1. Introduction
The Wattstopper BZ-50 is a robust power pack designed to provide power and switching capabilities for low voltage occupancy sensors and other control devices. It facilitates automatic and manual control of lighting and other electrical loads, operating across 120V, 230V, and 277V systems with a 20 Amp capacity. This manual provides essential information for the safe installation, operation, and maintenance of your BZ-50 unit.
2. Safety Information
WARNING: RISK OF ELECTRIC SHOCK. Installation should be performed by a qualified electrician in accordance with all local and national electrical codes. Disconnect power at the circuit breaker or fuse before installing or servicing. Failure to follow these instructions may result in serious injury or death.
- Ensure the power supply is completely disconnected before any wiring or maintenance.
- Do not exceed the specified voltage and current ratings of the device.
- Use appropriate wire gauges for connections as per electrical codes.
- This device is intended for indoor use only.
3. Key Features
- Automatic or manual switching options for connected loads.
- Simple retrofit installation and operation; no Neutral needed for certain configurations.
- Shutoff warning with optional audible beep during grace period before automatic deactivation.
- Pushbutton functionality allows overriding automatic shutoff events.
- Supports multi-way operation for 3- and 4-way switching systems.
4. Setup and Installation
The BZ-50 power pack is designed for easy retrofit installation. Refer to the wiring diagram provided with the product packaging for specific connection details. Ensure all connections are secure and properly insulated.
Image: Wattstopper BZ-50 Power Pack with Wiring
This image shows the Wattstopper BZ-50 power pack with its various colored wires for connection. The unit features a compact design with ventilation holes on the top surface, indicating its electrical nature and need for proper air circulation.
4.1 Wiring Connections
Connect the BZ-50 to the appropriate power supply and load circuits. The unit is compatible with 120V, 230V, and 277V systems. Ensure the current rating of 20 Amps is not exceeded. The BZ-50 can be integrated into multi-way switching setups, allowing for flexible control configurations.
5. Operating Instructions
The BZ-50 offers both automatic and manual control modes for connected loads.
5.1 Automatic Control
In automatic mode, the unit responds to signals from connected occupancy sensors or other lighting control systems to turn loads on or off. The BZ-50 acts as the relay, switching power to the connected devices based on the input signals.
5.2 Manual Control and Override
For manual control, users can directly operate the connected loads via a pushbutton or switch connected to the BZ-50. A shutoff warning, which can include an optional audible beep, precedes the automatic shutoff event, providing a grace period. The pushbutton on the device allows for overriding an automatic shutoff event, keeping the loads active even if the sensor detects no occupancy.
6. Maintenance
The Wattstopper BZ-50 is designed for maintenance-free operation under normal conditions. To ensure optimal performance and longevity:
- Keep the unit free from excessive dust and debris.
- Periodically inspect all wiring connections to ensure they remain secure.
- Do not attempt to open or repair the unit yourself; refer servicing to qualified personnel.
7. Troubleshooting
If you encounter issues with your BZ-50, refer to the following common troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| Loads do not turn on/off automatically. | No power to BZ-50, faulty sensor connection, incorrect sensor settings. | Verify power supply to the BZ-50. Check wiring to the occupancy sensor. Ensure sensor is configured correctly. |
| Loads do not respond to manual pushbutton. | Incorrect wiring to pushbutton, faulty pushbutton. | Inspect pushbutton wiring. Test pushbutton functionality. |
| Unit is not receiving power. | Circuit breaker tripped, loose wiring connection. | Check circuit breaker and reset if tripped. Verify all power connections are secure. |
| Audible beep warning is not functioning. | Feature disabled, internal fault. | Consult the full product documentation for configuration options. If issue persists, contact support. |
8. Specifications
| Specification | Detail |
|---|---|
| Brand | Watt Stopper |
| Model | BZ-50 |
| Power Source | Corded Electric |
| Mounting Type | Panel Mount or Chassis Mount |
| Current Rating | 20 Amps |
| Voltage Compatibility | 120V, 230V, 277V |
| Maximum Frequency | 60 Hz |
| Item Weight | 1.6 ounces |
| Specification Met | UL |
| UPC | 754182922901, 696504768753 |
| Global Trade Identification Number | 00754182922901 |
| Manufacturer | WATTSTOPPER |
9. Warranty and Support
For warranty information, technical assistance, or to inquire about replacement parts, please contact Watt Stopper customer service. Keep your purchase receipt and product serial number handy for any warranty claims. Detailed contact information can typically be found on the manufacturer's official website or product packaging.
Image: Wattstopper BZ-50 Product Packaging
This image displays the brown cardboard packaging for the Wattstopper BZ-50 Power Pack. The label clearly indicates 'WattStopper', 'Cat. No. BZ-50', 'Power Pack', '120/230/277V, 50/60Hz', and 'Made in China'. A UL certification mark and UPC barcode are also visible.
