Outdoor Wood Furnace Info

All-Purpose OWF Discussions => General Outdoor Furnace Discussion => Topic started by: Jack72 on March 15, 2012, 08:15:17 PM

Title: Down Draft Furnace
Post by: Jack72 on March 15, 2012, 08:15:17 PM: Does anyone have a force air down draft furnace?

Well I do My question is my A coil for my air conditoner is above my Owb coil so when the summer rolls around like it felt today. My dealer told me that if I dont drain the water in my OWB coil it will freeze and split (in the Ductwork). Is that true or is that a bunch of sillyness he is telling me. He said he had to replace one that was leaking and he said it was from his A/C freezing it????????? I didnt think it got that cold. Thanks for the replys Jack
Title: Re: Down Draft Furnace
Post by: boilerman on March 15, 2012, 08:28:43 PM: How many inches or how much distance do you have between your heat exchanger and AC coil?
Title: Re: Down Draft Furnace
Post by: Scott7m on March 15, 2012, 09:03:11 PM: Yes it is possible, but not as long as your ac is runnin properly. If the ac freezes up it can freeze the coil too, but it's highly unlikely.
Title: Re: Down Draft Furnace
Post by: Jack72 on March 17, 2012, 08:03:09 PM: Quote from: boilerman on March 15, 2012, 08:28:43 PM
How many inches or how much distance do you have between your heat exchanger and AC coil?

Boilerman

I would say about 12 inches
Title: Re: Down Draft Furnace
Post by: Scott7m on March 17, 2012, 08:47:48 PM: Quote from: Jack72 on March 17, 2012, 08:03:09 PM
Quote from: boilerman on March 15, 2012, 08:28:43 PM
How many inches or how much distance do you have between your heat exchanger and AC coil?

Boilerman

I would say about 12 inches

Don't worry about it, ain't gonna happen that far away
Title: Re: Down Draft Furnace
Post by: boilerman on March 17, 2012, 09:30:05 PM: I would agree with Scott, with a 12 inch gap you should be ok.
Title: Re: Down Draft Furnace
Post by: yoderheating on March 18, 2012, 07:53:57 PM: The easiest thing to do to be sure in a case like this is to put a simple cut off switch on the incoming AC line. I've used them before, the simply snap on the line. I think the one I used cut off the AC compressor whenever it got below 34 and back on when it raised to 38. It cost about $30 and took 10 min to install and then there is no way that you will ever freeze your coil.
Title: Re: Down Draft Furnace
Post by: RSI on March 18, 2012, 10:03:03 PM: Do you happen to have a part number or brand for them? It would be worth putting one on every system just to be safe if it is cheap enough.

It is unlikely that they will ever freeze but if the freon develops a leak it is possible.
Title: Re: Down Draft Furnace
Post by: swede on March 19, 2012, 03:58:46 AM: I'd like to know more about the cut off switch also.
Title: Re: Down Draft Furnace
Post by: yoderheating on March 19, 2012, 06:29:08 AM: I don't remember the name and I don't keep them in stock so I can just go out and look at it. They always carry it at my local heating and air supply house so I doubt it would be a problem to find.