New Stainless Liner

charlie123

In my 900 sq foot house on Long Island, the ~40 year old Utica OBT-3 has a 6" flue leading to the chimney. The OBT was rated as 131 in and 113 out, with 97 the lowest possible output (I don't know what nozzle is being used).

I'm told that the chimney is very clean but the tile(?) that lines the chimney is shifting a bit and the edges are corroding.

I'm not sure when I'm going to spring for a new EK-1 but I think I should get the liner in while there are no obstructions in the chimney. One person suggested that what works for EK might not work for my OBT and I should wait until the EK goes in.

A few questions: will my OBT work fine into the smaller 5.5" stainless liner that I'm told is standard for the EK-1? Actually I was told either 5 or 5.5 is used for EK, the chimney appears to be ~20 feet tall, I'm not sure how to determine when one would use 5 vs 5.5".

I expect that the chimney liner installer would adapt my OBT to the 5.5 and the EK installer would adapt back to the 5.5: is there a standard distance that the liner should come out from the wall?

Lastly, I hear that you can insulate the liner: is this recommended?

Thanks

EBEBRATT-Ed

Usually no need to insulate the liner especially in an interior chimney. If the chimney is exposed on the outside of the house maybe.

Liner is sized by the height of the liner and its diameter and the BTU input. You can look up a chart on line if you know the brand of liner

charlie123

Thanks Ed, I'm guessing that my chimney is considered exterior so I'll consider insulation. One installer suggested that insulation would add 60-80% to the price of a liner installation, I'm assuming he's way off.

I spoke to Utica today and as you said, even with my current 6" flue, if the sleeve is rated for the current BTU's I should be fine.