Carrier Kgbnp50011sp User manual

KGBNP50011SP

Installation Instructions

G a s C o n v e r s i o n K i t N a t u r a l --- t o --- P r o p a n e f o r

1 Stage Condensing (90%+) and

Non---Condensing Gas Furnaces

CERTIFIED

NOTE: Read the entire instruction manual before starting the

installation.

SAFETY CONSIDERATION

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.

!WARNING

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.

!AVERTISSEMENT

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

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.

!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.

!WARNING

This instruction covers the installation of gas conversion kit Part

No. KGBNP50011SP to convert the following furnaces from

natural gas usage to propane 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, PG8JA, PG8JE, PG8MA, and PG8ME

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.

Table 1 – KGBNP50011SP Contents

COMPONENT NUMBER QTY. DESCRIPTION

EF39ZW023 1REGULATOR SPRING KIT

HK02LB008 1LOW GAS PRESSURE SWITCH

323751-702 71.30 MM ORIFICES, LH32DB210

323269-703 71.25 MM ORIFICES, LH32DB209

323269-704 7#55 ORIFICES, LH32DB201

323272-702 7#56 ORIFICES, LH32DB206

337932-701 1BAG ASSEMBLY INCLUDEDS:

FAJ5812B 790% MIXER SCREW

328456-402 17/64-IN. DRILL BIT

337932-702 1BAG ASSEMBLY INCLUDEDS:

327593-401 780% MIXER SCREW

328456-401 15/64-IN. DRILL BIT

337932-703 1BAG ASSEMBLY INCLUDEDS:

CA15RA001 1BLK IRON STREET ELBOW 1/8-IN NPT

66175D55 1CONNECTOR-1/4QC

HY76TB125 1WIRE TIE

CA52JZ103 1BRASS HEX NIPPLE 1/8-IN NPT

CA21JZ001 1BRASS TEE 1/8 NPT

CA16JQ001 1BRASS STREET ELBOW 1/8 NPT

CA01JZ001 1BRASS NIPPLE 1/8-IN X 2-IN NPT

CA21JQ001 1BRASS STREET TEE 1/8-IN NPT

HY89SC047 1CONNECTOR,SPLC 3/16-IN QC

ORANGE WIRE, 18-IN 11/4 INSUL FLAG Q.C. X 1/4 UNINSUL ST Q.C.

ORANGE WIRE, 12-IN 11/4 INSUL TAB Q.C. X 1/4 UNINSUL ST Q.C.

DESCRIPTION AND USAGE

This kit is designed for use in the furnaces listed below. 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.

SECTION 1

Table 2 – Condensing Furnaces

MODEL NUMBERS BEGINNING WITH:

59SC2 59SC5 59SE5 59SP2 59SP5

912S 915S 922S 925S

PG92S PG95S

INSTALLATION

1. Set room thermostat to lowest setting or “OFF”

2. Remove outer doors

3. Disconnect power at external disconnect, fuse or circuit

breaker.

4. Turn off gas at external shut--off or gas meter.

5. Remove outer doors and set aside.

6. Turn electric switch on gas valve to OFF.

MANIFOLD/ORIFICE/BURNER REMOVAL

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.

CAUTION

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.

PRUDENCE

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. Discon-

nect wires from Hot Surface Igniter (HSI) and Flame

Sensor.

3. Support the manifold and remove the 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.

7. Remove the flame sensor from the burner assembly.

8. Remove the orifices from the manifold and discard.

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

BLOWER DOOR

SAFETY SWITCH

A11408

Fig. 1 -- Representative Furnace Drawing

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˚

Gas valve is parallel to manifold

within + or - 3˚

A11407

Fig. 2 -- Manifold Assembly

FLAME SENSOR

(BELOW BURNER)

FLAME ROLLOUT

SWITCH

BRACKET, IGNITER

IGNITER

BURNER SUPT. ASSY

BURNER ASSY

A11403

Fig. 3 -- Burner Assembly

ORIFICE SELECTION/DERATE

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.)

CAUTION

BURNER

ORIFICE BURNER

ORIFICE

A96249

Fig. 4 -- Burner Orifice

Refer to conversion kit rating plate 339852--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.

