Wood Stove - Nestor Martin R33 - Connect to existing Chimney- advise needed

[Franktea]

I have a wood stove "Nestor Martin R33" i would like to place it in front of my fireplace and just have the exhaust go out through the existing chimney.

My fireplace is a prefab i dont know what the specs are of the chimney, how can i find out if this is acceptable?

Also is there a easy connection adapter from the exhaust pipe of wood stove to fireplace?

Thanks,
Frank

 

[begreen]

Generally this type of install will need a full stainless liner in the chimney that terminates in the fireplace with a bottom-capped tee. The snout of the tee runs to the stove. The hearth depth will need to be increased so that it extends 16" in front of the stove door.

 

[Franktea]

Thanks for the feedback; I am looking for an option where i can remove the stove in the spring and also have the option to still use the fireplace

 

[bholler]

Do you have the make and model number of the fireplace? if so we can look it up and see if there was even a ht chimney option for it. But it is pretty unlikely you will probably need a full insulated liner

 

[begreen]

Just curious, why would one need an insulated liner in an installation in which the metal chimney is already providing insulation and meets the 2" clearance from combustibles? Insulating is usually the best way to go, but is it code required in this type of installation?

 

[bholler]

but is it code required in this type of installation?

I do not believe that it is but lining prefab chimneys is a bit of a grey area so i am not sure. I guess you would have to go by the instructions of the liner manufacturer and what they recommend because i am pretty sure there is nothing in the code books about it. But our policy is that we insulate every liner we put in regardless of whether it is required by code or not. I guess i should have said you need a full liner and i would recommend insulating it

 

[Franktea]

I really dont understand the need for a liner either; see attached fireplace manual mine is SE36 and Wood Stove Manual;R33
Thanks!

 

[bholler]

Ok do you know which of the chimneys is installed on your fireplace? Is it insulated or air cooled? I ask because it looks like there are a couple ht chimney options. If you have an ht chimney you could (if it is sized right which i doubt and you can securely connect to it) Run a stove through that chimney. But if it is not tested to ht standards it is not designed to stand up to the potential heat of a wood stove and cannot be used

 

[begreen]

That would depend on the chimney they put on the fireplace. If it was true class A UL-103HT chimney then you might be able to rig a transition to the 8" pipe. But most likely is is not. Common on these units is air-cooled pipe of a lower temperature rating. If that is the case a full liner is needed.

 

[Franktea]

Ok do you know which of the chimneys is installed on your fireplace? Is it insulated or air cooled? I ask because it looks like there are a couple ht chimney options. If you have an ht chimney you could (if it is sized right which i doubt and you can securely connect to it) Run a stove through that chimney. But if it is not tested to ht standards it is not designed to stand up to the potential heat of a wood stove and cannot be used

I see a vent on the side of chimney from the outside of house, so i would image thats air cooled. is that good for what i want to do?

 

[begreen]

I would guess that would have little bearing on your install.

 

[bholler]

that is probably your fresh air intake and has nothing to do with the chimney itself

 

[Franktea]

Can someone explain what the benefit of a liner is? Why is the current fireplace / chimney piping not sufficient for wood stove exhaust?

 

[begreen]

Explained above. It is probably not rated for your stove's temperature requirement.

That would depend on the chimney they put on the fireplace. If it was true class A UL-103HT chimney then you might be able to rig a transition to the 8" pipe. But most likely is is not. Common on these units is air-cooled pipe of a lower temperature rating. If that is the case a full liner is needed.

 

[Franktea]

Wouldn't that vent just cool the air from the wood stove?

 

[mellow]

The R33 is a top vent stove, how are you planning to connect the stove to the existing liner?

 

[begreen]

Do you mean the flue gases? If yes, no it wouldn't. The flue gases are kept warm because they are contained in the liner. An insulated liner will keep them even warmer.

 

[begreen]

mellow, I think the R33 is a top or rear vent.

 

[bholler]

Wouldn't that vent just cool the air from the wood stove?

no it is there to supply fresh air to the fire in the fireplace. And you do not want to cool down the exhaust from the stove. You just need a pipe that can handle it

 

[mellow]

You would never know it is rear vent from that manual that was attached, parts diagram only lists a blocking plate as the only reference it might be rear vent.

 

[begreen]

A lot of the European installations show it as rear vent but there are several variations on this design. The H33 and S33 appear to be top vent only. Your point is good and the OP should make sure that his R33 can be set up for rear venting.

 

[Grisu]

Thanks for the feedback; I am looking for an option where i can remove the stove in the spring and also have the option to still use the fireplace

Honestly, I would recommend to place the stove somewhere else with its own chimney then. Moving it every spring and fall while risking damages to the floor or the stove will soon get old. Not to mention that piping the stove into the fireplace without a liner is probably not up to code.

Alternatively, check if the stove has an optional screen that can be placed in the door opening to run it like a fireplace if you want to keep it going in the summer for ambiance.

 

[bholler]

Moving it every spring and fall while risking damages to the floor or the stove will soon get old.

Yeah that stove is over 300 lbs i cant see that it makes any sense to more it that often. It will be hard on you the stove and the floors

 

[mellow]

I never was able to find out how high that rear vent is, I question if it would be to high to vent into the existing fireplace without taking out/lowering the hearth.

 

[Franktea]

I agree moving could be a pain but i would wheel it away and stick it in a closet for the summer.

This stove seems to provide both options rear or top vented; mine is currently configured to exhaust out the top.

Back to square one here is what i am proposing; wood stove in front of fireplace; 90 degree angle pipe from top of stove to fireplace; once pipe is in fireplace 90 degree angle up current chimney and a few feet of wood stove pipe up the chimney and leave it at that.

Is this possible?
Any concerns?

Thanks!