1. Introduction
Thank you for choosing the DEWENWILS 150W Low Voltage Landscape Lighting Transformer. This device is designed to convert standard 120VAC household current to a safe 12V or 15V AC output, suitable for various outdoor low-voltage lighting applications. Featuring a built-in photocell sensor and programmable timer, it offers flexible control options for your landscape lights, ensuring energy efficiency and convenience.
2. Important Safety Information
Please read and understand all instructions before installing or operating this transformer. Failure to follow these instructions may result in electric shock, fire, or other hazards.
- Always disconnect power at the circuit breaker before installation or servicing.
- This transformer is designed for outdoor use and must be mounted in a location protected from direct water spray.
- Ensure all wiring connections are secure and properly insulated to prevent short circuits.
- Do not overload the transformer. Calculate the total wattage of your connected lights and ensure it does not exceed the transformer's maximum output (150W).
- Use only low-voltage landscape lighting cable of appropriate gauge for your total wattage and cable length, as specified in the wiring chart.
3. Package Contents
Verify that all items are present in the package:
- DEWENWILS 150W Low Voltage Landscape Transformer
- Detachable Photocell Sensor
- Mounting Hole Template
- Mounting Screws and Anchors
- Instruction Manual
4. Product Overview
The DEWENWILS 150W Low Voltage Landscape Transformer features a durable metal casing and an intuitive control panel for easy operation.
Figure 4.1: Front view of the DEWENWILS 150W Low Voltage Landscape Transformer, showing the digital display and control buttons.
Control Panel Features:
Figure 4.2: The control panel with indicators for various operating modes and time display.
- Digital Display: Shows current time and programming settings.
- Mode Indicators: LEDs for Manual, Auto, Photo On/Timer Off, Timer On/Timer Off, and Test modes.
- Buttons: MENU, UP (▲), DOWN (▼), OK for navigation and setting adjustments.
- Photocell Sensor Port: Located at the bottom, for connecting the external photocell sensor.
- Terminal Block: Screw terminals for connecting low-voltage landscape lighting wires (Common, 12V, 15V).
5. Setup and Installation
5.1 Mounting the Transformer
The transformer should be mounted vertically on a sturdy surface, such as a wall or post, at least 1 foot (30 cm) above ground level. Use the provided mounting hole template to mark drill points.
Figure 5.1: Step 2 of installation, showing the transformer being mounted to a wall.
- Place the mounting hole template on the desired surface and mark the two drill points.
- Drill pilot holes at the marked locations. Insert the provided anchors if mounting into masonry.
- Secure the transformer to the surface using the provided mounting screws. Ensure it is firmly attached.
5.2 Connecting Low Voltage Wiring
Before connecting any wires, ensure the transformer is unplugged from the main power supply.
Figure 5.2: Step 1 of installation, showing wires being connected to the terminal blocks.
- Strip approximately 1/2 inch (1.2 cm) of insulation from the ends of your low-voltage landscape lighting cables.
- Connect one wire from your lighting circuit to a 'COM' (Common) terminal.
- Connect the other wire from your lighting circuit to either a '12V' or '15V' terminal, depending on the voltage requirements of your lights and desired brightness. For longer cable runs or higher wattage, 15V may be preferred to compensate for voltage drop.
- Tighten the screw terminals securely to ensure good electrical contact.
Cable Selection Chart:
Refer to the following chart to select the appropriate cable gauge (AWG) based on total fixture wattage and cable length to prevent voltage drop and ensure optimal performance.
