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Table I: Boiler Ratings / Data
(1) (2) (3) (4)
Boiler
Model
Horse-
Power
I=B=R
Gross
Output
(MBH)
Net I=B=R Rating
I=B=R
Burner Input
Heating
Surface
(Sq. Ft.)
New
Firebox
Volume
(Cu. Ft.)
Pressure
in Firebox
(In. Wtr.
Clmn.)
Water Content
(Gal.)
Boiler Weight
w/Water (Lbs.)
I=B=R
Vent
Dia.
(In.)
Sq. Ft.
Steam
MBH
Steam
MBH
Water
Oil
(GPH)
Gas
(MBH)
Steam Water Steam Water Steam Water
V903A 10.3 347 1083 260 302 3.1 447 34.2 37.0 3.2 .33 44.5 66.0 1439 1618 7
V904A 14.4 483 1508 362 420 4.2 606 48.6 54.3 4.8 .38 53.0 75.0 1811 1995 7
V905A 19.3 646 2021 485 562 5.6 808 63.0 71.5 6.4 .31 61.5 84.0 2184 2372 8
V906A 24.1 808 2525 606 703 7.0 1010 77.5 88.8 7.9 .38 70.0 93.0 2557 2749 8
V907A
28.6 959 2996 719 834 8.3 1198 91.9 106.0 9.5 .36 78.5 102.0 2930 3126 8
V908A 33.2 1110 3471 833 965 9.6 1386 106.3 123.3 11.0 .35 87.0 111.0 3303 3503 10
V909A 10.1 1342 4225 1014 1167 11.6 1674 120.7 140.5 12.6 .35 95.5 120.0 3676 3880 10
V910A
45.6 1528 4867 1168 1329 13.2 1905 135.1 157.8 14.2 .40 104.0 129.0 4048 4257 10
V911A
51.2 1714 5513 1323 1490 14.8 2136 149.5 175.0 15.7 .45 112.5 138.0 4421 4634 12
V912A
56.8 1900 6142 1474 1652 16.4 2367 164.0 192.3 17.3 .49 121.0 147.0 4794 5011 12
(1) Type of Build Prex: K = Knockdown, A = Knockdown w/Assembled Sections, P = Packaged, F = Packaged and Firetested
Trim Sufx: S = Steam Boiler, W = Water Boiler
Fuel Sufx: N = Natural Gas, P = LP Gas, O = Oil, C = Natural Gas/Oil, D = LP Gas/Oil, M - Less Burner
Burner Sufx: 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 I=B=R 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 specied (refer to Figure 1), add 0.7 cu. ft. to volume
listed above.
(4) Boiler ratings are based on 12.5% CO
2
(oil) and 9.7% CO
2
(natural gas), + .10” (inches) water column pressure at boiler ue outlet. Ratings shown above apply at
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
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)