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Part number 550-110-260/0200
24
GOLD CGs Gas-Fired Water Boiler
Gas piping5
Connecting gas supply piping to boiler
Figure 14 Gas supply piping
Venting and combustion air4
CGs Boiler must be vented and supplied with
combustion and ventilation air
as described in
Weil-McLain CGs Venting Supplements packed in
envelope assembly with boiler. Failure to do so will
cause severe personal injury or death.
Use direct vent (sealed combustion) if combustion
air quality cannot be assured to be free of
contaminants. Refer to page 9 for a list of potential
contaminants and locations likely to contain them.
Operating the boiler with contaminated air will damage
the boiler sections and vent, resulting in possible boiler
failure or leakage of flue products, causing severe
personal injury, death or substantial property damage.
Install vent piping and air piping
(if used) per appropriate Venting
Supplement included in boiler
envelope assembly.
Refer to Venting Supplements and
to manual section 1 regarding
requirements for:
• vent system
• combustion air openings
• combustion air quality
1. Remove jacket front panel and refer to
Figure 14
to pipe gas to boiler.
a. Install drip leg at inlet of gas connection to
boiler. Where local utility requires drip leg to
be extended to the floor, use appropriate length
of pipe between cap and tee.
b. Install ground joint union for servicing, when
required.
c. Install manual shutoff valve in gas supply
piping outside boiler jacket when required by
local codes or utility requirements.
d. In Canada — When using manual main shutoff
valve, it must be identified by the installer.
26020
Manual main
shutoff gas valve
(when required)
Ground joint union
(when required)
Nipple
Tee
Cap