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The gas line should be a separate supply direct from the meter to the burner. It is recommended that new
pipe be used and located so that a minimum amount of work will be required in future servicing. The piping
should be so installed as to be durable, substantial and gas tight. It should be clear and free from cutting
burrs and defects in structure or threading. Aluminum tubing should not be used for the main gas supply.
Joint compounds (pipe dope) should be used sparingly on male threads only and be approved for all
gases.
It is recommended that tables 1, 2, and 3 be used to determine the size pipe to use from the meter to the
burner. The building structure should not be weakened by installation for the gas piping. The piping should
not be supported by the other piping, but should be firmly supported with pipe hooks, straps, bands or
hangers. Butt or lap welded pipe should not be bent. Note: Each elbow, union, and tee adds
approximately 2.5 feet of pipe.
The gas piping should be so installed so as to prevent an accumulation of condensation and it must be
protected against freezing. A horizontal pipe should be pitched so that it grades toward the meter and is
free from sags. The pipe should not be run through or in an air duct or clothes chute. The appliance and its
individual shutoff valve must be disconnected from the gas supply piping system during any pressure
testing of the system at test pressure in excess of 1/2 psig (3447 PaG). The appliance must be isolated
from the gas supply piping system by closing its individual manual shutoff valve during any pressure
testing of the gas supply piping system at test pressures equal to or less than 1/2 psig (3447 PaG).
Supply Line Connection to Burner
Plugged Tapping
Pressure Gage Port
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