Watts AERCO Benchmark BMK750 Operation And Service Manual page 64

Benchmark with Edge [I]: Operation-Maintenance Manual
SECTION 4 – INITIAL START-UP
NOTE:
These instructions assume that the inlet air temperature is between 50°F and 100°F (10°C
– 37.8°C). If NOx readings exceed the target values in Table 4-4, above, or Table 4-6, below,
increase the O level up to 1% higher than the Target value. You must then record the
2
increased O value on the Combustion Calibration sheet.
2
22. On Benchmark 3000 - 6000 units only, record the manifold (downstream) gas pressure at
100%. This value will be used in Section 5.2.2: Low Pressure Gas Test, and Section 5.3.2:
High Pressure Gas Test.
23. Once the O level is within the specified range at 100%:
2
•
Enter the Flame Strength, NOx and CO readings from the Combustion Analyzer
and multi-meter in the Manual Combustion Calibration screen's Reading column.
•
Enter the same values, plus the O
provided with the unit.
24. Lower the Valve Position to the next calibration point using the  (Left) arrow key (if using
Method 1 in step 11) or the Fine Valve Position – (Minus) key (if using Method 2).
•
BMK750P & 1000P: 80%
•
BMK1500/2000/2500 DF & P: 70%
•
BMK3000 DF & P: 85%
•
BMK5000P & 6000P: 70%
•
BMK5000DF & 6000DF: 85%
25. Repeat step 17, 18 and 21 at that valve position and the rest of the valve positions in Table
Table 4-6a and 4-6b, depending on model. The O
ranges shown in these tables.
TABLE 4-6a: PROPANE Final Valve Positions: BMK750 – 3000
Valve Position
BMK750/1000
80%
60%
45%
30%
18%
BMK1500
70%
50%
40%
30%
18%
BMK2000
70%
50%
40%
30%
18%
OMM-0145_A99 • GF-218 •
Oxygen (O ) % Nitrogen oxide (NOx)
2
5.5% ± 0.2%
5.5% ± 0.2%
5.5% ± 0.2%
6.3% ± 0.2%
5.5% ± 0.2%
5.2% ± 0.2%
5.3% ± 0.2%
6.2% ± 0.2%
7.0% ± 0.2%
8.5% ± 0.2%
6.5% ± 0.2%
6.5% ± 0.2%
6.5% ± 0.2%
6.5% ± 0.2%
5.5% ± 0.2%
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
9/18/2019
value, on the Combustion Calibration Data Sheet
2
, NOx and CO should stay within the
2
Carbon Monoxide (CO)
<100 ppm
<100 ppm
<100 ppm
<100 ppm
<100 ppm
<100 ppm
<100 ppm
<100 ppm
<100 ppm
<100 ppm
<100 ppm
<100 ppm
<100 ppm
<100 ppm
<100 ppm
<150 ppm
<150 ppm
<150 ppm
<100 ppm
<100 ppm
<150 ppm
<150 ppm
<150 ppm
<100 ppm
<100 ppm
<150 ppm
<150 ppm
<150 ppm
<100 ppm
<100 ppm
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