INSTALL ORIFICES

1. Install main burner orifices. Do not use Teflon tape. Fin-

ger--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: There are 2 sets of mixer screws. One set is for

Condensing gas furnaces, the other set is for Non--condensing gas

furnaces. Use only the parts in the bag marked “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 in each dimple with a sup-

plied drill bill.

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.

A13056

Fig. 5 -- Conversion Kit Rating Plate

A11294

Fig. 6 -- Gas Conversion Kit

1.9”

(48.76 mm)

1.8”

(46.96 mm)

Drill out with

7/64” drill bit

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 & 9.

2-1/2-in.

(64.4)

1-1/4-in.

(31.8)

A11405

Fig. 8 -- Igniter Position -- Back View

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.

A12932

Fig. 9 -- Igniter Position -- Side View

CONVERT GAS VALVE

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 left this way, sooting and

corrosion will occur leading to early heat exchanger failure.

CAUTION

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.

!WARNING

1. Refer to Fig. 10.

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.)

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.)

9. Do not install regulator seal caps at this time.

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

A13048

Fig. 10 -- Single--stage valve

INSTALL LOW GAS PRESSURE SWITCH

NOTE: Install the Low Gas Pressure Switch before installing the

manifold on the burner assembly.

There are 2 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. (360 mm) wide casing, install the

switch as follows (See Fig. 11.):

1. Remove the 1/8-in. 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.

FIRE AND 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.

!WARNING

RISQUE D’EXPLOSION ET D’INCENDIE

Cet avertissement peut entraîner de la mort, des blessures et/ou

des dégâts matériels.

Ne jamais examiner pour les fuites de gaz avec une flamme

vive. Utilisez plutôt un savon fait specifiquement pour la

détection des fuites de gaz pour verifier tous les connections.

Un incendie ou une explosion peut entrainer des dommages

matériels, des blessures ou la mort.

!AVERTISSEMENT

2. Apply pipe dope sparingly to the male threads of the

1/8-in. black iron street elbow. Install the street elbow into

the gas valve inlet pressure tap. Point the open end of the

street elbow toward you.

3. Apply pipe dope sparingly to the male threads of the

1/8-in. brass street tee. Install the male end of the street tee

as shown in Fig. 12. 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. brass hex nipple. Install the hex nipple into the

open end of the brass street tee. See Fig. 12. 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. 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.

7. The remaining opening on the brass street tee is the new

gas valve inlet pressure tap. Install manometer fitting to

the open end of the brass street tee. Or if installation is to

be completed later, 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. (360 mm)/Vent Does Not

Pass Between Inducer and Burner Assembly

1. If the vent pipe does not pass between the inducer and

burner assembly, or the furnace is wider than a 14 3/16-in.

(360 mm) wide casing, install the switch as follows (See

Fig. 12.):

2. Remove the 1/8-in. NPT pipe plug from the gas valve inlet

pressure tap.

NOTE: Use pipe dope approved for use with Propane Gas.

Brass Street Tee

Brass Hex Nipple

Brass Street 90

Low Gas Pressure Switch

Black Iron Street 90 Pointing

Inlet Pressure Tap with Plug

Reïinstall pipe plug

after removal

L13F011

Fig. 11 -- Low Gas Pressure Switch -- All Widths

L13F012

Fig. 12 -- Alternate Low Gas Pressure Switch --

17 1/2--in and Wider Furnaces

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 ter-

minal 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 fe-

male 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.RefertoFig.2and3.

2. Align the orifices in the manifold assembly with the sup-

port rings on the end of the burner.

3. Insert the orifices in the support rings of the burners. Man-

ifold 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 both rollout switches.

7. Connect the wires to the flame sensor and hot surface ig-

niter.

8. Connect the connector harness to gas valve.

NOTE: Use only propane-resistant pipe dope. Do not use Teflon

tape.

9. Insert the gas pipe through the grommet in the casing. Ap-

ply 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.

10. With a back-up wrench on the inlet boss of the gas valve,

finish tightening the gas pipe to the gas valve.

11. Turn gas on at electric switch on gas valve.

MODIFY PRESSURE SWITCH WIRING

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.

CAUTION

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.

PRUDENCE

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. 13.

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.

A12372

Fig. 13 -- Pressure Switch Wiring

CHECK INLET GAS PRESSURE

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.

CAUTION

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. Verify manometer is connected to inlet pressure tap on gas

valve. (See Fig. 10.)

2. Turn on furnace power supply.

3. Turn gas supply manual shutoff valve to ON position.

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.

