AERCO BMK 1.5 LN October 2012 - Manual (Page 74)

CHAPTER 6
SAFETY DEVICE TESTING
Page 74 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
Place the unit in the Manual Mode and set the valve position between 25% and 30%. 2.
Close the manual gas shutoff valve located between the Safety Shut-Off Valve (SSOV) 3.
and the Air/Fuel Valve (see Figure 6-3).
PARTIAL LEFT SIDE VIEW
BLOWER
PROOF
SWITCH
BLOCKED
INLET
SWITCH
AIR
INLET
AIR/FUEL
VALVE
SSOV
MANUAL
GAS
SHUTOFF
VALVE
Figure 6-3: Manual Gas Shut-Off Valve Location
Set the ON/OFF switch to the ON position to start the unit. 4.
The unit should shut down after reaching the Ignition cycle and display FLAME LOSS 5.
DURING IGN.
Open the valve previously closed in step 3 and press the CLEAR button. 6.
Restart the unit and allow it to prove flame. 7.
Once flame is proven, close the manual gas valve located between the SSOV (Figure 6- 8.
3) and the Air/Fuel Valve.
The unit should shut down and execute an IGNITION RETRY cycle by performing the 9.
following steps:
a. The unit will execute a shutdown purge cycle for a period of 15 seconds and display
WAIT FAULT PURGE.
b. The unit will execute a 30 second re-ignition delay and display WAIT RETRY
PAUSE.
c. The unit will then execute a standard ignition sequence and display WAIT IGNITION
RETRY.