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BOILER RATINGS AND CAPACITIES
Figure 1 - Dimensions
BOILER SPECIFICATIONS
Model No.
Type of Ignition
Natural gas Propane
AFUE %
Number of Sections
Flue Size Connection
Diameter in. (mm)
round
Sipping Weight Lbs.
(kg) Package
Supply & Return Connec-
tion NPT in. (mm)
Drain Connection NPT
in. (mm)
Input *MBH (KW)
Heating Capacity
*MBH (KW)
Net I=B=R *MBH
(KW)
Net I=B=R Rating
sq.ft. Radiation
Input *MBH (KW)
Heating Capacity
*MBH (KW)
Net I=B=R
*MBH(KW)
Net I=B=R Rating
sq.ft. Radiation
GSB8-075E Electronic
75,000
(22.0)
62,000
(18.5)
47,000
(14.7)
196
(18.2)
70,000
(20.0)
58,000
(16.1)
44,000
(13.0)
183
(17.0)
82.7
3
5
(12.7)
325
(147)
2-1/2
(64.0)
3/4
(19.0)
GSB8-075S Standing Pilot 81.1
GSB8-112E Electronic
112,500
(33.0)
91,000
(26.7)
68,000
(19.9)
283
(26.3)
105,000
(30.8)
85,000
(24.9)
64,000
(18.6)
267
(24.8)
80.4
4
6
(15.2)
404
(183)
GSB8-112S Standing Pilot 78.8
GSB8-150E Electronic
105,000
(44.0)
122,000
(35.7)
92,000
(27.0)
383
(35.6)
140,000
(41.0)
114,000
(33.4)
86,000
(25.2)
358
(33.3)
80.6
5
6
(15.2)
483
(219)
GSB8-150S Standing Pilot 79.2
GSB8187E Electronic
187,000
(54.8)
153,000
(44.8)
115,000
(33.7)
479
(44.5)
175,000
(51.3)
143,000
(41.9)
107,000
(31.4)
446
(41.4)
80.9
6
7
(17.8)
564
(256)
GSB8187S Standing Pilot 79.6
GSB8-225E Electronic
225,000
(65.9)
183,000
(53.6)
137,000
(40.1)
571
(53.0)
210,000
(61.5)
171,000
(50.1)
128,000
(37.5)
553
(51.4)
81.1
7
7
(17.8)
649
(294)
GSB8-225S Standing Pilot 80.1
GSB8-262E Electronic
262,000
(76.9)
214,000
(62.7)
161,000
(47.2)
671
(62.3)
245,000
(71.8)
200,000
(58.6)
150,000
(44.0)
625
(58.1)
81.3
8
719
(326)
GSB8-262S Standing Pilot 80.5
GSB8-299E Electronic
299,000
(87.6)
245,000
(71.8)
184,000
(53.9)
767
(71.3)
280,000
(82.0)
229,000
(67.1)
172,000
(50.4)
717
(66.7)
81.5
9
800
(363)
GSB8-299S Standing Pilot 80.9
* MBH = 1,000 Btuh. Btuh = British Thermal Unit Per Hour.
** Add 5½" to height for Vent Damper
† For altitudes above 2,000 ft. reduce input rate 4% for each 1,000 ft. above sea level.
Heating Capacity is based on DOE (Department of Energy) test procedure.
(1) Add model number suffi x 'P' for Propane Gas.