Watts AERCO Benchmark BMK5000 - Benchmark 1500 Air;Fuel Valve Position and Energy Input

Benchmark with Edge [I]: Operation-Maintenance Manual
SECTION 3 - START SEQUENCE
OMM-0145_D • GF-218 • 11/2/2020 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 41 of 213
3.4.2 Benchmark 1500 Air/Fuel Valve Position and Energy Input
TABLE 3-3a: BMK1500 Air/Fuel Valve Position – NATURAL GAS
AIR/FUEL VALVE POSITION
(% OPEN)
ENERGY INPUT
(BTU/HR)
BOILER ENERGY INPUT
(% OF FULL CAPACITY)
16% (Stop Level)
75,000 (22.3 kW)
5.0%
20%
127,000 (37.2 kW)
8.5%
30%
366,000 (107.2 kW)
24.4%
40%
629,000 (184.3 kW)
41.9%
50%
822,000 (240.9 kW)
54.7%
60%
977,000 (286.2 kW)
65.0%
70%
1,119,000 (327.9 kW)
74.5%
80%
1,255,000 (367.7 kW)
83.5%
90%
1,396,000 (409.0 kW)
92.9%
100%
1,502,000 (440.1 kW)
100%
TABLE 3-3b: BMK1500 Air/Fuel Valve Position – PROPANE GAS
AIR/FUEL VALVE POSITION
(% OPEN)
ENERGY INPUT
(BTU/HR)
BOILER ENERGY INPUT
(% OF FULL CAPACITY)
18% (Stop Level)
75,000
5.0%
20%
93,700
6.2%
30%
254,000
16.9%
40%
505,000
33.7%
50%
680,000
45.3%
60%
807,000
53.8%
70%
947,000
63.1%
80%
1,157,000
77.1%
90%
1,379,000
91.9%
100%
1,503,000
100%