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BOILER MODEL
NUMBER
No. of Sec.
Intermittent
Ignition w/Vent
Damper
UH1603HSID
UH1604HSID
UH1605HSID
UH1606HSID
UH1607HSID
UH1608HSID
UH1609HSID
* 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.
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.
RATINGS AND CAPACITY
Table 1 - Ratings and Capacities
Fuel Type
*MBTUH
3
Natural Gas
4
Natural Gas
5
Natural Gas
6
Natural Gas
7
Natural Gas
8
Natural Gas
9
Natural Gas
Heating
Input
Capacity
AFUE(%)
*MBTUH
75
62
112
91
150
122
187
153
225
183
262
214
299
245
3
†Natural Gas
Net AHRI
Rating *Mbh
82.7
47
82.0
68
82.0
92
82.0
115
82.0
137
82.0
161
82.0
184
Net AHRI Rating
Sq. Ft. Radiation
195
283
383
479
570
670
766
240011556 REV. E [01/09/2019]
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