SECTION 3: CLEARANCES TO COMBUSTIBLES
NOTE: 1. All dimensions are from the surfaces of all tubes, couplings and elbows.
2.Clearances B, C and D can be reduced by 50% after 25' (7.5 m) of tubing downstream from where the burner and burner tube connect.
FIGURE 6: 45° Tilt Reflector
Model
(inches)
A B C D
8 8 50 46
8 8 59 54
8 8 65 60
10 8 73 64
10 8 77 69
12 8 83 74
12 8 85 79
(centimeters)
A B C D
21 21 127 117
21 21 150 138
21 21 166 153
26 21 186 163
26 21 196 176
31 21 211 188
31 21 216 201
FIGURE 7: U-Tube, Standard Reflector
B
A
C
D
Model
(inches)
A B C D
- UNAPPROVED -
6 35 62 30
6 38 68 37
6 40 75 39
6 46 78 43
6 50 83 47
8 54 87 51
(centimeters)
A B C D
- UNAPPROVED -
16 89 158 77
16 97 173 94
16 102 191 100
16 117 199 110
16 | 127 | 211 | 120 |
21 138 221 130
FIGURE 8: U-Tube, 45°
A
B
D
C
Model
(inches)
A B C D
- UNAPPROVED -
8 8 59 42
8 8 65 46
8 8 73 52
8 8 77 61
8 8 83 66
8 8 85 70
(centimeters)
A B C D
- UNAPPROVED -
21 21 150 107
21 21 166 117
21 21 186 133
21 21 196 155
21 21 211 168
21 21 216 178
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