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Remove Primary and Condensing Heat Exchanger
NOTE:
The primary heat exchanger assembly is factory- -
assembled at primary cell attachment plate and the primary rear cell
outlet panel. The individual heat exchanger cells cannot be
removed in the field and are replaced as one assembly.
1. Remove screws that attach the sidewall baffles to the heat
exchanger cell panel. See Fig. 8.
NOTE: The front edge of the sidewall baffle has a slot that
engages a tab on the primary cell panel. See Fig. 8.
2. Avoid damaging the cell panel insulation by pulling the
sidewall baffle outward from the rear of coupling box, then
pull the baffle backward to slide the baffle off of the locator
tab on the cell panel.
BOX COVER
Fig. 5 - - Heat Exchanger Removal / Installation
5
3. Repeat the procedure for the opposite side baffle.
4. Remove the screws around each burner inlet opening that
attaches the heat exchanger cell panel to the primary inlet
plate of the primary heat exchanger assembly.
5. If not removed already, remove the screws that attach the
primary cell panel to the front of condensing heat exchanger
section.
6. Separate the Primary Heat Exchanger from the Condensing
Heat Exchanger.
7. Remove the primary cell panel from the primary cell inlet
plate and set aside.
CELL PANEL
A11413
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