31
#970 HEAT DUCT KIT INSTRUCTIONS
Register mounting frame and fan housing are designed to fit between 2” x 4” stud walls, 16” (406mm) on center.
Additional framing is required if larger opening exists.
1. Locate and mark register position.
2. Place register mounting bracket into opening.
A. Level and adjust mounting bracket. Side of mounting bracket should be flush with front of studs, front of mounting
bracket should protrude 1/2” (13mm) in front of studs, allowing enough room for sheetrock installation.
B. Secure mounting bracket to framing with (4) sheetrock screws, provided.
3. Install junction box on wall in desired location. This box will be used to house the speed control assembly, which controls fan speed
and operation.
4. Attach (but do not tighten) flange nuts to mounting studs at back of register mounting bracket.
5. Align (3) slots on fan assembly to studs, slide fan into position. Tighten nuts to secure.
6. Slide fan wire connectors, included, onto fan terminals.
7. Properly wire the 110 VAC wire to the hot & neutral fan wires and speed control wires with the wire nuts provided.
Run 110 VAC to fan speed control, then from fan speed control through the romex connector on the register bracket.
Secure grounding wire to the grounding screw installed in register mounting bracket.
INSTALL REGISTER MOUNTING FRAME, JUNCTION BOX, RUN WIRING
NOTE
Fan motor on heat duct kit may be on opposite side of fan shown in photos.
Romex connector and grounding screw are located on motor side of bracket.
IMPORTANT
Fan must be properly grounded. Use grounding screw (provided) to secure grounding wire to register mounting bracket.
Figure 31b
Figure 31a
