Carrier AGAGC9NPS01C User manual

Installation Instructions
NOTE: Read the entire instruction manual before starting the
installation.
A200203
SAFETY CONSIDERATION
Installing and servicing heating equipment can be hazardous due to gas
and electrical components. Only trained and qualified personnel should
install, repair, or service heating equipment.
Untrained personnel can perform basic maintenance functions such as
cleaning and replacing air filters. Trained service personnel must
perform all other operations. When working on heating equipment,
observe precautions in the literature, on tags, and on labels attached to or
shipped with the unit, and other safety precautions that may apply.
Follow all safety codes. In the United States, follow all safety codes
including the current edition of the National Fuel Gas Code (NFGC)
NFPA No. 54/ANSI Z223.1. In Canada, refer to the current edition of the
National Standard of Canada, Natural Gas and Propane Installation
Codes (NSCNGPIC), CAN/CSA-B149.1 and .2. Wear safety glasses and
work gloves. Have a fire extinguisher available during start-up,
adjustment steps, and service calls.
Recognize safety information. This is the safety-alert symbol . When
you see this symbol on the furnace and in instructions or manuals, be
alert to the potential for personal injury. Understand the signal words
DANGER, WARNING, CAUTION and NOTE. The words DANGER,
WARNING, and CAUTION are used with the safety alert symbol.
DANGER identifies the most serious hazards which will result in severe
personal injury or death. WARNING signifies a hazard 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.
INTRODUCTION
AGAGC9NPS01C
Gas Conversion Kit, Natural to Propane
Condensing (90%+) Furnaces
40,000 BTUH to 140,000 BTUH Models Only
WARNING
!
FIRE, EXPLOSION, ELECTRICAL SHOCK, AND
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in personal injury or death.
This conversion kit shall be installed by a qualified service agency in
accordance with the manufacturer’s instructions and all applicable
codes and requirements of the authority having jurisdiction. If the
information in these instructions is not followed exactly, a fire,
explosion, or production of carbon monoxide could result causing
property damage, personal injury, or loss of life. The qualified service
agency is responsible for the proper installation of this furnace with this
kit. The installation is not proper and complete until the operation of the
converted appliance is checked as specified in the manufacturer’s
instructions supplied with the kit
AVERTISSEMENT
!
LE FEU, L’EXPLOSION, CHOC ELECTRIQUE,
ET MONOXYDE DE CARBONE EMPOISONNER
Cette trousse de conversion doit être installée par un servie d’entretien
qualifié, selon les instructions du fabricant et selon toutes les exigences
et tous les codes pertinents de l’autorité compétente. Assurezvous de
bien suivre les instructions dans cette notice pour réduire au minimum
le risque d’incendie, d’explosion ou la production de monoxyde de
carbone pouvant causer des dommages matériels, de blessure ou la
mort. Le service d’entretien qualifié est responsable de l’installation de
cette trousse. L’installation n’est pas adéquate ni complète tant que le
bon fonctionnement de l’appereil converti n’a pas été vérfié selon les
instructions du fabricant fornies avec la trousse.
WARNING
!
FIRE, EXPLOSION, ELECTRICAL SHOCK AND
CARBON MONOXIDE POISONING HAZARD
Failure to follow instructions could result in personal injury, death or
property damage.
Improper installation, adjustment, alteration, service, maintenance, or
use can cause carbon monoxide poisoning, explosion, fire, electrical
shock, or other conditions, which could result in personal injury or
death. Consult your distributor or branch for information or assistance.
The qualified installer or agency must use only factory-authorized kits
or accessories when servicing this product.
WARNING
!
FIRE, EXPLOSION, ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury, death or
property damage.
Gas supply MUST be shut off before disconnecting electrical power
and proceeding with conversion.

AGAGC9NPS01C Gas Conversion Kit, Natural to Propane: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
2
This instruction covers the installation of gas conversion kit to convert
the following furnaces from natural gas usage to propane gas usage.
NOTE: See appropriate sections for your furnace type.
SINGLE-STAGE GAS VALVE
Condensing Furnaces with 40,000 to 140,000 BTUH (not all models
have 140,000 BTUH) gas input rates and a.) Single-Stage, 4-Way
Multipoise, Hot Surface Ignition with PSC blower motor or b.)
Single-Stage gas valve with Fixed-Speeds Constant Torque ECM (FCT)
blower motor.
TWO-STAGE & MODULATING GAS VALVE
Condensing Furnaces with 40,000 through 120,000 BTUh gas input rate
and a.) Modulating gas valve with Variable-Speed Constant Airflow
ECM (VCA), b.) Two-Stage gas valve with Variable-Speed Constant
Airflow ECM (VCA), or c.) Two-Stage gas valve with Variable-Speed
Constant Torque ECM (VCT) blower motor.
Table 1 – Kit Contents
DESCRIPTION AND USAGE
This kit is designed for use in the furnaces listed in Table 2 or Table 3,
see Table 1 for kit contents. 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 2 – SINGLE-STAGE
CONDENSING FURNACES
For 40K through 140K models only.
Table 3 – TWO-STAGE & MODULATING CONDENSING
FURNACES
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.
A190014
Representative drawing only, some models may vary in appearance.
Fig. 1 – Representative Furnace Drawing
MANIFOLD/ORIFICE/BURNER REMOVAL
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 delayed ignition,
sooting or premature heat exchanger failure.
QUANTITY DESCRIPTION
2 VALVE CVRSN KIT - W/R SPRING 92-0659
1 JUMPER PLUG
7 ORIFICE - 1.25mm
7 MIXER SCREW - CONDENSING FURNACES
1 CONNECTOR - BRASS 1/8” NPT X2”
1 CONNECTOR - 1/4QC ME BOTH ENDS
1 ELBOW,STREET - 150# 1/8” NPT
1 ELBOW,STREET - BRASS 1/8” NPT
1 NIPPLE - HEX (BRASS)
1 SWITCH,PRESSURE
1 TEE - MALE BRANCH (BRASS)
1 TEE, STREET - MALE BRANCH (BRASS)
1 BIT, DRILL 7/64” CONDENSING
1 WIRE ASSY - ORANGE
1 WIRE ASSY - ORANGE
1 LABELS 347786-201 through 347786-209
1 INSTRUCTIONS
Model Numbers Beginning with:
59S(P/C/E) 91(2/5/6)S 92(2/5/6)S
PG9(2/5)S PG9(2/6)M PG9(2/5)ESA
(F/G)9MXE F9MES (N/R)9MS
(N/R)95ESN (N/R)92ESN (N/R)96MS
(N/R)92MS (N/R)96VS WF(A/H/S)X
Model Numbers Beginning with:
59T(N/P) 986T 92(5/6)T
(G/P)G96V PG95X (F/G)9MV
(F/G)9MXT (F/G/N)96CTN (F/G/N)96V
59MN 987M (F/G)9MA
(F/G/N)97C
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.

