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DX2
Series
When installing the tube heating system, the minimum clearances to combustibles for your model tube
heater and system configuration must be maintained. Refer to Chart 2.4 below to determine the required
distances for your model.
Chart 2.4 •
Clearances to Combustibles in Inches (cm) (see figure 2.1 for Mounting Angles)
Model Number
DX2 (20, 30, 40) - 50, 60 [N, P]
with 1 side shield
with 2 side shields
20 ft. from burner
DX2 (20, 30, 40) - 75 [N, P]
with 1 side shield
with 2 side shields
20 ft. from burner
DX2 (20, 30, 40, 50) - (80, 100) [N, P]
with 1 side shield
with 2 side shields
20 ft. from burner
DX2 (30, 40, 50, 60) - 125 [N, P]
with 1 side shield
with 2 side shields
20 ft. from burner
DX2 (40, 50, 60) - 150 [N, P]
with 1 side shield
with 2 side shields
20 ft. from burner
DX2 (40, 50, 60, 70) - 175 [N, P]
with 1 side shield
with 2 side shields
20 ft. from burner
DX2 (50, 60, 70, 80) - 200 [N, P]
with 1 side shield
with 2 side shields
20 ft. from burner
* Heaters mounted on an angle between 0° to 45° must maintain clearances posted for 0° or 45°; whichever is greater.
The stated clearances to combustibles represents a surface temperature of 90°F (50°C) above room temperature.
Building materials 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 ensure that adjacent materials are protected
from degradation.
Figure 2.1
•
Mounting Angles
0° Mounting Angle
Top
Side
Side
Below
Mounting
Angle*
0°
9
45°
39
0°
29
0°
9
0°
7
0°
9
45°
39
0°
29
0°
9
0°
7
0°
14
45°
39
0°
29
0°
16
0°
7
0°
20
45°
58
0°
42
0°
20
0°
7
0°
24
45°
58
0°
42
0°
23
0°
11
0°
34
45°
63
0°
50
0°
30
0°
11
0°
41
45°
63
0°
54
0°
30
0°
11
with 1 Side Shield (P/N: SSE)
45° Mounting Angle
Top
Front
Behind
Front
11
Below
2.0
Safety
Side
Front
Behind
(23)
9
(23)
(99)
8
(20)
(74)
8
(20)
(23)
9
(23)
(18)
7
(18)
(23)
9
(23)
(99)
8
(20)
(74)
8
(20)
(23)
9
(23)
(18)
7
(18)
(36)
14
(36)
(99)
8
(20)
(74)
8
(20)
(41)
16
(41)
(18)
7
(18)
(51)
20
(51)
(147)
8
(20)
(107)
8
(20)
(51)
20
(51)
(18)
7
(18)
(61)
24
(61)
(147)
8
(20)
(107)
8
(20)
(58)
23
(58)
(28)
11
(28)
(86)
34
(86)
(160)
8
(20)
(127)
8
(20)
(76)
30
(76)
(28)
11
(28)
(104)
41
(104)
(160)
8
(20)
(137)
8
(20)
(76)
30
(76)
(28)
11
(28)
0° Mounting Angle
Top
Behind
Below
•
Clearances to Combustibles
Top
Below
6
(15)
47
(119)
10
(25)
47
(119)
6
(15)
47
(119)
6
(15)
47
(119)
6
(15)
30
6
(15)
60
(152)
10
(25)
60
(152)
6
(15)
60
(152)
6
(15)
60
(152)
6
(15)
30
6
(15)
66
(168)
10
(25)
66
(168)
6
(15)
66
(168)
6
(15)
66
(168)
6
(15)
30
6
(15)
76
(193)
10
(25)
76
(193)
6
(15)
76
(193)
6
(15)
76
(193)
6
(15)
30
6
(15)
81
(206)
10
(25)
81
(206)
6
(15)
81
(206)
6
(15)
81
(206)
6
(15)
44
(112)
6
(15)
92
(234)
10
(25)
92
(234)
6
(15)
92
(234)
6
(15)
92
(234)
6
(15)
44
(112)
6
(15)
94
(239)
10
(25)
94
(239)
6
(15)
94
(239)
6
(15)
94
(239)
6
(15)
44
(112)
0° Mounting Angle
with 2 Side Shields (P/N: SSE)
Top
Side
Side
Below
(76)
(76)
(76)
(76)
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