Goodman GCV9 Series, Руководство по установке, Страница: 35 / 40

35
C
ONDENSATE
T
RAP AND
D
RAIN
S
YSTEM
(Q
UALIFIED
S
ERVICER
O
NLY
)
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 nec-
essary.
F
LAME
S
ENSOR
(Q
UALIFIED
S
ERVICER
O
NLY
)
Under some conditions, the fuel or air supply can create a nearly
invisible coating on the flame sensor. This coating acts as an insu-
lator 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.
F
LUE
P
ASSAGES
(Q
UALIFIED
S
ERVICER
O
NLY
)
The heat exchanger flue passageways should be inspected at the
beginning of each heating season. If necessary, clean the pas-
sageways as outlined below.
1. Turn OFF the electrical power and gas supply to the furnace.
2. Disconnect the gas line and remove the burner/ manifold
assembly by removing the screws securing the assembly to
the partition panel.
3. Disconnect the flue pipe system from the induced draft blower.
4. Remove the induced draft blower and, drain and pressure
tap hoses from the recuperator coil front cover.
5. Remove the recuperator coil front cover to expose the coil
tubes and turbulators.
6. Remove the recuperator coil turbulators individually by slowly
pulling each turbulator forward firmly.
7. Clean the recuperator coil tubes using a long handle wire
brush, such as a gun cleaning brush.
8. Clean the primary heat exchanger tubes using a wire brush
attached to a length of high grade stainless steel cable, such
as drain cleanout cable. Attach a variable speed reversible
drill to the other end of the cable. Slowly rotate the cable
with the drill and insert it into one of the heat exchanger
tubes. While reversing the drill, work the cable in and out
several times to obtain sufficient cleaning. Repeat for each
tube.
9. Clean residue from furnace using a vacuum cleaner.
10. Replace the parts removed in the previous steps in reverse
order.
11. Turn on electrical power and gas to furnace. Check for leaks
and proper unit operation.
12. Severe heat exchanger fouling is an indication of an
operational problem. Perform the checks listed in Section
XIV, Startup Procedure and Adjustments to reduce the
chances of repeated fouling.
XX. INTERNAL FILTER REMOVAL
Internal filters are an accessory item and are not included with your
furnace. For further details, see your distributor.
B
OTTOM
R
ETURN
R
EMOVAL
1. Turn OFF electrical power to furnace.
2. Remove blower compartment door.
3. Push back and up on the wire filter retainer to release it from
under the front lip of the furnace basepan.
4. Slide filter forward and out.
5. Replace filter by reversing the procedure.
B
LOWER
C
OMPARTMENT
R
EMOVAL
1. Turn OFF electrical power to furnace.
2. Remove blower compartment door.
3. Grasp lower portion of filter and lift up.
Front of Furnace
Blower
Grab Here
And Lift
F
ilt
e
r
Front of Furnace
Blower
4. Angle filter toward the blower until filter clears bottom rail.
5. Lower filter down and pull outward.
Front of Furnace
Blower
Front of Furnace
Blower
6. Replace filter by reversing procedure.
XXI. 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.
XXII. REPAIR & 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-
Gas Valve Blower Motor
Gas Manifold Blower Wheel
Natural Gas Orifice Blower Mounting Bracket
Propane Gas Orifice Blower Cutoff
Igniter Blower Housing
Flame Sensor Capacitor
Rollout Limit Switch Heat Exchanger
Primary Limit Switch Recuperator Coil
Auxiliary Limit Switch Coil Front Cover
Pressure Switch Integrated Control Module
Induced Draft Blower Transformer
Door Switch