GOLD CGa Gas-Fired Water Boiler — Boiler Manual
26
Part Number
550-101-009/0107
Gas piping
Natural Gas:
1. Refer
to
4ABLE
FORPIPELENGTHANDDIAMETER"ASE
on rated boiler input (divide by 1,000 to obtain cubic
feet per hour).
4ABLE
is only for gas with
SPECIlC
GRAVITYWITHAPRESSUREDROPTHROUGHTHE
GAS PIPING OF v WC
For additional gas pipe
SIZINGINFORMATIONREFERTO!.3):OR"
OR"FOR#ANADIANINSTALLATIONS
2. Inlet pressure required at gas valve inlet:
s -AXIMUMvWC
s -INIMUMvWC
s -ANIFOLDGASPRESSUREvWC
)NSTALLLOCKUPGASPRESSUREREGULATORINSUPPLY
line
IFINLETPRESSUREEXCEEDSvWC
Adjust for
vWCMAXIMUM
Propane Gas:
#ONTACTGASSUPPLIERTOSIZEPIPESTANKSAND
lockup gas pressure regulator.
2. Adjust propane supply regulator provided by gas
SUPPLIERFORvWCMAXIMUMPRESSURE
3. Inlet pressure required at gas valve inlet:
s -AXIMUMvWC
s -INIMUMvWC
s -ANIFOLDGASPRESSUREvWC
&IGURE
Gas supply piping
Table 4
Pipe capacity for 0.60 specific gravity natural gas
Gas pipe
length
(feet)
Capacity of pipe for pipe size of:
(Capacity in cubic feet gas per hour)
½"
¾"
1"
1¼"
1½"
10
132
278
520
1050
1600
20
92
190
350
730
1100
30
73
152
285
590
860
40
63
130
245
500
760
50
56
115
215
440
670
75
45
93
175
360
545
100
38
79
150
305
460
150
31
64
120
250
380
4
Connect gas supply piping to boiler
1. Remove jacket front panel and refer to
&IGURE
to pipe gas to boil-
er.
a.
)NSTALLDRIPLEG
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.
)NSTALLGROUNDJOINTUNION
for servicing, when required.
c.
)NSTALLMANUALSHUTOFFVALVE
in gas supply piping outside boiler
jacket when required by local codes or utility requirements.
d.
)N#ANADA
— When using manual main shutoff valve, it
MUSTBE
IDENTIlED
by the installer.
2.
3UPPORTPIPING
with hangers, not by boiler or its accessories.
3.
0URGEALLAIR
from gas supply piping.
"EFOREPLACINGBOILERINOPERATION
CHECKBOILERANDITSGASCONNEC
TIONFORLEAKS
.
a.
#LOSEMANUALMAINSHUTOFFVALVE
during any pressure testing at
LESSTHANvWC
b.
$ISCONNECTBOILERANDGASVALVEFROMGASSUPPLYPIPING
dur-
INGANYPRESSURETESTINGGREATERTHANvWC
$ONOTCHECKFORGASLEAKSWITHANOPENmAME
—
Use bubble test. Failure to use bubble test or check for
gas leaks can cause severe personal injury, death or
substantial property damage.
5.
5SE PIPE DOPE COMPATIBLE WITH PROPANE GASES
Apply sparingly
only to male threads of pipe joints so that pipe dope does not block gas
flow.
&AILURETOAPPLYPIPEDOPE
as detailed above can result
in severe personal injury, death or substantial property
damage.
