Petit Godin 3726 - Flue Question

 
stumpp64
New Member
Posts: 2
Joined: Sun. Jan. 13, 2013 12:39 pm

Post by stumpp64 » Sun. Jan. 13, 2013 12:43 pm

I have recently acquired a Petit Godin 3726 (small oval). The manufacturer's tag on the back states that the stove is rated as "au charbon" (for coal). It is in nice shape, but after I got it home I noticed that the exhaust box is sized for a 4" flue.
Now, I love the appearance of the stove. But burning coal is a bit of a problem for me. I was planning on obtaining a 4"-5" adapter, running 5" flue about 7' up to the ceiling, and then going to 6" for the last 8'-10'.
Will this work for wood, or will it just turn into a smoking dragon?
Any suggestions?


 
User avatar
KaptJaq
Member
Posts: 105
Joined: Thu. Feb. 17, 2011 12:42 pm
Location: Long Island, NY, USA
Hand Fed Coal Stove: Godin 3721 Le Grand Rond
Coal Size/Type: Anthracite Nut

Post by KaptJaq » Sun. Jan. 13, 2013 9:31 pm

I have a 110 cm ( about 4.3 inch) outlet on my large round Godin. At the stove outlet I step up to a 5" flue. It is about 6 feet to the thimble where it enters a clay lined 22 foot long 8x12 flue. I usually burn coal but when I need a quick hot fire just to get the chill out of the house I burn wood. As long as your stove is still reasonable air-tight you can control the burn and not have smoke problems. The "air wick" behind the front firebrick lining introduces enough air to help control the smoke. Your 15' to 17' of 5" & 6" round should give enough draft for it to burn well if there are no other problems. The Godin is not the best wood stove, frequent reloads and minimal ash capacity, but it does burn cleanly.

KaptJaq

 
Chiefcamper
Member
Posts: 148
Joined: Fri. Mar. 11, 2011 12:41 pm
Location: Wayne County, Pa.
Other Heating: Mitsubishi Split System Hyper Heat Pump, Jotul GF600DV FreeStanding Propane Fireplace

Post by Chiefcamper » Sun. Jan. 20, 2013 1:11 pm

I have the large oval, it has the 5" outlet. I have a 5 to 6 adaptor, use 6" pipe for about 2 feet up, then into an 8" thimble about 3.5ft horizontal, into a 20 ft 7x7 clay chimney. I think my stove is sealed pretty well, but if I try the newspaper trick, the paper just burns up and the smoke finds its way out of every crevice it can LOL.

It sounds like it should work although every setup is different of course. I find that with wood I have no problem at all getting enough draft. Some people have used hairdryers to get the draft going, I started using a propane torch to light and and start a consistent draft for wood, and avoid the smoke. I'm sure others have as well. Hope that's not considered cheating :)

You may want to consider a Manual Damper, especially for wood.

Another thing would be, when you set out to light a wood fire, get it right the first time with kindling, etc, as you really don't want to be opening your top door much at least for an hour or two. Once you have the stove warmed up, a decent ember bed on the grate, and the wood (1st or 2nd load) into a good burn, the draft could allow you to leave the top fill door open a little longer when refueling.

Average Time between fills is 2-3 hours.

You will find with wood, that you're getting a lot of heat off of the pipe, unlike using coal in this stove. If it's heating up too much, I sometimes put less logs in there and keep drafting it the same. Also using the manual damper.

Hope It works out!!!!!!!!!!!!!!

