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Part Number 550-142-300/0520
64
CGa Series 3 Gas-Fired Water Boiler — Boiler Manual
Dimensions13a
Figure 36 Dimensional drawing — ALL DIMENSIONS IN INCHES
Boiler
model
number
Supply
tapping
(inches NPT)
Return
tapping
(inches NPT)
Gas connection
& manifold size
Note 3
(inches NPT)
“A”
Vent
location
(inches)
“D”
Vent
diameter
(inches)
“W”
Jacket
width
(inches)
“H”
Damper
height
(inches)
CGa-25 1 ¼ 1 ¼ ½ 5 4 10 45-
3/8
CGa-3 1 ¼ 1 ¼ ½ 5 4 10 52-
3/8
CGa-4 1 ¼ 1 ¼ ½ 6-½ 5 13 54-
3/8
CGa-5 1 ¼ 1 ¼ ½ 8 6 16 57-
7/8
CGa-6 1 ¼ 1 ¼ ½ 9-½ 6 19 60-
7/8
CGa-7 1 ¼ 1 ¼ ¾ 11 7 22 62-
1/8
CGa-8 1 ¼ 1 ¼ ¾ 12-½ 7 25 64-
7/8
Note 3:
Gas piping from meter to boiler to be sized per local utility requirements.
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