Vermont Casting 647 BFC - Manual (Page 11)

11
BFC36 Balance Flue Heat-Circulating Fireplace
7412647
Installing the
Chimney System
Start by attaching the first chimney section to the collar
on top of the fireplace.
Install the pipe as pictured in Figure 14. When you
get a good lock, you will hear the pipe clearly snap
together. Once sections are snap-locked in place, it is
extremely difficult to get them apart. Make sure the
pipe is firmly snapped and locked together as each
pipe section is mounted.
When installing elbows, only outer pipe will snap-
lock. Middle pipes simply slide into position. Be sure
to always attach straps on upper elbow to a structural
framing member. (Fig. 15)
Continue installing the pipe as required until pipe is
installed up through the ceiling. At this point, you must
install a firestop spacer.
Installing the Firestop Spacer
in the Ceiling Hole
A firestop spacer is used to keep pipe spaced properly
and required for safety.
Nail the firestop spacer (at each corner) to the framing
members of the ceiling hole. NOTE: A firestop spacer
is not required at the roof.
Hole sizes listed in Figure 11 for angled firestop spac-
ers provide minimum required air space to chimney
pipe for ceiling thickness up to 8” (203mm). When
combined thickness of ceiling material, ceiling joists
and flooring material exceeds 8” (203mm), adjustments
must be made in framing to assure that minimum air
spaces to chimney are maintained.
Proper Firestop Spacer Installation
Figure 16 shows different installation procedures for
both an area that is an attic
and an area that is not an
attic.
If the area above the ceil-
ing is not an attic, position
the firestop spacer with the
flange on the ceiling side
and the angled portion ex-
tending up into the hole.
If the area above the ceiling
is an attic, position the fire-
stop spacer with the flange
on the top of the framed
hole and the angled portion
extending down into the
hole.
UP
FPC558a
BFC
Pipe install
Circulating models
8/21/00 djt
Pipe Section
Pipe
Rim
Hem
Lance
Pipe
Hem
FPC558a
Fig. 14 Install pipe, listening for the snap-lock to fasten.
FP270/271
CR Series
2/19/99 djt
Support Structure
Ceiling
Hole Fram-
ing
Elbow Strap
(must be tight)
Angled Firestop
Chimney Support Strap
(must be tight)
Elbow Strap
Angled Strap
FP270/271
Fig. 15 Attach straps to a structural framing member.
FP593
SR/C
11/20/97
Nails (4)
F irestop
Spacer
Joist
F irestop
Spacer
Nails (4)
Joist
Attic Installation
Ceiling Installation
FP593
Fig. 16 Installing firestop spacer.