Warming Systems 40mat120-20-OJ

Warming Systems 40 Sqft 120V Electric Tile Radiant Floor Heating Mat with UDG4-4999 Thermostat Instruction Manual

Model: 40mat120-20-OJ

1. Important Safety Information

This section contains critical safety warnings. Please read carefully before installation or operation.

  • Electrical Components: This product contains electrical components. Always follow proper electrical safety guidelines when installing, operating, and maintaining.
  • Qualified Installation: Do not install if you are not qualified. Installation should be performed by a licensed electrician or qualified professional.
  • Moisture Warning: Keep away from water and other liquids. Do not use if damaged.
  • GFCI Protection: Always use a GFCI (Ground Fault Circuit Interrupter) protected outlet.
  • Child and Pet Safety: Keep out of reach of children and pets.
  • Manufacturer Instructions: Always follow manufacturer's instructions for safe operation and installation.

2. Package Contents

Verify that all components are present before beginning installation.

  • Electric Floor Warming Mat (40 sq ft, 20" Wide x 24' Long)
  • Touch Screen GFCI Protected Digital Programmable Thermostat (UDG4-4999)
  • Floor Temperature Sensor
  • Installation Warning Monitor (sounds alarm if wire is damaged)
Warming Systems 40 sq ft Electric Tile Radiant Floor Heating Mat with Thermostat and accessories

Image: The complete package contents, including the rolled heating mat, digital thermostat, floor sensor, and installation monitor.

3. Setup and Installation

Proper installation is crucial for the safe and efficient operation of your radiant floor heating system. It is recommended that installation be performed by a qualified professional.

3.1 Planning and Measurement

Careful planning ensures optimal heat coverage and avoids installation issues.

  • Voltage Selection: Mats are available in 120V and 240V. Ensure you have the correct voltage mat for your electrical supply. This model is 120V.
  • Clearance from Walls and Fixtures: Maintain at least 2 inches from walls and permanent fixtures.
  • Toilet Wax Ring: Maintain at least 6 inches from the center of the toilet wax ring.
  • HVAC Vents/Heating Appliances: Maintain at least 3 inches from HVAC vents or other heating appliances.
  • Fixed Objects: Do not install the heating mat under fixed objects such as cabinets, bathtubs, or toilets (except for the specified clearance around the wax ring).
Diagram showing proper placement of heating mat in a bathroom, avoiding fixed objects and maintaining clearances.

Image: An illustration demonstrating the correct layout of the heating mat in a bathroom, highlighting areas to avoid and required clearances from walls, fixtures, and the toilet wax ring.

3.2 Mat Placement

  • The electric radiant floor heating mat is designed to be flipped and turned to fit various shaped areas.
  • The mat features double-sided tape on both sides to adhere securely to the sub-floor, ensuring it lays flat during installation.
  • The white fiberglass mesh can be cut to rotate and flip the mat to cover the desired area. Do not cut the red heating wire.
  • If necessary, the heating wire can be removed from the mesh and laid loose on the floor using hot glue, particularly in tight or irregular spaces.
Close-up of heating mat showing double-sided tape being peeled off for adhesion to the sub-floor.

Image: A close-up view of the heating mat, illustrating the double-sided tape that helps secure the mat to the sub-floor for a flat and stable installation.

3.3 Embedding the System

  • The heating system must be fully covered with mortar or self-leveling compound. This protects the heating elements and ensures even heat distribution.

3.4 Electrical Connection

  • The thermostat requires a 120V electrical connection and is rated for 16 Amps.
  • Connect the heating mat's cold lead to the thermostat. The mat includes a 10-foot cold lead for easy connection.
  • Install the floor temperature sensor in the floor, equidistant between two heating wires, ensuring it is fully embedded in the mortar/compound.
  • Utilize the included Installation Warning Monitor during the entire installation process. This device will sound an alarm if the heating wire is damaged, allowing for immediate detection and repair before the floor is fully installed.
  • All electrical connections must comply with local electrical codes and be performed by a licensed electrician.

4. Operation

The UDG4-4999 Touch Screen GFCI Protected Digital Programmable Thermostat provides precise control over your floor heating system.

4.1 Thermostat Overview

Diagram of the UDG4-4999 Touch Screen Thermostat with labels for each function.

Image: A detailed diagram of the UDG4-4999 thermostat's touch screen interface, indicating the location and function of the GFCI test button, menu, temperature adjustment, schedule adjustment, and on/off/reset button.

