Outdoor Wood Furnace Info

All-Purpose OWF Discussions => Plumbing => Topic started by: Scratch on November 19, 2011, 04:47:27 PM

Title: heating a hot tub?
Post by: Scratch on November 19, 2011, 04:47:27 PM

Anybody heating their hot tub with their OWB?  Wondering what type of heat exchagers are out there.

Title: Re: heating a hot tub?
Post by: RSI on November 19, 2011, 08:43:01 PM

You need to use a stainless steel shell in tube heat exchanger. (about $250)
The chemicals in the water will eat copper. I have heard of some people using flat plate heat exchangers but I would not because they will clog much easier and they are brazed together. (chemicals will not get along with the brazing)

Title: Re: heating a hot tub?
Post by: dirtryder on November 21, 2011, 07:14:29 AM

http://outdoorwoodfurnaceinfo.com/forum/index.php?topic=177.msg2580#msg2580 (http://outdoorwoodfurnaceinfo.com/forum/index.php?topic=177.msg2580#msg2580)

Title: Re: heating a hot tub?
Post by: muffin on November 22, 2011, 06:47:19 AM

I use one of these to heat my pool.  Works great.  You will need a 3-way valve too.  I assume you can tap into its thermostat to control the valve.

Title: Re: heating a hot tub?
Post by: koutsman on November 22, 2011, 07:40:19 AM

Scratch,     You have P.M.