Watts AERCO Benchmark BMK5000 User Manual

Benchmark with Edge [I]: Operation-Maintenance Manual
SECTION 4 – INITIAL START-UP
OMM-0145_D • GF-218 • 11/2/2020 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 62 of 213
NATURAL GAS Manual Combustion Calibration Instructions
TABLE 4-3g: NATURAL GAS Final Valve Positions: BMK4000/5000N Dual Fuel
Valve Position
Standard NO
x
Ultra-Low NO
x
CO
O
2
%
NO
x
O
2
%
NO
x
70%
5.5% ± 0.2%
≤20 ppm
6.0% ± 0.2%
≤9 ppm
<100 ppm
50%
5.5% ± 0.2%
≤20 ppm
6.5% ± 0.2%
≤9 ppm
<100 ppm
40%
5.5% ± 0.2%
≤20 ppm
6.5% ± 0.2%
≤9 ppm
<50 ppm
30%
5.5% ± 0.2%
≤20 ppm
6.5% ± 0.2%
≤9 ppm
<50 ppm
18%
5.5% ± 0.2%
≤20 ppm
5.5% ± 0.2%
≤9 ppm
<50 ppm
TABLE 4-3h: NATURAL GAS Final Valve Positions: BMK5000, Single & DF
Valve Position
Standard NOx
Ultra-Low NOx
CO
Single
Fuel
Dual
Fuel
O
2
%
NOx
O
2
%
NOx
70%
5.5% ± 0.5%
<20 ppm
6.0% ± 1.0%
≤9 ppm
<100 ppm
50%
5.5% ± 0.5%
<20 ppm
6.0% ± 1.0%
≤9 ppm
<100 ppm
40%
5.5% ± 0.5%
<20 ppm
6.0% ± 1.0%
≤9 ppm
<50 ppm
30%
5.5% ± 0.5%
<20 ppm
6.0% ± 1.0%
≤9 ppm
<50 ppm
18%
6.0% ± 1. 0%
<20 ppm
6.5% ± 1.5%
≤9 ppm
<50 ppm
NOTE: BMK5000 Low Gas Pressure (LGP) Model does not offer Ultra Low NOx settings.
TABLE 4-3i: NATURAL GAS Final Valve Positions: BMK6000, Single & DF
Valve Position
Standard NOx
Ultra-Low NO
x
CO
Single
Fuel
Dual
Fuel
O
2
%
NOx
O
2
%
NOx
70%
85%
5.5% ± 0.5%
<20 ppm
6.0% ± 1.0%
≤9 ppm
<100 ppm
50%
65%
5.5% ± 0.5%
<20 ppm
6.0% ± 1.0%
≤9 ppm
<100 ppm
40%
45%
5.5% ± 0.5%
<20 ppm
6.0% ± 1.0%
≤9 ppm
<50 ppm
30%
30%
5.5% ± 0.5%
<20 ppm
6.0% ± 1.0%
≤9 ppm
<50 ppm
18%
18%
6.0% ± 1.0%
<20 ppm
6.5% ± 1.5%
≤9 ppm
<50 ppm
Note: BMK6000 Low Gas Pressure (LGP) Model does not offer Ultra Low NOx settings.
26. If the oxygen level at the lowest valve position is too high, and the Blower voltage is at the
minimum value, you can adjust the TAC screw, which is recessed in the top of the Air/Fuel
Valve (see Figure 4-3). Rotate the screw 1/2 turn clockwise (CW) to add fuel and reduce
the O
2
to the specified level. Recalibration MUST be performed again from 60% or 50%
down to the lowest valve position after making a change to the TAC screw.
This completes the NATURAL GAS combustion calibration procedure.

Watts AERCO Benchmark BMK5000 Specifications

General

Brand	Watts
Model	AERCO Benchmark BMK5000
Category	Boiler
Language	English