If your system is labeled 120V-240V or you have thick wiring with wire nuts as shown, your system is mains powered. ZEN can only be used with low voltage systems. If you’re unsure, please contact your home automation provider or HVAC installer.
Mains Powered Systems
If you are able to set different set point temperatures for different areas of your home, you have a multi-zone system. ZEN allows you to specify one set point only.
Multi-Zone Systems
If you have electric heaters running along the baseboard (skirting board) of your rooms, your system is not compatible with ZEN.
Baseboard Systems
Check the boxes below that correspond with the labels on the wire terminals of your old thermostat. You can disregard any links. Do not identify your wires based on color.
TIP: Take a photo of your existing wiring in case you need additional HVAC support.