HearthStone Quality Home Heating Products, Inc ®
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WFP-75 Model 8411
6.3.5 HEARTH EXTENSION CONSTRUCTION OPTIONS
The WFP-75 may be installed directly on the floor or on a raised combustible or non combustible base.
Installation can be done using one of the following options:
OPTION #1 - INSTALLATION DIRECTLY ON THE FLOOR
•
A 1.00 R value for the hearth extension is required. The non-combustible hearth extension floor area
must extend at least 16" (406 mm)
(B)
in front of the hearth.
•
The joint between the hearth extension and the fireplace
(E)
, for the entire width of the floor protection,
must be protected by a bent and continuous piece of sheet metal (not included).
•
An 80" clearance between the fireplace base and the ceiling
(A)
must be
respected.
NOTE
The floor under the fireplace should match or exceed the height of the floor protection.
Option
Installation type
R factor required
Non combustible floor
protection length
#1
Directly on the floor
Yes (1.00)
16" (406 mm)
#2
Installation raised 4" from floor or less
Yes (1.00)
16" (406 mm)
#3
Installation on a base, raised more than 4"
No
16" (406 mm)
MINIMUM
MEASUREMENTS
A
80" (2032 mm)
B
16" (406mm)
E
2" (51 mm)
