Petit Godin Oval Question

Very popular in the 70's and 80's there is many brands of smaller hand fired coal stoves from many European countries. These can also date back to the turn of the last century. Imported stoves would include such brands as Franco Belge, Saey and Efel among many others.
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Cap
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Post Sun. Aug. 31, 2008 9:31 pm

Hello Gentlemen,

I have two images attached below. One image belongs to djackman. It's his Godin stove. The 2nd image is a stove I pick up to use in my smaller family room where I have a 2nd flue currently not being used.

My question. What does the unit on the rear of the barrel do? I believe the part catalog refers to it as an *air regulator valve*. I don't have this part and I wonder how necessary it is? I've seen a few images on the web of Godin's without it. Do they brake, get lost or was it an option?
Attachments
IMG_0015.JPG
No air regulator valve. Pipe outlet is 4.25" o.d. How does it get hooked to stove pipe?
godin_back.jpg
Djackman's Godin with air regulator valve? Is it necessary?
Cap
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Northampton Co., PA

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Post Sun. Aug. 31, 2008 10:01 pm

Best I can tell from the manual I have is that the smaller stoves have upper and lower ports in the refractory chamber connected externally. The Manual shows a picture of mine (small model 3730, with the connector on the back) but notes "The Model 3731 has a single flue outlet at the top of the firebox"

Not sure if your larger Godin has the upper/lower ports in the refractory, never seen a large Godin. I can tell you that on mine the lower port was prone to clogging and would affect the burn. Got good at poking it clear with a 3/16" rod thru the cleanout grate.

Good luck with it. If the 3730 is any indicator the manual isn't joking when it says "...especially if you have a Model 3731 which can heat a small house"
3 years w/ wood stove -> 1 year w/ coal stove -> coal boiler installed 10/3/08.... it's evolution baby!

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Cap
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Hand Fed Coal Stove: Harman SF 250, domestic hot water loop, heat accumulator
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Post Mon. Sep. 01, 2008 8:36 am

Thanks Djackman, I have the larger 3731. It only has one port in the rear near the top. But there must be some sort of connector missing. The outlet port is an odd size at 4.25", not sure how I would adapt to it. I do not have any manual except for a .pdf I discovered on a Canadian site with some specs.
Cap
Lehigh Twp.
Northampton Co., PA


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Post Mon. Sep. 01, 2008 9:28 am

A talented/experienced sheet metal/stove shop can make you an adapter.
I am not an engineer, train or otherwise!
I stay at a Holiday Inn at least once a year!
Most of all I do have common sense and a practical application of logic.
Oh, add humor, on the dry side, along with a wee bit 'o sarcasm.

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Cap
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Posts: 1581
Joined: Fri. Dec. 02, 2005 10:36 pm
Hand Fed Coal Stove: Harman SF 250, domestic hot water loop, heat accumulator
Coal Size/Type: Nut and Stove
Other Heating: Heat Pumps
Location: Lehigh Twp, PA
Contact:

Post Mon. Sep. 01, 2008 6:09 pm

Subject: Grand Godin Round Stove Question

I wrote to Stovefinders of France & England:

Dear Sir,

Can you help explain a technical question concerning a Godin Grand Oval model 3721.

I recently acquired this stove. I am in process of preparing it for winter use. Having done a few hrs of research on the internet brought me to your site. I have found some of the best images yet on your site.

Question: Some Godin's have a adapter on the rear connected to two ports, middle & top. All of your units have it. It connects to two ports on the rear of the barrel. But the unit I own has only one port, at the rear top of the barrel. Can you explain the advantage of the dual port vs. single port? And what does the metal adapter unit which connects to both ports do for the stove? I provided an image.


The manifold attached to the rear of the stove has 2 purposes, it allows the option to connect either top or bottom with the advantage of the lower fitting being that the hot flue gases have to travel over a greater distance and therefore release more heat to air. In practice the flue gases don't really enjoy travelling down and the flue spigot outlet becomes blocked more quickly. In using the upper outlet the debris from the stove will settle at the base of the manifold and rarely if ever block. The manifold acts as a soot catcher the the spigot fitted to the upper outlet.
I have just re-read what you have written. When the older stoves had an outlet at the top and bottom the lower one allowed gases to exit the stove low down when the fire was low, in practice they blocked up and were useless. On later and new Petit godin stoves the manifold attached to the outside of the stove only connected to an upper port although the flue spigot could be attached to either the top or the bottom manifold opening, that what I was referring to in the first paragraph.

What you have is closer to the current design but without the manifold, so probably the best design for these stoves but without the soot catcher (manifold).

Jamie
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Cap
Lehigh Twp.
Northampton Co., PA

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Post Mon. Sep. 01, 2008 7:11 pm

4.25 is in inches.Thats a commom size in eur.If I remember it is like 110mm.My wood stove has a 4.25" to 6" adaptor.
DON

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