Watts Aerco Benchmark Series Operation And Service Manual page 45

Benchmark Platinum-Edge: Operation-Service Manual
SECTION 4 – INITIAL START-UP
PROPANE Combustion Calibration Instructions
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
the 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).
•
BMK 750P & 1000P: 80%
•
BMK 1500/2000/2500 DF & P: 70%
•
BMK 3000 DF & P: 85%
•
BMK 5000P & 6000P: 70%
•
BMK 5000DF & 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: BMK 750 – 3000
Valve Position Oxygen (O
BMK 750/1000
80% 5.5% ± 0.2%
60% 5.5% ± 0.2%
45% 5.5% ± 0.2%
30% 6.3% ± 0.2%
18% 5.5% ± 0.2%
BMK 1500
70% 5.2% ± 0.2%
50%
5.3% ± 0.2%
40%
6.2% ± 0.2%
30%
7.0% ± 0.2%
18%
8.5% ± 0.2%
OMM-0137_D • GF-211 • 7/16/2019
level up to 1% higher than the Target value. You must then record
2
value, on the Combustion Calibration Data Sheet
2
) % Nitrogen oxide (NOx)
2
<100 ppm
<100 ppm
<100 ppm
<100 ppm
<100 ppm
<100 ppm
<100 ppm
<100 ppm
<100 ppm
<100 ppm
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
, NOx and CO should stay within the
2
Carbon Monoxide (CO)
<150 ppm
<150 ppm
<150 ppm
<100 ppm
<100 ppm
<150 ppm
<150 ppm
<150 ppm
<100 ppm
<100 ppm
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