AERCO RECON 1000 - Manual (Page 83)

RECON Water Heaters Installation, Operation & Maintenance Manual
CHAPTER 6 – MAINTENANCE
OMM-0103_0A AERCO International, Inc.  100 Oritani Dr.  Blauvelt, NY 10913 Page 83 of 178
GF-147 Phone: 800-526-0288 PRI: 10/28/2014
6.6 FIRESIDE INSPECTION
The recommended method for fireside inspection is to remove the observation port (Figure 6.1)
and use a borescope inserted into the combustion chamber to inspect the burner and combustion
chamber areas. If damage or abnormal conditions are found, then a more detailed inspection is
required, which will include removal of the exhaust manifold, blower-side intake manifold, and the
burner assembly from the RECON Water Heater.
The following replacement gaskets are necessary for reassembly upon completion of the
inspection:
Part No. Description
GP-18899 Burner Flange Gasket (QTY = 2)
81048 Flame Detector Gasket (part of kit P/N 58023)
GP-122537 Manifold-To-Heat Exchanger 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 Figure 6-3 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 6-1).
6. Remove the two (2) hex standoffs securing the flame detector to the intake manifold (see
Figures 6-1).
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. DO NOT REMOVE the two 1/4-20 screws and nuts securing the
manifold support bracket.