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Intermatic WH21 Electric Water Heater Timer
by Intermatic
3.9 out of 5 stars (129)
$43.92
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Showing 1-8 of 8 questions
1
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Your question is unclear. But maybe this will help: When the red light is on, the 240volt current is active and may be flowing if the thermosat in the hot water heater is calling for it; when it's not on, it's there is current to the heating element in the water heater. If you have an instant-heat hot water set-up, you wasted your money on this timer -- it's for those who have hot water sitting in a tank and who want to draw current only parts of the day, say when electricity is cheaper (for those with time of day metering) or as a back-up to solar hot water on cloudy days. I've also used this device inside a spa back when I lived in Maryland where, at that time, electricity was lots, lots cheaper at night than during the day and evening hours.
Dec 28, 2013 by Golfcrackerjack
0
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It means that the timer has shut off the power to the water heater
Dec 17, 2014 by mark p
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?????????? black wire to black wire green to green ,,,, white wire to whitewire, ground wire should rear that the way mine was
Jan 6, 2015 by peterpiper
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Not 100% sure, but from my experience this is just a 24 hour timer-not programmable the way you require- I recommend a different one for that function.
Jan 7, 2014 by Kim L. Sperling
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No
Nov 17, 2014 by mark p
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Yes it is
Sep 8, 2013 by bigt518
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Allows you to determine how long the heater is on, saving some electricity when its off.
Aug 14, 2013 by Jim
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If your water heater plugs into an outlet, a regular timer will work fine. Most water heaters, however, are 220 volt lines on a dedicated circuit, thus you need something more like the WH21. Here's a good reference for you: http://michaelbluejay.com/electricity/waterheatertimer.html
May 1, 2010 by R. Basile
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