Relay with built-in transformer 240V

This support page provides publications, manuals, specifications, support articles, and common support questions

Common Support Questions (10)

Publications and Manuals (10)

Specifications (13)

Articles (3)

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Common Support Questions

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.

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

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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:

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

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

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

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

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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.

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Publications and Manuals



Connection Double Pole, three wire
Connection Method Hardwired
Maximum Load (Resistive Only) 22 amps
Transformer Ratings 24 VAC / 1.2 VA / Class 2
Voltage 240 V


Control Signal 24VAC / 40mA / 1.2VA


Country of Origin (COO) China


Ground Fault Protection (GFCI) No
UPC (GTIN-12) 881308047535

Product Dimensions

Length 0.1″
Width 0.1″

Warranty / Certifications

Warranty 3 years


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