Igniter-Injector - Watts Aerco BENCHMARK 750 User Manual

Benchmark 750 – 1000 Boiler User Manual - INTERNATIONAL

7.2 IGNITER-INJECTOR

The igniter-injector (Kit P/N 58023) is located on the burner plate at the top of the Heating
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 Heating Boiler and indicates the
location of the igniter-injector flame detector and other related components.
BURNER PLATE
FLAME DETECTOR
O2 SENSOR
BURNER
Figure 7-1: Benchmark 750/1000 Burner Assembly (Removed from Unit)
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 Maintenance Procedures
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.
3. Disconnect the cable from the igniter-injector (Figure 7-1).
Page 86 of 170
11/03/2016
CHAPTER 7 – MAINTENANCE
BLOWER PROOF
SWITCH
BLOWER
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
Ph.: 800-526-0288
BLOCKED INLET
SWITCH
AIR/FUEL VALVE
GAS FLEX HOSE NIPPLE
STAGED IGNITION
SOLENOID
STAGED IGNITION
ASSEMBLY
IGNITER-INJECTOR
OMM-0119_0A
GF-130-I