Weil-McLain CGA Series 2 Manual page 65

CGa Series 2 Gas-Fired Water Boiler — Boiler Manual
13b
Ratings
Boiler
model 0 - 2,000 feet
number Altitude
Input
(Note 1)
(Btuh)
52,000
CGa-25
70,000
CGa-3
105,000
CGa-4
140,000
CGa-5
175,000
CGa-6
210,000
CGa-7
245,000
CGa-8
1. Add "PIN" for natural gas boiler - "PIL" for Liquefied Petroleum (propane) gas boiler.
2. Based on standard test procedures prescribed by the United States Department of Energy.
Notes
3. Net AHRI 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.
Table 8 Ignition system model suffixes
Install CGa boilers for residential radiant panel systems, converted gravity heating systems or other low water
temperature applications per instructions in this manual to avoid damage due to condensation.
CGa boilers are CSA design certified for installation on combustible flooring.
CGa boilers are ASME rated for 50 psig working pressure.
Part Number 550-142-900/0519
2,000 - 4,500 feet
Altitude
Output Input Output
(Btuh) (Btuh) (Btuh)
44,000 46,800 39,000
59,000 63,000 53,000
88,000 94,500 79,000
117,000 126,000 105,000
146,000 157,500 131,000
175,000 189,000 157,000
204,000 220,500 183,000
AHRI Certiified Ratings
Seasonal
Efficiency
Heating
Capacity
PIDN-PIDL
Btuh
AFUE
%
(Note 2)
44,000 84.0
59,000 84.0
88,000 84.0
117,000 83.5
146,000 83.2
175,000 83.0
204,000 82.7
Pilot ignition system
Spark-ignite pilot
Chimney
Boiler
water breeching
Net
content
Ratings
Btuh
(gallons)
Inches
(Note 3)
38,000 1.5 4"I.D. x 20'
51,000 1.5 4"I.D. x 20'
77,000 2.1 5"I.D. x 20'
102,000 2.7 6"I.D. x 20'
127,000 3.3 6"I.D. x 20'
152,000 3.8 7"I.D. x 20'
177,000 4.4 7"I.D. x 20'
Natural gas Propane gas
PIDN PIDL
and
size
65