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M 871-3
ExtendAire™ (Optional) Boost Fan
Installation Procedure Common to Models
PDAE/PDHE and PDAF/PDHF
Parts in Kit
1. Boost Fan (1)
2. Motor Wire Harness (1)
3. Zip Tie Mounts (3)
4. Zip Ties (3)
5. Wire Butt Connectors (2)
6. Top Mount Access Door (1)
(Provided only with kits
910118056, 910117228 and 910118057 for retrofit
purposes)
Required Tools
● 1/4" Hex driver & 5/16" Hex driver
● Wire Cutters/Wire Strippers
● Terminal Crimper
Procedure
1. Disconnect power.
2. Remove front panel.
a. For PDAE/PDHE unit refer to instruction #1 on how to
b. For PDAF/PDHF unit refer to instruction #1 on how to
and
3. Remove unit chassis from wall sleeve.
a. For PDAE/PDHE unit refer to instruction #2 on how to
b. For PDAF/PDHF unit refer to instruction #2 & #3 on
how to remove the cabinet wrap on
and also
Figure 7 and Figure 8 on page 4.
To remove the
chassis remove screws at locations shown in
Note: After completing steps 2a or 2b and 3a or 3b, continue
the Boost Fan installation as follows:
Figure 15: Remove the two (2) screws holding control box
to the chassis
Remove two (2) screws
holding control box
assembly to chassis
Control Box Assembly
4. Remove the two (2) screws holding the control box to the
5. Carefully tilt control box out, until resistance is felt from
the attached wiring. Do not pull excessively on control
box that could strain or damage wiring. Unplug the three
(3) terminal connectors located along the top of the board
(
). In some cases, with the premium control
board, there may be five (5) terminal connectors.
6. Remove the three (3) screws holding the control box cover
to the control box and remove cover (
).
Figure 16: Unplug terminal connectors located along top of
board and remove three (3) screws holding the control box
cover to the control box
Control Box
Remove the three
(3) screws holding
control box cover
to the control box
and remove
Remove the wire
connectors plugged
into the top of the
control board
