Required Tools & Instrumentation; Installing Gas Supply Manometer - Watts Aerco Innovation 800 User Manual

Innovation Hot Water Hot Water Boiler User Manual
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. (4.0 kPa) manometer or equivalent gauge and plastic tubing.
•
Multimeter (Capable of measuring 0 – 10 µA)
•
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 is installed in the gas train as follows:
1. Close the main manual gas supply shut-off valve upstream of the unit.
2. Remove the front door and left side panels from the heater to access the gas train
components.
3. Remove the 1/4 inch NPT pipe plug from the leak detection ball valve on the downstream
side of the Safety Shut Off Valve (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 inch
W.C. (4.0 kPa) manometer.
HIGH GAS PRESSURE
SWITCH
LEAK DETECTION
BALL VALVE
1/4" (6.35 mm) NPT PLUG
(Install Manometer Here
MANUAL SHUTOFF
Figure 4-1. 1/4 Inch Gas Plug Location (Gas Train P/N 22282 Shown)
Page 50 of 174
11/15/2016
CHAPTER 4 – INITIAL START-UP
Installing Gas Supply Manometer
VALVE
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
Phone: 800-526-0288
- INTERNATIONAL
SSOV
LOW GAS
PRESSURE
SWITCH
TO AIR/FUEL
VALVE
OMM-0120_0A
GF-128-I