AGAGC9NPS01C Gas Conversion Kit, Natural to Propane: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
3
NOTE: 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.
1. Disconnect the gas pipe from gas valve and remove pipe from the
furnace casing (see Fig. 1)
2. Disconnect the connector harness from gas valve Disconnect wires
from Hot Surface Igniter (HSI) and Flame Sensor.
3. Support the manifold and remove the four (4) screws that secure the
manifold assembly to the burner box and set aside.
4. Note the location of the green/yellow wire ground wire for
re-assembly later (see Fig. 2)
5. Remove wires from both rollout switches (see Fig. 3)
6. Slide one-piece burner assembly out of slots on sides of burner box
(see Fig. 3)
7. Remove the flame sensor from the burner assembly.
8. Remove the orifices from the manifold and discard.
A11407
Fig. 2 – Manifold Assembly
A11403
Fig. 3 – Burner Assembly
ORIFICE SELECTION/DERATE
A96249
Fig. 4 – Burner Orifice
Refer to conversion kit rating plate 347786-201 to determine main
burner orifice size (see Fig. 5)
Furnace gas input rate on furnace rating plate is for installations at
altitudes up to 2000 ft. (610 M).
In the U.S.A.; the input rating for altitudes above 2000 ft. (610 M) must
be reduced by 2 percent for each 1000 ft. (305 M) above sea level.
In Canada, the input rating must be derated by 5 percent for altitudes of
2000 ft. to 4500 ft. (610 M to 1372 M) above sea level.
The Conversion Kit Rating Plate accounts for high altitude derate.
SINGLE-STAGE GAS VALVE
A210147
ATTENTION
!
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.
Orifice
Connect Green/Yellow
ground wire here
Manifold
Gas Valve
Gas valve must be installed on
manifold with minimum engagement of
6 threads. Cross threading is not
acceptable.
Indicated surfaces
to be 90 ˚+ or -2˚
C
L
Gas valve is parallel to manifold
within + or - 3˚
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in unit damage.
DO NOT re-drill burner orifices. Improper drilling may result in burrs,
out-of-round holes, etc. Obtain new orifices if orifice size must be
changed (see Fig. 4)
FLAME SENSOR
(BELOW BURNER)
FLAME ROLLOUT
SWITCH
BRACKET, IGNITER
IGNITER
BURNER SUPT. ASSY
BURNER ASSY
BURNER
ORIFICE BURNER
ORIFICE

AGAGC9NPS01C Gas Conversion Kit, Natural to Propane: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
4
A210147FR
TWO-STAGE GAS VALVE
A210141
A210141FR
MODULATING GAS VALVE
A210145

AGAGC9NPS01C Gas Conversion Kit, Natural to Propane: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
5
A210145FR
Fig. 5 – Conversion Kit Rating Plate (40,000 BTUH to 140,000 BTUH ONLY)
INSTALL ORIFICES
1. Install main burner orifices. Do not use PTFE thread-seal tape.
Finger-tighten orifices at least one full turn to prevent
cross-threading, then tighten with wrench.
2. There are enough orifices in each kit for largest furnace. Discard
extra orifices.
NOTE: DO NOT reinstall the manifold at this time.
INSTALL MIXER SCREWS
NOTE: “REQUIRED FOR THE CONVERSION OF CONDENSING
GAS FURNACES TO PROPANE GAS”
1. See Fig. 6 to verify you have the correct set of mixer screws.
2. Locate the dimple on each burner venturi tube.
3. If you cannot locate the dimple, refer to Fig. 7 for location of the
mixer screw.
4. Drill a 7/64-in (2.8 mm) hole (supplied in kit) in each dimple.
5. Install a mixer screw in each drilled hole drilling as straight as
possible (i.e. in the center of the gas flow stream as well as
perpendicular to the gas flow stream).
6. The screw head should be flush with the top of the burner venturi.
A11294
Fig. 6 – Gas Conversion Kit
A11460
Fig. 7 – Mixer Screw Location
REINSTALL BURNER ASSEMBLY
To reinstall burner assembly:
1. Attach flame sensor to burner assembly.
2. Insert one-piece burner in slot on sides of burner box and slide
burner back in place.
3. Reattach HSI wires to HSI.
4. Verify igniter to burner alignment (see Fig. 8 & Fig. 9)
A11405
Fig. 8 – Igniter Position - Back View
A12392
Fig. 9 – Igniter Position - Side View
1.9”
(48.76 mm)
1.8”
(46.96 mm)
Drill out with
7/64” drill bit
2-1/2-in.
(64.4)
1-1/4-in.
(31.8)
2−in.
(2.5 mm
3/8 − in.
3/16− in.
, +0.8 -1.5)
(50 mm)
(9.6 mm)
(4.6 mm)
3/32− in., +1/32 -3/64-in.

AGAGC9NPS01C Gas Conversion Kit, Natural to Propane: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
6
CONVERT GAS VALVE
NOTE: Do not use this kit if the gas valve in Fig. 10 or Fig. 11 has a
green label on top of the valve. The green label on the gas valve is a
special low capacity gas valve. Refer to Specification Sheet for the
correct conversion kit.
Single Stage Gas Valve
1. Refer to Fig. 10 and Fig. 11. Verify the gas valve has a white label
with black lettering on top of the operator.
2. Be sure gas and electrical supplies to furnace are off.
3. Remove caps that conceal adjustment screws for the gas-valve
regulators (see Fig. 10 and Fig. 11)
4. Remove the regulator adjustment screw.
5. Remove the regulator springs (silver).
6. Install the propane gas regulator springs (white).
7. Install the regulator adjustment screws.
8. Turn the adjusting screw clockwise (in) 8.5 full turns. This will
increase the manifold pressure closer to the propane set point (see
Fig. 10 and Fig. 11)
9. Do not install regulator seal caps at this time.
NOTE: If there is a GREEN LABEL on gas valve, ensure the correct
conversion kit is ordered for the 26K BTUH models.
NOTE: Remove the natural gas regulator spring (silver)
Install the propane regulator spring (white)
A13048
Fig. 10 – Gas Valve (Single Stage) without Tower Pressure Ports
A170118B
A170133
Fig. 11 – Gas Valve (Single Stage) with Tower Pressure Ports
CAUTION
!
UNIT OPERATION HAZARD
Failure to follow this caution may result in unit damage or improper
operation.
Do NOT use this kit if the gas valve has a green label (26,000 BTUH
model) on it shown in Fig. 10 or Fig. 11. The 26,000 BTUH model
uses a different conversion kit available from your distributor.
The 26,000 BTUH model uses a different conversion kit. Refer to
Product Specification for the correct conversion kit, available from
your distributor.
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in unit damage
The gas valve must be converted and pre-adjusted before operating on
propane gas. If not converted and pre-adjusted, sooting and corrosion
will occur leading to early heat exchanger failure.
WARNING
!
FIRE, EXPLOSION, ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury, death or
property damage.
Gas supply MUST be shut off before disconnecting electrical power
and proceeding with conversion.
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.
ON/OFF Switch
Regulator Seal Cap
Regulator Adjustment under
Regulator Seal Cap
1/2”NPT Outlet
1/8”NPT Manifold
Pressure Tap
1/8”NPT Inlet
Pressure Tap
1/2”NPT Inlet
SINGLE-STAGE
Regulator Spring
Propane - White 8.5 turns
Natural Gas - Silver 8.5 turns
Regulator Adjustment
Screw
Regulator Seal Cap
LP/NAT

