2
!
WARNING
ELECTRICAL SHOCK, FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in personal injury,
death or property damage.
Before installing, modifying, or servicing system, main electrical
disconnect switch must be in the OFF position and install a
lockout tag. There may be more than one disconnect switch.
Lock out and tag switch with a suitable warning label. Verify
proper operation after servicing.
!
CAUTION
UNIT OPERATION HAZARD
Failure to follow this caution may result in unit damage or
improper operation.
Do NOT use this kit with furnaces with an input of 26,000
BTUH; the unit will be severely over
−
fired. This could result in
flame roll
−
out, sooting or premature heat exchanger failure.
This instruction covers the installation of gas conversion to
convert the following furnaces from Propane gas usage to natural
gas usage. See appropriate section for your furnace type.
Section 1
−
Models 59SC2, 59SP2, 59SC5, 59SE5, 59SP5,
912S, 915S, 922S, 925S, and PG92S are 4
−
Way Multipoise, Hot
Surface Ignition, Condensing Furnaces with 40,000 to 120,000
btuh gas input rates. Models 59SC5, 915S, and PG95S are
4
−
Way Multipoise, Hot Surface Ignition, Condensing Furnaces
with 40,000 to 140,000 btuh gas input rates.
Section 2
−
Models 58DL, 58PH, 58ST, 310A, 310J, 311A, 311J,
313A, 313J, PG8MA, PG8JA, PG8ME, and PG8JE 33.3
−
Inch
High, Induced
−
Combustion, Hot
−
Surface Ignition, Single
−
Stage,
Non
−
Condensing 4
−
Way Multipoise Furnaces with 42,000 to
154,000 btuh gas input rates.
DESCRIPTION AND USAGE
See
for kit contents. This kit is designed for use in the
furnaces listed in
. To accommodate many
different furnace models, more parts are shipped in kit than will
be needed to complete conversion. When installation is
complete, discard extra parts.
Table 1
NAHD00901NG Contents
COMPONENT
NUMBER
QTY
DESCRIPTION
EF39ZW037
1
VALVE CVRSN KIT W/R SPRING 920935
323267-701
1
PARTS ASSY #42
323267-702
1
PARTS ASSY #43
323267-703
1
PARTS ASSY #44
323267-704
1
PARTS ASSY #45
339851-701
1
LABEL KIT
339851-702
1
LABEL KIT
319965-448
1
LABEL,SHIPPING
AG-KGBPN1SP-XX
1
INSTR GAS CVRSN LP TO NAT
CA64AS001
1
PLUG, PIPE
SECTION 1
CONDENSING FURNACES
Table 2
MODEL NUMBERS BEGINNING WITH:
59SC2
59SC5
59SE5
59SP2
59SP5
912S
915S
922S
925S
PG92S
PG95S
* Except 26,000 BTUH models.
INSTALLATION
1. Set room thermostat to lowest setting or “OFF”
2. Disconnect power at external disconnect, fuse or circuit
breaker.
3. Turn off gas at external shut
−
off or gas meter.
4. Remove outer doors and set aside.
5. Turn electric switch on gas valve to OFF.
MANIFOLD/ORIFICE/BURNER
REMOVAL
!
CAUTION
UNIT OPERATION HAZARD
Failure to follow this caution may result in unit damage or
improper operation.
Label all wires prior to disconnection when servicing controls.
!
PRUDENCE
D’EQUIPEMENT D’OPERATION
Toute erreur de câblage peut être une source de danger et de
panne.
Lors des opérations d’entretien des commandes, étiqueter tous
les fils avant de les déconnecter.
Figure 1
Representative Furnace Drawing
REPRESENTATIVE DRAWING ONLY, SOME MODELS MAY VARY IN APPEARANCE.
A170154
RATING PLATE NOT SHOWN
(LOCATED ON BLOWER DOOR)
GAS VALVE
MAIN LIMIT SWITCH
(BEHIND GAS VALVE)
REPRESENTATIVE DRAWING ONLY, SOME MODELS MAY VARY IN APPEARANCE.
ELECTRICAL JUNCTION
BOX (IF REQUIRED,
LOCATION MAY VARY)
MEDIA CABINET
OPERATING INSTRUCTIONS
NOT SHOWN (LOCATED ON
MAIN FURNACE DOOR, SEE
OPERATING INSTRUCTIONS
INSIDE DOOR FIGURE).
FURNACE
CONTROL
BOARD
MANUAL RESET
ROLLOUT SWITCH
FLAME
SENSOR
MANUAL RESET
ROLLOUT SWITCH
GAS BURNER
HOT SURFACE
IGNITER
INDUCER MOTOR
ASSEMBLY
BLOWER AND
MOTOR
CAPACITOR/
POWER CHOKE
(IF USED)
BLOWER DOOR
SAFETY SWITCH
1. Disconnect the gas pipe from gas valve and remove pipe
.
Use a back
−
up wrench on the gas valve to prevent the valve
from rotating on the manifold or damaging the mounting to the
burner box. See