Watts AERCO Benchmark OMM-0136 - Page 35

Benchmark Platinum-Edge [II]: Operation-Service Manual
SECTION 4 – INITIAL START-UP
OMM-0137_E • GF-211 • 12/13/2019 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 35 of 153
Figure 4-1a: 1/4 Inch Gas Plug Location – BMK750 & 1000 (P/N 22322 shown)
Figure 4-1b: 1/4 Inch Gas Plug Location – BMK1500 & 2000 (P/N 22314 shown)
NATURAL GAS INLET
SSOV
TO
AIR/FUEL
VALVE
LEAK DETECTION
BALL VALVES
1/4” NPT PLUG
(Install manometer here for
upstream combustion
calibration reading)
HIGH GAS
PRESSURE
SWITCH
LOW GAS
PRESSURE
SWITCH
MANUAL
SHUT-OFF
VALVE
SSOV
TO AIR/FUEL VALVE
MANUAL SHUT-
OFF VALVE
LEAK DETECTION BALL VALVE
1/4” NTP PLUG
(Install manometer here for
downstream combustion
calibration reading)
NATURAL GAS INLET
1/4” NTP PLUG
(Install manometer here for
upstream combustion
calibration reading)
LEAK DETECTION BALL VALVE
1/4” NPT PLUG
(Install manometer here for
downstream combustion
calibration reading)