AGAGC9NPS01C Gas Conversion Kit, Natural to Propane: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
7
Two Stage Gas Valve
Refer to Fig. 12 and Fig. 13.
A11472
Fig. 12 – Automatic Gas Valve (Two-Stage) without Tower Pressure
Ports
A170117
A170132
Fig. 13 – Automatic Gas Valve (Two-Stage) with Tower Pressure
Ports
1. Remove caps that conceal adjustment screws for high heat and low
heat gas-valve regulators (see Fig. 12 and Fig. 13)
2. Remove the high heat and low heat regulator adjustment screws.
3. Remove the high heat and low heat regulator springs (silver).
4. Install the high heat and low heat propane gas regulator springs
(white).
5. Install the high heat and low heat regulator adjustment screws.
6. Turn high heat stage adjusting screw clockwise (in) 13.5 full turns.
This will increase the manifold pressure closer to the propane set
point.
7. Turn low heat stage adjusting screw clockwise (in) 9.5 full turns.
This will increase the manifold pressure closer to the propane low
heat set point.
8. Do not install regulator seal caps at this time.
Modulating Gas Valve
Refer to Fig. 14 through Fig. 16.
A11373
Fig. 14 – Propane Jumper
A11375
Fig. 15 – Installing Propane Jumper
NOTE: The Propane jumper for the modulating gas valve is very small.
Needle-nose pliers are required to insert the jumper into the valve. If the
jumper is not installed, the valve will not operate properly on propane.
1. Locate the round “NAT GAS” sticker on the top of the gas valve.
2. Peel the sticker off and discard.
3. Note the small square opening in the top of the gas valve.
4. Note the two jumper pins inside the modulating gas valve.
5. Remove the small black plastic propane jumper from the envelope.
6. Use needle-nosed pliers to hold the jumper by the tab on the end.
7. Insert the jumper on the pins inside the gas valve.
8. Cover the opening in the gas valve with the label marked “LP
GAS”
A10496
ON/OFF SwitchON/OFF Switch
1/2” NPT Outlet1/2” NPT Outlet
1/8” NPT Manifold1/8” NPT Manifold
Pressure TapPressure Tap
1/8” NPT Inlet1/8” NPT Inlet
Pressure TapPressure Tap
TWO-STAGETWO-STAGE Regulator Seal CapRegulator Seal Cap
Regulator AdjustmentRegulator Adjustment
ScrewScrew
Regulator SpringRegulator Spring
1/2” NPT Inlet
INLET PRESSURE TAP
SET SCREW: 3/32” HEX HEAD
ACCEPTS 5/16” HOSE
CONNECTION
ON/OFF SWITCH
MANIFOLD PRESSURE TAP SET SCREW:
3/32” HEX HEAD ACCEPTS
5/16” HOSE CONNECTION
REGULATOR SEAL CAP
(REGULAR ADJ. UNDER CAP)
OUTP
1/2” NPT
INLET
1/2” NPT
OUTLET
Representative drawing only, some models may vary in appearance.
1/8” NPT
INLET
PRESSURE
TAP
INP
1/2” NPT
INLET 1/2” NPT
OUTLET
Representative drawing only, some models may vary in appearance.
ON/OFF Switch
1/2”NPT Outlet
Manifold
Pressure Tap
Inlet
Pressure Tap
Min/Max Heat Adust
(Under Cap)
GAS FLOW
MODULATING
Turn screw 1 click per
second to adjust rate.
Clockwise to increase
rate, counter clockwise
to decrease rate.

AGAGC9NPS01C Gas Conversion Kit, Natural to Propane: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
8
A170116
A170131
Fig. 16 – Automatic Control Valve (Modulating) without Tower
Pressure Ports
INSTALL LOW GAS PRESSURE SWITCH
NOTE: Install the Low Gas Pressure Switch before installing the
manifold on the burner assembly.
There are two ways to mount the Low Gas Pressure Switch.
All 14 3/16-in Casings or Vent Passed Between Inducer Assembly and
Burner Assembly
If the vent pipe passes between the inducer and burner assembly, or the
furnace is a 14 3/16-in. wide casing. The switch may be installed as
shown in Fig. 17:
A170141
Fig. 17 – LGPS for 14-3/16 Casing or when vent passes between
inducer and burner assembly
1. Remove the 1/8-in. (3 mm) NPT pipe plug from the gas valve inlet
pressure tap.
NOTE: Use pipe dope approved for use with Propane Gas.
NOTE: Tighten all fittings and the Low Gas Pressure Switch with a
small wrench. Do not over-tighten, check for gas leaks after gas supply
has been turned on.
2. Apply pipe dope sparingly to the male threads of the 1/8-in. (3 mm)
black iron street elbow. Install the street elbow into the gas valve
inlet pressure tap. One end of the opening of the street elbow should
be parallel with the inlet boss on the gas valve. The other opening
should be pointing toward you.
3. Apply pipe dope sparingly to the male threads of the 1/8-in. (3 mm)
brass street tee. Install the male end of the street tee as shown in
Fig. 17. One opening on the street tee should face you. The other
opening should be parallel with the inlet of the gas valve.
4. Apply pipe dope sparingly to the male threads of the 1/8-in. (3 mm)
brass hex nipple. Install the hex nipple into the open end of the
brass street tee (see Fig. 17) The hex nipple should be parallel with
the boss on the gas valve.
5. Install the open end of the brass street elbow on the end of the hex
nipple. Tighten the street elbow so the male threads of the elbow
point away from you.
6. Apply pipe dope sparingly to the male threads of the 1/8-in. (3 mm)
brass street elbow. Install the Low Gas Pressure Switch on the male
threads of the 1/8-in. (3 mm) street elbow. Tighten switch at hex
fitting at base of switch. Do not use switch body to tighten switch.
Do not over-tighten switch.
7. The remaining opening on the brass street tee is the new gas valve
inlet pressure tap (optional on some models). Apply pipe dope to
inlet pressure plug from gas valve and install in open end of brass
street tee.
8. Check all fittings for leaks after gas supply has been turned on.
Casings Wider Than 14 3/16-in/Vent Does Not Pass Between Inducer
and Burner Assembly
If the vent pipe does not pass between the inducer and burner assembly,
or the furnace is wider than a 14 3/16-in. wide casing. The switch may be
installed as shown in Fig. 18):
OUTP
ON/OFF SWITCH
MANIFOLD PRESSURE TAP
SET SCREW: 3/32” HEX HEAD
ACCEPTS 5/16” HOSE
CONNECTION
1/2” NPT
INLET
1/2” NPT
OUTLET
INLET PRESSURE TAP
SET SCREW:
3/32” HEX HEAD
ACCEPTS 5/16” HOSE
CONNECTION
MIN/MAX HEAT
ADJUST (UNDER CAP)
Representative drawing only, some models may vary in appearance.
1/2” NPT
INLET 1/2” NPT
OUTLET
INP
1/8” NPT INLET
PRESSURE TAP
Representative drawing only, some models may vary in appearance.
Brass Street Tee
Brass Hex Nipple
Brass Street 90
Low Gas Pressure Switch
Black Iron Street 90 Pointing
Inlet Pressure Tap with Plug
(Optional inlet pressure
tap on some models)
WARNING
!
FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in personal injury, death,
and/or property damage.
Never test for gas leaks with an open flame. Use a commercially
available soap solution made specifically for the detection of leaks to
check all connections. A fire or explosion may result causing property
damage, personal injury or loss of life.
AVERTISSEMENT
!
RISQUE D’EXPLOSION ET D’INCENDIE
Le non-respect des avertissements de sécurité pourrait d’entraîner des
blessures graves, la mort ou des dommages matériels.
Ne jamais utiliser une flamme nue por vérifier la présence des fuites de
gaz. Pour la vérification de tous les joints, utiliser plutôt une solution
savonneuse commerciale fabriquée spécifiquement pur la détection des
fuites de gaz. Un incendie ou une explosion peut entraîner des
dommages matériels, des blessures ou la mort.

