Isokern Magnum 86072-60, Инструкция по установке, эксплуатации и обслуживанию

Страница: 32 / 56

2"
6"
4" 2"
BEARING
2"
6"
WOOD (FLAMMABLE)
SHEATHING
MIN. CLEARANCE
MIN. CLEARANCE
BRICK
VENEER
WOOD (FLAMMABLE)
SHEATHING
MASONRY VENEER
4x6 STEEL L
MASONRY BEYOND
AIR SPACE
MORTAR JOINT
MAX
.
MAX
.
32
Masonry Veneer Construction Details
Brick, stone or other masonry veneer finished fronts to
the Magnum series 86072 fireplaces are possible. Special attention
is required with regards to:
(1) the placement of the proposed masonry veneer facing, its
interface with the Magnum 86072 fire brick lining, and
(2) the masonry veneer and clearance to combustible framing and
sheathing from any steel “L” support used in the masonry veneer
around the front of the Magnum 86072 unit behind the veneer
facing.
Any proposed brick, stone or other masonry veneer
facing must have sufficient foundation to support the full weight
of the veneer work. This may require review by a local structural
engineer prior to construction.
The veneer facing, when installed, must present a tight
seal with the leading edge - the room edge - of the Magnum 86072
fire brick lining at the sides of the firebox opening. (Figure 71)
A steel “L” will need to span the top of the finished
fireplace opening to carry the masonry veneer as it spans over the
firebox opening. (Figures 70 & 71)
By code requirement this steel “L” must have a minimum
four inch (4”) end bearing. This bearing surface area shall be
provided in the veneer work. (Figure 72) It is important that the
steel “L” is set tight against the Magnum’s damper beam front and
set in a mud joint to avoid creating a “false chimney” between
the back of the steel “L” and the Magnum’s damper beam front.
(Figure 73)
Steel “L” or “angle” used to support masonry veneer
as it spans the Magnum’s firebox opening must, in all cases,
have a two inch (2”) minimum clearance to all combustible
materials. The vertical leg of the steel “L” cannot exceed six
inches (6”) in height.
Note: Properly placed combustible sheathing is kept a
minimum of eight inches (9”) away from the Magnum 86072
firebox opening sides and top.
Important: Combustible framing members, normally set at one
and one-half inch (1-1/2”) clearance to the sides of the Magnum
firebox must be moved to at least two inch (2”) clearance to the
firebox sidewalls to maintain required minimum two inch (2”)
clearance to the steel “L” to avoid a potential fire hazard.
Moving framing members two inches (2”) away from
the firebox side walls will maintain the minimum required two
inch (2”) clearance from the steel “L” and, at the same time
allow full four inch (4”) end bearing required for the steel “L”.
(Figure 71)
FIGURE 72
FIGURE 73