GMVC9 GCVC9 Installation Instructions
49
HORIZONTAL UNIT FILTER REMOVAL
Filters in horizontal installations are located in the central return
register or the ductwork near the furnace.
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.
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
T
O
ENSURE
PROPER
UNIT
PERFORMANCE
,
ADHERE
TO
THE
FILTER
SIZES
GIVEN
IN
THE
RECOMMENDED
M
INIMUM
F
ILTER
S
IZE
T
ABLE
OR
S
PECIFICATION
S
HEET
APPLICABLE
TO
YOUR
MODEL
.
CAUTION
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 as indicated in the
Specifications Sheet.
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
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