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All installations and services must be performed by qualified service personnel.
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IV. NATURAL/PROPANE GAS CONVERSION INSTRUCTION
This conversion 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 or explosion may result causing property damage,
personal injury or loss of life. The qualified service agency performing this work
assumes responsibility for the proper conversion of this furnace with this kit."
Any reference to L.P. or propane gas in this manual, any other label, or markings on the furnace is to be
construed to be propane HD-5, a commercial grade of liquefied petroleum gases composed of a minimum
of 90 percent liquid propane (C3H8).
The installation of this conversion kit and any other service done to this furnace must be done only by a
qualified service agency. Follow the installation instructions for the test fire subsequent to this conversion.
The following instructions outline the procedure for converting the existing burner from one type of gas to
another.
When making a gas conversion, it is necessary to replace and/or modify several of the existing
components. Table1,shown below, lists these components and shows the correct model or size for each
type of gas, propane or natural.
Table 1: Components Needed To Make Gas Conversion
CONTENTS
(Natural TO Propane)
(Propane TO Natural)
Main Burner Orifice Diameter
1.5 mm (0.0591 in)
#42 (0.0935 in)
Gas Valve Pressure Regulator Kit
(White-Rodgers Part No.)
92-0659
92-0656
MANIFOLD REMOVAL AND ORIFICE CHANGE
:
Make sure that pipe dope or sealant certified to be resistant to the action of liquefied
petroleum gases is used on all threaded joints.
:
The gas supply shall be shut off prior to disconnecting the electrical power before
proceeding with the conversion.
1. Shut off gas and power to the furnace.
2. Disconnect the furnace from the gas supply system at the union.