Thermostat EasyStat™ Non Programmable 120V with GFCI 5mA

Breaker and wire sizes are selected based on the total amperage of the heating system connected to a single thermostat. This information is on the heating product'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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When the ground fault protection mechanism trips, the TEST light is On (red). To reset the ground fault protection, switch the thermostat to Off and back to On. The TEST light will turn off.

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

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If your thermostat is blank, the first thing to do is to test to see if voltage is present at the rear of the thermostat. If no power is reaching the thermostat, please inspect the circuit breaker powering the thermostat in the breaker panel, and verify that the breaker is a non-GFCI type. If it is a GFCI breaker, replace it with a non-GFCI breaker. If there is power entering the thermostat and it is blank, it will need to be replaced.

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Class A for all new orders, Class B if replacing a Class B unit.

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Solution:

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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That is the sound the thermostat makes when the relay is either opened or closed to turn on or off the power to the floor heating elements. See this article for further information.

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Warmly Yours recommends running the floor heating system in F (Floor) mode for most homes. This provides the most efficient operation of the floor heating system and the best protection for the floor covering material that has been installed.

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The manufacturer reversed the wiring pattern between the LOAD side and the LINE side on newly minted controllers, verify that your wiring matches the new wiring schematic stamped on the backplate of the new controller.

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Warmly Yours controllers incorporate built-in Class A GFCI protection for all new floor heating systems.  Class A GFCI provides personnel protection and trips when ground fault current exceeds 5 mA (milliamps).  Class B GFCI protection is pretty much obsolete, but older systems may still require it.  Warmly Yours controllers with built-in Class B GFCI provide equipment and circuit protection and operates when a fault to ground exceeds 15 mA.

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