1. Introduction
The Broan-NuTone BK115LWH Door Chime Kit provides a reliable solution for residential doorbell systems. This kit includes a lighted rectangular pushbutton and a chime unit designed to differentiate between front and back door visitors. The chime unit produces a two-note sound for the front door and a single-note sound for the back door. Its white textured cover offers a neutral aesthetic suitable for various home interiors.

Image 1.1: The Broan-NuTone BK115LWH Door Chime Kit, featuring a white textured cover and lighted pushbutton.
2. Safety Information
Please read and understand all instructions before beginning installation. Failure to follow these instructions may result in electric shock, fire, or other hazards. Always observe basic safety precautions when working with electrical components.
- Disconnect Power: Always turn OFF power to the doorbell circuit at the main service panel (breaker box) before installing or servicing the chime unit or pushbutton.
- Qualified Electrician: If you are unsure about any part of the installation process, consult a qualified electrician.
- Proper Wiring: Ensure all wiring connections are secure and comply with local electrical codes.
- Voltage Compatibility: Use only with a compatible 16V AC doorbell transformer.
3. Package Contents
Verify that all components are present before starting installation:
- 1 x Chime Unit (White, textured cover)
- 1 x Lighted Rectangular Pushbutton
- 1 x Doorbell Transformer (16V AC)
- Mounting Hardware (screws)
- Instruction Sheet
4. Setup and Installation
Follow these steps for proper installation of your Broan-NuTone Door Chime Kit:
- Turn Off Power: Locate your home's main electrical service panel and turn off the circuit breaker that supplies power to your existing doorbell system or the area where you will install the new system.
- Mount the Chime Unit:
- Choose an indoor location for the chime unit where it can be easily heard throughout your home.
- Secure the chime unit to the wall using the provided mounting screws.
- Wire the Chime Unit:
- Connect the low-voltage wiring from your front door pushbutton to the terminal labeled 'FRONT' on the chime unit.
- If installing a second pushbutton (e.g., for a back door), connect its wiring to the terminal labeled 'REAR' on the chime unit.
- Connect the wiring from the doorbell transformer to the terminal labeled 'TRANS' on the chime unit.
- Install the Transformer:
- Install the 16V AC transformer according to its specific instructions and local electrical codes. This typically involves connecting it to a junction box or directly to a circuit.
- Mount the Pushbutton:
- Install the lighted rectangular pushbutton at your desired exterior door location (e.g., front door).
- Connect the low-voltage wiring from the chime unit to the terminals on the back of the pushbutton.
- Restore Power and Test:
- Once all connections are secure and verified, restore power to the circuit at the main service panel.
- Press the front door pushbutton to confirm the two-note chime.
- If a back door pushbutton is installed, press it to confirm the single-note chime.
Video 4.1: Demonstration of the Broan-NuTone Builder Chimes Kit, showing the exterior pushbutton and the interior chime unit in operation.
5. Operating Instructions
The Broan-NuTone BK115LWH Door Chime Kit is designed for straightforward operation:
- Front Door Activation: When the front door pushbutton is pressed, the chime unit will produce a distinct two-note sound, indicating a visitor at the main entrance.
- Back Door Activation: If a back door pushbutton is installed and wired to the 'REAR' terminal, pressing it will produce a single-note sound, allowing you to differentiate visitors at secondary entrances.
- The lighted pushbutton provides visibility in low-light conditions.
6. Maintenance
To ensure the longevity and optimal performance of your door chime kit, follow these maintenance guidelines:
- Cleaning: Periodically clean the exterior of the chime unit and pushbutton with a soft, slightly damp cloth. Avoid using harsh chemicals, abrasive cleaners, or solvents, as these can damage the finish.
- Plunger Inspection: If the chime sound becomes weak or inconsistent, inspect the internal plungers of the chime unit. Ensure they move freely and are not obstructed by dust or debris. Refer to any internal labels for specific cleaning instructions; typically, a few drops of non-flammable cleaning fluid can be used for sticking plungers. Do not oil plungers.
- Wiring Check: Annually, or if issues arise, visually inspect all wiring connections at the chime unit, transformer, and pushbuttons to ensure they remain tight and free from corrosion.
7. Troubleshooting
If you encounter problems with your Broan-NuTone Door Chime Kit, refer to the following troubleshooting steps:
- No Chime Sound:
- Check Power: Ensure the circuit breaker supplying power to the doorbell system is ON.
- Verify Wiring: Confirm all wires are securely connected to the correct terminals on the chime unit, transformer, and pushbuttons. Loose connections are a common cause of failure.
- Inspect Plungers: Open the chime unit cover and gently push the plungers. They should move freely. If stuck, clean as per maintenance instructions.
- Test Transformer: If you have a multimeter, check the voltage output of the transformer. It should be approximately 16V AC.
- Weak or Inconsistent Chime Sound:
- Loose Connections: Re-check all wiring connections for tightness.
- Transformer Output: A transformer providing insufficient voltage can lead to weak chimes. Consider replacing the transformer if it's old or not providing adequate power.
- Plunger Condition: Worn or dirty plungers can affect sound quality. Clean or replace if necessary.
- Pushbutton Light Not Working:
- Wiring: Ensure the pushbutton is correctly wired and receiving power from the chime unit.
- Bulb Replacement: The light in the pushbutton is typically a small incandescent bulb or LED. If it's a bulb, it may have burned out and require replacement.
8. Specifications
| Feature | Specification |
|---|---|
| Brand | Broan-NuTone |
| Model Name | BK115LWH |
| Color | White |
| Material | Plastic |
| Style | Lighted Pushbutton |
| Product Dimensions (Pushbutton) | 1.76"L x 1.04"W x 1.11"H |
| Finish Type | White |
| Item Weight | 16 ounces (approx. for kit) |
| Sound Profile | Two-note (Front Door), One-note (Back Door) |
| Power Requirement | 16V AC (Transformer Included) |
| Assembly Required | No (Installation Required) |
| Batteries Required | No |
9. Warranty and Support
Warranty Information: This Broan-NuTone product is covered by a manufacturer's warranty. Please refer to the product packaging or the official Broan-NuTone website for the most current and detailed warranty terms and conditions. Typically, doorbell chime kits are covered for a period of one year from the date of purchase against defects in materials and workmanship.
Customer Support: For technical assistance, troubleshooting guidance, or to inquire about replacement parts, please contact Broan-NuTone Customer Service. You can find contact information, FAQs, and additional resources on the official Broan-NuTone website: www.broan-nutone.com.





