45
12.1
Ratings and Capacities
• Constructed and hydrostatically tested for maximum
allowable working pressure of 150 psig (pounds per
square inch gauge) (1035 kPa) in accordance with ASME
Boiler and Pressure Vessel Code, Section IV, Rules for
Construction of Heating Boilers.
• Ratings used for elevations up to 2000 ft (600m) above
sea level.
•
For elevations between 2000 ft (600m) and 4500 ft
(1350m), install high altitude control kit
• For elevations above 4500 ft (1350m) install high
altitude control kit and :
• USA - Reduce input rate 4% for each 1000 ft
(300m) beyond 4500 ft.
SEA LEVEL RATINGS
NATURAL AND PROPANE GASES
Size
Boiler Input Rate
(MBH)
(1)
Heating
Capacity
(MBH)
(1)(2)
Net AHRI
Rating, Water
(MBH)
(1)(3)
AFUE
(2)
Maximum
Minimum
050
50
10
47
41
95.0
075
75
15
69
60
95.0
100
100
20
92
80
95.0
150
150
30
140
122
95.0
200
200
40
186
162
95.0
(1)
1000
Btu/hr (British Thermal Units Per Hour)
(2)
Heating Capacity and AFUE (Annual Fuel Utilization Efficiency) are based on DOE (Department of Energy) test
procedures.
(3)
Net AHRI Ratings based on piping and pickup allowance of 1.15. Contact Technical Support before selecting boiler for
installations having unusual piping and pickup requirements, such as intermittent system operation, extensive piping systems,
etc.
12 - RATINGS AND CAPACITIES
Table 13 - Sea Level Ratings
PN 240011342 Rev. E [05/31/2018]
