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AM Series Boilers and Water Heaters User Manual
CHAPTER 10 – MAINTENANCE
10.16 Inspecting and Replacing the Heat Exchanger Thermal
Insulation
The thermal insulation in each heat exchanger module must be inspected every year for any
damage, including cracks, chips, or other abnormalities. If any damage is found, the insulation
must be replaced using the instructions below. The replacement procedure must be repeated on
each heat exchanger module in the unit.
Replacing the HEAT EXCHANGER Thermal Insulation
1.
Follow Steps 1 through 11 of the instructions in section 10.15 in order to remove the fan
and burner assembly from the heat exchanger.
2.
Unscrew nut from the thermal insulation (see Figure A).
3.
Use a screwdriver to remove the thermal insulation.
4.
Prepare the screw and the washer to fix the new thermal insulation (see Figure B).
Figure A: Screw & Thermal Insulation
5.
Align the bolt holes in the heat exchanger (detail B in Figure 8) with the corresponding hole
in the thermal insulation (detail A in Figure C).
6.
Install the thermal insulation in the heat exchanger, holding it in place with the screw and
washer included with the kit (see Figure D). ). It is recommended that you use a high
temperature anti-seize compound when installing the screw to facilitate removal during
subsequent maintenance.
Figure C: Replacing Thermal Insulation
OMM-0100_E • GF-146 • 11/15/2019
Figure B: Screw & Washer
Figure D: Installing Thermal Insulation
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