AGAGC9NPS01C Gas Conversion Kit, Natural to Propane: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
9
A170142
Fig. 18 – LGPS for casing wider than 14-3/16 and vent does not pass
between inducer and burner assembly
1. Remove the 1/8-in. (3 mm) NPT pipe plug from the gas valve inlet
pressure tap.
NOTE: Use pipe dope approved for use with Propane Gas.
NOTE: Tighten all fittings and the Low Gas Pressure Switch with a
small wrench. Do not over-tighten, check for gas leaks after gas supply
has been turned on.
2. Apply pipe dope sparingly to the male threads of the brass street
elbow.
3. Install the brass street elbow in inlet pressure tap of the gas valve
4. Tighten the brass street elbow with a small wrench so the outlet
faces to your left.
5. Apply pipe dope sparingly to the male threads of the 2-in. brass
nipple.
6. Install the brass nipple in the outlet of the brass street elbow.
7. Locate the brass street tee in the kit. Orient the tee so the male
threads on the tee face away from you and the female threads face
point to the male threads of the 2-in brass nipple.
8. With a small back-up wrench on the brass street elbow, tighten the
brass street tee with a small wrench until the fittings are tight and
the male portion of the threads point away from you.
9. Apply pipe dope sparingly to the male threads of the 1/8-in. brass
street elbow. Install the Low Gas Pressure Switch on the male
threads of the street elbow. Tighten switch at hex fitting at base of
switch. Do not use switch body to tighten switch. Do not
over-tighten switch.
10. The remaining opening on the brass street tee is the new gas valve
inlet pressure tap (optional on some models). Apply pipe dope to
inlet pressure plug from gas valve and install in open end of brass
street tee.
11. Check all fittings for leaks after gas supply has been turned on.
INSTALL LOW GAS PRESSURE SWITCH WIRES
1. Locate the orange wire in the kit with an insulated straight female
spade terminal and an insulated straight male terminal on the other
end.
2. Connect the female terminal to a terminal on the Low Gas Pressure
Switch.
3. Locate the orange wire in kit with an insulated straight female
spade terminal and an insulated female flag terminal on the other
end.
4. Connect both straight female terminals of the orange wires to the
terminals on the Low Gas Pressure Switch.
INSTALL MANIFOLD
1. Refer to Fig. 2 and Fig. 3.
2. Align the orifices in the manifold assembly with the support rings
on the end of the burner.
3. Insert the orifices in the support rings of the burners. Manifold
mounting tabs should fit flush against the burner box.
NOTE: If manifold does not fit flush against the burner box, the burners
are not fully seated forward. Remove the manifold and check burner
positioning in the burner box assembly.
4. Attach the green/yellow wire and ground terminal to one of the
manifold mounting screws (see Fig. 2)
5. Install the remaining manifold mounting screws.
6. Connect the wires to the flame sensor and hot surface igniter.
7. Connect the connector harness to gas valve.
NOTE: Use only propane-resistant pipe dope. Do not use PTFE
thread-seal tape.
8. Insert the gas pipe through the grommet in the casing. Apply a thin
layer of pipe dope to the threads of the pipe and thread the pipe by
into the gas valve.
NOTE: 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.
9. With a back-up wrench on the inlet boss of the gas valve, finish
tightening the gas pipe to the gas valve.
10. Turn gas on at electric switch on gas valve.
MODIFY PRESSURE SWITCH WIRING
1. Disconnect orange wire from Low Heat Pressure Switch LPS on
inducer housing (see Fig. 1)
2. Connect the orange wire from the Low Heat Pressure Switch to the
orange wire with the insulated male spade terminal (see Fig. 19)
3. Connect the orange wire from the Low Gas Pressure Switch to the
terminal on the Low Heat Pressure Switch.
4. Route orange wires along wire harness. If possible, secure with
wire tie provided in kit. Refer to furnace wiring diagram.
A190143
Fig. 19 – Pressure Switch Wiring
Brass Street 90
Brass Nipple
Low Gas Pressure Switch
Inlet Pressure Tap
Brass Street Tee
with plug
(Optional inlet
pressure
taponsome
models)
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.
ATTENTION
!
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.
ORN

