2
Installation Instructions
STEP 1:
Prepare Installation Area by Removing the Existing Unit and RAVTRANS plenum
(if applicable)
WARNING
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the service panel and lock the area to prevent power from being switched on accidentally.
To remove the AZ75/AZ85 series unit:
1. Disconnect the power coming into the unit from the main breaker or
closet mounted disconnect.
2. Remove the front case panel (for front install) or front and side case
panel (for side install).
3. Unplug the 9-pin yellow connector and disconnect the wall thermostat
connection.
4. Fully loosen the 4 adjustable screws on the top cover and disconnect
the top duct work from the unit.
5. Remove the front and or side case-to-unit grounding screws, if
present.
6. Slide the unit out of the case.
7. Disconnect all of the drains.
8. Remove the bolts holding the case to the platform (if present).
9. Remove the 6 screws securing the case to the plenum.
10. Remove the case.
11. Remove any existing platform.
To remove AZ90/91 series unit:
1. Disconnect the power coming into the unit from the main breaker or closet mounted disconnect.
2. Remove power disconnect on front of the unit.
3. Remove front panel.
4. Disconnect power wires from the unit.
5. Disconnect thermostat wires from the unit.
6. Disconnect all of the drains.
7. Disconnect air duct on top of the unit.
8. Remove the unit.
9. Remove any existing platform.
10. Remove the black RAVTRANS transition plenum.
STEP 2:
Install and Connect the Transition Plenum to the Existing Wall Plenum
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2. Align the transition plenum mounting holes to the mounting holes on the existing wall plenum. The top of the
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3. Attach the transition plenum to the wall plenum with the 6 supplied screws.
Inside
Wall
Rigid
Ductwork
Access
Panel or
Closet Door
Existing
Wall Plenum
When complete the closet area
should look like this.
Mounting
Locations
Rigid
Ductwork
Flush with
top of
existing
wall plenum
Flange
Align Mounting Locations
