Outdoor Wood Furnace Info

All-Purpose OWF Discussions => General Outdoor Furnace Discussion => Topic started by: walkerdogman85 on November 08, 2012, 07:09:56 PM

Title: add chimney height + or -?
Post by: walkerdogman85 on November 08, 2012, 07:09:56 PM
I have a hardy and I am thinking about adding some height to my stack. Will it effect my burn time I am burning straight pine and only load it every 24 hours even longer the weather has been in the high 20s at night. I would just like to get the smoke a little higher but I do t want to have bracing. I also want to add a rain cap to keep water out. Please tell me the good bad and what you guys do and mabye post some pictures. Thank you
Title: Re: add chimney height + or -?
Post by: jerkash on November 09, 2012, 03:27:45 AM
I have a Legend.  It had a three foot pipe and I added another three foot pipe.  I did not see any difference in burn time and no extra bracing.
Title: Re: add chimney height + or -?
Post by: walkerdogman85 on November 09, 2012, 05:49:56 AM
Ok I think the hardy dealer said something about adding up to five 3runs foot sections without bracing but I don't think I need to go that high
Title: Re: add chimney height + or -?
Post by: AirForcePOL on November 09, 2012, 07:19:15 AM
Ok I think the hardy dealer said something about adding up to five 3runs foot sections without bracing but I don't think I need to go that high

It doesn't seem like that would even be able to stand up straight without any bracing if you ask me. 

I have thought about adding one 3 ft section to my Hardy.  Are you just supposed to shove the new section down into the existing one?  I always wondered if it is recommended to put a clamp on there to hold it tight.
Title: Re: add chimney height + or -?
Post by: walkerdogman85 on November 09, 2012, 01:09:38 PM
The way he talked you just slide the two together but he wants 50 dollars a piece for 3 foot section of single wall
Title: Re: add chimney height + or -?
Post by: AirForcePOL on November 09, 2012, 01:22:23 PM
The way he talked you just slide the two together but he wants 50 dollars a piece for 3 foot section of single wall

that sounds about right from the Hardy dealer.  I think I paid $45.  I can't find it any cheaper anywhere else. 
Title: Re: add chimney height + or -?
Post by: Jack72 on November 09, 2012, 07:08:13 PM
The way he talked you just slide the two together but he wants 50 dollars a piece for 3 foot section of single wall

that sounds about right from the Hardy dealer.  I think I paid $45.  I can't find it any cheaper anywhere else.

I know you dont have a CB but Menards has double wall stainless 3 foot sections for 36.00    thats what I used on mine not sure if that would work for Hardy???   Mine is a lot taller now 24 feet (Had a neighbor complain unfornately)    Now I need a lightning rod on it and a airplane light           
 its only 8 foot in my profile pic           Jack
Title: Re: add chimney height + or -?
Post by: bigdaddyjak on November 09, 2012, 07:49:16 PM
If it's outside, u don't need anything but cheap stove pipe, heck u can get 8"x5' pieces for around $8-$10 a section. I just use that aluminum tape the use on duct work for holding it together and sealing  it. But that's just me.
Title: Re: add chimney height + or -?
Post by: MattyNH on November 10, 2012, 06:35:22 AM
If it's outside, u don't need anything but cheap stove pipe, heck u can get 8"x5' pieces for around $8-$10 a section. I just use that aluminum tape the use on duct work for holding it together and sealing  it. But that's just me.
The problem with that is rots..Been there done that..Better off spending the money for the good pipe..
Title: Re: add chimney height + or -?
Post by: bigdaddyjak on November 10, 2012, 08:31:56 AM
I have to agree matty,
 only lasted me about 6 yrs on my aquatherm, but 3 sections making it an extra 6' and a $20 bill was not a big deal to me
Title: Re: add chimney height + or -?
Post by: dumbodog00 on November 10, 2012, 06:24:57 PM
I have a Hardy H2 and had three sections of pipe screwed together for a while.  Eventually with the movement from the wind, the screws would not stay tight and it came down. 
I have had as many as six together.  I used the thin angle iron type stuff with holes that is commonly used to hold up the garage door opener.  I ran it down both sides of the pipe and held that together with stainless radiator style clamps (but larger).  That worked pretty well until some super stong winds caused it to be damaged.  I should have used some type of "outriggers" but never did.
Now I have three sections clamped together and that is working well at this point.
Title: Re: add chimney height + or -?
Post by: walkerdogman85 on November 11, 2012, 03:37:26 AM
What made you take the six down and leave three up? Did or does ot affect burn times.
Title: Re: add chimney height + or -?
Post by: dumbodog00 on November 12, 2012, 01:51:22 PM
High winds mangled it some and I never put up anything to stabilize it, before or after.  I also didn't like the way it looked all that well.  I have a two story house and it did a good job at getting the smoke up and away.  Three vs. six was an easy compromise that looks okay and stands fine on its own.
Performance/burn times were not changed as far as I could tell.  I just hit it once in a while to knock the creosote down.
Title: Re: add chimney height + or -?
Post by: walkerdogman85 on November 12, 2012, 04:07:43 PM
Ok I might add one or to hopefully it it help but I really have to get a rain cap
Title: Re: add chimney height + or -?
Post by: dumbodog00 on November 14, 2012, 09:28:03 AM
The weak point is really that first section of pipe.  The way the H2 is designed, all the weight from above sits on one small area on the first, thin wall of pipe.  I wish it were designed differently so pipe could be added easier as with some of the other models on the market.
Title: Re: add chimney height + or -?
Post by: Red_Nek on November 15, 2012, 12:47:35 PM
I've had some success using an healthy wrap of metallic duct tape on the joints. It doesn't last forever but it does make it through a season.