!WARNING

4. Turn furnace gas valve switch to ON position.

5. Jumper R--W thermostat connections on control.

6. When main burners ignite, confirm inlet gas pressure is

between 12.0--in. W.C. and 13.6--in. W.C.

7. Remove jumper across R--W thermostat connections to

terminate call for heat.

8. Turn furnace gas valve switch to OFF position.

CHECK FURNACE AND MAKE ADJUSTMENTS

FIRE AND 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.

!WARNING

RISQUE D’EXPLOSION ET D’INCENDIE

Cet avertissement peut entraîner de la mort, des blessures et/ou

des dégâts matériels.

Ne jamais examiner pour les fuites de gaz avec une flamme

vive. Utilisez plutôt un savon fait specifiquement pour la

détection des fuites de gaz pour verifier tous les connections.

Un incendie ou une explosion peut entrainer des dommages

matériels, des blessures ou la mort.

!AVERTISSEMENT

1. Be sure main gas and electric supplies to furnace are off.

2. Remove 1/8-in. (3 mm) pipe plug from manifold pressure

tap on downstream side of gas valve.

3. Attach manometer to manifold pressure tap on gas valve.

(see Fig. 10.)

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.

The gas valve must be set for Low Heat first and then set for High

Heat on 2--stage and variable--speed 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.

SETGASINPUTRATE

1. Jumper R and W thermostat connections to call for heat.

(See Fig. 14.)

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.

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. 15). 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 reinstall manifold pressure tap

plug.

12. Turn furnace gas--valve switch to ON position.

13. Turn on furnace power supply.

14. Set room thermostat to call for heat.

15. Check pressure tap plug for gas leaks when main burners

ignite.

16. Check for correct burner flame.

17. Observe unit operation through 2 complete heating cycles.

18. See Sequence of Operation in furnace Installation, Start--

Up, and Operating Instructions.

19. Set room thermostat to desired temperature.

20. After making the required manifold pressure adjustments,

check and adjust the furnace temperature rise per the fur-

nace installation instructions.

TWINNING AND/OR

COMPONENT TEST

TERMINAL

PL1− LOW VOLTAGE MAIN

HARNESS CONNECTOR

TRANSFORMER 24VAC

CONNECTIONS

EAC TERMINAL

(115 VAC 1.0 AMP MAX.)

SEC-2

115−VAC (L2)

NEUTRAL

CONNECTIONS

24−V THERMOSTAT

TERMINALS

HUMIDIFIER TERMINAL

(24−VAC 0.5 AMP MAX)

3−AMP FUSE

LED

OPERATION &

DIAGNOSTIC

LIGHT

SEC-1

BLOWER SPEED

SELECTION TERMINALS

BL−1 PR-1

COM

HEAT

COOL

FAN

SPARE2

SPARE1

Y1 DHUM

BLOWER OFF-DELAY

120 180

90 150

24V MTR TAPS

115 VAC (L1)

INPUT

L1 IND

PL-2 HOT SURFACE

IGNITOR (HSI) &

INDUCER MOTOR

(IND) CONNECTOR

HUM

EAC-1

HSI

PL-2

PL1

EAC-2

Com

24V

A11391

Fig. 14 -- Single--Stage Furnace Control

Burner Flame

Burner

Manifold

A11461

Fig. 15 -- 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 2

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 339852--205 (see

Fig. 32) and apply to blower door of furnace as shown.

Date, name, and address of organization making this con-

version are required.

2. Attach Conversion Rating Plate Label 339852--201 to out-

er door of furnace.

3. Apply Gas Control Conversion Label to gas valve: For

single--stage gas valve apply label 339852--202 to gas

valve. (Do not use 339852--203, which is similar) Check

for correct normal operating sequence of the ignition sys-

tem as described in furnace Installation, Start--Up, and Op-

erating Instructions.

4. Replace control access door, blower door and outer door

of furnace.

CHECKOUT

1. Observe unit operation through 2 complete heating cycles.

2. See Sequence of Operation in furnace Installation, Start--

Up, and Operating Instructions.

3. Set room thermostat to desired temperature.

SECTION 2

Table 3 – Non--condensing Furnaces

58DL 58PH 58ST 310A 310J 311A

311J 313A 313J PG8JA PG8JE PG8MA

PG8ME

INSTALLATION

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, 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.

