67
12.1 Ratings and Capacities
Constructed and hydrostatically tested for maximum
allowable working pressure of 50 psig (pounds per
square inch gauge) (115 kPa) in accordance with ASME
Boiler and Pressure Vessel Code, Section IV, Rules for
Construction of Heating Boilers.
• In USA,
for elevations beyond 2,000-ft reduce
input by 4% for each 1,000-ft above sea level in
accordance with National Installation Code ANSI
Z223.1
• In Canada,
input rate is reduced by 10% for
elevations 2,000-ft to 4,500-ft. Contact Provincial
Authority having jurisdiction for Installations above
4500-ft (1350m) above sea level.
TABLE 14: SEA LEVEL RATINGS
NATURAL AND PROPANE GASES
Model
Number
Input, (MBH)
(1)
Heating Capacity
(MBH)
(1)(2)
Net AHRI Rating,
Water (MBH)
(1)(3)
AFUE
(2)
Thermal
Efficiency
Maximum
Minimum
GMHB227
227
45
210
183
95.0
GMHB380
379
62
348
303
95.0
(1)
1000
Btu/hr (British Thermal Units Per Hour)
(2)
Heating Capacity, Thermal Efficiency, 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.
PN 240012369, REV A [08/31/2018]
12 - RATINGS AND CAPACITIES
Содержание GMHB227
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