Start/Stop Levels - Air/Fuel & Energy Input; Bmk750/1000 Air/Fuel Valve Position And Energy Input - Watts AERCO Benchmark BMK5000 Operation And Service Manual

Benchmark Platinum-Edge [ii]: Operation-Service Manual
SECTION 3 - START SEQUENCE
3.4 START/STOP LEVELS – AIR/FUEL & ENERGY INPUT
The Tables below show the relationship between the energy input and Air/Fuel Valve position
for the BMK models covered in this document.

3.4.1 BMK750/1000 Air/Fuel Valve Position and Energy Input

TABLE 3-2a: BMK750/1000 Air/Fuel Valve Position – NATURAL GAS
Air/Fuel Valve
Position (%
Open)
0%
10%
18% (Stop Level)
20%
30%
40%
50% 369,000 (108.1 kW)
60% 465,000 (136.3 kW)
70% 554,000 (162.4 kW)
80% 637,000 (186.7 kW)
90% 733,000 (214.8 kW)
100% 750,000 (219.8 kW)
TABLE 3-2b: BMK750/1000 Air/Fuel Valve Position – PROPANE GAS
Air/Fuel Valve
Position (%
Open)
0%
10%
18% (Stop Level) 50,000 (14.7 Kw)
20% 71,000 (20.8 kW)
30% 128,000 (37.5 kW)
40% 373,000 (109.3 kW)
50% 508,000 (148.9 kW)
60% 565,000 (165.6 kW)
70% 621,000 (182.0 kW)
80% 660,000 (193.4 kW)
90% 723,000 (211.9 kW)
100% 750,000 (219.8 kW)
OMM-0137_J •
12/20/2022
ENERGY INPUT
(BTU/HR)
BMK750
0
0
50,000 (14.7 kW)
52,000 (15.2 kW)
108,000 (31.7 kW)
246,000 (72.1 kW)
443,000 (126.9 kW)
564,000 (165.3 kW)
660,000 (193.4 kW)
789,000 (231.2 kW)
933,000 (273.4 kW)
1,000,000 (293.1 kW)
Energy Input
(BTU/Hr)
BMK750
0
0
50,000 (14.7 kW
71,000 (20.8 kW)
181,000 (53.0 kW)
400,000 (117.2 kW)
562,000 (164.7 kW)
703,000 (206.0 kW)
791,000 (231.8 kW)
865,000 (253.5 kW)
963,000 (282.2 kW)
1,000,000 (293.1 kW)
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BMK1000
0
0
50,000 (14.7 kW)
54,000 (15.8 kW)
140,000 (41.0 kW)
297,000 (87.0 kW)
BMK1000 BMK750
0
0
BOILER ENERGY
INPUT (% OF FULL
CAPACITY)
BMK750 BMK1000
0 0
0 0
6.7% 5%
6.9% 5.4%
14% 14%
33% 30%
49% 44%
62% 56%
74% 66%
85% 79%
98% 93%
100% 100%
Boiler Energy Input
(% of Full Capacity)
BMK1000
0 0
0 0
6.7% 5.0%
9.5% 7.1%
17% 18%
50% 40%
68% 56%
75% 70%
83% 79%
88% 87%
96% 96%
100% 100%
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