Current Insert - Primary air

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carlo@ITALIA

Member
Dec 2, 2017
15
Italy
Hello I am running an old inset that is quite good BUT unless I have tryed to calm it down by closing as much as possible the intake air (it has only primary) ..at a certain point the draft is soi powerful that the wood will be exhausted very quickly. YOu can load a lot of wood but ..after max 1.5 H the fire is gone...then...coals are quite good in lasting for few hours....maybe 3-4.
My feeling is that lot of energy is going out from the chimeny and I get only a % in the house...
NOTE that I have also reduced at minimum the air needed to keep the glass clean but ...this only slightly changes the behaviour...may be only the coals are lasting more but not the fire....(good news is that the glass stay clean....)

NOW - I would like to improve the BURN TIME / EFFICIENCY.
My idea is the following:
1) find a way to better control the intake primary air and being able to "shut it down" to almost zero
2) practicing some holes and being able to inject secondary air on the top of the box by tubes ...(interesting this box has got a kind of vermiculite on the top..that gets VERY HOT (it turns red...).

To shut dow the primary air one very simple way is to "close" partially the grid where the has falls...

QUESTIONS.

- Any thoughts in general about how my insert currently works?
- Is my plan reasonable? ANy improvements drawbaks?

thanks a lot
carlo