Need cut off timer for 240v heater
For some relatives who are real likely to forget to turn off their electric wall heater, I need a timer to cut it off after, say 30 minutes. It’s a surface mount 200 watt, 240 v Stievel Eltron CK20E.
http://www.iap-home.com/index.cfm?fuseaction=product.display&Product_ID=4213
I could use a spring wound mechanical one, but they don’t want to listen to a loud tick-tock (like at a cheap hotel with the infrared light). Also the 240v is a problem. I’m no electrician, just need to know if it’s feasible before they hire one. Don’t want something “rigged” that’ll make a bad situation worse.
Nothing I see programmable gives you the shut-off capability for this. Seems like with all the older folks around you could find something in the marketplace.
Any ideas?
Replies
I think finding a quiet 2 pole timer that handles that load and mounts a wall box is going to be impossible to find
I'm not saying it can't be done, just that the average HO should stay away from building what is required
.
.
. . . . . . . .
I would have an electrician do the work. I just need to know enough to determine whether or not what the electrician suggests is a wise setup. Or if they should even bother to start down that road.No, I know to keep my hands off anything much beyond flipping a light switch. But I'd like to learn a little so I can talk intelligently--sorta--about it.
well then I would suggest a remotely mounted definite purpose contactor. or a solid state relay, which is very quiet compared to the DP relay
and a wall timer of your choice to turn it on / off of course that only controls the supply voltage so the factory thermostat would still be needed.
.
.. . . . . . . .
Edited 3/16/2008 1:02 pm by maddog3
Uh, 2000 watts is what I meant to type.A solid state relay that's 240v compatible exists?
actually the SSRs will handle that voltage on a single pole. so you will only be breaking one leg of the feed. something I suspect the factory stat is doing as well...the SSRs are zero sequencing so there is NO high inrush or surge when they are turned onyou could most likely use two of them, it's just that they would not be turned on at the exact same moment. a definite purpose contactor would not have that problem,
it just makes a thumping sound when it gets pulled in
.
.
.. . . . . . . .
Why is this a problem ?
It has a built in thermostat.
If it isn't in a vacation cabin or other situation where you'd want it completely turned off when you aren't there, what's the point in turning it off, otherwise ?
Life doesn't often leave a very easy trail to follow.