Gas Piping - Weil-McLain CGa 2 Series Manual

CGa Series 2 Gas-Fired Water Boiler — Boiler Manual
4

Gas piping

Connect gas supply piping to boiler
a. at inlet of gas connection to boiler. Where local
utility requires drip leg to be extended to the floor, use appropri-
ate length of pipe between cap and tee.
b.
c.
jacket when required by local codes or utility requirements.
d. — When using manual main shutoff valve, it
by the installer.
2. with hangers, not by boiler or its accessories.
3. from gas supply piping.
.
a.
b.
gas leaks can cause severe personal injury, death or
substantial property damage.
5.
to male threads of pipe joints so that pipe dope does not block gas flow.
in severe personal injury, death or substantial property
damage.
Table 4 Pipe capacity for 0.60 specific gravity natural gas
Capacity of pipe for pipe size of:
Gas pipe
(Capacity in cubic feet gas per hour)
length
(feet)
½"
10 132
20 92
30 73
40 63
50 56
75 45
100 38
150 31
26
to pipe gas to boiler.
for servicing, when required.
in gas supply piping outside boiler
during any pressure testing at
Apply sparingly only
as detailed above can result
¾" 1" 1¼"
278 520 1050
190 350 730
152 285 590
130 245 500
115 215 440
93 175 360
79 150 305
64 120 250
Natural Gas:
on rated boiler input (divide by 1,000 to obtain cubic
feet per hour).
2. Inlet pressure required at gas valve inlet:
-
line
dur-
Propane Gas:
1. Contac
—
lockup gas pressure regulator.
2. Adjust propane supply regulator provided by gas
3. Inlet pressure required at gas valve inlet:
Gas supply piping
1½"
1600
1100
860
760
670
545
460
380
is only for gas with
For additional gas pipe
Adjust for
Part Number 550-142-900/1016