Owner manual

CHAPTER 3: CONTROL PANEL OPERATION
Page 40 of 152 PR2: 05/09/12
Benchmark 1.5LN Low NOx Boiler
Operation and Maintenance Manual
OMM-0041_0D
GF-120
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 • Ph: 800-526-0288
100
DETAIL “A”
TO BLOWER
AIR IN
DIAL
(DETAIL “A”)
STEPPER
MOTOR
Figure 3-4: Air/Fuel Valve In Purge Position
AIR/FUEL
VALVE OUTLET
TO BLOWER
BLOWER
PROOF
SWITCH
Figure 3-5: Blower Proof Switch