Watts AERCO Benchmark BMK5000 - Page 51

Benchmark with Edge [I]: Operation-Maintenance Manual
SECTION 4 – INITIAL START-UP
OMM-0145_D • GF-218 • 11/2/2020 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 51 of 213
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)