Joe

 
jpilgrim
New Member
Posts: 1
Joined: Fri. Oct. 14, 2016 4:44 pm
Hand Fed Coal Stove: Petit Godin

Post by jpilgrim » Fri. Oct. 14, 2016 6:55 pm

Hello:
Help! I have a Petit Godin and am having a hard time getting the proper stovepipe for it. The opening at the back of the stove is, as someone else mentioned here, about 11 cm or just over 4 inches. Does anyone know where to purchase an adapter to attach to that opening and fit at the other end to either 5" or 6" stovepipe elbow? I have a 6" diameter opening into the chimney at the top so will have to go to 6" at that point.
I have only been able to find a 5" to 6'" adapter. Also, the flue opening on the stove is designed with small tabs of metal protruding into its center, so I presume an adapter will have to fit around the exterior perimeter. Might there be a way to use a 5" wide adapter and modify it somehow to fit?
The other issue is I don't have a lot of clearance to the wall, so not much room for a large adapter, plus elbow. I had the stove hooked up adequately for years, with some kind of adapter, but old piping was removed and now I haven't been able to solve this problem and use the stove for about four years! I'm so hoping someone here can give me some direction. Thank you.

 
User avatar
coaledsweat
Site Moderator
Posts: 13775
Joined: Fri. Oct. 27, 2006 2:05 pm
Location: Guilford, Connecticut
Stoker Coal Boiler: Axeman Anderson 260M
Coal Size/Type: Pea

Post by coaledsweat » Fri. Oct. 14, 2016 7:15 pm

Normally, you try and keep the stove's breach size right through the thimble. I recommend going to your local HVAC supply house and explain your needs. They will provide you with a high grade commercial product at reasonable cost.

 
User avatar
joeq
Member
Posts: 5767
Joined: Sat. Feb. 11, 2012 11:53 am
Location: Northern CT
Hand Fed Coal Stove: G111, Southard Robertson

Post by joeq » Fri. Oct. 14, 2016 11:04 pm

If your local supply house comes back a negative, and you can't find any contacts in France, you could probably fabricate one yourself by popping the rivets out of a piece of 6" stove pipe, wrapping it to the correct diameter, re-riveting it, then taking a 6" thimble cap, cutting a hole to fit your newly formed pipe, then connecting it to a conventional USA made chimney pipe. But that's just me talking outloud, and something like a last ditch effort.
(By the way, I'ld love to see a picture of your stove.) :)
Last edited by joeq on Sat. Oct. 15, 2016 10:30 am, edited 1 time in total.

 
User avatar
coaledsweat
Site Moderator
Posts: 13775
Joined: Fri. Oct. 27, 2006 2:05 pm
Location: Guilford, Connecticut
Stoker Coal Boiler: Axeman Anderson 260M
Coal Size/Type: Pea

Post by coaledsweat » Sat. Oct. 15, 2016 9:26 am

If you can't get 4" from a supply house they must be closed. Most pellet stoves use 4".


 
CathyinSpain
New Member
Posts: 11
Joined: Tue. Nov. 28, 2023 5:45 pm

Post by CathyinSpain » Wed. Nov. 29, 2023 11:57 pm

Help! I wish that I had found this forum before I installed my Petit Godin. As it is a local handyman installed a 100 cm flue and assured me it was fine. It goes directly out of the wall (I have a feeling it should originate in the room for a meter) and then bends 90 degrees (which I think is too sharp) and continues up the outside of the building to extend about a half meter above the roof (about 6 meters in total). It has a cowl on the top that spins in the wind. It had been stood for years unused since I moved from France. It suffered oxidation and although I've cleaned it up with rust remover and a wire brush, It needs filling in places on the outside steel where the rust has attacked it. There's also a couple of cracks. I've ordered some specialist filler for metal stoves and planned to spray paint it with high temperature paint afterwards. I lit it once after the pipe was fitted and it burned well for a while with no smoking in the room but it went out after the initial flames died down. There's little draw. I used seasoned olive wood. I think it might be better with anthracite. But I have another air related problem that I'm struggling to resolve. The air valve on the door is stuck. This might be why it's not burning. I have tried WD 40 penetrating oil but it doesn't budge. I don't know what to do next. I've been spraying it daily for a couple of weeks. It's been suggested that I take off the door, lay it horizontally then soak it in WD 40. However the door doesn't lift off its pins. Reading the manual that's kindly been posted on here It seems it might not be meant to lift off as I think the manual is saying if it needs to come off, for example to change the glass, it might need the pins replacing afterwards. I am out of my depth here. I've invested hours of work so far and all my spare cash on buying the flue and having it fitted, and buying paint and specialist fillers etc. Now I think that the pipe may be too narrow and a big part of the reason why the fire isn't drawing and staying in. Together with the air valve being stuck, despite being on my second can of WD 40, I'm rapidly losing confidence. The stove is in my craft/workshop not in my house so I'm not relying on it for every day heat. But even though I live in Spain it's going to be too cold to work in there without heat as winter approaches. I had this stove in France several years ago where it was fitted by a professional with a 150cm flue. It worked well. Do you think I can get away with the narrow pipe if I resolve the air valve problem? Or is the project doomed? Please help if you can. Any ideas what to do about the air valve?

