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Unitary Products Group

ACCESSORY KIT INSTALLATION INSTRUCTIONS

1NP0580 - PROPANE CONVERSION ACCESSORY

TWO- STAGE INDUCED COMBUSTION FURNACES

MODELS: PT9 / FL9T / FC9T / GM9T / PV9 / FL9V / FC9V / GM9V / XYF9S / XYF9V

PT8 / FL8T / FC8T / GM8T / PV8 / FL8V / FC8V / GM8V / XYF8S / XYF8V

67404 / 035-20507-001 Rev. D (0205)

GENERAL

This kit is intended for the conversion of new equipment only,

from natural gas to propane gas operation.

All unit installations above 2,000 ft. must be field derated as

required by the National Fuel Gas Code, ANSI Z223.1 (latest

edition), or in Canada, CAN/CGA B149.1 or .2 and all other

applicable local codes and utility requirements.

This instruction covers the conversion of this unit when it is

equipped with a White- Rodgers gas valve. The installation

instruction supplied with the unit is to be used for all other

aspects of the installation.

FURNACE CONVERSION

1. Remove the upper access door. On 90+ AFUE units,

remove the burner box cover.

2. Carefully remove the wires from the gas valve and note

their location so they may be properly replaced. Remove

the screws that hold the manifold to the manifold bracket

and slide the manifold off the burners. On 90+ AFUE

units, the manifold is retained by two screws at the bot-

tom and hooks in at the top of the burner box.

This conversion kit is to 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 fol-

lowed exactly, a fire, an explosion or production of carbon monoxide may result causing property damage, personal injury

or loss of life. The qualified service agency is responsible for the proper installation of 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 sup-

plied with the kit.

The conversion of new certified central heating gas appliances must conform to directions outlined in this instruction.

Installation must be made in accordance with the National Fuel Gas Code, ANSI Z223.1-latest edition, unless superseded

by local codes. For Canadian installations, the conversion shall be carried out in accordance with the requirements of the

Provincial authorities having jurisdiction and in accordance with the CAN1-B149.1 and .2 installation codes. The manufac-

turer accepts no responsibility for malfunctions due to improper conversions.

Lo-NOx furnaces requiring propane (LP) gas must have the NOx screens removed prior to operation. Failure to do so may

result in operational problems and/or reduced heat exchanger life. Follow the instructions below for removal of the NOx

screens.

An overpressure protection device, such as a pres-

sure regulator, which conforms to the National Fuel

Gas code, ANSI Z223.1 (U.S.) or CAN- B149.1 or .2

(Canada) and acts to limit the downstream pressure

to value that does not exceed 0.5 PSI (14" w.c.),

must be installed in the gas piping system upstream

of the furnace. Failure to do so may result in a fire or

explosion or cause damage to the furnace or some

of its components.

CONTENTS OF KIT

DESCRIPTION PART NUMBER QTY

Propane Conversion Label 035-11635-000 1

Gas Line Pressure Switch 024-27688-XXX 1

Tapped Gas Pipe Nipple 029-22152-000 1

Main Burner Orifices 029-20423-056 6

Wire Harness 80% (1/4” Terminals) 373-20975-001 1

Wire Harness 90% (1/4” Terminals) 373-20976-001 1

Installation Instructions 035-20507-001 1

Valve Spring Kit 025-38943-000 1

The gas supply shall be shut off prior to disconnect-

ing the electrical power, before proceeding with the

conversion.

Summary of content (4 pages)

PAGE 1
67404 / 035-20507-001 Rev. D (0205) ACCESSORY KIT INSTALLATION INSTRUCTIONS 1NP0580 - PROPANE CONVERSION ACCESSORY TWO- STAGE INDUCED COMBUSTION FURNACES MODELS: PT9 / FL9T / FC9T / GM9T / PV9 / FL9V / FC9V / GM9V / XYF9S / XYF9V PT8 / FL8T / FC8T / GM8T / PV8 / FL8V / FC8V / GM8V / XYF8S / XYF8V This conversion kit is to 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.
PAGE 2
67404 / 035-20507-001 Rev. D (0205) 3. Remove the main burner orifices from the manifold and retain for future use. 4. Install the propane main burner orifices in the manifold and tighten them. After installing a propane orifice in each location, any leftover orifices may be discarded. 5. Reinstall the manifold in the assembly by reversing the removal process. 6. Reconnect the wires to the proper terminals on the gas valve. 12.
PAGE 3
67404 / 035-20507-001 Rev. D (0205) Table 2: Altitude/Propane (LP) Gas Heating Value Orifice Selection PROPANE GAS HEATING VALUE (MANIFOLD PRESSURE 10.0" W.C.) PROPANE ORIFICE @ SEA LEVEL 2516 BTU/CU.FT. RECOMMENDED ORIFICE ALTITUDE (FT. ABOVE SEA LEVEL) 0 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 54 54 54 55 55 55 55 55 56 56 56 55 55 55 55 55 56 56 56 56 56 57 56 56 56 56 57 57 57 58 59 59 60 TEST AND ADJUSTMENTS 8.
PAGE 4
13. During unit operation, the main burner appearance and igniter location should be as shown in Figure 2. 11. If burning at the orifices, excessive yellow tipping, or excessive noise is observed during any phase of main burner operation, verify unit operation. 12.