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Benchmark 750-3000 Boiler Installation & Startup Manual
SECTION 3 - START SEQUENCE
3.4.2 BMK 1500 Air/Fuel Valve Position and Energy Input
TABLE 3-3a: BMK 1500 Air/Fuel Valve Position – NATURAL GAS
AIR/FUEL VALVE POSITION
(% OPEN)
16% (Stop Level)
20%
30%
40%
50%
60%
70%
80%
90%
100%
TABLE 3-3b: BMK 1500 Air/Fuel Valve Position – PROPANE GAS
AIR/FUEL VALVE POSITION
(% OPEN)
18% (Stop Level)
20%
30%
40%
50%
60%
70%
80%
90%
100%
OMM-0121_D • GF-205 • 5/9/2019
ENERGY INPUT
(BTU/HR)
76,000 (22.3 kW)
127,000 (37.2 kW)
366,000 (107.2 kW)
629,000 (184.3 kW)
822,000 (240.9 kW)
977,000 (286.2 kW)
1,119,000 (327.9 kW)
1,255,000 (367.7 kW)
1,396,000 (409.0 kW)
1,502,000 (440.1 kW)
ENERGY INPUT
(BTU/HR)
75,000
93,700
254,000
505,000
680,000
807,000
947,000
1,157,000
1,379,000
1,503,000
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BOILER ENERGY INPUT
(% OF FULL CAPACITY)
5.0%
8.5%
24.4%
41.9%
54.7%
65.0%
74.5%
83.5%
92.9%
100%
BOILER ENERGY INPUT
(% OF FULL CAPACITY)
5.0%
6.2%
16.9%
33.7%
45.3%
53.8%
63.1%
77.1%
91.9%
100%
Page 53 of 122
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