Glass Doors; Cold Climate Insulation; Fireplace Finishes; Mantels And Trim - Marco Builder Series Installation Instructions Manual

41" wood burning
Table of Contents

Advertisement

CAUTION: WHEN USING THE DECORATIVE
GAS APPLIANCE, THE FIREPLACE DAMPER
MUST BE SET IN THE FULLY OPEN POSITION.
CAUTION: PLUMBING CONNECTIONS SHOULD
ONLY BE PERFORMED BY A QUALIFIED, LI-
CENSED PLUMBER. MAIN GAS SUPPLY MUST
BE OFF WHEN PLUMBING GAS LINE TO FIRE-
PLACE OR PERFORMING SERVICE.
If you're installing a gas line, connect it before
the fireplace is framed and enclosed in the
finished wall. The gas knockout is determined
by the indentation located at the bottom and
slightly off center in the side refractories. THE
KNOCKOUT IS ALWAYS REMOVED FROM IN-
SIDE THE FIREPLACE. DO NOT REMOVE THE
KNOCKOUT UNLESS YOU ARE INSTALLING A
GAS LINE. If removal is attempted from the
outer wrapper, side refractory damage may
occur. With a medium-sized hammer, lightly
tap the surface of the indentation. The refrac-
tory material is very thin in this area and is easily
removed. Once a small hole has been made,
continue tapping until you have reached suffi-
cient diameter for the gas line to fit through. The
entire knockout does not have to be removed.
Remove insulation in the gas line channel.
IMPORTANT: REPACK INSULATION MATERIAL
IN SQUARE HOLE AROUND GAS LINE, INTE-
RIOR AND EXTERIOR OF FIREPLACE, TO SEAL.

Glass Doors

If glass doors are to be installed on these
fireplaces, refer to specific installation instruc-
tions packed with the glass doors. Use only the
doors that are listed for use with these fire-
places. Use of other non-listed glass door on
these fireplaces may constitute a potential fire
hazard and is not recommended.
CAUTION: CERTAIN GLASS DOORS OVERLAP
THE BLACK METAL FACING OF THE FIRE-
PLACE. IF THE FIREPLACE HAS BEEN FACED
WITH NONCOMBUSTIBLE MATERIALS, THERE
MIGHT NOT BE SUFFICIENT CLEARANCE TO
INSTALL THE GLASS DOORS OF YOUR
CHOICE. ENSURE ADEQUATE CLEARANCE IS
MAINTAINED AT ALL TIMES SO AS NOT TO
INTERFERE WITH THE INSTALLATION AND
OPERATION OF GLASS DOORS.
16

COLD CLIMATE INSULATION

If you live in a cold climate, it is especially
important to seal all cracks around the fireplace
opening with noncombustible material and
wherever cold air could enter the room. Sur-
rounding materials must be caulked where it
meets the black metal facing of the fireplace to
avoid cold air intrusion. Use noncombustible
caulking material only on fireplace facing to
seal. Also, the outside air inlet duct should be
wrapped with noncombustible insulation to
minimize the formation of condensation. Do
not place insulation materials on top of fire-
place or against chimney sections.
Note: A 1"* air space must be preserved for all
combustible materials extending for any con-
tinuous length adjacent to the chimney.
It is especially important to insulate between
the studs of an outside chase cavity and under
the floor if the floor is above ground level. Do
not place insulation directly against the fire-
place or chimney system.

FIREPLACE FINISHES

Mantels and Trim

It is sometimes best to frame your fireplace
after it is positioned and the chimney is in-
stalled. Frame enclosure for chimney and fire-
place with 2 x 4's (or heavier) lumber.
Note: The header may rest on the two (2) metal
top spacers on top of the unit but the header
must not be notched to fit around the spacers.
These fireplaces may sit directly on a combus-
tible surface. A 1"* air space is required be-
tween combustible framing and the chimney. A
1" air space is required between combustible
framing and fireplace outer wrapper. Combus-
tible mantels and trim may be installed 12"
above the fireplace opening as per NFPA 211,
Section 7-2.3.3. and Figure 43 . If a mantel is of
a noncombustible material, it is exempt from
these requirements as long as it does not
interfere with the installation or operation of
glass doors.
*Note: 2" clearance to combustibles required
in Canada.
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
12"
Max.
Combustible
Mantel
and Trim
12"*
Min.
8 3/8"*
Fireplace
Opening
*Both Of These Dimensions Must Be At Least 18"
When An Unvented Gas log Set Rated At 26,000
BTU Or Higher Is Used. (Maximum 40,000 BTU)
Typical Installation
Figure 43
Hearth Extensions and Wall Shields
A hearth extension must be installed with
all fireplaces. It is to protect the combustible
floor in front of the fireplace from both radiant
heat and sparks. The hearth extension must
extend 8" beyond both sides of the fireplace
opening and 16" beyond the front ( Figure 44 ).
Use a hearth extension constructed of a durable
noncombustible material having an equal or
greater insulating value of k = .84BTU IN/FT
°F or a thermal resistance that equals or ex-
ceeds r = 1.19 HR °F FT
2
/BTU IN. With these
values, determine the minimum thickness/ma-
terial required using the formula and the Table
on page 17.
Note: Any noncombustible material whose k
value is less than .84 or whose r value is more
than 1.19 is acceptable.
If the fireplace is installed on a combustible
floor, use the metal safety strips (provided) on
the floor extending half under the fireplace and
half under the hearth extension (refer to Figures
6 and 7 ).
A wall shield is required where a continuous
perpendicular side wall is within 15" of the
fireplace opening, ( Figure 45 ). Use a 40" x 40"
x ¹⁄₂" wall shield constructed of millboard or a
durable, noncombustible material having an
equal or greater insulating value than K = .84BTU
HR °F.
IN/FT
2
Finished
Wall
1 1/2"
Header
Spacer
2
HR

Hide quick links:

Advertisement

Table of Contents
loading

This manual is also suitable for:

B41cfB41hcB41cfiB41hci

Table of Contents