3
RATINGS AND CAPACITY
P/N 14683003, Rev. D [08/03/2015]
Net AHRI steam Ratings shown are based on a piping and pickup allowance of 1.333.
Base selection of boiler size on "Net AHRI Rating" being equal to or greater than installed radiation in square feet.
Consult manufacturer before selecting a boiler for installations having unusual piping and pickup requirements,such as
intermittent system operation, exhaust piping systems, etc.
Table 1 - Ratings and Capacities
BOILER MODEL
NUMBER
No. of
Sec.
†Natural Gas
Intermittent
Ignition w/Vent
Damper
Fuel Type
Input
*MBTUH
Heating
Capacity
*MBTUH
AFUE(%)
Net AHRI
Rating *Mbh
Net AHRI
Rating Sq. Ft.
(1)
PSB-3D
3
Natural Gas
75
62
82.7
47
196
Propane
70
58
82.7
44
183
(1)
PSB-4D
4
Natural Gas
112
91
82.0
68
283
Propane
105
85
80.4
64
267
(1)
PSB-5D
5
Natural Gas
150
122
82.0
92
383
Propane
140
114
80.6
86
358
(1)
PSB-6D
6
Natural Gas
187
153
82.0
115
479
Propane
175
143
80.9
107
446
(1)
PSB-7D
7
Natural Gas
225
183
82.0
137
571
Propane
210
171
81.1
128
533
(1)
PSB-8D
8
Natural Gas
262
214
82.0
161
671
Propane
245
200
81.3
150
625
(1)
PSB-9D
9
Natural Gas
299
245
82.0
184
767
Propane
280
229
81.5
172
717
* MBH = 1,000 Btuh. Btuh = British Thermal Unit Per Hour.
† 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 suffix 'P' for Propane Gas.