FireRock FIREROCK RUMFORD, Installation, Specification And Operation Manual

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14
FIREPLACE INSTALLATION
STEP 1: FOUNDATION
The FireRock fireplace must be erected on a
noncombustible base with a noncombustible 20” hearth
extension in front of the firebox opening and at least 8” on
either side of the firebox opening (Figure 2.1 on page 12).
There are 2 types of foundations that can be used in this
type of installation.
1. Concrete Slab (Figure 4.1)
2. Concrete Pad Supported by Masonry (CMU)
Tower (Figure 4.2) : Typically used when the
fireplace is placed over a basement or crawl space.
The noncombustible pad is best made from a 6”
thick concrete slab with #4 rebar tied together at
maximum 12” intervals, center poured on top of
corrugated metal. Concrete pad must be supported
by a full masonry tower with no combustible
underpinnings to withstand the weight of the
firebox and flue system.
NOTE : Use of the FireRock base plate is optional for either
of the above foundation types (concrete slab or concrete
pad).
FireRock fireplaces can be installed directly on a
combustible floor or a limited load-bearing floor using our
LiteRock system. See pages 28-30 for installation method.
UL 103 listed metal pipe is required for this installation. Use
of the FireRock base plate is required for this installation.
This fireplace is not designed to sit directly on or abut a combustible surface. Installing this fireplace directly on a
combustible surface may result in a fire or explosion, causing property damage, personal injury, or loss of life.
Foundations and footings must meet local code and
be approved by the local building authority. For any
foundation design and load requirements, check
with a structural engineer. Failure to ensure adequate
foundations can cause significant property damage.
It is the responsibility of the general contractor to
ensure adequate foundations.
DEPTH WIDTH
30”
50” 46”
36”
50” 52”
42” 50” 58”
48” 50” 64”
CONCRETE PAD WITH HEARTH EXTENSION DIMENSIONS
FIGURE 4.1
CONCRETE SLAB
FIGURE 4.2
CONCRETE PAD SUPPORTED BY MASONRY (CMU) TOWER