Carrier 320720-751, 320720-761 User Manual
320720---751 thru ---761
Installation Instructions
NOTE: Read the entire instruction manual before starting the
installation.
SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service,
maintenance, or use can cause explosion, fire, electrical shock, or
other conditions which may cause death, personal injury, or
property damage. Consult a qualified installer, service agency, or
your distributor or branch for information or assistance. The
qualified installer or agency must use factory--authorized kits or
accessories when modifying this product. Refer to the individual
instructions packaged with the kits or accessories when installing.
Follow all safety codes. Wear safety glasses, protective clothing,
and work gloves. Have a fire extinguisher available. Read these
instructions thoroughly and follow all warnings or cautions
include in literature and attached to the unit. Consult local
building codes, the current editions of the National Fuel Gas
Code (NFGC) NFPA 54/ANSI Z223.1 and the National
Electrical Code (NEC) NFPA 70.
In Canada, refer to the current editions of the National Standards
of Canada CAN/CSA--B149.1 and .2 Natural Gas and Propane
Installation Codes, and Canadian Electrical Code CSA C22.1
Recognize safety information. This is the safety--alert symbol
When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury.
Understand the signal words DANGER, WARNING,and
CAUTION. These words are used with the safety--alert symbol.
DANGER identifies the most serious hazards which will result in
severe personal injury or death. WARNING signifies hazards
which could result in personal injury or death. CAUTION is
used to identify unsafe practices which may result in minor
personal injury or product and property damage. NOTE is used
to highlight suggestions which will result in enhanced
installation, reliability, or operation.
!
WARNING
FIRE, EXPLOSION AND ELECTRICAL SHOCK
HAZARD
Failure to follow this warning could result in personal
injury, death and/or property damage.
Before installing or servicing system, always turn off main
electrical and gas supplies to unit and tag with appropriate
lockout. There may be more than one disconnect switch.
.
Primary Cell Inlet Panel Kit
!
CAUTION
CUT HAZARD
Failure to follow this caution may result in personal injury.
Sheet metal parts may have sharp edges or burrs. Use care
and wear appropriate protective clothing, safety glasses and
gloves when handling parts and servicing furnaces.
!
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution may result in improper and
dangerous operation.
Label all wires prior to disconnection when servicing
controls.
INTRODUCTION
This instruction covers installation of the Primary Cell Inlet Panel
Kit Part No. 320720--751, --753, --754, --755, --756, --757, --758,
--760 and --761 in 40--in. (1016 mm) tall, condensing gas
furnaces. See Table 1 for kit usage.
NOTE: A releasing agent such as PAM cooking spray or
equivalent (must not contain corn or canola oil, halogenated
hydrocarbons nor aromatic contents to prevent inadequate seal)
and RTV sealant (G.E. 162, G.E. 6702, or Dow--Corning 738)
are needed before starting installation. DO NOT substitute any
other type of RTV sealant. G.E. 162 (P771--9003) is available
through RCD in 3--oz tubes.
DESCRIPTION AND USAGE
Use this Primary Cell Inlet Panel Kit when replacement of a
factory--installed primary cell inlet panel is required.
This Primary Cell Inlet Panel Kit contains the following items:
Primary Cell Inlet Panel 1
Burner Box Gasket 1
Cell Mounting Screw No. 8D X 3/8--in.(10 mm) 25 max
Installation Instructions 1
1
320720
Table1–KitUsage
340AAV
340MAV
KIT PART
NO.
