Download Williamson-Thermoflo w 80 Operating instructions

GSA Gas-Fired Steam Boilers – Boiler Manual
12 Ratings
DOE
Boiler
Model
Number
0–2,000
feet altitude
Input
(Btuh)
(Note 3)
DOE Heating
Capacity
(Output) (Btuh)
(Note 1)
2,000–4,500
feet altitude
(Canada)
Input
(Btuh)
(Output)
(Btuh)
Net
AHRI Ratings
Sq. Ft.
Steam
(Note 4)
Steam
Btuh
Boiler Water
content
(gallons)
(to Waterline)
(Note 2)
DOE
Seasonal
efficiency
(% A.F.U.E.)
Chimney
and
breeching
size
(Note 3)
GSA-075
75,000
62,000
67,500
56,000
196
47,000
8.4
83.0
5"I.D. x 20'
GSA-100
100,000
83,000
90,000
75,000
258
62,000
8.4
82.9
5"I.D. x 20'
GSA-125
125,000
104,000
112,500
93,000
325
78,000
9.8
82.9
6"I.D. x 20'
GSA-150
150,000
125,000
135,000
112,000
392
94,000
9.8
82.9
6"I.D. x 20'
GSA-175
175,000
145,000
157,500
131,000
454
109,000
11.2
82.8
7"I.D. x 20'
GSA-200
200,000
167,000
180,000
150,000
521
125,000
11.2
82.8
7"I.D. x 20'
GSA-250
250,000
209,000
225,000
188,000
654
157,000
12.6
83.0
8"I.D. x 20'
GSA-300
299,000
247,000
270,000
216,000
770
185,000
14.0
82.4
8"I.D. x 20'
Notes
1. Based on standard test procedures prescribed by the United States Department of
Energy.
2. 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 1.333. An additional
allowance should be made for unusual piping and pickup loads.
3. See information at right for model number suffixes. Letters shown are model number
suffixes. An “N” after the model number designates natural gas.
4. Contact your local dealer regarding information and parts for high altitude applications.
Part Number 550-110-738/1012
31