Destination 1.5 Insert Installation and Operation Manual
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8.2 The Masonry Fireplace’s Draft Control System (Throat Damper)
If the fireplace's draft control system is to remain in the masonry fireplace, it must be locked open for
access of the chimney liner or removed entirely. If you remove draft control system from the masonry
hearth, you will need to install the metal plate (27009), supplied with the owner’s manual kit,
indicating that the masonry hearth has been modified. It must be secured inside the masonry hearth,
in a visible place and easy to locate.
8.3 Compliance of a Combustible Mantel Shelf
The maximum shelf depth allowed is 12'' (305 mm). Whatever the shelf depth of less than 12''
(305 mm), the minimum distance from the top of the unit is 13 1/2'' (343 mm).
MAXIMUM MANTEL
SHELF DIMENSION (X)
MANTEL SHELF
CLEARANCES (I)
6’’ / 152 mm
13 ½’’ / 343 mm
8" / 203 mm
13 ½’’ / 343 mm
10" / 254 mm
13 ½’’ / 343 mm
12" / 305mm
13 ½’’ / 343 mm
8.4 Positioning the Unit
It is necessary to have a floor protection made of non-combustible materials that meets the
measurements specified in table
FLOOR PROTECTION
(see
Section 8.5
. To determine the need
to add floor protection (D) beyond the hearth extension, you must do the following calculation using
the data in Table
Data for floor protection calculation
of this section: D = B - (A - C). If the value
(D) is negative or zero, you do not have to add more floor protection in front of the unit, because
the masonry fireplace hearth extension is large enough. If the value (D) is positive, you will need
floor protection in front of the hearth extension at least equivalent to the result (D).
