Heat redistribution/timer [RE-wrenches]
Gary Higbee, Solutions from the Land
ghigbee at efn.org
Wed Feb 21 13:07:34 PST 2001
Hi Wrenches,
I'm working with a client who would like to be able to run his 1/3hp
240-volt circulating fan. While I know that these things use a lot of power
he is also grid-tied, and wants to be able to redistribute heat from his
woodstove (in a high-ceiling room)into other rooms in the house. I'll likely
drop in a T-240 for this. What I'd like to be able to do, though, is have a
timer that would make the fan run for something like 5-10 minutes each hour.
So what I'd like is a timer (preferably battery-operated, 12-volt would be
OK, guess I could use a gel-cell?) that controls a relay (on the T-240
primary), which we can program for so many minutes per hour. I used to have
a sprinkler timer with a "new lawn" cycle and pump start switch, which I
think ran every hour. I can't seem to find such a thing now. Anyone have any
suggestion for a timer that will control frequent periodic events? I know I
could dust off the electronics and come up with a circuit, but I'd vastly
prefer an off-the-shelf solution.
Thanks!
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Gary Higbee (ghigbee at efn.org)
(541)607-1818
Solutions from the Land--solar,
wind, and hydro site analysis, design,
and installation assistance
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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