8
STEP 4: INSTALLING THE HEARTH
CAUTION:
The Kuma Ashwood Stove can be configured as a Freestanding Stove or as a Fireplace Insert.
Freestanding Stoves can be supported by either Legs or a Pedestal Base. Each configuration has different
floor protection requirements. See the section below that pertains to your particular installation.
Minimum Requirements:
The minimum floor protection requirements for the Kuma Ashwood model are as follows:
Floor protection must consist of a continuous non-combustible material and extend a minimum of 16" in
front of the loading door and 6” to both sides and the rear of the stove body.
Additional requirements for material thickness and thermal resistance are described below.
1.
Ashwood with Pedestal Base
: Installed as a freestanding stove on a pedestal base the Kuma
Ashwood requires Ember Protection only. Ember Protection can take the recommended form of a
manufactured Type-1 floor protector listed to UL-1618, or a non-combustible continuous material
with a MINIMUM thickness of 3/8”.
2.
Ashwood with Legs
: Installed as a freestanding stove on legs the Kuma Ashwood requires both
continuous ember protection and Thermal Protection with a minimum R-Value of 0.60. Thermal
Protection can take the recommended form of a manufactured Type-2 floor protector listed to UL-
1618 with a tested R-Value higher than R = 0.60. Alternately a site built or existing hearth can be
used provided they meet the minimum size and thermal resistance requirements. Never install this
stove with legs on an existing hearth unless you can determine it provides a minimum thermal
resistance of R = 0.60.
3.
Ashwood Insert:
The Ashwood can be installed as a fireplace insert in either a masonry fireplace
in good condition or a factory-built fireplace which is approved for the installation of a fireplace
insert. Minimum floor protection requirements are as follows:
a.
Minimum 1” continuous non-combustible material under the insert and extending at least 17”
in front of the insert face, and 8” to either side of the insert (that is 17” is measured from the
face of the insert and not the ash lip).
This 1” thick material must have an R-Value of R
=1.2or greater
.
b. An Ashwood insert which, when installed, extends out from the fireplace face, but does not
rest on the hearth in front,
and
has at least 2” of airspace between the hearth and the
bottom of the insert bottom, requires ember protection only (Type-1 UL Listed Hearth
Protector or continuous non-combustible material.) This type of installation is more
common in factory-built fireplaces.
MINIMUM Floor Protection size Requirements.
For Free Standing Stove.
For Fireplace insert
USA
a 6”
b 16”
USA
a 8”
a
a
a