Broan/NuTone SC100W — Electronic Speed Control Installation Instructions

Installation instructions for the Broan/NuTone SC100W Model — a 3 Amp / 120 VAC electronic wall-mounted speed control for ventilators and fan motors.

Included

Wall Control & Instruction Sheet. Note: Wall plate is not included — use Broan Part No. S97012925 (or equivalent).

Control Specifications

• cULus Listed
• 120 VAC 60 Hz line power
• Typical wire sizes: 12 AWG (max) or 14 AWG solid or stranded copper wire
• Operating temperature: 32–122°F (0–50°C)
• Do not use with an impedance-protected motor unless specifically designed for use with an electronic speed control
• May only be used with a thermally protected shaded-pole or permanent split capacitor motor rated up to 3.0 AMPS @ 120 VAC

Safety

To reduce the risk of fire, electric shock, or injury to persons, observe the following:

1. Before installing the wall control, switch power off at the service panel and lock the service disconnecting means to prevent accidental power restoration. If it cannot be locked, securely fasten a prominent warning tag to the service panel. Caution: Risk of Electric Shock — more than one disconnect switch may be required to de-energize equipment before servicing.
2. All electrical work must comply with local codes, ordinances, or the National Electrical Code, including fire-rated construction codes and standards. For safety, this product must be grounded. If unfamiliar with wiring methods, secure the services of a qualified electrician.
3. Use copper wire only.
4. Warning: This device shall not be used in combination with a wall switch controlling a receptacle.
5. Install only in a UL-Listed junction box sized 2.0 x 3.0 x 3.0 in. (50.8 x 76.2 x 76.2 mm) or larger, with a minimum volume of 18.0 in³ (295 cm³).
6. When cutting or drilling into a wall or ceiling, do not damage electrical wiring or other hidden utilities.
7. To prevent serious injury from electrical shock or damage to electrical components — DO NOT WIRE HOT!

Warranty is void if miswired.

Installation

Note: This control requires a 120 VAC source in the switch box to operate.

1. Turn off the power and lock out the service panel before wiring the control.
2. Install the wall control in at least a 3" deep switch box for #14 AWG wire, or at least a 3½" deep switch box for #12 AWG wire. The control can be installed in either a metal or plastic outlet box.
3. Attach the incoming power line and ventilator power line to the switch box. It may be necessary to use two side knockouts for some applications. Use proper connectors. Provide 6" leads inside the box and ventilation product.
4. Make electrical connections following the wiring diagram provided. Use wire nuts. Make sure both the control and the ventilator are properly grounded. Wire terminals accept up to #12 AWG max solid and stranded wire:
   1. Loosen the combination screw/washer from the terminals.
   2. Wrap the stripped end of the wire around the screw thread, under the washer.
   3. Tighten the screw/washer, making sure the wire remains under the washer. Torque the terminal screws to 15.9–19.5 in-lbs (1.8–2.2 N·m).
   4. Note: The screw/washer is not designed for straight insertion of stripped wire — use only wire formed into a "J" loop wrapped around the screw thread for proper mechanical and electrical connection.
5. Tuck wires in and fasten the control to the switch box using the attached screws. Verify wall control orientation before installation — note the "TOP" direction shown on the wall control label.
6. Attach the switch plate (not included) using color-matched oval head screws.

Wiring Diagram Summary

The control wires in-line between the 120 VAC line-in and the motor: BLACK (line) → Speed Control → BLACK (motor); WHITE (line) → WHITE (motor); GROUND (switch box) → GROUND (appliance).

Warranty, Support & Registration

For a Warranty Statement, service parts, technical support, or to register your product, visit the website or call:

• United States: Broan.com, 800-637-1453 or NuTone.com, 888-336-6151
• Canada: Broan.ca or NuTone.ca, 877-896-1119