SECTION 7: INSTALLING GAS PIPING
15
STEP 1: GAS MAIN & GAS HEADERS
1. Gas main and gas headers must be sized to provide a
total maximum pressure drop of 0.3" W.C. (natural gas) or
0.5" W.C. (propane) between gas meter and each mod-
ule’s power gas burner. If shop drawings with approved
pipe sizes are not available, use sizing guidelines recom-
mended in Appendix B at the rear of this manual.
2. Gas main from meter to gas headers must have a
non-restrictive lubricated plug valve close to the mod-
ules as well as a full-sized sediment trap at the low
point in the gas main. Use a vertical rise sediment trap
that is a minimum of three times the gas main pipe
diameter.
3. The gas header is the manifold to
which each module’s burner is con-
nected; the connection at each bur-
ner inlet requires a ground joint union.
If total equivalent pipe length, straight
pipe plus fittings, from burner inlet to
header is 5-ft or less, use a pipe diam-
eter that matches burner inlet; over 5-
ft, calculate diameter.
4. All piping must be supported with
floor supports or by hangers, not by
boilers or accessories. Always follow
good piping practices. Pipe joint com-
pound must be compatible with gas
being used. Check local codes and
utilities for any special requirements.
SECTION 6: INSTALLING BURNER
Install each module’s burner, following manufacturer’s installation instructions packaged with the burner.
FROM
METER
LUBRICATED
PLUG VALVE
GAS HEADER
GROUND JOINT UNION
SUPPORT
GAS MAIN
SEDIMENT
TRAP
SUPPORT