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8
HO0137
11. INSTALL THE ADAPTER/DAMPER (SINGLE BLOWER MODEL ONLY)
VERTICAL DISCHARGE INSTALLATION
Using 2 no. 8 x 3/8’’ screws provided in parts bag, secure the
adapter/damper to the top of the power pack. Remove tape from
damper flap. Seal the adapter to the power pack using metal foil
duct tape.
HORIZONTAL DISCHARGE INSTALLATION
HJ0035
MOUNTING SCREW LOCATIONS
The adapter/damper will be installed on the back of the power pack once the power pack is mounted in the custom hood. Refer to step 15.
Using 2 no. 8 x 3/8’’ screws from parts bag, assemble the adapter on the top of the power pack.
Seal all joints with metal foil duct tape to eliminate air leaks.
12. INSTALL THE ADAPTER AND THE DAMPER (DUAL BLOWER MODEL ONLY)
17” min.
HJ0036A
DAMPER HINGE
PARALLEL TO
POWER PACK
SIDES
Install 10” damper inside the VERTICAL ductwork that will be attached to power pack. Do not install
in a horizontal ductwork or it will not open and close properly. Remove shipping tape if present.
To optimize airflow and reduce noise, position the damper at least 17” above the top of the double
blower power pack; or as far as the duct run will allow. Also, ensure the damper hinge will be parallel
to power pack sides (see figure at right). Secure the damper to the duct with 3 no. 8 sheet metal
screws (not provided). Ensure damper opens and closes freely. Seal all joints with metal foil duct
tape to eliminate air leaks.
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