HEI150 Wood Insert Fireplace Installation and Operation Manual
37
8.5.1 Reducing Wall and Ceiling Clearances Safely
Existing
clearances to combustible materials
around the
masonry hearth
may be different
clearances
from a certified
insert.
It is possible to
safely
protect
combustible materials
that
have
clearances
less than those
required for the
insert
HEI150.
Simply attach
permanently
a shield
on flammable
materials.
The
rules for
shields
are sometimes
complicated
, read and
follow them
carefully.
Note
that there may be
slight regional
differences in the rules
to reduce
clearances
, check with
your local building inspector
or
fire
protection
before starting.
8.5.2 Shield construction rules
See figures Clearances for wall and ceiling shield construction and Clearances for top
surround, side surround and shelf shield construction to match each letter to a
clearance.
- Mounting hardware which extends from the shield surface into combustibles may be
used only at the edges of the shield.
- Mounting hardware must allow full vertical ventilation.
THESE SAME
REQUIREMENTS
APPLY
TO
THE TOP SURROUND,
SIDE SURROUND
AND SHELF.