320720--- 751
320720--- 753
320720--- 754
Prior to S/N
3002A14578
320720--- 755
320720--- 756
320720--- 757
320720--- 758 --- --- --- --- --- --- --- --- 42040 42040 --- --- --- --- --- --- 040--- 14 040---14 --- ---
320720--- 760 60080 60080 60080 --- ---
320720--- 761
After S/N
3002A14577
350AAV
350MAV
353AAV
490AAV
24040
36040
24060
36060
48060
36080
48080
48100
60100
60120
60140
36080
48080
345MAV 351DAS
24040
36040
24060
36060
48060
36080
48080
--- --- --- --- --- --- --- ---
48100
60100
60120 --- --- 60120 60120 60120
36080
48080
--- --- --- --- --- --- --- ---
--- ---
36080
48080
36080
48080
352AAV
352MAV
353BAV
PG9MXA
36060 42060 42060
36080
48080
48100
--- --60100
36080
48080
355MAV
--- --- --- ---
42080
(Series A)
60100 60100
42080
(Series B
and later)
60080
--- --- --- ---
UNIT
355AAV
355BAV
355CAV
PG9UAA
--- --- --- --- --- --- --- --- --- ---
42080
60080
58MCA
58MCB
58MEB
58MXA
58MXB
040--- 08
040--- 12
060--- 08
060--- 12
060--- 16
080--- 12
080--- 16
100--- 16
100--- 20
120--- 20
140--- 20
080--- 20 080---20 --- ---
080--- 12
080--- 16
58MSA
040--- 08
040--- 12
060--- 08
060--- 12
060--- 16
080--- 12
080--- 16
100--- 16
100--- 20
120--- 20 120---20 120--- 20 120---20
080--- 12
080--- 16
58MEC
58MTA
58MTB
060--- 12 060--- 14 060---14
080--- 12
080--- 16
100--- 16
100--- 20
080--- 12
080--- 16
--- --- --- --- --- ---
58MVB
58UVB
58MVC
--- --- --- ---
100--- 20 100---20
080--- 14
080--- 20
--- --- --- ---
58MVP
080--- 14
(Series
100)
080--- 14
(Series
110 and
later)
080--- 20
PG9MAA
PG9MAB
24040
36040
24060
36060
48060
36080
48080
48100
60100
60120
60140
60080
36080
48080
--- ---
INSTALLATION
Remove Whole Cell Panel Assembly
See Fig. 1 and Fig. 2 for furnace component locations. See Fig. 3
for expanded view of heating system components.
NOTE: Actual component locations may vary depending on
model and series.
1. Turn off gas and electrical supplies to furnace.
2. Remove main furnace door.
3. Remove blower access panel.
4. Disconnect field power supply wires from J--box.
5. Remove two screws securing J--box.
6. Remove two screws securing top filler panel and rotate
panel upwards to remove or allow the heat exchanger to
be removed from front of furnace.
7. Disconnect combustion--air intake pipe from intake housing and move pipe out of furnace casing.
8. Disconnect gas supply pipe from gas valve using backup
wrench.
9. Disconnect vent pipe from inducer housing by loosening
coupling clamp on inducer outlet. If coupling has 2
clamps, loosen clamp on vent pipe side. Move pipe out of
furnace casing.
10. If control center is located in burner compartment of furnace, remove blower motor leads, transformer wires, door
switch wires, and auxiliary limit switch wires (if present)
from control center and pull wires through blower shelf.
11. If control center is located in blower compartment of furnace, disconnect wires from flame sensor, hot surface igniter, overtemperature switch, gas valve, pressure
switch(es), inducer motor, limit switch, and J--box, then
pull wires through blower shelf.
12. Remove two screws securing blower to blower shelf (four
screws on 120 and 140 sizes).
13. Remove two screws next to blower mounting screws that
secure blower shelf to cell panel.
14. Remove three screws from each side of cell panel.
15. If control center is located in burner compartment of furnace, remove control center by removing screw and pressing tabs inward.
16. If control center was removed from furnace casing, secure
control center (and J--box) to manifold for removal purposes only.
17. Disconnect field drain connection from condensate trap.
18. Disconnect drain and relief port tube from condensate trap.
19. Remove condensate trap from furnace casing or blower
shelf.
20. Remove whole cell panel assembly with heat exchanger,
burner box, inducer assembly, J--box (if applicable), and
control center (if applicable) attached through front of furnace.
!
CAUTION
PERSONAL INJURY HAZARD
Failure to follow this caution may result in personal injury.
Whole cell panel assembly is heavy. Get help to remove and
lift assembly.
Remove Burner Box Assembly
1. If not previously disconnected, disconnect wires or connectors to overtemperature switch, gas valve, igniter, and
flame sensor.
2. Remove pressure switch tube from intake housing.
3. Remove two screws attaching intake housing to burner
box, and rotate intake housing away from burner box for
removal.
4. Disconnect pressure tubing from gas valve.
5. Remove screws attaching burner box to cell panel.
NOTE: Burner box cover, manifold, gas valve, and burner
assembly should be removed as one assembly.
2
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