Table 1
Clearance to Combustibles, inches (cm)
Model B
B1
C1
C2
C3
D**
D1
D2
E
UT SL
UT SL
UT SL
40
63 (160) 49 (125) 25 (64) 48 (122) 41 (105)
10(26) /
16(41)*
10(26) /
16(41)*
8 (21) 10 (26)
48(122) /
14(36)**
18 (46) 20 (51) 10 (26)
60
66 (168) 66 (168) 30 (77) 48 (122) 41 (105)
10(26) /
16(41)*
10(26) /
16(41)*
8 (21) 10 (26)
48(122) /
14(36)**
18 (46) 20 (51) 10 (26)
80
72 (183) 72 (183) 30 (77) 48 (122) 41 (105)
10(26) /
16(41)*
10(26) /
16(41)*
8 (21) 10 (26)
48(122) /
14(36)**
18 (46) 20 (51) 10 (26)
100
72 (183) 72 (183) 32 (82) 48 (122) 41 (105)
10(26) /
16(41)*
10(26) /
16(41)*
8 (21) 10 (26)
48(122) /
20(51)**
18 (46) 20 (51) 10 (26)
125
74 (188) 74 (188) 39 (99) 48 (122) 47 (120)
10(26) /
16(41)*
10(26) /
16(41)*
8 (21) 10 (26)
48(122) /
20(51)**
18 (46) 20 (51) 10 (26)
150
78 (199) 86 (219) 39 (99) 48 (122) 48 (122)
10(26) /
17(44)*
10(26) /
17(44)*
8 (21) 10 (26)
48(122) /
28(72)**
18 (46) 28 (72) 10 (26)
170
86 (219) 86 (219) 48 (122) 48 (122) 48 (122)
10(26) /
17(44)*
10(26) /
17(44)*
11 (28) 10 (26)
48(122) /
40(102)**
18 (46) 28 (72) 10 (26)
200
86 (219) 86 (219) 48 (122) 48 (122) 48 (122)
10(26) /
17(44)*
10(26) /
17(44)*
11 (28) 10 (26)
48(122) /
40(102)**
18 (46) 28 (72) 10 (26)
A
SL UT SL SL
1.4 Clearance to Combustibles.
Minimum clearance to combustibles are shown in Figures 2a/2b. Use in conjunction with Table 1 below.
IMPORTANT:
The stated clearance to combustibles represents a surface temperature of 90°F (50°C) above room temperature.
Building material with a low heat tolerance (such as plastics, vinyl siding, canvas, tri-ply, etc.) may be subject to
degradation at lower temperatures.
It is the installer’s responsibility to assure that adjacent materials are not subject to such degradation.
5
WARNING:
Minimum clearance from the heater must be maintained from vehicles parked below heater.
In all situations, clearances to combustibles must be maintained. Signs should be posted in
storage areas to specify maximum stacking height to maintain required clearance to
combustibles. Such signs must either be posted adjacent to the heater thermostats or in the
absence of such thermostats in a conspicuous location. Refer to mounting clearance tables.
*
unvented ** with end caps