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Lennox C1DAMP20C-1 Installation Instructions Manual page 2

Outdoor air dampers and outdoor air hood used with 156-300s units

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FACTORY-INSTALLED HOOD PARTS LOCATION
FIGURE 1
Install Motorized Damper - C1DAMP20C-1
-
Continued
REMOVE HOOD TOP - FACTORY-INSTALLED OAD
TOP REAR
ACCESS PANEL
FIGURE 2
REMOVE TWO
SCREWS RETAINING
BOTTOM FILTER
BRACKET
BOTTOM FILTER
BRACKET
ADDITIONAL
HOOD PARTS IN
CARTON
FILTER ACCESS
PANEL
HOOD TOP
FIELD-INSTALLED OAD
TOP REAR
ACCESS
PANEL
4- Units NOT equipped with an A55 Unit Controller -
Open the DIP switch access cover on the damper
motor and adjust the setting. See figure 4.
5- Install damper assembly into top rear access opening
where the cover plate was secured. See figure 5.
Secure with retained screws.
6- From inside the filter access panel, remove the unit
jumper plug P3 from unit jack J3 and discard. See
figure 6.
7- Units equipped with an A55 Unit Controller -
Connect damper motor plug P4 to unit jack J3.
Discard P160 jumper harness included in the field kit.
8- Units NOT equipped with an A55 Unit Controller -
Connect the kit jumper harness plug P160 to unit jack
J3 and jumper jack J160 to the damper motor plug
P4. See figure 7.
9- Close the filter access panel.
10- Install the applicable wiring diagram in the control
compartment; discard the other diagram. Units
equipped with an A55 Unit Controller use the diagram
showing A55 in the key list. Units NOT equipped with
an A55 Unit Controller use the other diagram.
Page 2
DISCARD
FILTER ACCESS
COVER
PANEL
PLATE
FIGURE 3

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C1damp10c-1