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Gas Piping Checks
WARNING
To avoid the possibility of explosion or fire, never use a match or open flame to test for leaks.
CAUTION
To prevent personal injury or property damage due to fire, the following instructions must be performed regarding
gas connections, pressure testing, location of shutoff valve and installation of gas piping.
Before placing unit in operation, leak test the unit and gas connections.
Check for leaks using an approved chloride-free soap and water solution, an electronic combustible gas detector, or other
approved testing methods.
NOTE: Never exceed specified pressures for testing. Higher pressure may damage the gas valve and cause
subsequent overfiring, resulting in heat exchanger failure.
Disconnect this unit and shutoff valve from the gas supply piping system before pressure testing the supply piping system
with pressures in excess of 1/2 psig (3.48 kPa).
Isolate this unit from the gas supply piping system by closing its external manual gas shutoff valve before pressure testing
supply piping system with test pressures equal to or less than 1/2 psig (3.48 kPa).
Gas Supply and Piping
Propane Gas and/or High Altitude Installations
WARNING
Possible death, personal injury or property damage may occur if the correct conversion kits are not installed. The
appropriate kits must be applied to insure safe and proper furnace operation. All conversions must be performed
by a qualified installer or service agency.
This furnace is shipped from the factory configured for natural gas at standard altitude. Propane gas installations require
an orifice change to compensate for the energy content difference between natural and propane gas.
High altitude installations may require both a pressure switch and an orifice change. These changes are necessary to
compensate for the natural reduction in the density of both the gas fuel and the combustion air at higher altitude.
Refer to the product Specification Sheet for a tabular listing of appropriate manufacturer’s kits for propane gas and/or high
altitude installations. The indicated kits are required to insure safe and proper furnace operation. All conversions must
be performed by a qualified installer or service agency.