!WARNING

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.

!AVERTISSEMENT

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

1. Set room thermostat to lowest setting or “OFF”.

2. Remove outer doors.

3. Disconnect power at external disconnect, fuse or circuit

breaker.

4. Turn off gas at external shut-off or gas meter.

5. Remove outer doors and set aside.

6. Turn electric switch on gas valve to OFF.

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.

!WARNING

MANIFOLD/ORIFICE/BURNER REMOVAL

ttach Green/Yellow

ground wire here

Manifold Assy Sensor Flame

Clip, Harness

Burner Assy

Burner Support Assy

Switch, Temp (2)

Ignitor

Bracket Ignitor

A11390

Fig. 16 -- 80% Burner

Gas Valve

Screw (2)

Attach Green/Yellow

ground wire here

Orifice

Manifold

A11395

Fig. 17 -- 80% Manifold

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. See Fig. 16 & 17.

1. Disconnect the gas pipe from gas valve and remove pipe

from the furnace casing. See Fig. 18.

A03059

Fig. 18 -- Representative Furnace Drawing

2. Disconnect the connector harness from gas valve Discon-

nect wires from Hot Surface Igniter (HSI) and Flame

Sensor.

3. Support the manifold and remove the 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.

5. Remove wires from both rollout switches.

6. Slide one--piece burner assembly out of slots on sides of

burner box.

7. Remove the flame sensor from the burner assembly.

8. Remove the orifices from the manifold and discard.

NOx DEVICE REMOVAL

UNIT DAMAGE HAZARD

Failure to follow this caution may result in unit damage.

Furnace MUST have low NOx devices removed prior to

operating furnace on propane gas.

CAUTION

For NOx device removal, follow these additional steps:

1. Remove the screw underneath the heat exchanger inlet that

secures the NOx device in the heat exchanger. (See Fig.

19.)

2. Use a pair of needle nose pliers to remove the NOx device.

3. Squeeze the sides of the device, if necessary, to remove

from the heat exchanger.

4. Re-install screw in hole underneath heat exchanger inlet.

NOTE: It is VERY IMPORTANT to reinstall the NOx bracket

mounting screw.

5. Repeat steps for each heat exchanger.

A02195

Fig. 19 -- Nox Device Removal

ORIFICE SELECTION/DERATE

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. 20.)

CAUTION

BURNER

ORIFICE BURNER

ORIFICE

A96249

Fig. 20 -- Burner Orifice

Refer to conversion kit rating plate 337704--204 to determine

main burner orifice size. (See Fig. 21.)

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.

A13057

Fig. 21 -- Conversion Kit Rating Plate

INSTALL ORIFICES

1. Install main burner orifices. Do not use Teflon tape. Fin-

ger-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: There are 2 sets of mixer screws. One set is for

Condensing gas furnaces, the other set is for Non-condensing gas

furnaces. Use only the parts in the bag marked “REQUIRED

FOR THE CONVERSION OF NON--CONDENSING GAS

FURNACES TO PROPANE GAS”

See Fig. 22 to verify you have the correct set of mixer screws.

1. Locate the dimple on each burner venturi tube. If you can-

not locate the dimple, refer to Fig. 23 for location of the

mixer screw.

2. Drill a 5/64--in (1.9 mm) hole in each dimple with a sup-

plied drill bill.

3. 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).

4. The screw head should be flush with the top of the burner

venturi.

A11397

Fig. 22 -- Gas Conversion Kit

A06432

Fig. 23 -- Mixer Screw Location

REINSTALL BURNER ASSEMBLY

To reinstall burner assembly:

1. Attach flame sensor to burner assembly.

2. Install HSI and bracket to burner assembly.

3. Insert one-piece burner in slot on sides of burner box and

slide burner back in place.

4. Reattach HSI wires to HSI.

5. Verify igniter to burner alignment.

6. Verify igniter to burner alignment.

For Silicon Nitride igniters, see Fig. 24 and 25.

For Silicon Carbide igniters, see Fig. 26.

Reattach Flame sensor wire to Flame Sensor.

9/32”

7.1mm

5/16”

7.9mm

A05025

Fig. 24 -- Igniter Position -- Side View

1-7/8

(47.6 mm)

A05026

Fig. 25 -- Igniter Position -- Top View

A93347

Fig. 26 -- Silicon Carbide Igniters

CONVERT GAS VALVE

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 left this way, sooting and

corrosion will occur leading to early heat exchanger failure.

