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Hi Jeff, hope you are having a nice day

On 04-Jul-04 At About 16:35:42, Jeff wrote to All
Subject: Installing humidistat on Intertherm Central A/C unit

J From: (Jeff)

J Hello:

J I have an Intertherm 4ton A/C unit which has the capability of
J multiple fan speeds. I wanted to install a humidistat onto the unit
J and it seems to be a no-brainer, but I don't want to screw anything
J up. I opened the panel cover of the A/C unit blower and found that
J there are two terminals that are currently shorted together marked
J "HUM". I assume that this is for a humidistat unit. Is there any
J special way that they need to be connected, or are we just simply
J talking about an on/off connection? Any advice would be
J appreciated. Thanks in advance,

Did you install a humidifier? what is the purpose in installing this
humidistat? ( what are you trying to achieve?)


-= HvacTech2 =-


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It makes the A/C unit function as a whole-house dehumidifier.
Makes a big difference when there is less than adequate insulation,
and that sucker just keeps running trying to catch up with the heat.
During the night, the humidity can get down to being drier than in
the Sahara Desert, and people wake up with dry throat, dry eyes, etc.
The humidistat cuts that out.
After all, you can have a comfortable 83 degrees, or a very muggy
75 degrees. The humidity is the primary factor, in spite of thermostats
controlling most A/C units.

Can you tell that I've installed one on my unit?

HvacTech2 wrote in message
...

Did you install a humidifier? what is the purpose in installing this
humidistat? ( what are you trying to achieve?)

I realy dont know if it will work for you, you say it gets Too dry, but
runs all night to cool? well set the temp higher. You wont cool the
way you want it or add moisture.

Normaly the problem is reversed to much humidity in summer, Then you
need a VS DC [ Did you Hear that Daves Heating ] with low low
speed.

A real slow speed removes more moisture , faster speed less, raise the
speed, but its probably on high, get Plants or a Humidifer.

Hi Michael, hope you are having a nice day

On 05-Jul-04 At About 02:26:19, Michael Baugh wrote to All
Subject: Installing humidistat on Intertherm Central A/C unit

MB From: "Michael Baugh"

MB It makes the A/C unit function as a whole-house dehumidifier. Makes
MB a big difference when there is less than adequate insulation,
MB and that sucker just keeps running trying to catch up with the heat.
MB During the night, the humidity can get down to being drier than in
MB the Sahara Desert, and people wake up with dry throat, dry eyes,
MB etc. The humidistat cuts that out. After all, you can have a
MB comfortable 83 degrees, or a very muggy 75 degrees. The humidity
MB is the primary factor, in spite of thermostats controlling
MB most A/C units.


MB Can you tell that I've installed one on my unit?

Nope. what you are trying to do takes a lot more than a "dehumidistat"
a humidistat is for humidifiing only, or if you have the proper equipment it
can slow the fan down to dehumidify the air more during cooling.
Those HUM terminals are for a humidifier

-= HvacTech2 =-


... "After they make styrofoam, what do they ship it in?" - s.w.

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HvacTech2 wrote:

a humidistat is for humidifiing only...

Herbach and Rademan (800) 848-8001 http://www.herbach.com sell a nice
$4.95 Navy surplus humidistat, their item number TM89HVC5203, with a
20-80% range, a 3-6% differential, and a 7.5A 125V switch that can be
wired to open _or close_ on humidity rise...

if you have the proper equipment it can slow the fan down to dehumidify
the air more during cooling.

Sounds like a job for a dirty filter.

Nick

Hi , hope you are having a nice day

On 05-Jul-04 At About 04:51:58, wrote to All
Subject: Installing humidistat on Intertherm Central A/C unit

n From:

n HvacTech2 wrote:

n a humidistat is for humidifiing only...

n Herbach and Rademan (800) 848-8001 http://www.herbach.com sell a nice
n $4.95 Navy surplus humidistat, their item number TM89HVC5203, with
n a 20-80% range, a 3-6% differential, and a 7.5A 125V switch that
n can be wired to open _or close_ on humidity rise...

yes and the PROPER terminology for this is HUMIDITY control. not humidistat.

n if you have the proper equipment it can slow the fan down to
n dehumidify the air more during cooling.

n Sounds like a job for a dirty filter.

you are Truly an idiot.




-= HvacTech2 =-


... "Imagine if birds were tickled by feathers..." - s.w.

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I took a garden-variety Aprilaire humidity sensing unit
(call it what you want, I'll call it a humidistat), rewired it to
'make' on humidity rise, wired it in series to my setback
thermostat. Welcome to read my comments from 2 or 3 years
ago if you know how to do a proper Google search.
I believe I also mentioned that my utility bill went down, too.

HvacTech2 wrote in message
...


Hi Michael, hope you are having a nice day

On 05-Jul-04 At About 02:26:19, Michael Baugh wrote to All
Subject: Installing humidistat on Intertherm Central A/C unit

MB From: "Michael Baugh"

MB It makes the A/C unit function as a whole-house dehumidifier. Makes
MB a big difference when there is less than adequate insulation,
MB and that sucker just keeps running trying to catch up with the heat.
MB During the night, the humidity can get down to being drier than in
MB the Sahara Desert, and people wake up with dry throat, dry eyes,
MB etc. The humidistat cuts that out. After all, you can have a
MB comfortable 83 degrees, or a very muggy 75 degrees. The humidity
MB is the primary factor, in spite of thermostats controlling
MB most A/C units.


MB Can you tell that I've installed one on my unit?

Nope. what you are trying to do takes a lot more than a "dehumidistat"
a humidistat is for humidifiing only, or if you have the proper equipment
it
can slow the fan down to dehumidify the air more during cooling.
Those HUM terminals are for a humidifier

-= HvacTech2 =-


.. "After they make styrofoam, what do they ship it in?" - s.w.

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Hi Michael, hope you are having a nice day

On 05-Jul-04 At About 12:42:51, Michael Baugh wrote to All
Subject: Installing humidistat on Intertherm Central A/C unit

MB From: "Michael Baugh"

MB I took a garden-variety Aprilaire humidity sensing unit (call it what
MB you want, I'll call it a humidistat), rewired it to 'make' on
MB humidity rise, wired it in series to my setback thermostat. Welcome
MB to read my comments from 2 or 3 years ago if you know how to do a
MB proper Google search. I believe I also mentioned that my utility
MB bill went down, too.

If you wired it in series it would keep the cooling off until humidity rises.
not dehumidify.

-= HvacTech2 =-


... "Aw mom, you act like I'm not even wearing a bunji cord!"

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Think about what you just wrote.

It is controlling an A/C, keeping it off till the humidity rises.
Exactly as you said.
Then the A/C comes on, serves as a whole-house dehumidifier.
Which is its function. If you can't see the value of that, I suggest
you go to HVAC school.

HvacTech2 wrote in message
...
If you wired it in series it would keep the cooling off until humidity
rises.
not dehumidify.

-= HvacTech2 =-

HvacTech2 wrote:

MB I took a garden-variety Aprilaire humidity sensing unit (call it what
MB you want, I'll call it a humidistat), rewired it to 'make' on
MB humidity rise, wired it in series to my setback thermostat. Welcome
MB to read my comments from 2 or 3 years ago if you know how to do a
MB proper Google search. I believe I also mentioned that my utility
MB bill went down, too.

If you wired it in series it would keep the cooling off until humidity rises.
not dehumidify.

Sounds like a job for a dirty filter.

Nick