Wiring

Can I Have Another Thermostat as an Acting Relay?


When you have multiple floor heating systems being powered that require more than 15amps, you can use an additional 3iE as a relay as opposed to purchasing a separate generic relay which Warmup can supply.

How do I wire my Relay-25?


This Relay-25 fits in a standard single gang box. It is used in conjunction with the 4iEĀ® Smart thermostat series as well as the Tempo thermostat, in order to expand the original 15 amp capacity. It is specifically designed for large applications beyond 800 sqft.

Why does my heater have a ground wire but the thermostat has no terminal for ground?


The ground wire of the heater(s) must be directly connected to the ground wire of the supply.