Watts Aerco Benchmark OMM-0116 Installation And Start-Up Manual page 83

Benchmark 750-3000 Installation & Startup Manual
SECTION 5 – SAFETY DEVICE TESTING
HIGH Gas Pressure Test Instructions: BMK 750 – 2500
11. Press the CLEAR button on the C-More Controller to clear the fault.
12. The fault message should clear and the FAULT indicator should go off. The unit should
restart (if in MANUAL mode).
13. Upon test completion, close the ball valve and remove the manometer. Replace the 1/4"
NPT plug removed in step 2.
MANUAL SHUT-OFF
(P/N 22140-1 shown)
GAS INLET
HIGH GAS PRESSURE
Figure 5–3a: BMK 750/1000 HIGH Gas Pressure Test Components
MANUAL
SHUT-OFF
VALVE
(P/N 22188 shown)
Figure 5-3b: BMK 1500/2000: HIGH Gas Pressure Fault Test
• •
OMM-115_D GF-200 5/9/2019
VALVE
BALL VALVE
TO
AIR/FUEL
VALVE
SSOV
HIGH GAS BALL VALVE
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
TO AIR/FUEL
VALVE
HIGH GAS
PRESSURE SWITCH
126
LOW GAS
PRESSURE SWITCH
SSOV
1/4" NTP PLUG
(Install manometer here
for High Gas Pressure
Test)
NATURAL GAS
INLET
HIGH GAS
PRESSURE
SWITCH
LOW GAS
PRESSURE
SWITCH
1/4" NPT PLUG
(Install manometer here
for HIGH gas pressure
fault test)
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