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(1)
Net I=B=R Rating
Boiler
Horse-
Gross
Model
Power
Output
Sq. Ft.
(MBH)
Steam
V903A
10.3
347
1083
V904A
14.4
483
1508
V905A
19.3
646
2021
V906A
24.1
808
2525
V907A
28.6
959
2996
V908A
33.2
1110
3471
V909A
10.1
1342
4225
V910A
45.6
1528
4867
V911A
51.2
1714
5513
V912A
56.8
1900
6142
(1) Type of Build Prefix: K = Knockdown, A = Knockdown w/Assembled Sections, P = Packaged, F = Packaged and Firetested
Trim Suffix:
S = Steam Boiler, W = Water Boiler
Fuel Suffix:
N = Natural Gas, P = LP Gas, O = Oil, C = Natural Gas/Oil, D = LP Gas/Oil, M - Less Burner
Burner Suffix: B = Beckett, C = Carlin, J = Power Flame JR, P = Power Flame C, W = Webster, L = Less Burner
(2) I=B=R net ratings shown are based on piping and pick-up allowances which vary from 1.333 to 1.289 for steam and 1.15 for water. Consult manufacturer for
installations having unusual piping and pick-up requirements, such as intermittent system operation, extensive piping systems, etc. The burner capacity in
GPH is based on oil having a heat value of 140,000 BTU per gallon.
(3) Firebox volume does not include added volume of 8" extended burner mounting plate (BMP). If 8" BMP is specified (refer to Figure 1), add 0.7 cu. ft. to volume
listed above.
(4) Boiler ratings are based on 12.5% CO
altitudes up to 1000 feet on oil and 2000 feet on gas.
For altitudes above those indicated, the ratings should be reduced at the rate of 4% for each 1000 feet above sea level.
Safety (Relief) Valve Set Pressure: USA Steam Boiler - 15 PSI, USA Water Boiler - 50 PSI
(2)
Burner Input
MBH
MBH
Oil
Gas
Steam
Water
(GPH)
(MBH)
260
302
3.1
447
362
420
4.2
606
485
562
5.6
808
606
703
7.0
1010
719
834
8.3
1198
833
965
9.6
1386
1014
1167
11.6
1674
1168
1329
13.2
1905
1323
1490
14.8
2136
1474
1652
16.4
2367
(oil) and 9.7% CO
(natural gas), + .10" (inches) water column pressure at boiler flue outlet. Ratings shown above apply at
2
2
Optional USA Water Boiler - 30 PSI, 80 PSI (special order)
Canadian Steam Boiler - 15 PSI, Canadian Water Boiler - 45 PSI
Optional Canadian Water Boiler - 30 PSI (special order)
Table I: Boiler Ratings / Data
(3)
Heating
New
Pressure
Surface
Firebox
in Firebox
(Sq. Ft.)
Volume
(In. Wtr.
(Cu. Ft.)
Steam Water
34.2
37.0
3.2
48.6
54.3
4.8
63.0
71.5
6.4
77.5
88.8
7.9
91.9
106.0
9.5
106.3
123.3
11.0
120.7
140.5
12.6
135.1
157.8
14.2
149.5
175.0
15.7
164.0
192.3
17.3
(4)
Water Content
Boiler Weight
(Gal.)
w/Water (Lbs.)
Clmn.)
Steam Water
Steam Water
.33
44.5
66.0
1439
.38
53.0
75.0
1811
.31
61.5
84.0
2184
.38
70.0
93.0
2557
.36
78.5
102.0
2930
.35
87.0
111.0
3303
.35
95.5
120.0
3676
.40
104.0
129.0
4048
.45
112.5
138.0
4421
.49
121.0
147.0
4794
Vent
Dia.
(In.)
1618
7
1995
7
2372
8
2749
8
3126
8
3503
10
3880
10
4257
10
4634
12
5011
12
9
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