CAUTION

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.

!WARNING

1. Refer to Fig. 27.

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. 27.)

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. 27.)

9. Do not install regulator seal caps at this time.

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

A13048

Fig. 27 -- Single Stage Gas Valve

A05071

Fig. 28 -- Redundant Auto Gas Valve

REGULATOR SPRING

(PROPANE – WHITE, 6 TURNS

NATURAL – SILVER, 10 TURNS)

REGULATOR

ADJUSTMENT

SCREW

REGULATOR

SEAL CAP

GAS PRESSURE

REGULATOR

ADJUSTMENT

INLET

PRESSURE TAP

ON AND

OFF SWITCH

MANIFOLD

PRESSURE TAP

A01073

Fig. 29 -- Single--Solenoid Redundant Auto Gas Valve

INSTALL MANIFOLD

1. Refer to Fig. 16 &17.

2. Align the orifices in the manifold assembly with the sup-

port rings on the end of the burner.

3. Insert the orifices in the support rings of the burners. Man-

ifold 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.

5. Install the remaining manifold mounting screws.

6. Connect the wires to both rollout switches.

7. Connect the wires to the flame sensor and hot surface ig-

niter.

8. Connect the connector harness to gas valve.

NOTE: Use only propane-resistant pipe dope. Do not use Teflon

tape.

9. Insert the gas pipe through the grommet in the casing. Ap-

ply 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.

10. With a back-up wrench on the inlet boss of the gas valve,

finish tightening the gas pipe to the gas valve.

11. Turn gas on at electric switch on gas valve.

INSTALL LOW GAS PRESSURE SWITCH

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.

!WARNING

NOTE: Use propane-gas-resistant pipe dope on all connections

to prevent gas leaks. DO NOT use Teflon tape. See Fig. 30.

1. Be sure main gas and electric supplies to furnace are off.

2. Remove 1/8-in. (3 mm) pipe plug from inlet pressure tap

on gas valve. DO NOT DISCARD 1/8-in. (3 mm) PLUG.

3. Apply pipe dope sparingly to one end of 1/8-in. (3 mm) x

2--in. (50.8 mm) brass nipple (provided in kit) and install

the doped end in 1/8-in. (3 mm) tapped opening in gas

valve inlet pressure-tap. Tighten fitting with a small

wrench.

4. Apply pipe dope sparingly to opposite end of the 1/8-in.

(3 mm) x 2--in. (50.8 mm) brass coupling (provided in

kit). Install the female end of the female x female x male

tee on the brass coupling.

5. Tighten tee finger tight. Use a small open-end wrench for

final tightening. The male end of the tee should be facing

you.

6. Apply pipe dope sparingly to male end of brass tee.

7. Install propane low gas pressure switch (provided in kit)

on male end of the female x female x male tee.

8. Tighten switch finger tight.

9. Use a small open-end wrench on base of pressure switch

for final tightening. The contacts of the LGPS should be

pointing toward the inducer motor when complete.

10. The remaining opening on the brass street tee is the new

gas valve inlet pressure tap.

11. Install manometer fitting to the open end of the brass street

tee. Or if installation is to be completed later, apply pipe

dope to inlet pressure plug from gas valve and install in

open end of brass street tee.

12. Check all fittings for leaks after gas supply has been

turned on.

FIRE AND 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.

!WARNING

RISQUE D’EXPLOSION ET D’INCENDIE

Cet avertissement peut entraîner de la mort, des blessures et/ou

des dégâts matériels.

Ne jamais examiner pour les fuites de gaz avec une flamme

vive. Utilisez plutôt un savon fait specifiquement pour la

détection des fuites de gaz pour verifier tous les connections.

Un incendie ou une explosion peut entrainer des dommages

matériels, des blessures ou la mort.

!AVERTISSEMENT

2” Brass Nipple

Low Gas

Pressure Switch

Female x Female x Male Tee

1/8” NPT Pipe Plug

For inlet pressure tap

A11398

Fig. 30 -- 80% Low Gas Pressure Switch

MODIFY PRESSURE SWITCH WIRING

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.

CAUTION

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.

PRUDENCE

Refer to Fig. 31.

