Owner manual

Benchmark 1500DF - 2000DF Boilers
CHAPTER 4 – INITIAL START-UP
Page 54 of 196 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0098_0A
04/01/2014 Ph.: 800-526-0288 GF-144
• 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 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.
Figure 4-1: BMK 1500DF/2000DF: 1/4 Inch Gas Plug Locations for Combustion
Calibration
NATURAL GAS
TO AIR/FUEL VALVE
MANUAL SHUT-
OFF VALVE
NATURAL GAS
LOW GAS PRESSURE
SWITCH
NATURAL GAS
HIGH GAS
PRESSURE SWITCH
PROPANE
SSOV
PROPANE INLET
NATURAL GAS
SSOV
PROPANE
LOW GAS PRESSURE
SWITCH
PROPANE
HIGH GAS PRESSURE
SWITCH
1/4” NPT PLUG
(Install manometer here for
NATURAL GAS Combustion
Calibration)
1/4” NPT PLUG
(Install manometer here for
PROPANE Combustion
Calibration)
NATURAL GAS
LOW GAS PRESSURE LEAK
DETECTION BALL VALVE
PROPANE
GAS LEAK DETECTION
BALL VALVE