or steel wool. Following cleaning, the
flame sense signal should be as indicated in the Specifications Sheet.
B EFORE L EAVING AN I NSTALLATION
• 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.
R EPAIR AND R EPLACEMENT P ARTS
• 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-
Gas Valve Blower Motor
Gas Manifold Blower Wheel
Natural Gas Orifice Blower Mounting Bracket
Propane Gas Orifice Blower Cutoff
Igniter Blower Housing
Flame Sensor Inductor
Rollout Limit Switch Heat Exchanger with
Primary Limit Switch Recuperator Coil
Auxiliary Limit Switch Coil Front Cover
Pressure Switch Integrated Control Module
Induced Draft Blower Transformer
Door Switch