AERCO Innovation (G-10-1350 to G-11-0563) - Manual (Page 62)

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Innovation Series Water Heaters Chapter 6
OMM-0079_0B USER MANUAL Maintenance
Page 62 of 200 AERCO International, Inc. · 100 Oritani Dr. · Blauvelt, NY 10913 · Ph.: 800-526-0288
07/21/11
4. Remove the two (2) screws 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 screw and one (1) #8-
32 screw.
5. Remove the flame detector and gasket from the manifold flange.
6. Thoroughly inspect the flame detector. If eroded, the detector should be replaced. Otherwise, clean
the detector with a fine emery cloth.
7. Reinstall the flame detector and flame detector gasket.
8. Reconnect the flame detector lead wire.
9. Reinstall the side and rear panels on the unit.
6.4 COMBUSTION CALIBRATION
Combustion settings must be checked at the intervals shown in Table 6-1 as part of the maintenance
requirements. Refer to Chapter 4 for combustion calibration instructions.
6.5 SAFETY DEVICE TESTING
Systematic and thorough tests of the operating and safety devices should be performed to ensure that
they are operating as designed. Also, certain code requirements specify that these tests be performed on a
scheduled basis. Test schedules must conform to local jurisdictions. The results of the tests should be
recorded in a log book. See Chapter 5 for Safety Device Test Procedures.
6.6 FIRESIDE INSPECTION
Fireside inspection of the Innovation Water Heater will include removal of the exhaust manifold, Blower-
side intake manifold, and the burner assembly from the Innovation Water Heater.
The purpose of this inspection is to check for the formation of deposits on the inside of the heat exchanger
tubes, exhaust manifold, and/or the burner assembly. These deposits can be caused by the presence of
even trace amounts of chlorides and/or sulfur, in the combustion air and fuel sources. Such deposits can
be influenced by the extent of the condensing operation and the chloride and sulfur levels that can vary
significantly from application to application.
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
81048 Flame Detector Gasket
18899 Burner 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
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.
3. Refer to Figures 6-2 and 6-3 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).