18
Plate with Damper is not allowed in chimneys
serving stoker-fired, liquid or gas burning
appliances. Caution: Do not install Anchor
Plate with Damper on Factory-built fireplaces.
Important: be sure the surface of the masonry
chimney has a level surface on which to attach
the Anchor Plate or Anchor Plate. If the top of
the masonry does not have a level surface,
then you will need to modify the masonry
accordingly. Center the Anchor Plate over
the masonry flue opening. If a Damper is
used, make sure nothing interferes with the
damper plate movement. Seal the Anchor
Plate in place with a high temperature sealant.
Secure Anchor Plate with (4) 2” x 1/4” masonry
anchors
(Fig. 24)
.
3a. Damper Plate:
The Damper Plate should
swing freely once the Anchor Plate is installed.
When the chain is pulled down, the damper
displays in some detail, how these air gaps
are established using the Spacers and Chase
Top Flashing. Secure the Chase Top Flashing
to the chase using a sufficient number of #8,
1-1/2” wood screws, being careful to insure
the air gap is maintained between the flashing
and the chase. Seal the screw heads with
non-hardening sealant. Install the Storm Collar
directly down on top of the collar of the Chase
Top Flashing.
MASONRY FIREPLACE
INSTALLATIONS
1. Determine Chimney Size:
Use
Table 4
to determine the correct diameter chimney for
your fireplace.
2. Mount Anchor Plate:
Chimneys for
masonry fireplaces begin with an Anchor Plate
or Anchor Plate with Damper. Warning: Anchor
Figure 23
ALLOW A 1 INCH AIR GAP
BETWEEN STORM COLLAR
AND CHASE TOP FLASHING
1/4 INCH AIR SPACE
ESTABLISHED BY SPACERS
1/4 INCH
AIR
SPACE
6 INCH MINIMUM
CLEARANCE
BETWEEN BOTTOM
OF CAP AND CHASE
TOP FLASHING
FRAMED CHASE
ENCLOSURE
CHIMNEY
CAP
STORM
COLLAR
CHASE TOP
FLASHING
CHIMNEY
SECTIONS
CHASE TOP
FLASHING SPACER
1/4 INCH
1/4 INCH
