Benchmark 750-3000 Installation & Startup Manual
SECTION 3 - START SEQUENCE
OMM-115_D
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GF-200
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5/9/2019
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Start Sequence:
Figure 3-3a: BMK 750 & 1000 Blower Proof Switch
Figure 3-
3b: BMK 1500
– 3000 Blower Proof Switch
5. Upon completion of the purge cycle, the C-More Controller initiates an ignition cycle and
the following events occur:
a) The Air/Fuel Valve rotates to the low-fire (Ignition Position) position and closes the
ignition switch. The Dial on the Air/Fuel Valve (Figure 3-4) will read between
25
and
35
to indicate that the valve is in the low fire position.
AIR/FUEL VALVE
OUTLET TO BLOWER
BLOCKED
INLET
SWITCH
BLOWER
PROOF
SWITCH
AIR/FUEL VALVE
INLET FROM GAS
TRAIN
BLOWER PROOF SWITCH
BLOCKED INLET SWITCH