Watts AERCO Benchmark OMM-0136 - Page 37

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 37 of 153
Figure 4-1e: Port Location for Combustion Calibration – BMK4000
Figure 4-1f: Port Location for Combustion Calibration – BMK5000-6000
LOW GAS
PRESSURE SWITCH
TO AIR/FUEL
VALVE
MANUAL
SHUT-OFF
VALVE
DOWNSTREAM
SSOV WITH POC
SWITCH
HIGH GAS
PRESSURE SWITCH
UPSTREAM LEAK
DETECTION BALL VALVE
TO AIR/FUEL
VALVE
HIGH GAS PRESSURE SWITCH
MANUAL
SHUT-OFF
VALVE
UPSTREAM LEAK
DETECTION BALL VALVE
GAS PORT
(Install manometer here for
downstream combustion
calibration reading)
DOWNSTREAM
SSOV WITH POC
SWITCH
GAS PORT
(Install manometer here for
upstream combustion calibration
reading)
Alternative location for
manometer if hose
barb is preferred
LOW GAS
PRESSURE SWITCH