Replacement Aluminized Primary Heat Exchanger: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
4
A11299
Fig. 3 – J-Box Removal / Installation
A160109
Fig. 4 – Collector Box Removal / Installation
Heat Exchanger Assembly Removal
1. Remove the screws that attach the filler plate to the bottom edge of
the condensing heat exchanger assembly and casing.
2. Remove screws that secure the heat exchanger assembly to the heat
exchanger mounting brackets.
3. Pull assembly out of casing until the back edge of the heat
exchanger assembly is resting on the front edge of the blower shelf.
4. Lift the heat exchanger assembly out of the casing and set aside.
Remove Coupling Box
1. Remove the screws that secure the finger baffle from the Coupling
2. Remove the screws that secure the Coupling Box Cover to the rear
of the Heat Exchanger Assembly.
3. Starting at the upper beveled edge of the coupling box, use a putty
knife or gasket scraper to get between the coupling box cover and
the Primary Cell Outlet panel to break the silicone seal between the
parts.
4. Pry upwards with the putty knife as you move around the Coupling
Box cover.
5. Once the Coupling Box cover is sufficiently loosened, remove the
coupling box cover from the rear of the Heat Exchanger Assembly,
6. Remove the screws that secure the Sidewall Baffles to the Primary
Cell Panel and set aside.
Separate Primary and Condensing Heat
Exchangers
1. Remove the screws that attach the condensing heat exchanger
assembly to the primary cell outlet panel and remove the screws
that attach the condensing heat exchanger outlet panel to the
primary inlet panel.
2. Gently use a putty knife or gasket scraper to get between the
primary cell inlet panel and condensing heat exchanger if it is
needed to break the seal between the parts.
3. Repeat the procedure at the primary cell outlet panel and
containment plate attached to the inlet of the secondary heat
exchanger.
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
.
NOTE:
The front edge of the sidewall baffle has a slot that engages a tab
on the primary cell panel, see
.
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 locater tab on the cell panel.
J−BOX
MOUNTING
SCREWS
J−BOX
MOUNTING
BRACKET
GROUND
SCREW
J−BOX COVER
J-BOX
LOCATIONS
CAUTION
!
CUT HAZARD
Failure to follow this caution may result in personal injury.
Sheet metal parts may have sharp edges or burrs. Use care and wear
appropriate protective clothing and gloves when handling parts and
servicing furnaces.
