Table 1. Minimum Heater Clearances From Combustible Surfaces
N I
D
O
O
R
S
D I
E
O
F
H
E
A
T
E
R
N I
C
H
E
S
B
L
A
N
K
6
R
E
A
R
6
P
P I
N I
G
2
4
T
O
P
(
C
H
I
M
N
E
Y
1
3
C
O
N
N
E
C
T
O
R
)
F
R
O
N
T
2
4
2.3.2 Clearances
2.3.3 Flooring
Heaters must never be installed directly on
carpeting.
(
O
U
T
D
O
O
R
S
H
E
L
T
E
R
)
N I
S
T
A
L
L
A
I T
O
N
C
E
N
I T
M
E
T
E
R
S
N I
1
5
1
5
6
1
3
3
0 .
6
1
Do not
O
U
T
D
O
O
R
N I
S
T
A
L
L
A
I T
O
N
C
H
E
S
C
E
N
I T
M
E
T
E
R
S
6
1
5
6
1
5
2
4
6
1
O
P
E
N
U
N
R
O
O
F
E
D
A
R
E
A
2
4
6
1
Notes:
1. Blocks must provide a solid base and be braced so they
cannot slip out of place.
2. Air openings in blocks must be arranged to provide
unrestricted openings through entire width or length of
base.
3. Sheet metal must be at least 24 ga. and extend 6"
beyond the heater jacket on all sides.
Figure 3. Non-Combustible Platform.
Note: Clearances listed in Table 1 are
manufacturer's tested values. These are
given as minimum values. Where local
and national codes apply, and values
are different than those listed in Table 1,
use the greater value to ensure safe
operation.