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Using the Control4 thermostat in a 4 wire system


LSDave

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Has anyone tried one of these with the control4 thermostat?? This could potentially save a bunch of cash in a remodel where its difficult to run an extra wire.

Hopefully someone has some experience with this before i buy and try it.

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it makes sense, the diode you at at the thermostat is a half rectifier, and the shared line either sends a pulsed positive, pulsed negative or alternating current. From that the device can tell if either or both wires are triggered and probably latch output relays accordingly.

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A standard 4-wire is R(h/c) W Y and G

As most furnaces automatically engage the Fan (G) anyway, you could simply re-wire that to C to power the T-Stat. Just make sure the furnace kicks in the fan itself or modify it as required.

You do of course lose the ability to manually control the fan (but with AC in the house, this shouldn't be a problem).

If it's multi-stage you're probably out of luck.

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Place thermostat at furnace and use a remote sensor on two of the wires.

This would be fine if the customer had another dedicated interface like a touch screen...... but they do not. I guess they could use their remote, but its not as easy as what they are used to.

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