Start/Stop Levels - Watts AERCO Benchmark BMK750 Operation And Service Manual

Benchmark with Edge [I]: Operation-Maintenance Manual
SECTION 3 - START SEQUENCE

3.3 START/STOP LEVELS

The start and stop levels are the Air/Fuel Valve positions (% open) that start and stop the unit,
based on load. These levels are Factory preset as follows:
TABLE 3-1a: Start/Stop Levels – NATURAL GAS
BMK
750
Start
22%
Level:
Stop
18%
Level:
Ignition
35%
Position
TABLE 3-1b: Start/Stop Levels – PROPANE GAS
BMK
750
Start
22%
Level:
Stop
18%
Level:
Ignition
35%
Position
Normally, these settings do not require adjustment.
Note that the energy input of the boiler is not linearly related to the Air/Fuel Valve position.
OMM-0145_A99 • GF-218 •
BMK BMK BMK
1000 1500 2000
22% 20% 24%
18% 16% 18%
35% 29% 29%
BMK BMK BMK
1000 1500 2000
22% 20% 24%
18% 16% 18%
35% 29% 29%
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
9/18/2019
BMK BMK BMK
2500 3000 4000
24% 20% 27%
16% 14% 23%
29% 29% 45%
BMK BMK BMK
2500 3000 4000
26% 22% N/A
18% 14% N/A
29% 29% N/A
BMK BMK
5000 6000
24% 24%
18% 18%
35% 50%
BMK BMK
5000 6000
24% 24%
18% 18%
35% 50%
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