Relay with built-in transformer 240V+Floor Sensor

The breaker and wire sizes are selected based on the total amperage of the WarmlyYours heating system connected to a single thermostat. This information is on the WarmlyYours heating system's installation plan, electrical plan, or UL label. Based on guidelines from the National Electrical Code: loads up to 16 Amps may utilize 12 gauge wire with a 20-Amp breaker, and loads up to 12 Amps - 14 gauge wire with a 15-Amp breaker. Local code and/or other factors may change these guidelines.

In theory, it is possible, if no other options are available. We do not recommend it, but If the thermostat is controlling the floor temperature with a floor sensor, then it can go on an exterior wall. It is important that the floor sensor gets located in an area of the floor not hit by sunshine.

If the thermostat will be controlling the air temperature with the built-in ambient sensor, then it should go on an interior wall.

A GFCI/GFEP (Ground Fault Circuit Interrupter / Ground Fault Equipment Protection) works differently than a circuit breaker by specifically detecting a small imbalance in electrical current between the hot and neutral wires, which indicates a potential ground fault (like a person touching a live wire), and instantly shutting off the power to prevent shock, while a circuit breaker only trips when there's a significant overload in current flow on the circuit, like a short circuit or too many appliances plugged in.

Relays can fail due to excessive current or voltage. When a relay is exposed to too much current, the contacts can burn out. High voltage can also damage the coil. Other reasons include mechanical wear and tear, dust or dirt buildup, and moisture. These factors can cause the relay to malfunction or stop working entirely. Regular maintenance and using the relay within its specified limits can help prevent failures.

No, a circuit breaker will NOT protect against a power surge; a circuit breakers primary function is to protect against excessive current flow (overload), while a surge protector is specifically designed to handle voltage spikes, which are what power surges are considered to be.

Most low voltage HVAC thermostats are OK to use with tile floors. If you are heating wood, vinyl, carpet, or any other flooring products that have a "maximum temperature" limit, then low voltage HVAC thermostats are not recommended UNLESS they have an input for a floor sensor. Check with the low voltage HVAC thermostat manufacturer about floor sensor inputs first, before buying a third-party integration kit for these types of flooring products.

All thermostats are mandated at 42" height for handicap accessibility, most private residences are mounted at 52-60".

Please see this video on how to install a WarmlyYours nSpiration Series thermostat.

If multiple Integration Kits are needed, we suggest using 240V Integration Kits and 240V heating elements. See our support area for the appropriate diagram. 

WarmlyYours suggests contacting the manufacturer of the home automation system to determine compatibility or how it recommends operating an electric floor heating system.

If the smart thermostat cannot process a floor sensor reading, it is not compatible and the integration kit will not resolve this.

22 Amps.

5 mA GFCI breakers, sized by a local electrician in compliance with local electrical codes.

The ground wire in the floor mat must be connected directly to the ground wire of the supply or to the house ground wire.

That depends on which thermostat you buy, how big a space that will be heated, and the voltage available and voltage of the heating elements.

GFCI can fail for various reasons, such as wear and tear, moisture, corrosion, power surges, faulty wiring, or improper installation. Some of these causes can be prevented by regular inspection and maintenance, while others may require professional assistance. It is important to note that GFCI devices (ex. thermostat, breakers, outlets) should be tested regularly as these do wear out over time.