GMES96-U Installation Manual

33
To remove:
1. Turn OFF electrical power to furnace.
2. Remove filter(s) from the central return register or
ductwork.
3. Replace filter(s) by reversing the procedure for removal.
4. Turn ON electrical power to furnace.
MEDIA AIR FILTER OR ELECTRONIC AIR CLEANER REMOVAL
Follow the manufacturer’s directions for service.
BURNER
T O PREVENT PERSONAL INJURY OR DEATH , DO NOT REMOVE ANY
INTERNAL COMPARTMENT COVERS OR ATTEMPT ANY ADJUSTMENT .
E
LECTRICAL COMPONENTS ARE CONTAINED IN BOTH COMPARTMENTS .
C
ONTACT A QUALIFIED SERVICE AGENT AT ONCE IF AN ABNORMAL
FLAME APPEARANCE SHOULD DEVELOP .
WARNING
The Ultra Low NOx furnace uses a premix burner. The burner
box is sealed to achieve safe and reliable operation.
SCREW
SENSOR
GASKET
IGNITOR
GASKET
LIMIT
GASKET
BURNER BOX
Burner Box
Figure 36
NOTE: Location of flame sensor, igniter and burner limit
switch may vary depending on the model.
INDUCED DRAFT AND CIRCULATOR BLOWERS
The bearings in the induced draft blower and circulator blower
motors are permanently lubricated by the manufacturer. No fur-
ther lubrication is required. Check motor windings for accumu-
lation 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 above 3 micro amps.
FLUE PASSAGES (QUALIFIED SERVICER ONLY)
The heat exchanger flue passageways should be inspected at the
beginning of each heating season.
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
Igniter Blower Cutoff
Flame Sensor Blower Housing
Burner Temperature Switch Pressure Switches
Primary Limit Switch Burner Assembly
Coil Front Cover Drain Trap
Auxiliary Limit Switch Burner Box Gasket
Transformer Integrated Control Module
Door Switch Pressure Sensor
Induced Draft Blower
Heat Exchanger with Recuperator Coil