AERCO Innovation (G-14-2265 and above) User Manual
Page 81
Innovation Water Heaters Installation, Operation & Maintenance Manual
CHAPTER 6 – MAINTENANCE
OMM-0078_0L
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
Page 81 of
206
GF-128
Phone: 800-526-0288
PRI: 11/25/2014
Since the fireside inspection will include removal of the exhaust manifold, burner assembly and
blower-side intake manifold from the Innovation Water Heater, the following replacement gaskets
will be necessary for reassembly upon completion of the inspection:
Part No.
Description
GP-18899 Burner Flange Gasket (Qty. = 2)
81048
Flame Detector Gasket
81197
Shield Gasket
The blower-side intake manifold may be hot. Therefore, allow the unit to cool sufficiently before
starting the removal process described in the following steps.
Fireside Inspection
1.
Set the ON/OFF switch on the control panel, to the OFF position. Disconnect AC power
from the unit and turn off the gas supply.
2.
Remove the exhaust vent from the exhaust manifold. Use a scraper or blade to separate
the high temperature silicon sealant between the exhaust manifold and vent connector and
remove all sealant from both surfaces in preparation for reassembly.
3.
Remove the side and rear panels from the unit. Also remove the bottom panel of the
cabinet to expose the mechanical room floor beneath the burner. This is needed to provide
clearance for pulling the burner.
4.
Refer to Figures 6-3 and 6-4 to locate the blower-side intake manifold at the bottom of the
unit's heat exchanger.
5.
Disconnect the lead wire from the flame detector installed on the intake manifold flange
(Figure 6-2).
6.
Remove the two (2) hex standoffs securing the flame detector to the intake manifold (see
Figures 6-1 and 6-2).
7.
Remove the flame detector and gasket from the intake manifold flange.
8.
Disconnect the cable from the igniter-injector, loosen the compression nut and elbow from
the gas injector tube (Figure 6-1), and remove the entire ignition assembly (nut/elbow,
solenoid valve, hose nipple, and gas flex hose) from the manifold flange.
9.
Loosen and remove the igniter-injector
from the intake manifold flange. Retain the clocking
washers (if present), for later reassembly.
10.
Refer to Figure 6-3. Loosen and remove the four (4) 1/4-20 cap screws securing the blower
side of the intake manifold (44106). DO NOT REMOVE the two 1/4-20 screws and nuts
securing the manifold support bracket.