Part Number
550-101-009/0107
67
GOLD CGa Gas-Fired Water Boiler — Boiler Manual
Ratings
)NSTALL#'ABOILERSFORRESIDENTIALRADIANTPANELSYSTEMSCONVERTEDGRAVITYHEATINGSYSTEMSOROTHERLOWWATER
temperature applications per instructions in this manual to avoid damage due to condensation.
#'ABOILERSARE#3!DESIGNCERTIlEDFORINSTALLATIONONCOMBUSTIBLEmOORING
#'ABOILERSARE!3-%RATEDFORPSIGWORKINGPRESSURE
Table 7
Ignition system model suffixes
13b
Boiler
model
number
Input
(Btuh)
DOE
Heating
capacity
(Btuh)
0–2,000 feet
altitude
2,000–4,500 feet
altitude
Net
I=B=R
ratings
(Btuh)
Boiler
water
content
(gallons)
DOE
Seasonal efficiency
(% A.F.U.E)
Chimney
and
breeching
size
Input
(Btuh)
Output
(Btuh)
Input
(Btuh)
Output
(Btuh)
SPDN
SPDL
PIDN
(Note 1)
(Note 2)
(Note 3)
CGa-25
52,000
44,000
52,000
44,000
46,800
39,000
38,000
1.5
81.5
83.3
84.0
4"I.D. x 20’
CGa-3
70,000
59,000
70,000
59,000
63,000
53,000
51,000
1.5
81.6
83.7
84.0
4"I.D. x 20’
CGa-4
105,000
88,000 105,000
88,000
94,500
79,000
77,000
2.1
81.7
83.7
84.0
5"I.D. x 20’
CGa-5
140,000
117,000 140,000
117,000 126,000 105,000 102,000
2.7
81.8
83.7
83.5
6"I.D. x 20’
CGa-6
175,000
146,000 175,000 146,000 157,500 131,000 127,000
3.3
81.9
83.6
83.2
6"I.D. x 20’
CGa-7
210,000
175,000 210,000 175,000 189,000 157,000 152,000
3.8
82.0
83.6
83.0
7"I.D. x 20’
CGa-8
245,000
204,000 245,000 204,000 220,500 183,000 177,000
4.4
82.1
83.6
82.7
7"I.D. x 20’
Notes
1. See Table 7 for available pilot systems. The suffix shown in the table is added to the boiler model number. (Not
available for millivolt systems.)
2. Based on standard test procedures prescribed by the United States Department of Energy.
3. Net I=B=R ratings are based on net installed radiation of sufficient quantity for the requirements of the building
and nothing need be added for normal piping and pickup. Ratings are based on a piping and pickup allowance of
1.15. An additional allowance should be made for unusual piping and pickup loads.
Pilot ignition system
Natural gas
Propane gas
Standing pilot
SPDN
SPDL
Spark-ignited pilot
PIDN
Not available
DOE
