ReplyCarnak, I have a very silly question. How do you turn off the dehumidistat in the summer? The dehumidistat mounted on the main floor does not have a on/off switch. Is there another one hidden around HRV?
Professional Member
You use the dehumidistat in the winter only do not use it in the summer.
Set it as high as your windows will allow in the winter. In NW Ontario I would tell people to try 35% once it got below freezing, if their windows stayed clear to bump it up. If the windows were sweating lower the setting until it stopped.
The better the window, the warmer the surface temperature of the inside glass and the FRAMES. The warmer the surfaces the higher the RH you can maintain without sweating.
The colder it gets outside, the colder the inside of the windows will be.
That dehumidistat should over ride the HRV to high speed even if you have the fan speed set to zero, but it sounds like either the dehumidistat is built into the wall control or someone has to wire an independent dehumidistat to the unit to do this. Call a liebreathe dealer
If the windows are good, then maybe you can keep 40% without a problem
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Regular Guest
Carnak, I have a very silly question. How do you turn off the dehumidistat in the summer? The dehumidistat mounted on the main floor does not have a on/off switch. Is there another one hidden around HRV?
Regular Guest
The dehumidistat should have an on/off switch, atleast the ones I have seen. Sorry if that is not a help, curious what Carnak says. I know the HRV shuts off the dehumidistat when it is no longer needed but most have a seperate on/off switch.Originally Posted by Kris Moon
Professional Member
set it to 80% RH or disable the function on the controller
Last edited by Carnak; 09-11-2009 at 12:29 PM.
The way we build has a greater impact on our comfort, energy consumption and IAQ than any HVAC system we install.
http://www.ductstrap.com/
Professional Member
The HRV dries out your house. Now you are putting in something to fight off the HRV and humidify the house.
I am suggesting that you stop overdrying your house. And to sound like a scratched record, when it gets cold out and assuming your new humidifier can over power the drying effect of the HRV, that your windows will start dripping profusely if you maintain 50% RH in cold weather.
40% RH is more realisic, its not going to crack your skin or a piano, and it will not ruin your window sills and cause mold
the horse has been to the watering hole several times now, still seems like it is not thirsty.
The way we build has a greater impact on our comfort, energy consumption and IAQ than any HVAC system we install.
http://www.ductstrap.com/
Regular Guest
Green indicated light on Aprilaire 600A humidifier
I have an Aprilaire 600A. Is the "humidifier on" indicator light supposed to be lighted up all the time (green/yellow/red)? Is the water flow through or drain off only when the furnace kicks in? My "humidifier on" indicator is not light up and there is no water drain off. I wonder why.
Professional Member*
It's not working - have someone look at it - could solve all your problems.
"Hey Lama, hey, how about a little something, you know, for the effort." And he says, "there won't be any money, but when you die, on your deathbed, you will receive total consciousness." So I got that goin' for me, which is nice. - Carl Spackler
Regular Guest
Is the green light supposed to be on at all time? This unit was installed last week. I just don't know what are considered normal or not.
God Speed, Jim. We'll miss you - 2-26-23
If its powered off the blower. It will only be on when the blower is on.
Regular Guest
beenthere, that means that there is nothing wrong with the humidifier. Is that meant that no water drain off if the blower/furnace is not on?
God Speed, Jim. We'll miss you - 2-26-23
If it only runs when the blower/heat is on. That will be the only time that water drains.
Regular Guest
Thank you, guys. There were so many articles saying that the flow-through system wasted lots of water. That's why I always thought that the water would flow through all the time.
God Speed, Jim. We'll miss you - 2-26-23
No problem.
Regular Guest
I observed the humidifier for at least an hour. I noticed that even the furnace kicked in, the dehumidifier ramped the reading from 30 to 38%, the "humidifier on" indicator was still not light up and I did not see water coming out from the unit. I will call the installer to come back tomorrow for the 2nd time.
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