Watts Aerco Benchmark Series - 3.4 START;STOP LEVELS - AIR;FUEL & ENERGY INPUT; 3.4.1 BMK 750;1000 Air;Fuel Valve Position and Energy Input

Benchmark Platinum-Edge: Operation-Service Manual
SECTION 3 - START SEQUENCE
OMM-0137_D • GF-211 • 7/16/2019 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 24 of 146
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)
ENERGY INPUT
(BTU/HR)
BOILER ENERGY
INPUT (% OF FULL
CAPACITY)
BMK 750
BMK 1000
BMK 750
BMK 1000
0%
0
0
0
0
10%
0
0
0
0
18% (Stop Level)
50,000 (14.7 kW)
50,000 (14.7 kW)
6.7%
5%
20%
52,000 (15.2 kW)
54,000 (15.8 kW)
6.9%
5.4%
30%
108,000 (31.7 kW)
140,000 (41.0 kW)
14%
14%
40%
246,000 (72.1 kW)
297,000 (87.0 kW)
33%
30%
50%
369,000 (108.1 kW)
443,000 (126.9 kW)
49%
44%
60%
465,000 (136.3 kW)
564,000 (165.3 kW)
62%
56%
70%
554,000 (162.4 kW)
660,000 (193.4 kW)
74%
66%
80%
637,000 (186.7 kW)
789,000 (231.2 kW)
85%
79%
90%
733,000 (214.8 kW)
933,000 (273.4 kW)
98%
93%
100%
750,000 (219.8 kW)
1,000,000 (293.1 kW)
100%
100%
TABLE 3-2b: BMK 750/1000 Air/Fuel Valve Position – PROPANE GAS
Air/Fuel Valve
Position (%
Open)
Energy Input
(BTU/Hr)
Boiler Energy Input
(% of Full Capacity)
BMK 750
BMK 1000
BMK 750
BMK 1000
0%
0
0
0
0
10%
0
0
0
0
18% (Stop Level)
50,000 (14.7 kW
50,000 (14.7 kW
6.7%
5.0%
20%
71,000 (20.8 kW)
71,000 (20.8 kW)
9.5%
7.1%
30%
128,000 (37.5 kW)
181,000 (53.0 kW)
17%
18%
40%
373,000 (109.3 kW)
400,000 (117.2 kW)
50%
40%
50%
508,000 (148.9 kW)
562,000 (164.7 kW)
68%
56%
60%
565,000 (165.6 kW)
703,000 (206.0 kW)
75%
70%
70%
621,000 (182.0 kW)
791,000 (231.8 kW)
83%
79%
80%
660,000 (193.4 kW)
865,000 (253.5 kW)
88%
87%
90%
723,000 (211.9 kW)
963,000 (282.2 kW)
96%
96%
100%
750,000 (219.8 kW)
1,000,000 (293.1 kW)
100%
100%