Required Tools & Instrumentation; Installing Gas Supply Manometer - Watts Aerco BENCHMARK 750 User Manual

Benchmark 750 – 1000 Boiler User Manual - INTERNATIONAL
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 (NOx) resolution to 1PPM.
•
0 to 16 inch W.C. (0 to 4.0 kPa) manometer or equivalent gauge and plastic tubing.
•
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 4.3.
The gas supply manometer is installed at the upstream and/or downstream location shown in
Figure 4-1.
SSOV
1/4" NTP PLUG
(Install manometer here for
combustion calibration)
Figure 4-1: 1/4 Inch Gas Plug Location for Combustion Calibration
Page 56 of 170
11/03/2016
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