Manual

CHAPTER 3
OPERATION
Page 44 of 166 AERCO International Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 • Ph: 800-526-0288 PR1:10/18/12
Benchmark 1.5LN Low NOx Boiler
Installation, Operation and Maintenance Manual
GF-120
OMM-0041 0E
AIR/FUEL
VALVE OUTLET
TO BLOWER
BLOWER
PROOF
SWITCH
Figure 3-5: Blower Proof Switch
25
TO BLOWER
AIR IN
DIAL
(DETAIL “A”)
STEPPER
MOTOR
DETAIL “A”
Figure 3-6: Air/Fuel Valve In Ignition Position
Up to 7 seconds will be allowed for ignition to be detected. The igniter relay will be 6.
turned off one second after flame is detected.