Things You'll Need:
- Gloves
- Phillips Screwdriver
- Chimney Liner Kit
- Possibly a liner "puller"
- Optionally insulation kit
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Step 1
First, measure the dimensions of your existing chimney. Record these and then check the requirements of your appliance. Most high efficiency units use a small diamater liner that is made from a different material, while wood and other less efficient units use a larger diameter, much more robust material.
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Step 2
Take the requirements and dimensions either to your local HVAC shop, or use them for sorting through the multitude of options on the web. Also, determine if you need to insulate around the liner. Typically, insulating your liner can help drastically on a poor drafting wood stove setup, but is not usually necessary on high-efficiency units.
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Step 3
Once you've found the correct liner for your application, and possibly while you are waiting for it to arrive, this is a good time for you to clean the inside of your chimney...either using an actual instrument designed for this, or, in a pinch, a rope with a broom tied on the end from up top, just to knock off any gross stuff. If your chimney is too small to do this, an appropriately sized chimney broom from your local hardware store would do the job.
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Step 4
Once your chimney is clean, and your kit is here, it's time to start. Typically you start from the top, "feeding" the liner into the chimney, keeping it as centered as possible. A couple of extra people, 1 on top and 1 on the bottom really can be helpful here.
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Step 5
Once you have the liner in the chimney, you'll want to terminate the top portion with the (hopefully) supplied clamps and cover. Most of these units simply clamp to the liner and tighten up, allowing it to "hang" from the top cover.
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Step 6
On the bottom, cut and terminate the liner into the appliance with the appropriate connections, wood stoves typically use a Tee, wood inserts typically do not, high efficiency units also do not use a Tee.
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Step 7
Once the top and bottom are in and connected, get everything situated, then go back up on top and seal everything up nice and tight with super-high-temp silicone sealant, making sure there is no place for water to get into the now sealed, and lined, chimney.
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Step 8
THATS IT! Fire up the appliance and check for leaks with a carbom monoxide detector. Go back up on the roof with the unit running and check for the correct draft. If all is well, you're DONE!
