oil fired furnace X-10 off/on swich control
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Posted by Ron on April 18, 2008, 1:40 pm
Please log in for more thread options hot water to heat the house and for domestic hot water. During the warm months we turn off the oil furnace when we do not need hot water to save energy. There is a low-voltage off/on toggle switch next to the oil furnace. This turns off/on the furnace control. This works great except when you want to take a shower when you wake up in the morning. Is there a way to use an X-10 device to turn off/on the furnace instead of walking out into the garage? thanks, Ron | |||||||||||||||||||
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Posted by Gordon Burditt on April 18, 2008, 3:59 pm
Please log in for more thread options Isn't there an X-10 device that operates low-voltage relay contacts? I'd put the manual switch and the X-10 device in series, so OFF on the manual switch means OFF, so you don't surprise anyone doing maintenance. Another possibility is to find the power supply/transformer powering the low-voltage circuit, and cut off the power there with a 110VAC X-10 device. My (gas) furnace has a 110VAC switch controlling a low voltage (12 or 24V, I think, it's been a while since I had to replace the transformer) transformer which powers the thermostat. I don't know whether oil heat is set up this way, but *something* needs to power the circuit, and my guess is it's not batteries. (Beware that smart thermostats may need power to keep the program memory functioning, although this IS often done with batteries.) | |||||||||||||||||||
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Posted by BruceR on April 18, 2008, 4:46 pm
Please log in for more thread options Place one of these in series with the existing switch.
http://www.x10.com/automation/um506_s.html Ron wrote: > I live in the Northeast and have an oil fired furnace which provides
> hot water to heat the house and for domestic hot water. > > During the warm months we turn off the oil furnace when we do not need > hot water to save energy. > > There is a low-voltage off/on toggle switch next to the oil furnace. > This turns off/on the furnace control. This works great except when > you want to take a shower when you wake up in the morning. > > Is there a way to use an X-10 device to turn off/on the furnace > instead of walking out into the garage? > > thanks, > > Ron | |||||||||||||||||||
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Posted by Lewis Gardner on April 19, 2008, 3:32 am
Please log in for more thread options BruceR wrote:
> Place one of these in series with the existing switch.
Parallel would work better... | |||||||||||||||||||
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Posted by BruceR on April 19, 2008, 4:26 am
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Lewis Gardner wrote: > BruceR wrote:
>> Place one of these in series with the existing switch.
>
> Parallel would work better... Yes, parallel would work - but no better and, for safety reasons I think I'd stick with series which would require both switches to be on to operate. That way, as mentioned in another responder's post, turning off the original switch for service would positively shut down the furnace so that service personal could work safely. If wired parallel, the main switch could be off but if the UM-506 turned on while the service tech was performing service, the tech could be seriously burned or injured by the blower fan. I know I wouldn't want to count on others in my family - or even myself - to remember the schedule and override it when being serviced. I'd hate to see my service guy hauled away in an ambulance with severe burns or other injuries because of a poor wiring choice. Also, while I'm no expert on HVAC codes, I suspect that the parallel wiring might not meet code for the safety reasons described above. | |||||||||||||||||||
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>hot water to heat the house and for domestic hot water.
>
>During the warm months we turn off the oil furnace when we do not need
>hot water to save energy.
>
>There is a low-voltage off/on toggle switch next to the oil furnace.
>This turns off/on the furnace control. This works great except when
>you want to take a shower when you wake up in the morning.
>
>Is there a way to use an X-10 device to turn off/on the furnace
>instead of walking out into the garage?