Drexma UDG-4999
Drexma UDG-4999 Programmable Floor Thermostat User Manual
Model: UDG-4999
Introduction
This manual provides comprehensive instructions for the installation, operation, and maintenance of the Drexma UDG-4999 Programmable Floor Thermostat. This device is designed to control electric radiant floor heating systems, ensuring optimal comfort and energy efficiency. Please read this manual thoroughly before installation and operation to ensure proper use and safety.
Figure 1: Front view of the Drexma UDG-4999 Programmable Floor Thermostat, showing the large display and control buttons.
Safety Information
WARNING: Installation must be performed by a qualified electrician in accordance with local electrical codes. Disconnect power at the circuit breaker before installation or servicing to prevent electrical shock.
- Ensure the power supply is disconnected before any wiring.
- The thermostat is designed for indoor use only.
- Do not expose the thermostat to water or excessive humidity.
- The built-in Class A GFCI provides ground fault protection; test it regularly as per local codes.
Product Features
- Programmable for optimal comfort and energy consumption.
- Simple user interface and thoughtful installation design.
- Monitored energy consumption display.
- Large back-lit display for easy reading.
- Multi-voltage compatibility: 120-240 V (including 208 V).
- Output relay: 15 A.
- 15 mA EGFPD for ground fault protection.
- Wi-Fi Connectivity for smart home integration.
Setup and Installation
The Drexma UDG-4999 thermostat is designed for efficient setup and fits neatly into standard electrical boxes. Professional installation is recommended.
Package Contents:
- Drexma UDG-4999 Thermostat Unit
- Floor Sensor
- Mounting Screws
- User Manual (this document)
Figure 2: The Drexma UDG-4999 Thermostat and its packaging, illustrating the product's appearance.
Wiring Instructions:
- Turn off Power: Locate the circuit breaker controlling the floor heating circuit and turn off the power. Verify power is off using a voltage tester.
- Mounting: Install the thermostat into a standard electrical box.
- Connect Power Wires: Connect the incoming line voltage wires (L1 and L2/N) to the corresponding terminals on the thermostat. Ensure correct voltage (120V or 240V) is supplied.
- Connect Heating Cable Wires: Connect the heating cable wires to the LOAD terminals on the thermostat.
- Connect Floor Sensor: Route the floor sensor cable to the thermostat and connect it to the designated sensor terminals. Ensure the sensor is properly placed within the floor heating area.
- Grounding: Connect the ground wire from the electrical box to the thermostat's ground terminal.
- Secure Thermostat: Carefully push the thermostat into the electrical box and secure it with the mounting screws.
Figure 3: Rear view of the Drexma UDG-4999 Thermostat, illustrating the wiring connections for power, load, and sensor.
Initial Power-Up:
Once wiring is complete, turn the power back on at the circuit breaker. The thermostat display should illuminate. Follow the on-screen prompts for initial setup, including language, time, and date settings.
Operating Instructions
The UDG-4999 thermostat features a user-friendly interface with intuitive button controls.
Basic Operation:
- Power Button: Located on the bottom right, press to turn the thermostat ON/OFF.
- Up/Down Buttons: Used to adjust temperature settings, navigate menus, and change values.
- OK Button: Confirms selections and enters menu options.
- Reset Button: A small recessed button (often requiring a pin) to reset the thermostat to factory defaults. Use with caution.
Setting Temperature:
In normal operating mode, use the Up/Down buttons to adjust the desired floor temperature. The display will show both the current floor temperature and the setpoint.
Programming Schedule:
The thermostat allows for programmable heating schedules to optimize energy consumption. Refer to the on-screen menu for detailed programming steps. Typically, you can set different temperatures for various times of the day and days of the week.
Wi-Fi Connectivity:
To connect the thermostat to your Wi-Fi network, access the Wi-Fi settings menu. Follow the instructions to connect to your home network and integrate with compatible smart home systems. This enables remote control and monitoring via a dedicated application (if available from Drexma).
Maintenance
The Drexma UDG-4999 thermostat requires minimal maintenance.
- Cleaning: Wipe the thermostat's surface with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- GFCI Test: Regularly test the built-in GFCI by pressing the "Test" button (if visible, or follow on-screen instructions). The thermostat should trip, indicating the GFCI is functioning. Reset the GFCI after testing.
- Firmware Updates: Check the manufacturer's website or the associated mobile application for any available firmware updates to ensure optimal performance and access to new features.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Thermostat display is blank. | No power supply; tripped circuit breaker; loose wiring. | Check circuit breaker and ensure it is ON. Verify wiring connections are secure. |
| Floor not heating. | Thermostat OFF; setpoint too low; GFCI tripped; heating cable issue. | Ensure thermostat is ON. Increase setpoint. Reset GFCI. Consult an electrician if heating cable is suspected. |
| GFCI trips frequently. | Ground fault in heating system; faulty GFCI. | Consult a qualified electrician to diagnose the ground fault. Replace thermostat if GFCI is faulty. |
| Incorrect temperature reading. | Faulty floor sensor; sensor not properly installed. | Check sensor connection. Replace sensor if faulty. |
| Cannot connect to Wi-Fi. | Incorrect Wi-Fi password; router issues; thermostat too far from router. | Verify Wi-Fi password. Restart router. Move thermostat closer to router or use a Wi-Fi extender. |
Specifications
| Feature | Detail |
|---|---|
| Model Name | UDG-4999 |
| Brand | Drexma |
| Controller Type | Programmable |
| Voltage | 120 Volts, 240 Volts (Dual Voltage) |
| Output Relay | 15 A |
| GFCI Protection | 15 mA Class A EGFPD |
| Connectivity | Wi-Fi |
| Color | White |
| Item Weight | 1 pounds |
| Package Dimensions | 6 x 5 x 4 inches |
| UPC | 659460295992 |
Warranty and Support
For warranty information and technical support, please contact Drexma customer service. Details are typically available on the product packaging or the official Drexma website.
Drexma Official Website: www.drexma.com
Please have your model number (UDG-4999) and purchase date ready when contacting support.
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