 
waytomany?s
Member
Posts: 4587
Joined: Fri. Aug. 16, 2019 3:02 pm
Location: Oneida, N.Y.
Hand Fed Coal Stove: Harmon Mark II
Hand Fed Coal Furnace: Looking
Baseburners & Antiques: Looking
Coal Size/Type: Nut
Other Heating: newmac wood/coal combo furnace

Post by waytomany?s » Thu. Nov. 30, 2023 7:24 am

Pictures? Is the exhaust pipe narrower that the stove outlet?

 
stumpp64
New Member
Posts: 2
Joined: Sun. Jan. 13, 2013 12:39 pm

Post by stumpp64 » Thu. Nov. 30, 2023 9:15 am

You might consider the 150 cm flue

 
CathyinSpain
New Member
Posts: 11
Joined: Tue. Nov. 28, 2023 5:45 pm

Post by CathyinSpain » Thu. Nov. 30, 2023 9:36 am

IMG_20231118_142843.jpg
.JPG | 450.8KB | IMG_20231118_142843.jpg
waytomany?s wrote:
Thu. Nov. 30, 2023 7:24 am
Pictures? Is the exhaust pipe narrower that the stove outlet?

 
CathyinSpain
New Member
Posts: 11
Joined: Tue. Nov. 28, 2023 5:45 pm

Post by CathyinSpain » Thu. Nov. 30, 2023 9:38 am

No the outlet pipe is 100 cm as is the flue but according to the manual posted on this forum it must be at least 125cm and ideally 150cm

 
waytomany?s
Member
Posts: 4587
Joined: Fri. Aug. 16, 2019 3:02 pm
Location: Oneida, N.Y.
Hand Fed Coal Stove: Harmon Mark II
Hand Fed Coal Furnace: Looking
Baseburners & Antiques: Looking
Coal Size/Type: Nut
Other Heating: newmac wood/coal combo furnace

Post by waytomany?s » Thu. Nov. 30, 2023 11:52 am

Typically you run the same size pipe as the stove outlet, but if the manual says otherwise, there's probably a reason. Which part is the one froze up? The knob?

 
CathyinSpain
New Member
Posts: 11
Joined: Tue. Nov. 28, 2023 5:45 pm

Post by CathyinSpain » Thu. Nov. 30, 2023 2:49 pm

IMG_20231124_133502.jpg
.JPG | 322.2KB | IMG_20231124_133502.jpg
Yes it's the circular air valve on the door. It's apparently very sensitive (so says the manual). A half turn gives a little air and so on. It's completely jammed, I assume it's rusted but I have been unable to free it with WD 40.
IMG_20231124_151920.jpg
.JPG | 314.6KB | IMG_20231124_151920.jpg

 
CathyinSpain
New Member
Posts: 11
Joined: Tue. Nov. 28, 2023 5:45 pm

Post by CathyinSpain » Thu. Nov. 30, 2023 2:50 pm

The second photo is the back of the air valve


Post Reply

Return to “Imported Hand Fired Coal Stoves Using Anthracite”