Watts AERCO Benchmark OMM-0136 - Page 43

Benchmark Platinum-Edge [II]: Operation-Service Manual
SECTION 4 – INITIAL START-UP
OMM-0137_E • GF-211 • 12/13/2019 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 43 of 153
NATURAL GAS Manual Combustion Calibration Instructions
• 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
2
value, on the Combustion Calibration Data Sheet
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).
• BMK750 & 1000: 80%
• BMK1500 – 6000: 70%
25. Repeat step 17, 18 and 21 at that valve position and the rest of the valve positions in Table
4-3a through 4-3d, depending on model. The O
2
, NOx and CO should stay within the
ranges shown in these tables.
TABLE 4-3a: NATURAL GAS BMK Final Valve Positions: BMK750-1000
750 & 1000
Valve Position
Standard NOx
Ultra-Low NOx
CO
O
2
%
NOx
O
2
%
NOx
80%
5.5% ± 0.2%
≤20 ppm
6.0% ± 1.0%
≤9 ppm
<100 ppm
60%
5.5% ± 0.2%
≤20 ppm
6.0% ± 1.0%
≤9 ppm
<100 ppm
45%
5.5% ± 0.2%
≤20 ppm
6.0% ± 1.0%
≤9 ppm
<50 ppm
30%
5.5% ± 0.2%
≤20 ppm
6.0% ± 1.0%
≤9 ppm
<50 ppm
18%
5.5% ± 0.2%
≤20 ppm
6.0% ± 1.0%
≤9 ppm
<50 ppm
TABLE 4-3b: NATURAL GAS Final Valve Positions: BMK1500-2000
1500 & 2000 – Single Fuel Units
Valve Position
Standard NOx
Ultra-Low NOx
CO
1500
2000
O
2
%
NOx
O
2
%
NOx
70%
6.0% ± 0.2%
≤20 ppm
5.5% ± 1.0%
≤9 ppm
<100 ppm
50%
6.3% ± 0.2%
≤20 ppm
5.8% ± 1.0%
≤9 ppm
<100 ppm
40%
7.0% ± 0.2%
≤20 ppm
6.0% ± 1.0%
≤9 ppm
<50 ppm
30%
7.0% ± 0.2%
≤20 ppm
6.0% ± 1.0%
≤9 ppm
<50 ppm
16%
18%
7.0% ± 0.2%
≤20 ppm
8.0% ± 1.0%
≤9 ppm
<50 ppm
TABLE 4-3c: NATURAL GAS Final Valve Positions: BMK1500DF-2000DF
BMK1500 Dual Fuel Units
Valve %
O
2
%
NOx
CO
70%
6.0% ± 0.2%
≤20 ppm
<100 ppm
50%
6.3% ± 0.2%
≤20 ppm
<100 ppm
40%
7.0% ± 0.2%
≤20 ppm
<50 ppm
30%
7.0% ± 0.2%
≤20 ppm
<50 ppm
16%
8.0% ± 0.2%
≤20 ppm
<50 ppm