Watts AERCO Benchmark OMM-0136 Operation And Service Manual page 16

Benchmark Platinum-Edge [II]: Operation-Service Manual
SECTION 3 - START SEQUENCE
Start Sequence
1. The Controller's red DEMAND LED status indicator will light.
2. The unit checks all five pre-purge safety switches listed at the beginning of this section.
The Edge Controller's ignition sequence screen walks you through the ignition screens and
demonstrates (or highlights) which switches are not met. SSOV locations are shown in
Figure 3-1a through 3-1d.
NATURAL
GAS INLET
Figure 3-1a: BMK750 & 1000 SSOV Location (P/N 22322 shown)
MANUAL
SHUT-OFF
VALVE
Figure 3-1b: BMK1500 & 2000 SSOV Location (P/N 22314 shown)
OMM-0137_E • GF-211 •
12/13/2019
LOW GAS
PRESSURE
SWITCH
TO
AIR/FUEL
VALVE
SSOV
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
TO AIR/FUEL
VALVE
MANUAL
SHUT-OFF VALVE
SSOV
NATURAL
GAS INLET
HIGH GAS
PRESSURE
SWITCH
LOW GAS
PRESSURE
SWITCH
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