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When it calls for fan, the thermostat is going to short the R wire to the fan-control wire. You are proposing a timer which also shorts the R wire to the fan-control wire. Assuming it's all this simple. For the timer, easy enough: use any common lamp timer which allows hourly on/off. Plug a "wall wart" type transformer into that which makes 24VAC. ...


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Keith, You can fish in a new wire under the cement. I have done this quite a few times using a 1/2" stick of PVC pipe connected to a water hose. Dig a small trench next to the cement slightly deeper if larger compacted rock was used some times it it is easier to go below the rock. Connect the PVC to a garden hose and start drilling your hole by pushing into ...


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You would not use the existing good sprinkler wires to bring the 120VAC out to the valve box. The wires are not rated and approved for that type of use. Place the converter transformer indoors to step the 120VAC down to the 24VAC. The "good" wires could then be used to route the 24VAC outdoors. I would not use the sprinkler timer in the valve box. It would ...



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