  • GFCI Test Button: Located on the thermostat, used to test the Ground Fault Circuit Interrupter.
  • Day and Time: Displays the current day and time.
  • Current Temperature: Shows the actual floor temperature detected by the sensor.
  • Heating Indicator: Icon indicating when the heating system is active.
  • Target Temperature: The desired floor temperature setting.
  • Menu: Accesses thermostat settings and programming options.
  • Adjust Temperature: Up and down arrows to manually change the target temperature.
  • Adjust Schedule: Button to modify the programmable heating schedule.
  • On/Off/GFCI Reset Button: Located on the side of the thermostat, controls power and resets the GFCI.

4.2 Setting the Temperature

  1. Press the "Adjust Temperature" up or down arrows on the touch screen to set your desired floor temperature.
  2. The thermostat will automatically maintain this temperature according to its programming.

4.3 Programming the Schedule

  1. Press the "Adjust Schedule" button or navigate to the menu to access scheduling options.
  2. Follow the on-screen prompts to set different temperature levels for various times of the day and week, optimizing comfort and energy savings.

4.4 GFCI Operation

  • The integrated GFCI protects against electrical shock.
  • Testing: Regularly press the GFCI Test Button to ensure it is functioning correctly. The thermostat should trip, cutting power to the heating mat.
  • Resetting: If the GFCI trips, press the On/Off/GFCI Reset Button on the side of the thermostat to restore power. If it trips repeatedly, consult a qualified electrician.

5. Maintenance

The Warming Systems Electric Tile Radiant Floor Heating Mat is designed for minimal maintenance.

  • Cleaning: The thermostat can be cleaned with a soft, damp cloth. Do not use abrasive cleaners or solvents.
  • Regular GFCI Testing: Test the GFCI monthly to ensure proper operation.
  • System Inspection: Periodically inspect the thermostat and visible wiring for any signs of damage. If damage is found, disconnect power and contact a qualified electrician.
  • No user-serviceable parts are inside the heating mat or thermostat beyond basic cleaning and GFCI testing.

6. Troubleshooting

This section addresses common issues you might encounter.

ProblemPossible CauseSolution
Floor is not heating.
  • Thermostat is off.
  • GFCI has tripped.
  • Incorrect temperature setting.
  • Power supply issue.
  • Damaged heating wire (unlikely if installation monitor was used).
  • Ensure thermostat is powered on.
  • Press the GFCI reset button on the side of the thermostat.
  • Verify the target temperature is set above the current floor temperature.
  • Check circuit breaker.
  • If GFCI trips repeatedly or no power, consult a qualified electrician.
Floor is not as warm as expected.
  • Thermostat setting too low.
  • Insufficient insulation under the subfloor.
  • Large heat loss in the room.
  • Increase the target temperature on the thermostat.
  • Ensure the room is properly insulated.
  • Allow more time for the system to reach the desired temperature, especially during initial startup or in very cold conditions.
Thermostat touch screen unresponsive.
  • Temporary software glitch.
  • Power interruption.
  • Hardware malfunction.
  • Try cycling power to the thermostat (turn off at breaker, wait 30 seconds, turn back on).
  • If issue persists, contact Warming Systems customer support or a qualified electrician.

7. Product Specifications

FeatureDetail
Model Number40mat120-20-OJ
BrandWarming Systems
Mat Size40 sq ft (20" Wide x 24' Long)
Voltage120 Volts (AC)
Wattage480 Watts
Amperage4 Amps
Watts per Square Foot12 Watts/Sqft
Mat ThicknessLess than 1/8 inch
Thermostat ModelUDG4-4999 (Touch Screen, GFCI Protected, Programmable)
Thermostat Amperage Rating16 Amps
Safety CertificationsUL Listed for USA and Canada, safe for wet areas.
Included ComponentsDigital Thermostat, Electric Floor Heating Mat, Floor Temperature Sensor, Installation Monitor.
OriginMade in the USA (Spring Grove, IL)

8. Warranty and Support

Warming Systems stands behind the quality of its products.

  • Warranty: This product is covered by a 25-year warranty. Please refer to the official Warming Systems warranty documentation for full terms and conditions.
  • Technical Support: Warming Systems offers engineering support for any questions regarding installation or operation.
  • Contact Information: For support, please visit the Warming Systems Store on Amazon or refer to the contact details provided in your product packaging.

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