Bellfires® BMR Spider Damper
33
After the chimney liner has been installed, but before the chimney cap is placed, the top mounted Spider
Damper must be installed. The Spider Damper is placed in the top section of the chimney liner.
The Spider Drop-in Damper (25-1) (Part #21) installs typically like other top mounted dampers. The bottom
hook-up is also typical. Attach the ring on the 28’ stainless cable (Part #22) to the underside ring of the Spider
Damper. (25-2) The installer must go to the roof and place the Spider Drop-in Damper inside the top section of
the chimney liner until handles of damper don't go any further down. (25-3, 25-4) Unroll cable, dropping it all
the way down the flue until cable reaches the firebox. The important installation step to be observed is as fol-
lows: check for tightness in between flue walls and outside damper. Any air clearance should be sealed with flat
gasket or silicone caulk. (25-5) Check damper plate to be sure it moves freely. Because blade is counterweight,
damper should always be in the opening position.
25-3
25-4
25-5
25-1
25-2
Round
chimney
liner
PLEASE
NOTE!!!
The Spider Damper® may
only be used with the
Bellfires® BMR model. The
Bellfires® BM is usually
installed with rectangular
tile and the Spider Damper
is only usable with round
liners. We recommend
using a rectangular top
mounted damper such as
the Lyemance Locktop.
Summary of Contents for BM 21
Page 1: ...BM Models BM 21 BM 25 BM 28 BMR Models BM 21R BM 25R BM 28R Bellfires...
Page 11: ...Bellfires BM BR 11...
Page 38: ......