Watts AERCO Benchmark BMK750 Operation And Service Manual page 53

Benchmark with Edge [I]: Operation-Maintenance Manual
SECTION 4 – INITIAL START-UP
MANUAL SHUT-
OFF VALVE
Figure 4-1e: Port Location for Combustion Calibration – BMK4000
MANUAL
SHUT-OFF
VALVE
Alternative location for
manometer if hose
barb is preferred
GAS PORT
(Install manometer here for
downstream combustion
calibration reading)
Figure 4-1f: Port Location for Combustion Calibration – BMK5000-6000
OMM-0145_A99 • GF-218 •
LEAK DETECTION
BALL VALVE
SSOV
TO AIR/FUEL
VALVE
TO AIR/FUEL
VALVE
DOWNSTREAM
SSOV WITH POC
SWITCH
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
9/18/2019
HIGH GAS
PRESSURE
SWITCH
LEAK DETECTION
BALL VALVE
HIGH GAS PRESSURE SWITCH
NATURAL
GAS INLET
LOW GAS
PRESSURE
SWITCH
UPSTREAM LEAK
DETECTION BALL VALVE
GAS PORT
(Install manometer here for
upstream combustion calibration
reading)
LOW GAS
PRESSURE SWITCH
Page 53 of 157