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Benchmark 5000-6000 Boiler Installation & Startup Manual
SECTION 4: INITIAL START-UP
4.2 TOOLS & INSTRUMENTS FOR COMBUSTION CALIBRATION
To properly perform combustion calibration, the proper instruments and tools must be used and
correctly attached to the unit. The following sections outline the necessary tools and
instrumentation as well as their installation.
4.2.1 Required Tools & Instrumentation
The following tools and instrumentation are necessary to perform combustion calibration of the
unit:
•
Digital Combustion Analyzer: Oxygen accuracy to ± 0.4%; Carbon Monoxide (CO) and
Nitrogen Oxide (NO
•
0 to 16" W.C. (0 to 4.0 kPa) manometer or equivalent gauge and plastic tubing.
•
OPTIONAL: 1/4 inch NPT-to-barbed fittings for use with gas supply manometer or
gauge.
•
Small and large flat blade screwdrivers.
•
Tube of silicone adhesive
4.2.2 Installing Gas Supply Manometer
The gas supply manometer (or gauge) is used to monitor the gas pressure on the downstream
side of the SSOV during the Combustion Calibration procedures described in Section 4.5.1:
Natural Gas Combustion Calibration or Section 4.5.2: Propane Gas Combustion Calibration.
The gas supply manometer is installed at the upstream and/or downstream location shown in
Figure 4-1.
The gas supply manometer is installed at the downstream location shown in Figure 4-1.
MANUAL
SHUT-OFF
VALVE
Alternative location for
manometer if hose
barb is preferred
Install manometer here
for Combustion
Calibration.
Figure 4-1: Port Location for Combustion Calibration
OMM-0123_E • GF-207 • 12/17/2019
) resolution to 1 PPM.
x
TO AIR/FUEL
VALVE
DOWNSTREAM
SSOV WITH POC
SWITCH
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
UPSTREAM LEAK
DETECTION BALL VALVE
UPSTREAM LOW
GAS PRESSURE SWITCH
- BMK 6000: 8.5" W.C. (2.1 kPa)
- BMK 5000: 8.0" W.C. (2.0 kPa)
HIGH GAS PRESSURE SWITCH
- BMK 6000: 10.5" W.C. (2.6 kPa)
- BMK 5000: 11.0" W.C. (2.7 kPa)
Page 48 of 95
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