Zero Clearance WOod Insert

[cemdvm]

I'm completely new to heating with wood. Florida born and raised, now living in an 1800 sq ft cape (built in mid 1990's) in central CT.
Given current oil prices, considering a wood stove insert to make use of the 5 acres of wood on our propertry. Started out talking to vendor at a local store and settled on a Pacific energy Pacific insert. After doing more research I found out that tha Pacific can't be installed into our factory built wood buring fireplace.
They did offer a $7000 zero clearance option. Needless to say, I opted to continue researching. So what I know is that I have a Heatilator model # HB42AI. Manufacturer confirms it is UL127 rated. I can't tell specifics about the chimney pipe currently attached because I can't get to it. Have requested the owner's manual/installation instructions from Heatilator so I'll know what should be up there (assuming the builder followed the instructions).
My current option is the Napoleon 1401 insert (excellent reviews here and on other sites). Wondering if there are any suggestions for other inserts that might fit in my heatilator unit.
Also, do we run the 6 in flexible liner throught the existing flue (probably 8 inch pipe) or does the 8 inch come out?
Thanks

 

[Elderthewelder]

seems like every week or so the same questions come up on zero clearence fireplaces, here is one of the recent ones that talk about the Lennox brand ( formally known as Country). https://www.hearth.com/talk/threads/19073/

They have 2 models for a zc fireplace, the c160 and the c210, I own the c160 a enjoy it

Here is a link to their website
(broken link removed)