Aerco Benchmark 2000 User Manual

Benchmark 1500 - 2000 Boilers
CHAPTER 3 – OPERATION
OMM-0097_0E AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 49 of 182
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1. The DEMAND LED status indicator will light.
2. The unit checks to ensure that the Proof of Closure (POC) switch in the downstream
Safety Shut-Off Valve (SSOV) is closed. See Figure 3-3 for SSOV location.
Figure 3-3:
BMK 1500/2000: SSOV Location
3. With all required safety device switches closed, a purge cycle will be initiated and the
following events will occur:
a. The Blower relay energizes and turns on the blower.
b. The Air/Fuel Valve rotates to the full-open purge position and closes purge position
switch. The dial on the Air/Fuel Valve (Figure 3-4) will read 100 to indicate that it is
full-open (100%).
c. The VALVE POSITION bargraph will show 100%.
NATURAL GAS INLET
TO
AIR/FUEL
VALVE
MANUAL
SHUT-OFF
VALVE
LOW GAS
PRESSURE
SWITCH
HIGH GAS
PRESSURE
SWITCH
SSOV

Aerco Benchmark 2000 Specifications

General

Brand	Aerco
Model	Benchmark 2000
Category	Boiler
Language	English