AGAGC9NPS01C Gas Conversion Kit, Natural to Propane: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
10
CHECK INLET GAS PRESSURE
NOTE: This kit is to be used only when inlet gas pressure is between
12.0-in. w.c. and 13.6-in. w.c.
1. On some models, remove 1/8-in. (3 mm) pipe plug from inlet
pressure tap (see Fig. 17 and Fig. 18) and insert pressure tap. Or, on
some models, loosen set screw on inlet tower pressure tap no more
than one full turn with the 3/32-in. hex wrench (see Fig. 10 and
Fig. 11).
2. Verify manometer is connected to inlet pressure tap on gas valve
(see Fig. 10 and Fig. 11).
3. Turn on furnace power supply.
4. Turn gas supply manual shutoff valve to ON position.
5. Turn furnace gas valve switch to ON position.
Single Stage Gas Valve
A190022
Representative drawing only, some models may vary in appearance.
Fig. 20 – Example of Single Stage Furnace Control
1. Jumper R-W thermostat connections on control.
2. When main burners ignite, confirm inlet gas pressure is between
12.0-in. w.c. and 13.6-in. w.c.
3. Remove jumper across R-W thermostat connections to terminate
call for heat.
4. Turn furnace gas valve switch to OFF position.
5. Turn gas supply manual shutoff valve to OFF position.
6. Turn off furnace power supply.
7. Remove manometer and on some models remove pressure tap
fitting.
8. On some models, apply pipe dope sparingly to end of inlet gas pipe
plug and install into unused end of 1/8-in. (3 mm) tee. Use a small
back-up wrench on tee when tightening gas inlet pipe plug. Or, on
some models, tighten set screw on inlet tower pressure tap with a
3/32-in. hex wrench (see Fig. 10 and Fig. 11).
Variable Speed Blower, Two-Stage Gas Valve
A200178
Representative drawing only, some models may vary in appearance.
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in unit damage.
DO NOT operate furnace more than one minute to check inlet gas
pressure, as conversion is not complete at this time.
WARNING
!
FIRE, EXPLOSION, ELECTRICAL SHOCK
HAZARD
Failure to follow this warning could result in personal injury, death or
property damage.
Gas supply MUST be shut off before disconnecting electrical power
and proceeding with conversion.
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.
24-V THERMOSTAT
TERMINALS
P2 –(115VAC) HOT SURFACE IGNITER &
INDUCER MOTOR 115V SUPPLY CONNECTOR
115-VAC (L2) NEUTRAL
CONNECTIONS
115-VAC (BL-1) BLOWER MOTOR LINE
VOLTAGE CONNECTION
EAC-1 TERMINAL
(115-VAC 1.0 AMP MAX.)
P1 –LOW VOLTAGE MAIN HARNESS
CONNECTOR
TRANSFORMER 24-VAC
CONNECTIONS
3-AMP FUSE
STATUS LED LIGHT
HEAT OFF-DELAY
HUMIDIFIER TERMINAL
(24-VAC 0.5 AMP MAX.)
BOARD PART NUMBER
LOCATION
COOLING SPEED
TAP
HEATING SPEED
TAP
XFMR
115-VAC (PR-1) TRANSFORMER
PRIMARY
J2 DEFEAT
JUMPER
TEST/TWIN
J2
HEAT OFF-DELAY
JUMPER SELECT
L1
PLT -FACTORY RUN TEST PORT
PRODUCTION USE ONLY
BL-1
115-VAC (L1) LINE VOLTAGE
CONNECTION
FAN SPEED TAP
J1
HUM
24-V THERMOSTAT
TERMINALS
PL2 –HOT SURFACE
IGNITER & INDUCER
MOTOR CONNECTOR
115-VAC (L2) NEUTRAL
CONNECTIONS
115-VAC (L1) LINE
VOLTAGE CONNECTIONS
EAC-1 TERMINAL
(115-VAC 1.0 AMP MAX.)
PL1 –LOW VOLTAGE MAIN
HARNESS CONNECTOR
AND ECM BLOWER
HARNESS CONNECTOR
TRANSFORMER 24-VAC
CONNECTIONS
3-AMP FUSE
STATUS AND COMM
LED LIGHTS
SW1 SETUP
SWITCHES AND
BLOWER OFF-
DELAY
MODEL PLUG
CONNECTOR
AIR CONDITIONING
(A/C) AIRFLOW
SETUP SWITCHES
COMMUNICATION
CONNECTOR
CONTINUOUS FAN
(C
F) AIRFLOW
SETUP SWITCHES
OUTDOOR
A
IR TEMP
CONNECTOR
HUMIDIFIER
TERMINAL (24
-
VAC
0.5 AMP MAX.
FLASH
UPGRADE
CONNECTOR
(FACTORY
ONLY)
SW4 SETUP
SWITCHES
SOFTWARE
VERSION
PART NUMBER AND
DATE CODE WWYY

AGAGC9NPS01C Gas Conversion Kit, Natural to Propane: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
11
L14F003
Representative drawing only, some models may vary in appearance.
Fig. 21 – Example of Variable Speed Furnace Control for ECM
(VCA) Blower Motor
1. Turn Setup Switch SW1-2 on furnace control ON (see Fig. 21).
2. Jumper R-W/W1 and R-W2 thermostat connections on control.
3. When main burners ignite, confirm inlet gas pressure is between
12.0-in. w.c. and 13.6-in. w.c.
4. Remove jumper across R-W/W1 and R-W2 thermostat connections
to terminate call for heat.
5. Turn furnace gas valve switch to OFF position.
6. Turn gas supply manual shutoff valve to OFF position.
7. Turn off furnace power supply.
8. Remove manometer and on some models remove pressure tap
fitting.
9. On some models, apply pipe dope sparingly to the end of inlet gas
pipe plug and install into unused end of 1/8-in. (3 mm) tee. Use a
small back-up wrench on tee when tightening gas inlet pipe plug.
Or, on some models, tighten set screw on inlet tower pressure tap
with a 3/32-in. hex wrench (see Fig. 12 and Fig. 13).
Fixed Speed Blower (FCT), Two-Stage Gas Valve
A200177
Representative drawing only, some models may vary in appearance.
A200176
Representative drawing only, some models may vary in appearance.
Fig. 22 – Example of Two-Stage Furnace Control
1. Turn Setup Switch SW1 (LHT or TT) on furnace control ON (see
Fig. 22).
2. Jumper R-W/W1 and R-W2 thermostat connections on control.
3. When main burners ignite, confirm inlet gas pressure is between
12.0-in. w.c. and 13.6-in. w.c.
4. Remove jumper across R-W/W1 and R-W2 thermostat connections
to terminate call for heat.
5. Turn furnace gas valve switch to OFF position.
6. Turn gas supply manual shutoff valve to OFF position.
7. Turn off furnace power supply.
8. Remove manometer and on some models remove pressure tap
fitting.
9. On some models, apply pipe dope sparingly to the end of inlet gas
pipe plug and install into unused end of 1/8-in. (3 mm) tee. Use a
small back-up wrench on tee when tightening gas inlet pipe plug.
Or, on some models, tighten set screw on inlet tower pressure tap
no more than one full turn with a 3/32-in. hex wrench (see Fig. 12
and Fig. 13).
24-V THERMOSTAT
TERMINALS
PL2 – HOT SURFACE
IGNITER & INDUCER
MOTOR CONNECTOR
115-VAC (L2) NEUTRAL
CONNECTIONS 115-VAC (L1) LINE
VOLTAGE CONNECTIONS
EAC-1 TERMINAL
(
115-VAC 1.0 AMP MAX.
)
PL1 – LOW VOLTAGE MAIN
HARNESS CONNECTOR
TRANSFORMER 24-VAC
CONNECTIONS
3-AMP FUSE
STATUS AND COMM
LED LIGHTS
SW1 SETUP
SWITCHES AND
BLOWER OFF-
DELAY
MODEL PLUG
CONNECTOR
COMMUNICATION
CONNECTOR
AIR CONDITIONING (A/C) &
CONTINUOUS FAN (CF)
AIRFLOW SETUP SWITCHES
OUTDOOR
AIR TEMP
CONNECTOR
HUMIDIFIER
TERMINAL (24-VAC
0.5 AMP MAX.) ACRDJ – AIR
CONDITIONING
RELAY DISABLE
JUMPER
FLASH
UPGRADE
CONNECTOR
(FACTORY
ONLY)
SOFTWARE
VERSION
TEST / TWIN
HUM
PLT
PL1
W2 Y1 DHUM G COM W/W1 Y/Y2 R
24V
FUSE 3-- AMP
EAC-- 2
EAC-- 1
L1 BL-- 1 XFMR
L2
COM
HI HT
COOL
LO H T
SPARE 1
24V MTR TAPS
BLOWER SPEED
TERMINALS
115--VAC (L2)
NEUTRAL
CONNECTIONS
LED OPERATION
& DIAGNOSTIC LIGHT
3--AMP FUSE
24--V THERMOS TAT
TERMINALS
SET UP SWITCHES
THERMOSTAT TYPE (TT)
AND HEAT OFF--DELAY
TWINNING AND/OR
COMPONENT TEST
TERMINAL
HUMIDIFIER TERMINAL
(24 VAC 0.5 AMPS MAX)
TRANSFORMER
24 VAC CONNECTIONS
P--1 LOW VOLTAGE
P2 -- HOT SURFACE
IGNITER/INDUCE R
MOTOR CONNECTION
11 5 VA C
BLOWER POWER (BL1)
CONNECTION
115 VAC LINE (L1)
TT
OFF
DLY
ON OFF
123
IDR HSIR
IDM
IHI/LOR
PL2
1
HSI HI L O
1
EAC TERMINAL
115 VAC 1.0 AMP
MAX
11 5 VA C
TRANSFORMER
PRIMARY
SPARE 2
HUM
115 VAC HUM
COM/BLUE 24VAC/RED
COM 24V
24VAC
TEST / TWIN
HUM
PLT
SEC-2 SEC-1
COM 24VAC
PL1
W2 Y DHUM G COM W/W1 Y/Y2 R
24V
FUSE 3-AMP
EAC-2
EAC-1
L1 BL-1 PR-1
L2
COM
HI HT
COOL
LO HT
SPARE 2
RTMV42
TAPS
BLOWER SPEED
TERMINALS
115-VAC (L2)
NEUTRAL
CONNECTIONS
LED OPERATION
& DIAGNOSTIC LIGHT
3-AMP FUSE
24-V THERMOSTAT
TERMINALS
SET UP SWITCHES
LOW HEAT ONLY
AND BLOWER
OFF-DELAY
TWINNING AND/OR
COMPONENT TEST
TERMINAL
ACRDJ - AIR CONDITIONING
RELAY DISABLE JUMPER
HUMIDIFIER TERMINAL
(24 VAC 0.5 AMPS MAX)
TRANSFORMER
24 VAC CONNECTIONS
PL1-LOW VO LTAGE
MAIN HARNESS CONNEC TOR
PL2 - HOT SURFACE
IGNITER/INDUCER
MOTOR CONNECTION
115 VAC
BLOWER POWER (BL1)
CONNECTION
115 VAC LINE (L1)
INPUT
LHT
OFF
DLY
ON OFF
1 2 3
IDR HSIR
IDM
IHI/LOR
PL2
1
HSI HI LO
1
EAC TERMINAL
115 VAC 1.0 AMP MAX
115 VAC
TRANSFORMER
PRIMARY
SPARE 1

