[Sparky-30]

We are new here and not familiar with how to turn on a gas furnace for heat with the dehumidstat under the control, (dont understand what its for) we put it in the off position? or humistat in on? doesnt feel like we are getting any heat.

[BogeyBoy]

Set the humidistat to 0 degrees - On.
Set you thermostat to the desired temperature.
Should work.

[JUREK]

Make sure the thermostat is selected for heat.

[Sparky-30]

Thanks, finally figured it out, I put the humidistat on around 30 and the heat kicked in, never had one of those before in my former homes.

[iaudit]

Originally Posted by BogeyBoy

Set the humidistat to 0 degrees - On.
Set you thermostat to the desired temperature.
Should work.

Originally Posted by Sparky-30

Thanks, finally figured it out, I put the humidistat on around 30 and the heat kicked in, never had one of those before in my former homes.

I don't mean to be picky, but it really is a DEhumidistat not a humidistat. It works with the air conditioner to remove humidity from the environment, hence the use of the prefix DE. A humidistat would be used to ADD humidity to the environment.

[BogeyBoy]

Originally Posted by iaudit

I don't mean to be picky, but it really is a DEhumidistat not a humidistat. It works with the air conditioner to remove humidity from the environment, hence the use of the prefix DE. A humidistat would be used to ADD humidity to the environment.

The controller that runs the equipment is generally referred to as the humidistat. The paperwork I received with ours from TV when we purchased our home also refers to it as the humidistat setting. Humidistats can control humidifiers or dehumidifiers.

[iaudit]

Originally Posted by BogeyBoy

The controller that runs the equipment is generally referred to as the humidistat. The paperwork I received with ours from TV when we purchased our home also refers to it as the humidistat setting. Humidistats can control humidifiers or dehumidifiers.

I disagree, please see the attached link which describes the uses of a humidistat and dehumidistat. Humidistats are not used to control dehumidifiers.

http://www.home-air-care.com/hstat.htm

[handieman]

Originally Posted by Ajack

Thank-you for saying this. Saved my typing finger wear n' tear.

DE Humidistats and Humidistats are very closely related. The DE model has a normally open switch which opens the power to the thermostat and closes when it reaches a preset humidity level. The Humidistat has a normally closed switch which opens and shuts off power to a dehumidifier when the humdity level reaches a desired level. Dehumidistats work in conjunction with your thermostat, which when AC is running, will dehumidify the ambient air. Humidistats control a standalone humidifier or a "built in the furnace" model. A humidistat in Florida is worthless unless someone has health problems
Now your really confused HUH?
Handie

[BogeyBoy]

Originally Posted by handieman

DE Humidistats and Humidistats are very closely related. The DE model has a normally open switch which opens the power to the thermostat and closes when it reaches a preset humidity level. The Humidistat has a normally closed switch which opens and shuts off power to a dehumidifier when the humdity level reaches a desired level. Dehumidistats work in conjunction with your thermostat, which when AC is running, will dehumidify the ambient air. Humidistats control a standalone humidifier or a "built in the furnace" model. A humidistat in Florida is worthless unless someone has health problems
Now your really confused HUH?
Handie

Found this definition (and more just like it) on a heating and AC site:
Humidistat
A controller that measures and controls relative humidity. A humidistat may be used to control either humidifying or dehumidifying equipment by the regulation of electric or pneumatic switches, valves, or dampers.

You install the humidistat differently for it to control a humidifier or dehumidifier.

Here is the description for the humidistat in one of my houses:
From the Tradeline Products from Honeywell, the H46E-1013 Honeywell Humidistat provides automatic control for a humidifier or a dehumidifier for the best dehumidification in air conditioning systems.

[EdV]

There seems to be no right or wrong answer to this subject. However, I think of it this way.

The thermostat on your wall is a device that measures the amount of heat (thermos) in the air and turns heating or cooling devices on or off as necessary. But we don’t differentiate that functionality by calling it either a thermostat or a dethermostat.

A humidistat is a device that measures the amount of moisture (humidity) in the air and turns humidifiers or dehumidifiers on or off as necessary. So, why is it necessary to have two different names? I prefer to call them humidistats.

[laryb]

Originally Posted by EdVinMass

There seems to be no right or wrong answer to this subject. However, I think of it this way.

The thermostat on your wall is a device that measures the amount of heat (thermos) in the air and turns heating or cooling devices on or off as necessary. But we don’t differentiate that functionality by calling it either a thermostat or a dethermostat.

A humidistat is a device that measures the amount of moisture (humidity) in the air and turns humidifiers or dehumidifiers on or off as necessary. So, why is it necessary to have two different names? I prefer to call them humidistats.

Ed, My wife prefers to call it "the thing on the wall that controls humidity when we're not there". Works for me.

[Russ_Boston]

Originally Posted by BogeyBoy

Found this definition (and more just like it) on a heating and AC site:
Humidistat
A controller that measures and controls relative humidity. A humidistat may be used to control either humidifying or dehumidifying equipment by the regulation of electric or pneumatic switches, valves, or dampers.

Yes, that is why the suffix is 'stat'. The prefixes determine what it is monitoring. 'Thermo' for heat and 'Humid' for humidity. They are simple measuring devices and switches that turn their attached equipment on or off.

I would assume that most homes in TV do not have a separate dehumidifier. When the humidistat turns on it simple turns on the AC unit which will dehumidify the air while it also cools it. The humidistat is simply another measuring device to turn on your AC via the humidity level instead of the temp level.

A thermostat can turn on/off a heater or an cooling system. A humidistat does the same with the cooling system.

Isn't this correct?

[Sparky-30]

I am now looking at the card from Munns which was stuck above the thermostat, it says:
"When leaving for an exended period and home will be unoccupied, do the following, set thermostat to 78 and place in Cool mode, fan to auto.
THEN TURN THE DEHUMIDISTAT TO 60,

I presume this is when the air is on., but it says DEHUMIDISTAT


So now I am really confused, is Munns wrong or what

[Russ_Boston]

Does it really matter what it is called?

As long as we know what it does. And in this case, let's just call it the 'device', turns on the AC unit when the humidity reaches a certain level.

Call it whatever you please I think we know what everyone is talking about.

[BogeyBoy]

Do you call the device in your garage a garage door opener or a garage door closer?

Do you call the pedal in your car an accelerator or a deaccelerator? (Okay, it's usually called the gas pedal, even on electric carts.)

Do you still "dial" the telephone?

Do you drink pop or soda?

Russ is absolutely right, does it really matter?