14
Vent-Free Gas Log Heater User Manual
FLOOR CLEARANCES
In addition to meeting noncombustible material clearances, you must also meet required clearances between
fireplace opening and mantel shelf. A fireplace hood must be used if you do not meet the below clearances.
A. If installing the heater on floor level, you must maintain the minimum distance of 5" to combustibles (see
Fig. 7).
B. If combustible materials are less than 5" to the fireplace, you must install the heater at least 5" above the
combustible flooring (see Fig. 8).
Installation (cont.)
Combustible
Material
Non-Combustible
Material
5"
Min.
Fig. 7—Minimum Fireplace
Clearances if Installed at Floor Level
Combustible
Material
Hearth
5 in.
Min.
Fig. 8—Minimum Fireplace
Clearances above Combustible Flooring
Log Set Size
18"
24"
Chimney
Height*
(ft)
Minimum Opening**
(sq. in.)
6
25.7
33.8
8
23.7
31.2
10
21.7
28.7
15
19.9
26.1
20
18.5
23.7
30
16.9
21.6
Log Set Size
18"
24"
Chimney
Height*
(ft)
Minimum Opening**
(sq. in.)
10
16.6
22.1
15
12.6
17.3
20
10.8
14.5
25
9.6
12.6
30
9.1
11.3
35
8.0
10.8
40
7.5
10.2
For Masonry-Built Fireplaces Free
Opening Area of Chimney Damper
For Factory-Built Fireplaces Free
Opening Area of Chimney Damper
* Height is from hearth to hte top of the
chimney and the minimum height is 6 feet.
** Chart shows a minimum opening (sq. in.)
for a given height and input rate.
* Height is from hearth to the top of the
chimney and the minimum height is 10 feet.
** Chart shows a minimum opening (sq. in.)
for a given height and input rate.
WHEN USED AS A
VENTED
LOG SET
