Morgan & Company HEARTHSTONE 8470 - Manual (Page 13)

Hearthstone Quality Home Heating Products, Inc. ® Morgan Model 8470 11
Surround Caps
Figure 8 Surround Cap Kit # 94-5970510 (matte) or
94-5970559 (blue/black)
Most zero clearance installations will raise the Morgan
approximately 6” off the hearth or floor. In order to finish
the surrounds, Hearthstone offers a surround cap kit. See
the illustration in figure 8 to see the placement of the
surround caps .
C
ONNECTION T O A M ASONRY C HIMNEY
Consider two primary elements when connecting your
Fireplace Insert to a masonry chimney: the chimney itself
and the thimble where the stovepipe connects to the
chimney. Use only Code approved masonry chimneys
with a flue liner.
Before connecting to a masonry chimney, hire a
professional to examine the chimney for cracks, loose
mortar, and other signs of deterioration and blockage. If
the chimney needs repair, complete them before installing
and using your Fireplace Insert. Do not install your
Fireplace Insert until the chimney is safe for use.
Make sure the chimney’s cleanout is complete and
working properly. To avoid a loss of draft, the cleanout
must close off completely. If allowed to cool, your
Fireplace Insert will perform poorly and creosote will
build up in the chimney.
Make sure the size of the chimney’s flue is appropriate for
this Fireplace Insert and that it is not too large. Use a
masonry chimney with an 8" x 8" (203 mm x 203 mm)
tile size for best results. An oversized flue will contribute
to the accumulation of creosote.
Use the following checklist to ensure that your masonry
chimney meets these minimum requirements:
Chimney wall construction:
 Brick or modular block at least 4" (102 mm) thick.
 A rubble or stone wall.
Flue liner:
 Minimum thickness of 5/8" (16 mm).
 Installed with refractory mortar.
 At least 1" (25 mm) air space.
 An equivalent flue liner must be a listed chimney
liner system meeting type HT requirements or other
approved material. Interior chimney requirements:
 At least 2" (51 mm) clearance to combustible
structure
 Fire stops must be installed at the spaces where the
chimney passes through floors and/or ceiling.
 Insulation must be 2" (51 mm) from the chimney.
Exterior chimney requirements:
 At least 1" (25 mm) clearance to combustible
structure.
Chimney height requirements: (See Illustration)
 At least 3 feet (0.9 m) higher than the highest part of
the roof opening through which it passes.
 At least 2 feet (0.6 m) higher than any part of the roof
within 10 feet (3 m) measured horizontally from the
top of the chimney. This Fireplace Insert requires a
minimum chimney height of 13 feet (4 m). The
maximum allowable chimney height is 30 feet (9m).
The surround must be sealed to the fireplace front or the
damper area around the chimney liner must be sealed to
prevent room air from entering the chimney cavity of the
fireplace.
WARNING Do not remove bricks or mortar from the
existing fireplace (Exception) Masonry or steel
(including the damper plate) may be removed from the
smoke shelf and adjacent damper frame if necessary to
accommodate a chimney liner, provided their removal
will not weaken the structure of the fireplace and
chimney, and will not reduce protection for clearance to
combustible materials to less then required by the
National Building Code