Cubic Mini Grizzly in Tiny House on Wheels

  • Active since 1995, Hearth.com is THE place on the internet for free information and advice about wood stoves, pellet stoves and other energy saving equipment.

    We strive to provide opinions, articles, discussions and history related to Hearth Products and in a more general sense, energy issues.

    We promote the EFFICIENT, RESPONSIBLE, CLEAN and SAFE use of all fuels, whether renewable or fossil.

kml

Member
Jan 4, 2015
11
Surrey,B.C.,Canada
I am starting this thread anew,because I do not want to jack someone's thread.

I purchased a Grizzly on March 2015 and am just getting around to installing it now in my tiny house on wheels. Single wall flue was ordered with the stove, but now is redundant.(Waste of money) Spent the last month scouring the internet trying to find pieces to install this correctly. It will be 90 inches to the ceiling, Dickensen deck fitting and 1@ 2ft.double wall and cap. Still waiting for double wall flue to arrive from Cubic Mini as I could not find anything else on the market. Looked at offerings from Tiny Wood Stoves but I already had the Dickensen deck fitting and cap. (Wasted too much money on buying useless stuff on initial order with stove) Learned a lot from this forum and Youtube on this subject and will try to piece together everything and not burn my house down. The initial thought is to start 1 single wall to radiate more heat,follow with 3 sections of double wall then the deck fitting and lastly 1 - 2 ft double wall and cap. Don't know if this will work as the parts are not here yet. ( They sell an adapter to mate the dual wall with the deck fitting) I will post again with pictures after my install.
 
I would do it all double-wall. It will still radiate heat, but usually is a superior pipe with a stainless liner. It will also keep the flue gases hotter for a cleaner chimney and it will simplify installation. In Surrey it may not take much to heat the place if it is insulated well. What is the size of the house? How many cu. ft. will the stove be heating?
 
Not sure if you're concerning yourself with code or not but single wall connector pipe is 18"s clearance to combustibles and if you mix double wall and single wall which isn't recommended you are supposed to default to the single wall clearances for the whole run. I would take Begreens advice and stick with double wall the whole way. Get the heat off the appliance, not the pipe.
 
I would do it all double-wall. It will still radiate heat, but usually is a superior pipe with a stainless liner. It will also keep the flue gases hotter for a cleaner chimney and it will simplify installation. In Surrey it may not take much to heat the place if it is insulated well. What is the size of the house? How many cu. ft. will the stove be heating?
The THOW 8.5 ft X 24ft. The stove will be heating 1600 cubic ft. One other variable to cosider is my Envirolet composting toilet It has a 117 cfm fan running 24/7. Insulation is Roxul R28 Ceiling, R14 Walls,R24 floors. Completely wrapped with Blueskin, no air leaks.
 
Not sure if you're concerning yourself with code or not but single wall connector pipe is 18"s clearance to combustibles and if you mix double wall and single wall which isn't recommended you are supposed to default to the single wall clearances for the whole run. I would take Begreens advice and stick with double wall the whole way. Get the heat off the appliance, not the pipe.
Thank you for your input. I am very concerned with code as I believe that THOW will soon be coming under some sort of bylaw. Currently I can only run with what Cubic Mini has to offer as there is nothing else out there in 3 inch stainless double wall. I was looking at the Duravent for pellet stoves but it doesn't come in stainless.
 
The THOW 8.5 ft X 24ft. The stove will be heating 1600 cubic ft. One other variable to cosider is my Envirolet composting toilet It has a 117 cfm fan running 24/7. Insulation is Roxul R28 Ceiling, R14 Walls,R24 floors. Completely wrapped with Blueskin, no air leaks.
It sounds like an easy to heat space. Are you heating with electric right now?
 
Thank you for your input. I am very concerned with code as I believe that THOW will soon be coming under some sort of bylaw. Currently I can only run with what Cubic Mini has to offer as there is nothing else out there in 3 inch stainless double wall. I was looking at the Duravent for pellet stoves but it doesn't come in stainless.
Olympia chimney supply will make it in 3". And doing that you could get a real class a chimney and all of the components to go with it.
 
Olympia chimney supply will make it in 3". And doing that you could get a real class a chimney and all of the components to go with it.

Too Late, Shipment has arrived. I have looked all over the internet and only found Tinywoodstove.com, but they have no stock. Like I told Cubic Mini, their QUALITY CONTROL is nonexistant. Took some pictures with my phone but don't know how to get it on here. What I received was a 3in inside a 3 1/4 in. The inside female up and the outside female down They are held together with a tack/spot weld at 1 end. Whoever was doing the welding must have hiccuped and welded the two together.Had to grind the weld off to seperate the two to assemble.There are just 2 pipes, no insulation at all. 4 lengths @ 2 Ft will leave me 11 inches shy of connecting to the Dickensen Deck fitting. A single wall off the stove would act as a slip connection with a 12 in overlap.
New question : Cubic Mini sells a coupler to mate their double wall to to Dickensen Deck Fitting. Doing this results in the lower double wall being capped off by the deck fitting and the one above the roof starting anew. There would be no continuation between lower (below roof) And upper (above roof.

1) Would the heat generated travelling up betwwen the inside and outside but capped off by the deck fitting cause me more problems? Worried about the heat build up between ceiling joists and under Standing seam roof.

2) If there is no continuation between lower and upper double wall, would that result in a potential above average creosote build up?

