Desa VYM27NR - Manual (Page 9)

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MINIMUM FIREpLACE CLEARANCE
TO COMBUSTIBLE MATERIALS
Side Wall Ceiling
16" 42"
LOG SIZING REQUIREMENTS
Log
Size
Minimum Firebox
Height Depth Width
2" 1" 19" 32"
Carefully follow the instructions below. This will
ensure safe installation into a masonry, UL127-listed
manufactured fireplace, or listed vent-free firebox.
Minimum Clearances For Side Combustible
Material, Side Wall, and Ceiling
A. Clearances from the side of the fireplace
cabinet to any combustible material and wall
should follow diagram in Figure 4.
Example: The face of a mantel, bookshelf,
etc. is made of combustible material and
protrudes 3 1 /
2
" from the wall. This combus-
tible material must be 4" from the side of the
fireplace cabinet (see Figure 4).
Note: When installing your gas logs into
a manufactured firebox, follow firebox
manufacturer’s instructions for minimum
clearances to combustible materials.
B. Clearances from the top of the fireplace opening
to the ceiling should not be less than 42".
NOTICE: Manual control heaters
may be used as a vented product.
If so, you must always run heater
with chimney flue damper open.
If running heater with damper
open, noncombustible material
above fireplace opening is not
needed. Go to Installing Damper
Clamp Accessory for Vented
Operation, page 11.
INSTALLATION
Continued
Figure 4 - Minimum Clearance for
Combustible to Wall
*Minimum 16" from Side Wall
*
Example
Figure 5 - Heat Resistant Material (Slate,
Marble, Tile, etc.) Above Fireplace
MINIMUM NONCOMBUSTIBLE
MATERIAL CLEARANCES
If Not Using Mantel
Note:
If using a mantel, proceed to If Using
Mantel, page 10 If not using a mantel, follow the
information below.
You must have noncombustible material(s) above
both fireplace openings. Noncombustible materi-
als (such as slate, marble, tile, etc.) must be at
least 1/2" thick. With sheet metal, you must have
noncombustible material behind it. Noncombus-
tible material must extend at least 8" up (for all
models). If noncombustible material is less than
12", you must install the fireplace hood accessory.
See Figure 5 for minimum clearances.
IMPORTANT:
If you cannot meet these minimum
clearances, you must operate heater with chimney
flue damper open. Go to Installing Damper Clamp
Accessory for Vented Operation, page 11.
Noncombustible
Material Distance (A) Requirements for
Safe Installation
12" or more Noncombustible
material OK.
Between 8" and 12" Install fireplace hood
accessory (GA6050,
GA6052, or GA6053
see Accessories,
page 25).
Less than 8" Noncombustible
material must be
extended to at least
8". See Between 8"
and 12", above. If
you cannot extend
material, you must
operate heater with
flue damper open.