1. Introduction
The Alerton VisualLogic Display (VLD) is a communicating sensor-controller combination featuring built-in temperature and humidity sensors. It is designed for common applications such as rooftop units, fan-coil units, and heat pumps. This device offers a cost-effective solution for in-room hotel requirements, providing an easy-to-use interface, a clear digital display, and the ability to switch between Celsius and Fahrenheit. The VLD-362W model includes an integrated wireless receiver for communication with various sensors, detecting occupancy and whether doors or windows are open or closed, and reporting this data to the front-end Building Automation System (BAS).
2. Product Overview
An image showing the Alerton VLD-362 Visual Logic Display Sensor-Controller. The device is white with a green digital display showing 'Inside 72', 'Set To 72', '12:54 pm', and '20% Humidity'. Buttons for 'FAN', 'SYSTEM', 'AUTO', 'SCHED', 'CLOCK', 'SCREEN', and 'MORE' are visible. The brand 'ALERTON' is printed at the bottom.
Key Features:
- Communicating sensor-controller combination with built-in temperature and humidity sensor.
- Designed for common applications such as rooftop units, fan-coil units, and heat pumps.
- Cost-effective solution for in-room hotel requirements.
- Easy-to-use interface and clear digital display.
- Celsius/Fahrenheit change-over capability.
- Integrated wireless receiver (VLD-362W model) for communication with occupancy, door, and window sensors.
3. Setup Instructions
3.1 Mounting
- Select a suitable indoor location away from direct sunlight, drafts, or heat sources that could affect temperature readings.
- Ensure the mounting surface is flat and stable.
- Carefully open the device casing to access the mounting holes.
- Secure the device to the wall using appropriate screws and anchors.
- Close the casing securely after mounting.
3.2 Wiring
- WARNING: Ensure all power to the HVAC system and the controller is disconnected before beginning wiring.
- Refer to the wiring diagram provided with your specific unit for terminal connections.
- Connect the power supply wires to the designated power terminals.
- Connect the communication wires (e.g., BACnet MS/TP) to the appropriate communication terminals, ensuring correct polarity.
- Connect the control wires to the HVAC equipment (e.g., fan, heating, cooling stages) as per the system design.
- Verify all connections are secure and correctly terminated.
3.3 Initial Power-Up
- Restore power to the HVAC system and the Alerton VLD-362.
- The display should illuminate and show initial boot-up information.
- Follow any on-screen prompts for initial configuration, such as date, time, and unit settings (Celsius/Fahrenheit).
4. Operating Instructions
4.1 Display Navigation
The VLD-362 features a clear digital display with various buttons for navigation and control. The main screen typically shows current indoor temperature, setpoint, time, and humidity.
4.2 Setting Temperature
- Use the Up and Down arrow buttons next to the 'Set To' display to adjust the desired temperature setpoint.
- The display will show the new setpoint as you adjust it.
4.3 System Mode Selection
Press the SYSTEM button to cycle through available system modes such as:
- HEAT: Activates heating function.
- COOL: Activates cooling function.
- AUTO: Automatically switches between heating and cooling based on setpoints.
- OFF: Turns off the HVAC system.
4.4 Fan Mode Selection
Press the FAN button to cycle through fan operation modes:
- AUTO: Fan runs only when heating or cooling is active.
- ON: Fan runs continuously.
4.5 Scheduling (SCHED)
Press the SCHED button to access and modify the programmed schedule. Refer to the on-screen prompts for setting daily or weekly schedules for temperature and system modes.
4.6 Clock and Screen Settings
- Press CLOCK to adjust the current time and date.
- Press SCREEN to adjust display brightness or contrast settings.
5. Maintenance
5.1 Cleaning the Device
- Wipe the exterior of the VLD-362 with a soft, damp cloth.
- Do not use abrasive cleaners, solvents, or chemical sprays, as these can damage the display or casing.
- Ensure no liquid enters the device.
5.2 Sensor Calibration (Advanced)
The temperature and humidity sensors are factory calibrated. If you suspect inaccurate readings, consult a qualified HVAC technician or Alerton support for potential recalibration procedures. Do not attempt to recalibrate without proper tools and knowledge.
5.3 Firmware Updates
Periodically check the Alerton official website or consult your system integrator for available firmware updates. Firmware updates can provide performance improvements and new features. Follow the provided instructions carefully when performing updates.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Display is blank or not responding. | No power; loose wiring; internal fault. | Check power supply to the unit. Verify wiring connections. If problem persists, contact support. |
| Incorrect temperature/humidity readings. | Sensor obstruction; improper mounting location; sensor fault. | Ensure no objects are blocking the sensor vents. Verify the device is mounted in an appropriate location. Contact support if readings remain inaccurate. |
| HVAC system not responding to controller. | Incorrect wiring; communication issue; HVAC system fault. | Check all wiring connections between the controller and HVAC system. Verify communication settings. Ensure HVAC system is powered on and functional. |
| Cannot change settings or access menus. | Keypad lockout; system error. | Check if a keypad lockout feature is enabled (refer to advanced settings). Try power cycling the device. |
7. Specifications
| Attribute | Value |
|---|---|
| Brand | Alerton |
| Manufacturer | Alerton |
| Model Number | 010338049213 |
| Item Weight | 401 g |
| Package Dimensions | 19.3 x 13.9 x 5.3 cm |
| ASIN | B081ZLR83C |
| Date First Available | 10 January 2020 |
| Net Quantity | 1.0 count |
8. Warranty and Support
Alerton products are designed for reliability and performance. For specific warranty information regarding your VLD-362 Visual Logic Display Sensor-Controller, please refer to the warranty card included with your product or visit the official Alerton website. For technical support, troubleshooting assistance beyond this manual, or service inquiries, please contact Alerton customer support or your authorized Alerton dealer. Ensure you have your model number and purchase details ready when contacting support.
Alerton Official Website: www.alerton.com
