Benchmark 2.0 LN Installation, Operation & Maintenance Manual
CHAPTER 4 – INITIAL START-UP
Page
52
of
168
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
OMM-0046_0J
06/18/2015
Phone: 800-526-0288
GF-123
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.
•
16 inch W.C. manometer or equivalent gauge and plastic tubing.
•
1/4" 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 calibrate the gas pressure to be monitored on
the downstream side of the SSOV during the Combustion Calibration procedures described in
paragraph 4.4.
The gas supply manometer is installed at the downstream location on the 1/4” NPT port shown in
Figure 4-1. Note that a 1/4” plug must be removed from the port in order to install the manometer.
Figure 4-1: Manometer Installation Location
Install the 16” W.C. manometer(s) as described in the following steps:
1. Turn off the main gas supply upstream of the unit.
2. Remove the top panel and left or right side panel from the boiler to access the gas train
components.
3. To monitor the gas pressure on the downstream side of the SSOV during Combustion
Calibration (paragraph 4.4), remove the 1/4” NPT plug from the leak detection ball valve on
the downstream side of the SSOV as shown in Figure 4-1.
4. Install a NPT-to-barbed fitting into the tapped plug port.
5. Attach one end of the plastic tubing to the barbed fitting and the other end to the 16” W.C.
manometer.
SSOV
GAS
INLET
TO AIR/FUEL
VALVE
MANUAL
SHUT-OFF
VALVE
(Shown open)
1/4” NPT PLUG
(Install manometer
here for Combustion
Calibration)