1. Product Overview
The WattStopper BZ-200 is a robust power pack designed to provide 24VDC power to WattStopper occupancy sensors and other control devices, while also switching line voltage loads. It integrates seamlessly into lighting and plug-load control systems, offering reliable performance for various applications. This device is suitable for controlling a variety of load types including ballast, ELV, MLV, tungsten, LED, and plug loads.
2. Important Safety Information
Please read and understand all instructions before installing or operating this product. Failure to follow these instructions may result in electrical shock, fire, or property damage.
- Disconnect Power: Always disconnect power at the circuit breaker or fuse box before installing or servicing the BZ-200 Power Pack.
- Qualified Personnel: Installation and wiring should only be performed by a qualified electrician in accordance with all national and local electrical codes.
- Voltage Compatibility: Ensure the supply voltage matches the power pack's specifications (120-277 VAC).
- Class 2 Wiring: The 24VDC output is Class 2. Use only Class 2 wiring for low voltage connections to sensors and control devices.
- Plenum Rated: The BZ-200 is UL 2043 Plenum Rated, allowing for installation in plenum spaces when permitted by local codes.
3. Key Features
- Input Voltage: 120-277 Volt AC, 50/60 Hz.
- Output Voltage: 24 Volt DC for sensor power.
- Load Capacity: 20A @ 120V for plug loads, 20A for Ballast/ELV/MLV/Tungsten/LED lighting, 16A for E-Ballast/CFL, and 1HP @ 120/240VAC.
- Single Phase Operation: Designed for single-phase electrical systems.
- Color: White finish.
- UL Listed: Appliance Control 88T9.
- Plenum Rated: UL 2043 compliant for plenum applications.
4. Installation Instructions
The BZ-200 Power Pack is designed for easy installation in a junction box or directly to a fixture. Ensure all connections are secure and comply with local electrical codes.
4.1 Wiring Diagram
Image Description: This image displays the WattStopper BZ-200 Power Pack, a white rectangular device with a threaded conduit connector. The label on the device provides detailed electrical specifications and a wiring diagram. Key specifications include: 120-277 VAC (1φ), 50/60 Hz input; 20A Ballast/ELV/MLV/Tungsten/LED, 16A E-Ballast/CFL, 1HP @ 120/240VAC, and 20A 120VAC Plug Load output. It also specifies Class 2 Output: 24 VDC, 225 mA and is UL 2043 Plenum Rated. A prominent warning states 'Class 2 wiring only'. The wiring diagram illustrates connections for Neutral (White), Hot (Black, Green), and Ground. The Power Pack connects to a Lighting Load via Red wires and to an external 3-wire 24VDC sensor via Red (+24VDC), Black (Common), and Blue (Control) wires. The diagram also shows a switch between the Power Pack and the Lighting Load. The bottom of the label includes 'Watt Stopper', their website 'www.wattstopper.com', and phone number '800.879.8585'.
4.2 Wiring Steps
Follow these steps for proper wiring:
- Power Disconnection: Ensure power is OFF at the circuit breaker before beginning any wiring.
- Line Voltage Input:
- Connect the building's Neutral wire to the White wire of the Power Pack.
- Connect the building's Hot wire to the Black wire of the Power Pack.
- Connect the building's Ground wire to the Green wire of the Power Pack.
- Load Connection:
- Connect the Red wire from the Power Pack to the Lighting Load. An optional switch can be wired in series with this connection.
- Sensor Connection (Class 2 Wiring Only):
- Connect the Red wire from the Power Pack to the +24VDC input of a 3-wire 24VDC sensor.
- Connect the Black wire from the Power Pack to the Common terminal of the sensor.
- Connect the Blue wire from the Power Pack to the Control input of the sensor.
- Secure Connections: Ensure all wire nuts or connectors are tight and properly insulated.
- Restore Power: Once all connections are verified, restore power at the circuit breaker.
5. Operation
The BZ-200 Power Pack operates in conjunction with a connected 24VDC occupancy sensor. When the sensor detects occupancy, it sends a signal to the power pack via the control wire (Blue). The power pack then closes its internal relay, supplying power to the connected lighting or plug load. When the sensor no longer detects occupancy for a preset time, it signals the power pack to open the relay, turning off the load.
- Automatic Control: The system provides automatic on/off control of loads based on occupancy.
- Manual Override (Optional): If an optional manual switch is installed, it can be used to override the automatic control, typically to turn the lights off manually.
6. Maintenance
The WattStopper BZ-200 Power Pack is designed for maintenance-free operation. However, periodic inspection is recommended to ensure optimal performance.
- Cleaning: If necessary, gently wipe the exterior of the power pack with a dry, soft cloth. Do not use abrasive cleaners or solvents.
- Inspection: Periodically check for any visible damage to the wiring or casing. Ensure all connections remain secure.
- Power Cycle: If the unit appears to be malfunctioning, try cycling the power at the circuit breaker for a few seconds to reset it.
7. Troubleshooting
If the BZ-200 Power Pack is not functioning as expected, consider the following common issues and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Load does not turn ON. | No power to the power pack. Incorrect wiring. Faulty sensor. Load issue. | Check circuit breaker. Verify line voltage wiring (Black, White, Green). Test sensor functionality. Check the load (e.g., light bulb). |
| Load does not turn OFF. | Sensor constantly detecting occupancy. Sensor wiring issue. Power pack relay stuck. | Check sensor placement and sensitivity. Verify sensor control wiring (Red, Black, Blue). If problem persists, power cycle the unit. |
| Intermittent operation. | Loose wiring connections. Interference with sensor. | Inspect all wiring connections for tightness. Check for sources of interference near the sensor. |
8. Technical Specifications
- Manufacturer: Wattstopper
- Model Number: BZ-200
- Input Voltage: 120-277 VAC, 50/60 Hz
- Output Voltage (Class 2): 24 VDC, 225 mA
- Amperage Capacity: 20 Amps
- Load Types: Ballast/ELV/MLV/Tungsten/LED (20A), E-Ballast/CFL (16A), 1HP @ 120/240VAC, 120VAC Plug Load (20A)
- Power Source: Wired Electric
- Color: White
- Finish: White
- Item Weight: 7.8 ounces
- Product Dimensions: 5 x 4 x 3 inches
- Certifications: UL Listed (Appliance Control 88T9), UL 2043 Plenum Rated
9. Warranty and Technical Support
For warranty information or technical assistance, please contact Watt Stopper directly. Refer to the product packaging or the official Watt Stopper website for the most current contact details and warranty terms.
- Website: www.wattstopper.com
- Phone: 800.879.8585
