Watts Aerco Benchmark OMM-0124 Installation And Start-Up Manual page 66

Benchmark 5000-6000 Boiler Installation & Startup Manual
SECTION 5: SAFETY DEVICE TESTING
HIGH Gas Pressure Test Instructions
12. Press the CLEAR button on the Control Panel to clear the fault.
13. Upon test completion, remove the manometer, and turn the NATURAL GAS High Gas
Pressure Switch port screw clockwise until port is closed.
14. For Dual Fuel gas trains, repeat this procedure on the PROPANE gas train, starting with
opening the port on the side of the PROPANE High Gas Pressure Switch, as shown in
Figure 5-3.
Alternative location
for manometer if hose
barb is preferred
NATURAL GAS HIGH Gas
Pressure Port
Install manometer here for High
Gas Pressure test
PROPANE Gas Pressure Port
Install manometer here for High Gas Pressure test
Alternative location for manometer
if hose barb is preferred
Figure 5-3: High Gas Pressure Switch Locations & Test Ports
OMM-0123_E • GF-207 • 12/17/2019
NATURAL GAS HIGH GAS
PRESSURE SWITCH
- BMK 6000 – 10.5" W.C., 2.6 kPa
- BMK 5000 – 11.0" W.C., 2.7 kPa
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
DOWNSTREAM
SSOV WITH POC
SWITCH
PROPANE HIGH GAS
PRESSURE SWITCH
- BMK 6000 – 10.5" W.C., 2.6 kPa
- BMK 5000 – 4.5" W.C., 1.1 kPa
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