Checked Olympia and they do not list anything for 3 in. I wouldn't mind a better way of going through the roof other than the Dickensen ( 3 1/4 inch outside) That wold allow me to use doublewall continuously. More heat above roof to help combat creosote buidup

Thanks for taking the time to read this
 
Cubic Mini Double Wall
 

Attachments

  • Cubic Mini Grizzly in Tiny House on Wheels
    20180116_162600.jpg
    42.5 KB · Views: 366
  • Cubic Mini Grizzly in Tiny House on Wheels
    20180116_162647.jpg
    43.7 KB · Views: 346
  • Cubic Mini Grizzly in Tiny House on Wheels
    20180116_162655.jpg
    44.9 KB · Views: 340
  • Cubic Mini Grizzly in Tiny House on Wheels
    20180116_162714.jpg
    55.3 KB · Views: 301
Too Late, Shipment has arrived. I have looked all over the internet and only found Tinywoodstove.com, but they have no stock. Like I told Cubic Mini, their QUALITY CONTROL is nonexistant. Took some pictures with my phone but don't know how to get it on here. What I received was a 3in inside a 3 1/4 in. The inside female up and the outside female down They are held together with a tack/spot weld at 1 end. Whoever was doing the welding must have hiccuped and welded the two together.Had to grind the weld off to seperate the two to assemble.There are just 2 pipes, no insulation at all. 4 lengths @ 2 Ft will leave me 11 inches shy of connecting to the Dickensen Deck fitting. A single wall off the stove would act as a slip connection with a 12 in overlap.
New question : Cubic Mini sells a coupler to mate their double wall to to Dickensen Deck Fitting. Doing this results in the lower double wall being capped off by the deck fitting and the one above the roof starting anew. There would be no continuation between lower (below roof) And upper (above roof.

1) Would the heat generated travelling up betwwen the inside and outside but capped off by the deck fitting cause me more problems? Worried about the heat build up between ceiling joists and under Standing seam roof.

2) If there is no continuation between lower and upper double wall, would that result in a potential above average creosote build up?

Checked Olympia and they do not list anything for 3 in. I wouldn't mind a better way of going through the roof other than the Dickensen ( 3 1/4 inch outside) That wold allow me to use doublewall continuously. More heat above roof to help combat creosote buidup

Thanks for taking the time to read this
They may not list it but tgey will make it. You couldnt pay me to install that crap in my house. It is junk.
 
Um? Really? That looks spooky. Looks like canvas wall tent cook stove pipe. They cant be serious.
 
Um? Really? That looks spooky. Looks like canvas wall tent cook stove pipe. They cant be serious.
Yes they are there is some really scary stuff being sold in the tiny home market.
 
Yes I'd have to assume that's uncertified, unless it has a sticker on it listing certified clearance reduction it should be treated as uncertified pipe and requires 18" clearance to combustibles same as single wall.

The Dickinson deck pass thru I looked up a picture of. Is it male up? Looks like the crimped male end points up in the photos i could find?

Double wall pipe always terminates at the ceiling support(or thimble) which you are trying to use the deck pass thru for. So if it was proper double wall pipe terminating at a proper ceiling support connection there would be zero concerns about the heat between the inner and outer pipes. It would be all certified components being used as they were tested. From the ceiling support box on up double wall connecting pipe is never used again. From that point it becomes chimney, preferrably double wall chimney pipe, not connecting pipe.

None of the components you are using look to be certified to me? Is the Dickinson deck pass thru certified in anyway? Your concerns over heat build up at the deck pass thru and surrounding combustibles are valid IMO. I don't see how with the components you've listed you will have a code compliant install. If there are certification decals on the components please try to get some pics up of them.
 
Most of the wood stove stuff going into tiny homes is not certified. They use a lot of marine materials because that's the only other place with similar parameters. Some of the companies that have been doing this for a long time are better than some of the newcomers. Dickinson Marine has been around since 1932, making heaters for tugs and fishing boats. They make a shielded stove and components to install. Their stainless flue pipe is single-wall and decent quality. In a marine installation all components need to be shielded from combustibles. I would do the same in a tiny house.
http://dickinsonmarine.com/product/newport-solid-fuel-heater/
 
  • Like
Reactions: Squisher
They may not list it but tgey will make it. You couldnt pay me to install that crap in my house. It is junk.

tgey? or Olympia? I have spent over $500.00 to purchase 5 @ 2 ft double wall, 1 @ 2ft single wall, Dickensen Deck fitting, and cap. I will not pass on this uncertified material by selling it to some unsuspecting person. As an aspiring Tiny House Builder, I am trying to vet and use the best components that works for my business. This will be used for my show house and I will source from Olympia for clients. Any further suggestions or help will be very appreciated. I will post pictures on my installation as I progress.
 
  • Like
Reactions: Squisher
Yes I'd have to assume that's uncertified, unless it has a sticker on it listing certified clearance reduction it should be treated as uncertified pipe and requires 18" clearance to combustibles same as single wall.

The Dickinson deck pass thru I looked up a picture of. Is it male up? Looks like the crimped male end points up in the photos i could find?

Double wall pipe always terminates at the ceiling support(or thimble) which you are trying to use the deck pass thru for. So if it was proper double wall pipe terminating at a proper ceiling support connection there would be zero concerns about the heat between the inner and outer pipes. It would be all certified components being used as they were tested. From the ceiling support box on up double wall connecting pipe is never used again. From that point it becomes chimney, preferrably double wall chimney pipe, not connecting pipe.

None of the components you are using look to be certified to me? Is the Dickinson deck pass thru certified in anyway? Your concerns over heat build up at the deck pass thru and surrounding combustibles are valid IMO. I don't see how with the components you've listed you will have a code compliant install. If there are certification decals on the components please try to get some pics up of them.
Cubic Mini Grizzly in Tiny House on Wheels Cubic Mini Grizzly in Tiny House on Wheels Cubic Mini Grizzly in Tiny House on Wheels Cubic Mini Grizzly in Tiny House on Wheels

This is the Dickensen Deck Fitting, no certification. I have tried to get a quote from Olympia but found that they do not sell to the public so I guess that I am stuck using these components