Advertisement
Benchmark 750-3000 Boiler Installation & Startup 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 BMK 750/1000 Air/Fuel Valve Position and Energy Input
TABLE 3-2a: BMK 750/1000 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: BMK 750/1000 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-0121_D • GF-205 • 5/9/2019
ENERGY INPUT
(BTU/HR)
BMK 750
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)
BMK 750
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)
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
BMK 1000
0
0
50,000 (14.7 kW)
54,000 (15.8 kW)
140,000 (41.0 kW)
297,000 (87.0 kW)
BMK 1000
BMK 750
0
0
BOILER ENERGY
INPUT (% OF FULL
CAPACITY)
BMK 750
BMK 1000
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)
BMK 1000
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%
Page 52 of 122
Advertisement
