3
RATINGS AND CAPACITY
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
195
Propane
70
58
82.7
44
183
PSB-4D
4
Natural Gas
112
91
82.0
68
283
PSB-5D
5
Natural Gas
150
122
82.0
92
383
PSB-6D
6
Natural Gas
187
153
82.0
115
479
PSB-7D
7
Natural Gas
225
183
82.0
137
570
PSB-8D
8
Natural Gas
262
214
82.0
161
670
PSB-9D
9
Natural Gas
299
245
82.0
184
766
* 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 3 Section Only.
PN 14683003 Rev. O [10/01/2021]