AGAGC9NPS01C Gas Conversion Kit, Natural to Propane: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
12
Modulating Gas Valve
L11F061
Representative drawing only, some models may vary in appearance.
Fig. 23 – Example of Modulating Furnace Control for ECM Blower
Motor
1. Turn Setup Switch SW1-2 on furnace control ON (see Fig. 23).
2. Jumper R-W/W1 and R-W2 thermostat connections on control.
3. When main burners ignite, confirm inlet gas pressure is between
12.0-in. w.c. and 13.6-in. w.c.
4. Remove jumper across R-W/W1 and R-W2 thermostat connections
to terminate call for heat.
5. Turn furnace gas valve switch to OFF position.
6. Turn gas supply manual shutoff valve to OFF position.
7. Turn off furnace power supply.
8. Remove manometer and on some models remove pressure tap
fitting.
9. On some models, apply pipe dope sparingly to the end of inlet gas
pipe plug and install into unused end of 1/8-in. (3 mm) tee. Use a
small back-up wrench on tee when tightening gas inlet pipe plug.
Or, on some models, tighten set screw on inlet tower pressure tap
with a 3/32-in. hex wrench (see Fig. 16 through Fig. 18).
CHECK FURNACE AND MAKE ADJUSTMENTS
1. Be sure main gas and electric supplies to furnace are off.
2. On some models, remove 1/8-in. (3 mm) pipe plug from manifold
pressure tap on the outlet end of gas valve and insert pressure tap.
Or, on some models, loosen the set screw on manifold tower
pressure tap no more than one full turn with the 3/32-in. hex
wrench.
3. Attach manometer to manifold pressure tap on gas valve (see
Fig. 10, Fig. 11, Fig. 12, Fig. 13 or Fig. 16).
4. Turn gas supply manual shutoff valve to ON position.
5. Turn furnace gas valve switch to ON position.
6. Check all threaded pipe connections for gas leaks.
7. Turn on furnace power supply.
GAS INPUT RATE INFORMATION
The gas input rate for propane is the same as for natural gas. See furnace
rating plate (see Fig. 5) for input rate. The input rate for propane is
determined by manifold pressure and orifice size.
Modulating gas valve must be set for Maximum Heat first and then set
for Minimum heat on Modulating furnaces.
Two-Stage gas valve must be set for High Heat first and then set for Low
Heat on Two-Stage furnaces.
Furnace gas input rate on rating plate is for installations at altitudes up to
2000 ft. (610 M).
In the U.S.A.; the input rating for altitudes above 2000 ft. (610M) must
be reduced by 2 percent for each 1000 ft. (305 M) above sea level.
In Canada; the input rating must be derated by 5 percent for altitudes of
2000 ft. (610 M) to 4500 ft. (1372 M) above sea level.
The Conversion Kit Rating Plate accounts for high altitude derate.
SET GAS INPUT RATE
A11461
Fig. 24 – Burner Flame
Single Stage Gas Valve
1. Jumper R and W thermostat connections to call for heat (see
Fig. 20).
2. Check manifold orifices for gas leaks when main burners ignite.
3. Adjust gas manifold pressure.
4. Remove cap that conceals gas valve regulator adjustment screw.
5. Turn adjusting screw counterclockwise (out) to decrease manifold
pressure or clockwise (in) to increase manifold pressure.
6. Replace gas valve regulator seal cap.
WARNING
!
FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in personal injury, death,
and/or property damage.
Never test for gas leaks with an open flame. Use a commercially
available soap solution made specifically for the detection of leaks to
check all connections. A fire or explosion may result causing property
damage, personal injury or loss of life.
24-V THERMOSTAT
TERMINALS
PL2 –HOT SURFACE
IGNITER & INDUCER
MOTOR CONNECTOR
115-VAC (L2) NEUTRAL
CONNECTIONS
115-VAC (L1) LINE
VOLTAGE CONNECTIONS
EAC-1 TERMINAL
(115-VAC 1.0 AMP MAX.)
PL1 –LOW VOLTAGE MAIN
HARNESS CONNECTOR
PL3 –ECM BLOWER
HARNESS
CONNECTOR
TRANSFORMER 24-VAC
CONNECTIONS
3-AMP FUSE
STATUS AND COMM
LED LIGHTS
SW1 SETUP
SWITCHES AND
BLOWER OFF-
DELAY
MODEL PLUG
CONNECTOR
AIR CONDITIONING
(A/C) AIRFLOW
SETUP SWITCHES
COMMUNICATION
CONNECTOR
CONTINUOUS FAN
(CF) AIRFLOW
SETUP SWITCHES
OUTDOOR
A
IR TEMP
CONNECTOR
HUMIDIFIER
TERMINAL (24
-
VAC
0.5 AMP MAX.
FLASH
UPGRADE
CONNECTOR
(FACTORY
ONLY)
SW4 SETUP
SWITCHES
SOFTWARE
VERSION
PART NUMBER AND
DATE CODE WWYY
PL8 - MODULATING
GAS VALVE
CONNECTOR
AVERTISSEMENT
!
RISQUE D’EXPLOSION ET D’INCENDIE
Le non-respect des avertissements de sécurité pourrait d’entraîner des
blessures graves, la mort ou des dommages matériels.
Ne jamais utiliser une flamme nue por vérifier la présence des fuites de
gaz. Pour la vérification de tous les joints, utiliser plutôt une solution
savonneuse commerciale fabriquée spécifiquement pur la détection des
fuites de gaz. Un incendie ou une explosion peut entraîner des
dommages matériels, des blessures ou la mort.
Burner Flame
Burner
Manifold

