Ratings And Capacities - Dunkirk DMG-240 Installation, Operation & Maintenance Manual

Model
Number
DMG-240
1000 Btu/hr (British Thermal Units Per Hour)
(1)
Heating Capacity and AFUE (Annual Fuel Utilization Efficiency) are based on DOE (Department of Energy)
(2)
test 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 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.
12 - RATINGS AND CAPACITIES
TABLE 14: SEA LEVEL RATINGS
NATURAL AND PROPANE GASES
Input, (MBH)
(1)
Maximum Minimum
241 36
Net AHRI Rating,
Heating Capacity
Water (MBH)
(MBH)
(1)(2)
216
Central Heating
0-2,000 Ft
Heating Input MBH
(Gross)
kW
Heat Output Btu/h
(modulating)
kW
Gas Rate A ft3/h
(Natural Gas)
m3/h
Gas Rate E ft3/h
(LPG Gas)
m3/h
Max. CH °F
Water Temp.
°C
(Approx.)
67
AFUE
(1)(3)
188 95.0
MAX
2,000-4,500 Ft
0-610 m 610-1,370 m
241 228
70.6 69.0
216,330 205,410
63.4 60.2
242.6 228.22
6.87 6.46
95.0 90
2.69 2.55
176
80
P/N 240011656, Rev. E [07/30/2018]
(2)
MIN
36
10.5
32,070
9.4
35.9
1.01
13.5
0.38