AERCO Innovation (G-13-1854 and above) - Manual (Page 75)

Innovation Water Heaters Installation, Operation & Maintenance Manual
CHAPTER 6 – MAINTENANCE
OMM-0078_0J
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
Page 75 of
196
GF-128
Phone: 800-526-0288
PRI: 11/22/2013
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
18899 Burner Flange Gasket
81150 Flame Detector Gasket
124749 Fiber Frax Gasket
161151 Combustion Chamber Liner (If damaged)
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 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 need to provide
clearance for pulling the burner.
3. Refer to Figures 6-3 and 6-4 to locate the blower-side intake manifold (part no. 44106) at
the bottom of the unit's heat exchanger.
4. Disconnect the lead wire from the flame detector installed on the intake manifold flange
(Figure 6-2).
5. Remove the two (2) hex standoffs securing the flame detector to the intake manifold
(Figures 6-1 and 6-2). The flame detector is secured to the burner intake manifold with one
(1) #10-32 and one (1) #8-32 hex standoff.
6. Remove the flame detector and gasket from the blower side intake manifold flange.
7. Disconnect the cable from the igniter (66023), which is also installed on the blower-side
intake manifold flange.
8. Next, loosen and remove the igniter from the intake manifold flange using a 1" open-end
wrench.
9. 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.