AGAGC9NPS01C Gas Conversion Kit, Natural to Propane: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
13
7. Verify manifold pressure is correct.
NOTE: Gas valve regulator seal cap MUST be in place when checking
input rate. When correct input is obtained, main burner flame should be
clear blue, almost transparent (see Fig. 24). Be sure regulator seal cap is
in place when finished.
8. Remove jumper across R and W thermostat connections to
terminate call for heat.
9. Turn furnace gas valve control switch or control knob to OFF
position.
10. Turn off furnace power supply.
11. Remove manometer and on some models remove pressure tap
fitting.
12. On some models, apply pipe dope sparingly to end of 1/8-in. (3
mm) pipe plug and install in the manifold pressure tap opening. Or,
on some models, tighten set screw on manifold tower pressure tap
with a 3/32-in. hex wrench (see Fig. 10 or Fig. 11)
13. Turn furnace gas-valve switch to ON position.
14. Turn on furnace power supply.
15. Set room thermostat to call for heat.
16. Check pressure tap plug for gas leaks when main burners ignite.
17. Check for correct burner flame.
18. After making the required manifold pressure adjustments, check
and adjust the furnace temperature rise per the furnace installation
instructions.
Fixed-Speed Blower (FCT), Two-Stage Gas Valve
1. Verify SW1 (LHT or TT) on furnace control is turned “ON” (see
Fig. 22).
2. Jumper R and W/W1 thermostat connections to call for heat.
3. Check manifold orifices for gas leaks when main burners ignite.
4. Adjust gas manifold pressure.
5. Remove caps that conceal adjustment screws for gas valve
regulators (see Fig. 12 or Fig. 13).
6. Adjust low heat input rate manifold pressure for propane gas.
7. Turn low heat adjusting screw counterclockwise (out) to decrease
input rate or clockwise (in) to increase input rate.
8. When correct input is obtained, main burner flame should be clear
blue, almost transparent (see Fig. 24).
9. Jumper R and W/W1 and W2 on control center thermostat
connections. This keeps furnace locked in high heat operation.
10. Adjust high heat input rate manifold pressure for propane gas.
11. Turn high heat adjusting screw counterclockwise (out) to decrease
input rate or clockwise (in) to increase input rate.
12. Replace caps that conceal gas valve regulator adjustment screws.
13. When correct input is obtained, main burner flame should be clear
blue, almost transparent (see Fig. 24).
14. Remove jumper across R, W1, and W2 after high heat adjustment
to terminate call for heat.
15. Turn setup switch SW1 (TT) on furnace control to OFF position.
16. Turn furnace gas-valve switch to OFF position.
17. Turn off furnace power supply.
18. Remove manometer from the manifold pressure tap of the gas
valve.
19. On some models, apply pipe dope sparingly to end of 1/8-in. (3
mm) pipe plug and install in the manifold pressure tap opening. Or,
on some models, tighten set screw on manifold tower pressure tap
with a 3/32-in. hex wrench (see Fig. 12 or Fig. 13).
20. Turn on furnace power supply.
21. Set room thermostat to call for heat.
22. Check pressure tap plug for gas leaks when main burners ignite.
23. Check for correct burner flame.
24. After making the required manifold pressure adjustments, check
and adjust the furnace temperature rise per the furnace installation
instructions.
Variable Speed, Two-Stage Gas Valve
1. Verify SW1-2 on furnace control is turned “ON”.
2. Jumper R and W/W1 thermostat connections to call for heat.
3. Check manifold orifices for gas leaks when main burners ignite.
4. Adjust gas manifold pressure. Refer to Conversion Kit Rating Plate
347786-201
5. Remove caps that conceal adjustment screws for gas valve
regulators (see Fig. 12 or Fig. 13).
6. Adjust low-heat manifold pressure for propane gas (see Fig. 12 or
Fig. 13).
7. Turn low-heat adjusting screw counterclockwise (out) to decrease
input rate or clockwise (in) to increase input rate.
NOTE: When correct input is obtained, main burner flame should be
clear blue, almost transparent (see Fig. 24).
8. Jumper R, W/W1 and W2 on control center thermostat connections.
This keeps furnace locked in high-heat operation.
9. Adjust high-heat manifold pressure for propane gas.
10. Turn high-heat adjusting screw counterclockwise (out) to decrease
input rate or clockwise (in) to increase input rate.
11. Replace caps that conceal gas valve regulator adjustment screws.
NOTE: When correct input is obtained, main burner flame should be
clear blue, almost transparent (see Fig. 24).
12. Remove jumper across R, W1, and W2 after high-heat adjustment
to terminate call for heat.
13. Turn setup switch SW1-2 on furnace control to OFF position.
14. Turn furnace gas valve switch to OFF position.
15. Turn off furnace power supply.
16. Remove manometer from the manifold pressure tap of the gas
valve.
17. On some models, apply pipe dope sparingly to end of 1/8-in. (3
mm) pipe plug and install in the manifold pressure tap opening. Or,
on some models, tighten set screw on manifold tower pressure tap
with a 3/32-in. hex wrench (see Fig. 12 or Fig. 13).
18. Turn furnace gas valve switch to ON position.
19. Turn on furnace power supply.
20. Set room thermostat to call for heat.
21. Check pressure tap plug for gas leaks when main burners ignite.
22. Check for correct burner flame.
23. Observe unit operation through two complete heating cycles.
24. See Sequence of Operation in furnace Installation, Start-up, and
Operating Instructions.
25. Set room thermostat to desired temperature.
26. After making the required manifold pressure adjustments, check
and adjust the furnace temperature rise per the furnace installation
instructions.