| Voltage Tap | Total Fixture Wattage | Cable Length (0-50 feet) | Cable Length (51-100 feet) | Cable Length (100-150 feet) |
|---|---|---|---|---|
| 12 VOLT | 0-60 Watts | 16 AWG | 16 AWG | 14 AWG |
| 61-120 Watts | 16 AWG | 14 AWG | 12 AWG | |
| 121-180 Watts | 14 AWG | 12 AWG | Not Recommended | |
| 181-240 Watts | 12 AWG | Not Recommended | Not Recommended | |
| 241-300 Watts | 12 AWG | Not Recommended | Not Recommended | |
| 15 VOLT | 0-60 Watts | 16 AWG | 16 AWG | 16 AWG |
| 61-120 Watts | 16 AWG | 14 AWG | 12 AWG | |
| 121-180 Watts | 14 AWG | 12 AWG | Not Recommended | |
| 181-240 Watts | 12 AWG | Not Recommended | Not Recommended | |
| 241-300 Watts | 12 AWG | Not Recommended | Not Recommended |
5.3 Connecting the Photocell Sensor
The detachable photocell sensor allows for automatic dusk-to-dawn operation. Plug the sensor cable into the dedicated port at the bottom of the transformer. Position the sensor in a location that receives natural light and is not obstructed by artificial light sources at night.
Figure 5.3: The photocell sensor automatically activates lighting at dusk and deactivates at dawn.
6. Operating Instructions
Once installed and wired, plug the transformer into a standard 120VAC outlet. The digital display will illuminate.
6.1 Setting the Clock
- Press the 'MENU' button until 'CLOCK' is displayed or the clock icon flashes.
- Use the '▲' and '▼' buttons to adjust the hour, then press 'OK' to confirm.
- Repeat for minutes and AM/PM setting.
6.2 Selecting Operating Modes
The transformer offers 5 operating modes. Press the 'MENU' button to cycle through the modes and use 'OK' to select or confirm settings.
- Manual On/Off: Lights remain on or off until manually changed. Press 'OK' to toggle between ON and OFF.
- Auto On/Off: Lights turn on at dusk and off at dawn, controlled by the photocell sensor.
- Photo On/Timer Off: Lights turn on at dusk (via photocell) and turn off after a set duration (e.g., 4, 6, 8 hours). Use '▲' and '▼' to set the duration.
- Timer On/Timer Off: Lights turn on and off at specific programmed times. Set ON time and OFF time using '▲' and '▼' buttons.
- Test Mode: Activates lights for a short period (e.g., 1 minute) to verify connections and functionality.
6.3 Memory Function
The transformer includes a memory function that retains your selected operating mode and settings even after a power outage, eliminating the need for frequent re-programming.
7. Maintenance
- Periodically inspect the transformer casing for any signs of damage or corrosion.
- Ensure all wire connections are tight and free from debris.
- Keep the photocell sensor clean and free from obstructions to ensure accurate dusk-to-dawn operation.
- Clean the exterior of the transformer with a soft, damp cloth. Do not use abrasive cleaners or solvents.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Lights not turning on | No power to transformer Loose wire connections Overloaded circuit Incorrect mode selected Faulty photocell sensor | Check power outlet and circuit breaker Tighten all terminal screws Reduce total wattage of lights Select appropriate operating mode Test photocell sensor or replace if necessary |
| Lights stay on/off constantly | Photocell sensor obstructed or faulty Incorrect timer settings Manual mode selected | Clear obstruction from photocell or test/replace Verify and adjust timer settings Switch to Auto or Photo On/Timer Off mode |
| Lights are dim | Voltage drop due to long cable run or incorrect gauge Too many lights connected | Refer to cable selection chart for proper gauge and length Reduce number of lights or use a higher wattage transformer |
9. Specifications
- Brand: DEWENWILS
- Model Number: HCLT03H1
- Input Voltage: 120VAC
- Output Voltage: 12V/15VAC
- Maximum Output Power: 150W
- Power Source: Corded Electric
- Mounting Type: Wall Mount
- Material: Metal (Sun-resistant, corrosion-proof)
- Certification: UL Listed
- Package Dimensions: 9.92 x 7.6 x 6.61 inches
- Item Weight: 8.33 Pounds
10. Warranty and Support
For warranty information, technical support, or assistance with your DEWENWILS 150W Low Voltage Landscape Lighting Transformer, please contact DEWENWILS customer service. Refer to the product packaging or the official DEWENWILS website for contact details.