2 igniter-injector – AERCO Innovation (G-14-2265 and above) User Manual
Page 78
Innovation Water Heaters Installation, Operation & Maintenance Manual
CHAPTER 6 – MAINTENANCE
Page 78 of
206
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
OMM-0078_0L
PRI: 11/25/2014
Phone: 800-526-0288
GF-128
6.2 IGNITER-INJECTOR
The igniter-injector is located on the flange of the blower-side intake manifold, at the bottom of the
unit’s heat exchanger. The igniter-injector (Kit P/N 58023) is the same for Natural Gas and
Propane units. Figure 6-1 shows the blower-side intake manifold (removed from the heater)
showing the location of the igniter-injector, flame detector and gasket (Kit P/N 24356-2) and
related components.
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.
Figure 6-1. Blower-Side Intake Manifold with Igniter-Injector & Flame Detector
Igniter-Injector
Inspection/Replacement
1.
Set the ON/OFF switch on the control panel, to the OFF position. Disconnect AC power
from the unit.
2.
Remove the side and rear panels from the unit.
3.
Disconnect the ignition cable and ground wire from the igniter-injector.
4.
Refer to Figure 6-1. Disconnect the compression nut securing the gas injector tube of the
igniter-injector to the elbow of the ignition assembly. Disconnect the ignition assembly from
the igniter-injector.
5.
Loosen and remove the igniter-injector from the burner plate.
6.
Check the igniter-injector for evidence of erosion or carbon build-up. If there is evidence of
substantial erosion or carbon build-up, the igniter-injector should be replaced. If carbon
build-up is present, clean the component using fine emery cloth. Repeated carbon build-up
is an indication that the combustion settings of the unit should be checked. Refer to Chapter
4 for combustion calibration procedures.
FLAME
DETECTOR
INTAKE
MANIFOLD
FLANGE
IGNITER-INJECTOR
(Kit P/N 58023)
FLAME DETECTOR
(Kit P/N 24356-2)
FLAME DETECTOR
GASKET
(Kit P/N 24356-2)
BURNER FLANGE
GASKET
(P/N GP-18899)
OBSERVATION
PORT
IGNITER-INJECTOR
IGNITION
SOLENOID