Watts Aerco Benchmark Series - Page 34

Benchmark Platinum-Edge: Operation-Service Manual
SECTION 4 – INITIAL START-UP
OMM-0137_D • GF-211 • 7/16/2019 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 34 of 146
Figure 4-1c: BMK 2500 1/4 Inch Gas Plug Location – BMK 2500 (P/N 22318 shown)
Figure 4-1d: 1/4 Inch Gas Plug Location – BMK 3000 (P/N 22310 shown)
SSOV
TO
AIR/FUEL
VALVE
LEAK DETECTION
BALL VALVE
1/4” NPT PLUG
(Install manometer here
for downstream
combustion calibration
reading)
HIGH GAS PRESSURE
SWITCH
LOW GAS
PRESSURE SWITCH
MANUAL SHUT-
OFF VALVE
NATURAL GAS INLET
NATURAL
GAS INLET
TO
AIR/FUEL
VALVE
LEAK DETECTION
BALL VALVE
1/4” NPT PLUG
(Install manometer here for upstream
combustion calibration reading)
HIGH GAS
PRESSURE WITCH
LOW GAS
PRESSURE
SWITCH
MANUAL
SHUT-OFF VALVE
SSOV
1/4” NPT 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)
LEAK DETECTION
BALL VALVE