Table 8 - Sea Level Ratings
Size
CHB-100
CHB-130
1000 Btu/hr (British Thermal Units Per Hour)
(1)
Heating Capacity and AFUE (Annual Fuel Utilization Effi ciency) are based on DOE (Department of Energy) test
(2)
procedures.
Net AHRI Ratings based on piping and pickup allowance of 1.15. Contact Technical Support before selecting boiler for
(3)
installations having unusual piping and pickup requirements, such as intermittent system operation, extensive piping systems,
etc.
12.1 Ratings and Capacities
• Constructed and hydrostatically tested for maximum
allowable working pressure of 43.5 psig (pounds per
43.5 psig (.30MPa)
square inch gauge)
with ASME Boiler and Pressure Vessel Code, Section IV,
Rules for Construction of Heating Boilers.
• USA - Input rates are derated 4% for each 1000 ft (300m)
above sea level, beyond 2000 ft (600m).
• CANADA - Ratings in table 13 used for elevations up to 2000
ft (600m) above sea level
- For elevations between 2000 ft (600m) and 4500
ft (1350m), derate 10% using high altitude kit.
- Contact Provincial authority having jurisdiction
for installations above 4500 feet (1350 m) above
sea level.
EN
12 - RATINGS AND CAPACITIES
SEA LEVEL RATINGS
NATURAL AND PROPANE GASES
Boiler Input Rate
(MBH)
(1)
Maximum
Minimum
100
31.5
130
43.5
in accordance
Heating
Rating, Water
Capacity
(MBH)
(1)(2)
85
110
34
Net AHRI
AFUE
(MBH)
(1)(3)
73.0
85
96.0
85
(2)