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Lunch Specials

Lunch Saturday Steak Special at Fireman's Club for $5.75 [Remind Me]

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 Post subject: How are you suppose to adjust air exchange systems?
PostPosted: February 19th, 2013, 9:25 am 
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Joined: March 23rd, 2007, 6:35 pm
Posts: 802
In the last two places I owned I had an air exchanger, the typical Venmar unit (I know a lot of places have them). It has a control unit that has a dial that says summer and then various stages of negative degrees. I was never told nor ever really understood how these work/how they are suppose to be adjusted.

I always assumed that you set the dial to approx. what the outside air temperature is, is this correct? My place seems really dry this winter and I've been wondering if it is related to the air exchanger being set improperly.

I was also once told by someone that you should turn the dial until you hear it click then dial it back a notch, but when I do that it ends up around the summer setting even in the winter months.


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 Post subject: Re: How are you suppose to adjust air exchange systems?
PostPosted: February 19th, 2013, 10:34 am 
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Joined: April 12th, 2010, 7:29 am
Posts: 2203
The main problem that the Heat Recovery Ventilation systems, such as the Venmar, were designed to correct is excess humidity.

Cold winter air can hold less moisture than warm air can, so, if your house is too dry, turn it off completely on cold dry days, and back on to ventilate the house on the warmer days.

If the house is consistently 'too' dry, you could install a humidifier. Short term solution is to keep a pot or kettle of water boiling on the stove. :)

Ed

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 Post subject: Re: How are you suppose to adjust air exchange systems?
PostPosted: February 19th, 2013, 4:13 pm 
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True Islander

Joined: January 12th, 2008, 5:09 pm
Posts: 5476
jfall wrote:
In the last two places I owned I had an air exchanger, the typical Venmar unit (I know a lot of places have them). It has a control unit that has a dial that says summer and then various stages of negative degrees. I was never told nor ever really understood how these work/how they are suppose to be adjusted.

I always assumed that you set the dial to approx. what the outside air temperature is, is this correct? My place seems really dry this winter and I've been wondering if it is related to the air exchanger being set improperly.

I was also once told by someone that you should turn the dial until you hear it click then dial it back a notch, but when I do that it ends up around the summer setting even in the winter months.

I think you need a more advanced control unit with humidity and mode controls for different time of the year.


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 Post subject: Re: How are you suppose to adjust air exchange systems?
PostPosted: February 19th, 2013, 5:48 pm 
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Almost an Islander

Joined: May 27th, 2011, 10:10 am
Posts: 409
Location: Charlottetown, PE
We use a very simple system to regulate ours in winter - if condensation begins to form on the windows we turn it on for a few hours. Otherwise we leave it turned off. Not very scientific but it keeps the house from being overly dry in the winter.


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 Post subject: Re: How are you suppose to adjust air exchange systems?
PostPosted: February 19th, 2013, 7:45 pm 
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Joined: September 6th, 2007, 9:19 pm
Posts: 1343
Location: Charlottetown P.E.I.
You can turn it completely off at the control on the wall. Any time you shower or whatever you just push the button in the bathroom and it'll come on for approx. 15 minutes that should be enough in the winter. At least that is what i do with mine.

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 Post subject: Re: How are you suppose to adjust air exchange systems?
PostPosted: February 20th, 2013, 5:12 am 
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Joined: September 22nd, 2005, 1:43 pm
Posts: 6510
Location: Charlottetown
Our air exchanger control is air humidity. It's set at 50%.

Also, it's always running at a reduced cycle until the condition is met where the humidity reaches the dial setting, then it kicks into full duty.

I don't use it often. It seems to return very cold air


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 Post subject: Re: How are you suppose to adjust air exchange systems?
PostPosted: February 20th, 2013, 2:37 pm 
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Joined: January 12th, 2008, 5:09 pm
Posts: 5476
socktan wrote:
Our air exchanger control is air humidity. It's set at 50%.

Also, it's always running at a reduced cycle until the condition is met where the humidity reaches the dial setting, then it kicks into full duty.

I don't use it often. It seems to return very cold air


I usually keep mine in off mode during the Summer and the winter in anything below -5-10 degrees (the heating coil will probably freeze up).


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