Watts AERCO Benchmark BMK5000 - Benchmark 2500 Air;Fuel Valve Position and Energy Input

Benchmark with Edge [I]: Operation-Maintenance Manual
SECTION 3 - START SEQUENCE
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3.4.4 Benchmark 2500 Air/Fuel Valve Position and Energy Input
TABLE 3-5a: BMK2500 Air/Fuel Valve Position – NATURAL GAS, Single Fuel
AIR/FUEL VALVE POSITION
(% OPEN)
ENERGY INPUT
(BTU/HR)
BOILER ENERGY INPUT
(% OF FULL CAPACITY)
16% (Stop Level)
167,000 (48.9 kW)
6.7%
30%
430,000 (126.0 kW)
17%
40%
770,000 (225.7 kW)
31%
50%
1,070,000 (313.6 kW)
43%
60%
1,440,000 (422.0 kW)
58%
70%
1,815,000 (531.9 kW)
73%
80%
2,030,000 (594.9 kW)
81%
90%
2,300,000 (674.1 kW)
92%
100%
2,500,000 (732.7 kW)
100%
TABLE 3-5b: BMK2500 Air/Fuel Valve Position – PROPANE GAS
AIR/FUEL VALVE POSITION
(% OPEN)
ENERGY INPUT
(BTU/HR)
BOILER ENERGY INPUT
(% OF FULL CAPACITY)
18% (Stop Level)
155,000
6.2%
30%
400,000
16%
40%
808,000
32%
50%
1,055,000
42%
60%
1,330,000
53%
70%
1,671,000
67%
80%
1,998,000
80%
90%
2,280,000
91%
100%
2,500,000
100%