wrote in message
...

When we lit the stove at xmas smoke came out of the back. Filled the
house with smoke. Checking it today for the first time, there are 2
outlets for the 6-inch pipe that go to the chimmney. The unused one
one the back has a crack and fell off when I touched it. How do I
reattach it. There are no screws or anything. Just an insulation ring.

You do not reattach cracked stove components. Since you are
unfamiliar with stove technology, it would be prudent to hire an
expert (chimney sweeps in the Yellow Pages. Ask if there is a
woodstove or "solid fuel" technical qualification in the jurisdiction where
you live.) If you try to improvise repair without knowing what you
are doing, you may either cause a fire or invalidate your householder
insurance. In some places the fire safety code is the only part of
the building code that is retroactive (i.e. the municipality can order
you to upgrade at your own expense.)

--
Don Phillipson
Carlsbad Springs
(Ottawa, Canada)