Want a portable dehumidifier to work with heater fan

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Graven Water - 01 Jul 2008 22:11 GMT

I want to run a portable dehumidifier with an external dehumidistat
(switch that goes on when the humidity is above a certain level).
And I'd like the furnace fan to go on when the dehumidifier does, to
circulate the air in my house so it'll dehumidify my whole house.
The dehumidifier has to have a manual control to do this, because
the ones with electronic controls forget their settings when power goes
off, or they have a capacitor so they remember the setting a short time.
Am I right that this would be a simple thing to do? Can anyone describe
to me how it could be done? I'd get an electrician to set it up, but I'd
like to get an idea of how it would work.
There are various dehumidistats around. Honeywell makes one that is
wall-mounted and directly connected to the house wiring, also one that
is an interrupt switch and plugs into a wall outlet.
thanks
Laura

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Graven Water - 02 Jul 2008 00:02 GMT

I wrote:

> I want to run a portable dehumidifier with an external dehumidistat
> (switch that goes on when the humidity is above a certain level).
> And I'd like the furnace fan to go on when the dehumidifier does, to
> circulate the air in my house so it'll dehumidify my whole house.
> The dehumidifier has to have a manual control to do this

I mean a mechanical control. My tongue got tangled, or my virtual tongue,
my fingers.

Laura

> the ones with electronic controls forget their settings when power goes
> off, or they have a capacitor so they remember the setting a short time.
[quoted text clipped - 4 lines]
> wall-mounted and directly connected to the house wiring, also one that
> ?is an interrupt switch and plugs into a wall outlet.

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Graven Water - 02 Jul 2008 01:18 GMT

Hi, I don't mean to put the dehumidistat outside my house, but rather on a
wall inside the house. "external" meaning external to the dehumidifier's
control. You put the dehumidifier on continuous dehumidify, or on a very
low humidity setting, and give it power through a dehumidistat switch.

Laura

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Graven Water - 04 Jul 2008 18:40 GMT

I probably got an answer to this ... Somebody told me what you to is
connect the R and G terminals to turn on the fan. So the dehumidistat
switch would connect the R and G terminals as well as turning on the
dehumidifier. Also they told me that if there's central AC, there would
have to be a relay to avoid feeding power to the AC. I don't have AC now but I
might get it.

Comments?

Laura

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Homeowner Forum / Home Automation / July 2008

Want a portable dehumidifier to work with heater fan