Installation
GAS PIPE SIZING
Check with your local gas supplier to determine total gas load for all your gas appliances. Size pipe accordingly.
GAS PIPING
All piping must comply with local codes. In the absence of local codes, follow the national fuel gas code ANSIZ-
233.1.A sediment trap or drip leg must be installed in the supply line to burner. (See Fig. 19)
A union must be installed in the gas line. It should be adjacent to and upstream from the control manifold. It should be downstream from the manual main
A manual
The building structure should not be weakened by the installation of the gas piping. The piping should not be supported by other piping. It should be firmly supported with pipe hooks, straps, bands or hangers. Butt or lap welding pipe should not be bent.
The gas piping should be installed so as to prevent an accumulation of condensation. It must be protected against freezing. A horizontal pipe should pitch so 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.
After the piping and meter connections have been checked for leaks, purge system of air. Be sure to relight all pilots on other appliances.
The gas line should be a separate supply direct from the meter to burner. A new pipe should be used. Locate it so a minimum amount of work will be required in future servicing. The piping should be installed so it is durable, substantial and gas tight. It should be clear and free from cutting burrs and defects in structure or threading. Cast iron fittings or aluminum tubing should not be used for the main gas circuit. Joint compounds (pipe dope) should be used sparingly on male threads only. The joint compounds should be approved for all gases.
Method of Installing a
Tee Fitting Sediment Trap
FIG. 19
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