AERCO BMK 1000 - Manual (Page 90)

Benchmark 750/1000 Boiler Installation, Operation & Maintenance Manual
CHAPTER 7 – MAINTENANCE
Page 90 of 192 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0082_0J
05/21/2014
Ph.: 800-526-0288
GF-130
7.2 IGNITER-INJECTOR REPLACEMENT
The igniter-injector (P/N 58023) is located on the burner plate at the top of the boiler. In addition
to providing the ignition spark required to light the burner, the igniter-injector also contains a gas
injector tube which connects to the staged ignition assembly. Figure 7-1 shows the complete
burner assembly removed from the boiler and indicates the location of the igniter-injector flame
detector and other related components.
Figure 7-1: Benchmark Burner Assembly (Removed from Boiler)
The igniter-injector may be hot, therefore care should be exercised to avoid burns. It is easier to
remove the igniter-injector from the unit after the unit has cooled to room temperature. To
inspect/replace the Igniter:
Igniter-Injector Replacement
1. Set the ON/OFF switch on the control panel, to the OFF position. Disconnect AC power
from the unit
2. Remove the top shroud from the unit by grasping the top handle and lifting straight up.
This will disengage the shroud from the four (4) pins in the side panels.
BLOWER PROOF
SWITCH
BLOCKED INLET
SWITCH
STAGED IGNITION
SOLENOID
STAGED IGNITION
ASSEMBLY
O2 SENSOR
BURNER PLATE
BURNER
AIR/FUEL VALVE
BLOWER
INJECTOR-IGNITOR
FLAME DETECTOR
GAS FLEX HOSE NIPPLE