Watts AERCO Benchmark BMK750 Operation And Service Manual page 51

Benchmark with Edge [I]: Operation-Maintenance Manual
SECTION 4 – INITIAL START-UP
SSOV
1/4" NTP PLUG
(Install manometer here for
downstream combustion
calibration reading )
LEAK DETECTION BALL VALVE
Figure 4-1a: 1/4 Inch Gas Plug Location – BMK750 & 1000 (P/N 22322 shown)
MANUAL
SHUT-OFF
VALVE
1/4" NPT PLUG
(Install manometer here for
downstream combustion
calibration reading)
Figure 4-1b: 1/4 Inch Gas Plug Location – BMK1500 & 2000 (P/N 22314 shown)
OMM-0145_A99 • GF-218 •
TO AIR/FUEL VALVE
TO
AIR/FUEL
VALVE
LEAK DETECTION
BALL VALVES
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
9/18/2019
MANUAL SHUT-
OFF VALVE
1/4" NTP PLUG
(Install manometer here for
upstream combustion
calibration reading )
LEAK DETECTION BALL VALVE
NATURAL GAS INLET
NATURAL GAS INLET
SSOV
LOW GAS
PRESSURE
SWITCH
1/4" NPT PLUG
(Install manometer here for
upstream combustion
calibration reading)
HIGH GAS
PRESSURE
SWITCH
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