AGAGC9NPS01C Gas Conversion Kit, Natural to Propane: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
14
Modulating Gas Valve
For proper operation and long term reliability, the manifold pressure
must be adjusted as specified on the conversion kit rating plate.
The modulating furnace manifold pressure is set at two points. The first
point is Maximum Heat. The second point is Minimum Heat. Do not
adjust Intermediate Heat manifold pressure. Intermediate Heat manifold
pressure can be checked as part of the temperature rise, but is not
adjustable. Always adjust Maximum Heat first, then Minimum Heat.
NOTE: DO NOT set Maximum Heat manifold pressure less than
10.5-in. w.c. or more than 11-in. w.c. for propane gas.
NOTE: Use care when performing adjustments. Gas valve adjustment is
performed by turning a rotary adjustment switch inside the gas valve
with a small straight blade screwdriver. Excessive force can break or
bend the rotary adjustment switch making it non-adjustable.
To adjust manifold pressure to obtain input rate for Maximum
Heat:
1. Turn Setup switch SW1-2 to ON.
2. Verify Set-up switch SW4-2 is turned OFF.
3. Jumper the R to W/W1 and W2 thermostat connections at the
furnace control board.
4. After the main burners ignite and the blower starts, confirm
Maximum Heat manifold pressure is correct, based on the manifold
pressure table on the Conversion Kit Rating Plate.
5. To adjust the Maximum Heat manifold pressure, Slowly turn the
rotary adjustment switch counterclockwise to decrease manifold
pressure or clockwise to increase manifold pressure.
6. Turn rotary adjustment switch no more than one click per second
until you obtain the required manifold pressure.
Main burner flame should be clear blue, almost transparent.
To adjust manifold pressure to obtain input rate for Minimum Heat:
1. Remove the jumper from W2 at the thermostat connections at the
furnace control board control.
2. Wait until the burners and the blower transitions to Minimum Heat.
3. Verify the Minimum Heat manifold pressure is correct, based on the
manifold pressure table on Conversion Kit Rating Plate.
4. To adjust the Minimum Heat manifold pressure, Slowly turn the
rotary adjustment switch counterclockwise to decrease manifold
pressure or clockwise to increase manifold pressure.
5. Turn rotary adjustment switch no more than one click per second
until you obtain the required manifold pressure. This adjustment
will not affect the previous Maximum Heat adjustment.
After adjusting the manifold pressure, allow the furnace to operate an
additional 5 minutes before checking Minimum Heat Temperature rise.
Furnace must operate within ranges of temperature rise specified on the
furnace rating plate. Determine air temperature rise as follows:
1. Place thermometers in return and supply ducts as near furnace as
possible. Be sure thermometers do not see heat exchanger so that
radiant heat does not affect readings. This practice is particularly
important with straight-run ducts.
2. When thermometer readings stabilize, subtract return-air
temperature from supply-air temperature to determine air
temperature rise.
3. Allow the furnace to run for at least 10 minutes before checking
Temperature Rise.
If the temperature rise is too high or too low in Minimum Heat:
1. Remove jumpers from R and W/W1.
2. Wait until the blower off delay is completed.
3. Turn 115 VAC power off.
4. Check the position of Heat Rise Adjustment Switch SW1-3. When
set to ON, airflow is raised 18% higher for Minimum Heat and
Intermediate Heat. Factory default position is OFF.
5. Turn 115 VAC power on.
6. Jumper R to W/W1 and W2.
7. After burners ignite and blower starts allow the furnace to run for at
least 10 minutes before checking Temperature Rise.
Maximum Heat Temperature Rise
If the temperature rise is too high or too low in Maximum Heat:
1. Remove jumpers from R, W1 and W2.
2. Wait until the blower off delay is completed.
3. Turn 115 VAC power off.
4. Check the position of the Efficiency/Comfort Adjustment switch
SW1-4. When set to OFF (Efficiency Mode), airflow is 10% higher
for Minimum, 7.5% for Intermediate Heat, and 17.5% for
Maximum Heat. Factory default position is ON (Comfort Mode).
5. Turn 115 VAC power on.
6. Re-check Minimum Heat Temperature Rise.
7. Remove jumpers across thermostat connections to terminate the
call for heat. Wait until the blower off delay is completed.
8. Turn gas supply manual shutoff valve to OFF position.
9. Turn off furnace power supply. Turn setup switch SW1-2 to OFF.
10. Remove manometer from the manifold pressure tap of the gas
valve.
11. On some models, apply pipe dope sparingly to end of 1/8-in. (3
mm) pipe plug and install in the manifold pressure tap opening (see
Fig. 16). Or, on some models, tighten set screw on manifold tower
pressure tap with a 3/32-in. hex wrench (see Fig. 25).
A11451
Fig. 25 – Modulating Gas Valve Adjustment
12. Re-install plastic cap over rotary adjustment switch on the top of
the gas valve.
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in gas valve damage.
DO NOT force the rotary adjustment switch on the modulating gas
valve. DO NOT turn the rotary adjustment switch faster than one click
per second when adjusting manifold pressure. Gas valve will be
damaged if excessive force is used on the rotary switch.
WARNING
!
FIRE HAZARD
Failure to follow this warning could result in personal injury, death,
and/or property damage.
Manifold pressure tap set screw must be tightened or 1/8-in. (3 mm)
NPT pipe plug must be installed to prevent gas leaks.

AGAGC9NPS01C Gas Conversion Kit, Natural to Propane: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
15
13. Turn furnace gas valve switch to ON position.
14. Turn on furnace power supply.
15. Set room thermostat to call for heat.
16. Check pressure tap plug for gas leaks when main burners ignite.
17. Check for correct burner flame.
CHECK LOW GAS PRESSURE SWITCH
The newly installed low gas pressure switch is a safety device used to
guard against adverse burner operating characteristics that can result
from low gas supply pressure. Switch opens at not less than 7.2 in. w.c.
and closes at not greater than 10.2 in. w.c.
This switch also prevents operation when the propane tank level is low
which can result in gas with a high concentration of impurities,
additives, and residues that have settled to the bottom of the tank.
Operation under these conditions can cause harm to the heat exchanger
system. This normally open switch closes when gas is supplied to gas
valve under normal operating pressure.
The closed switch completes control circuit. Should an interruption or
reduction in gas supply occur, the gas pressure at switch drops below
low gas pressure switch setting, and switch opens. Any interruption in
control circuit (in which low gas pressure switch is wired) quickly closes
gas valve and stops gas flow to burners. When normal gas pressure is
restored, the system must be electrically reset to re-establish normal
heating operation.
Before leaving installation, observe unit operation through two complete
heating cycles. During this time, turn gas supply to gas valve off just
long enough to completely extinguish burner flame, then instantly
restore full gas supply. To ensure proper low gas pressure switch
operation, observe that there is no gas supply to burners until after hot
surface igniter begins glowing.
LABEL APPLICATION
1. Fill in Conversion Responsibility Label 347786-205 and apply to
Blower Access Door of furnace. Date, name, and address of
organization making this conversion are required (see Fig. 26).
2. Attach Conversion Rating Plate Label 347786-201 to outer door of
furnace (see Fig. 5).
3. Attach Gas Control Conversion Label 347786-202 to gas valve. Do
not use 347786-203, which is similar.
CHECKOUT
1. Observe unit operation through two complete heating cycles.
2. See Sequence of Operation in furnace Installation, Start-Up, and
Operating Instructions.
3. Set room thermostat to desired temperature.
A210149
Fig. 26 – Gas Conversion Responsibility Label
A210148
Fig. 27 – Gas Control Conversion Label

©2022 Carrier. All rights reserved.
A Carrier Company
Edition Date: 11/22 Catalog No: AG-KC019SNP-04 REV A
Replaces:AG-KC019SNP-04
AGAGC9NPS01C Gas Conversion Kit, Natural to Propane: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
16