6
When operated as a Vent Free Heater, the minimum clearances from the fireplace opening to combustible materials must be
maintained as outlined below .
VENT FREE APPLICATIONS
●
MINIMUM CLEARANCES TO COMBUSTIBLES
10”
8”
6”
2.5”
.75”
MANTEL CLEARANCE WITHOUT HOOD
MANTEL CLEARANCE WITH HOOD
*Standard Fireplace Hood
with a minimum 4 inch
horizontal projection
Horizontal projection from
face of fireplace
(not to scale)
IF YOU CANNOT MEET THESE MINIMUM CLEARANCES YOU MUST OPERATE THE APPLIANCE AS A VENTED
APPLIANCE WITH CHIMNEY FLUE DAMPER OPEN. (See notes regarding vented installation on following page)
30”+
28”
25”
20”
12”
0-12" 0"
12"-20" 3/4"
20"-25" 2
1/2"
25"-28" 6"
28"-30" 8"
30" plus
10"
Height
Above
Opening
Projection
Out From
Face
42”
15 1/2”
MINIMUM CLEARANCES TO SIDE WALL AND CEILING
Side wall: 15 1/2" from side of fireplace opening.
Ceiling: 42" from top of fireplace opening.
NOTE:
Clearances to Combustible Construction are those
distances required to ensure that a fireplace mantel or facing
will not catch fire. In most cases they should also be adequate
to prevent any discoloration or warping due to heat. However,
each and every decorative gas appliance installation
(ALTERNA™ included) presents a different and completely
unique set of circumstances involving many variables beyond
the control of the manufacturer. These include paint or finish
composition, previous exposure to heat, methods and quality of
construction, air flow patterns, glass doors, fans or blowers, etc.
Because of these variables, we cannot guarantee that heat
warping or discoloration will never occur. The potential for heat
warping or discoloration may exist whether you are burning an
ALTERNA™, some other manufacturer's decorative gas
appliance or even wood.
30”+
28”
12”
0"-10" 0"
10"-12" 1
1/2"
12"-15" 2
1/2"
15"-17" 6"
17"-20" 8"
20" plus
10"
Height
Above
Opening
Projection
Out From
Face
Distances from Top of
Firebox Opening to
Underside of Mantel
10”
8”
6”
2.5”
.75”
Distances from Top of
Firebox Opening to
Underside of Mantel
Non combustible or heat resistant
material (gypsum board, marble,
sheet rock, slate, tile etc.)
20”
25”
A fireplace hood deflects heat away from the fireplace face and mantel, reducing the potential for heat related warping or discoloration.
The use of a fireplace hood is highly recommended.*
Non combustible or heat resistant
material (gypsum board, marble,
sheet rock, slate, tile etc.)
