INSTALLATION SHOULD BE CARRIED OUT BY AN ELECTRICIAN AND MUST COMPLY WITH LOCAL ELECTRICAL CODES.
1. Turn off power to the heating system at the main power panel in order to avoid any risk of electrical shock. 2. Connect the power base wires - L1 & L2 coming from back of thermostat, black to black and red to neutral. 3. For 120V systems connect the black load wire from the back of the thermostat to the black wire (hot) coming from the heating system and the red wire coming from the thermostat to the yellow wire (neutral) from the heating system. For 240V systems connect the black load wire from the back of the thermostat to the black wire (hot) coming from the heating system and the red wire coming from the back of the thermostat to the red wire (hot) coming from the heating system using solderless connectors for copper wires. 4. Insert the floor sensor cable through one of the two openings on the base and connect the sensor wires to terminals 1 and 2 (no polarity). Position the sensor cable such that it does not come in contact with the floor heating wires. The sensor probe must be centered between two floor heating wires for best temperature control. 5. If you wish to install a relay, insert the wires through one of the two openings on the base and connect them to terminals 2 and 3. 6. Push the excess length of high voltage wires back inside the electrical box. 7. Secure the power base to the electrical box using the provided screws. 8. Verify the settings of the configuration switches on the back of the control module. 9. Install the control module on the base. 10. Apply power to the heating system. Verify the installation by making sure that the heating system can be turned on and turned off by increasing and decreasing the set point. 11. Test the ground fault protection. When pressing the button, if it lights up, it is working properly. If it is not, there may be an installation issue.
1.2 Installing the Floor Sensor Probe
'Insert the floor sensor cable through one of the two openings on the wall plate and connect the sensor wires to terminals 1 and 2.' • The sensor cable must pass outside the electrical box and follow the wall down to the floor. • Ensure that the thermostat is straight before tightening completely. • Position the sensor cable such that it does not come in contact with the floor heating wires. The sensor must be centered between two floor heating wires for best temperature control. • Do not staple the sensor head (the plastic end) to the floor. Doing so may damage the sensor. Any damage might not be noticeable during testing but can become apparent several days later.
1.3 Mounting the Thermostat
1. Insert the tabs at the top of the control module in the slots at the top of the top of the power base.2. Secure the control module using the captive screw underneath the base.
1.4 Installing a Relay
NOTE: Each relay will need its own dedicated 20 amp circuit. Insert the wires through one of the two openings in the wall plate and connect them to terminals 2 and 3 (no polarity).
1.5 Wiring Diagram
1.6 Error Messages
LO: The measured temperature is below the display range and heating is activated HI: The measured temperature is above the display range and heating is deactivated. ER: There is a disconnection between the thermostat and the heating element. Be sure that you have a licensed electrician check to make sure that the thermostat is properly connected to the heating element. Also check to make sure that the sensor probe is properly attached and has not short-circuited. Blank Screen: If you have confirmed that power is going to the thermostat (this would also involve checking your electrical panel to verify that the circuit has not tripped) and the screen of your thermostat is still blank, you will need to replace it by contacting your reseller. There is no manual reset button available that would effect any change. Note: If, after troubleshooting based on the error messages, your system is still not working properly, your next step is to have a licensed electrician take your resistance readings with a digital multi-meter. Be sure that when those readings are taken, your heating element model number is available (you can gather this information from your box or reseller if you do not have the box) in order to make sure that the readings taken are on target. The electrician must know to take three readings: line to line and both ground readings. Once you have the results and the readings written down, along with the heating element model number, call Warmup so a representative can assist in diagnosing the issue.
1.7 Advanced Installation and Programming
For more detailed information regarding the installation and programming of your thermostat CLICK HERE.
1.8 Miscellaneous Questions
How many heating systems can be connected to one thermostat? This is dependent upon the amperage of the units that you are trying to install. Each thermostat can carry a load of 15 amps. Once this limit is reached, a relay must be installed (and multiple relays after that, dependent upon the amperage of the units). Please note that while the relay needs to be accessible, it does not need to be in plain sight. You may hide it in a cabinet to avoid having two thermostats visually available in the room. With that being said, if you are not interested in having a master and a relay and would prefer to have just one thermostat installed, you may also have your electrician install a relay, which will carry a larger amperage load. How long does the thermostat keep my settings once the power has been shut off? Your programmed settings will remain indefinitely unless you change them. However, if the power to your thermostat has been cut for more than 5 hours, you will need to reset the clock. Can I use the TH-115 with other floor heating systems? Possibly, however, you should check with the manufacturer of the electric floor heating system you are considering and provide them with the thermostat specifications outlined in our installation manual. Warmup is not responsible for any damage that may occur if you choose to use the thermostat with a different floor heating system. Is an electric floor heating thermostat the same as a regular thermostat? No. Floor heating thermostats are specifically designed to control electric floor heating systems. Does the TH115 Have GFI Built In? Yes, the TH-115 has GFI built in.
2 Technical Questions
2.1 What gauge wire do I use to connect the electrical panel to the thermostat?
Typically 12/2 or 14/2 gauge wire is used if a 120V floor heating system will be powered. For 240V floor heating systems 14/3 gauge wire is utilized.
2.2 What do I do if I damage the sensor wire?
'You have two options depending on the situation. If you have not yet covered the wire with thinset and tile, you would simply contact your retailer and order a new sensor wire and install it. On the other hand, let's say you have damage done to the end of the sensor wire (perhaps the tip was broken off) but you do not want to pull up all of the tile to make your repair. In this instance you can order a new sensor wire and splice (using CAT 5 wire) the new portion to what remains after removing the damaged end. After splicing, immediately check the resistance using a digital multimeter set to 20ohms and verify that the reading is between 7 and 15.'