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Run power cable to installation location. Refer to the instructions included with the
selected blower or rough-in kit (sold separately) for details on installing the rough-in
plate. Install the rough-in plate so that the wiring box is located on the right side
as you are facing the hood.
For ducting through back of hood, remove existing plate from inside back of hood
and attach to inside top of hood to cover hole. Secure to threaded studs with same
(4) nuts.
For ducting through top of hood, existing plate remains in place on inside back of
hood.
Connect ducting to transition or rough-in plate as you are installing the rough-in
plate. Use duct tape to make all joints secure and air-tight.
8. INSTALL THE ROUGH-IN PLATE TO THE HOOD
1
1
1
1
2
3
HD0063
1. Locknuts
2. Plate on top of
hood
3. Rough-in plate on
back of hood
4. Wiring Cover
Model 423, 424, 427, 453, or 454
Attach transition (if required) to blower rough-in plate.
Use duct tape to make all joints secure and air-tight.
NOTE: Model RM325H blower plate connects directly to 7" round ductwork without a
transition.
Exterior blower models utilize a model 332KR rough-in plate which connects
directly to 10” round ductwork without a transition.
7. INSTALL TRANSITION TO ROUGH-IN PLATE
HD0049
4
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