1. Locate the orange wire in the kit with an insulated straight

female spade terminal and an insulated straight male ter-

minal on the other end.

2. Connect the female terminal to a terminal on the Low Gas

Pressure Switch.

3. Locate the orange wire in the kit with an insulated straight

female spade terminal and an insulated female flag termin-

al on the other end.

4. Connect both straight female terminals of the orange wires

to the terminals on the Low Gas Pressure Switch.

5. Disconnect yellow wire from Low Heat Pressure Switch

LPS on inducer housing.

6. Connect the yellow wire from the Low Heat Pressure

Switch to the orange wire with the insulated male spade

terminal.

7. Connect the orange wire from the Low Gas Pressure

Switch to the terminal on the Low Heat Pressure Switch.

8. Route orange wires along wire harness. If possible, secure

with wire tie provided in kit.

A11394

Fig. 31 -- 80% Pressure Switch Wiring

CHECK INLET GAS PRESSURE

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.

CAUTION

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. Verify manometer is connected to inlet pressure tap on gas

valve.

2. Turn on furnace power supply.

3. Turn gas supply manual shutoff valve to ON position.

4. Turn furnace gas valve switch to ON position.

5. Jumper R--W thermostat connections on control.

6. When main burners ignite, confirm inlet gas pressure is

between 12.0--in. W.C. and 13.6--in. W.C.

7. Remove jumper across R--W thermostat connections to

terminate call for heat.

8. Turn furnace gas valve switch to OFF position.

9. Turn gas supply manual shutoff valve to OFF position.

10. Turn off furnace power supply.

11. Remove manometer.

12. Apply pipe dope sparingly to end of inlet gas pipe plug

and install into unused end of 1/8 in. tee. Use a small

back--up wrench on tee when tightening gas inlet pipe

plug.

CHECK FURNACE AND MAKE ADJUSTMENTS

FIRE AND 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.

!WARNING

RISQUE D’EXPLOSION ET D’INCENDIE

Cet avertissement peut entraîner de la mort, des blessures et/ou

des dégâts matériels.

Ne jamais examiner pour les fuites de gaz avec une flamme

vive. Utilisez plutôt un savon fait specifiquement pour la

détection des fuites de gaz pour verifier tous les connections.

Un incendie ou une explosion peut entrainer des dommages

matériels, des blessures ou la mort.

!AVERTISSEMENT

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.

!WARNING

1. Be sure main gas and electric supplies to furnace are off.

2. Remove 1/8-in. (3 mm) pipe plug from manifold pressure

tap on downstream side of gas valve.

3. Attach manometer to manifold pressure tap on gas valve.

See Fig. 27, 28 & 29.

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 for input rate. The input rate for propane is

determined by manifold pressure and orifice size.

The gas valve must be set for Low Heat first and then set for High

heat on 2--stage and variable--speed 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.

SETGASINPUTRATE

1. Jumper R and W thermostat connections to call for heat.

(See Fig. 14.)

2. Check manifold orifices for gas leaks when main burners

ignite.

3. Adjust gas manifold pressure. Refer to conversion kit rat-

ing plate 339852--204, Fig. 21.

4. Turn adjusting screw counterclockwise (outwards) to de-

crease manifold pressure or clockwise (inwards) to in-

crease manifold pressure.

NOTE: Gas valve regulator seal cap MUST be in place when

checking input rate.

5. When correct input is obtained,main burner flame should

be clear blue, almost transparent. Be sure regulator seal

cap is in place when finished. See Fig. 15.

6. Remove jumper across R and W thermostat connections to

terminate call for heat.

7. Turn furnace gas valve control switch or control knob to

OFF position.

8. Turn off furnace power supply.

9. Remove manometer and replace manifold pressure tap

plug.

NOTE: Use propane--gas--resistant pipe dope to prevent gas

leaks. DO NOT use Teflon tape.

10. Turn furnace gas valve control switch or control knob to

ON position.

11. Turn on furnace power supply. Set room thermostat to call

for heat.

12. Check manifold pressure tap plug for gas leaks when main

burners ignite.

13. Observe unit operation through 2 complete heating cycles.

14. See Sequence of Operation in furnace Installation, Start--

up and Operating Instructions.

15. Set room thermostat to desired temperature.

After making the required manifold pressure adjustments, check

and adjust the furnace temperature rise per the furnace installation

instructions.