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SECTION 3: CRITICAL CONSIDERATIONS
5
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 5: U-TUBE, STANDARD REFLECTOR
(inches) (centimeters)
Model ABCDABCD
TF-120 6 35 63 30 16 89 161 77
TF-160 6 38 69 37 16 97 176 94
TF-200 6 40 76 39 16 102 194 100
TF-250 6 46 79 43 16 117 201 110
TF-300 6 50 84 47 16 127 214 120
TF-350 8 54 87 51 21 138 221 130
TF-380 8 54 87 51 21 138 221 130
A
C
D
B
FIGURE 6: U-TUBE, 45°
(inches) (centimeters)
Model ABCDABCD
TF-120 8 8 60 42 21 21 153 107
TF-160 8 8 66 46 21 21 168 117
TF-200 8 8 74 52 21 21 188 133
TF-250 8 8 78 61 21 21 199 155
TF-300 8 8 84 66 21 21 214 168
TF-350 8 8 85 70 21 21 216 178
TF-380 8 8 85 70 21 21 216 178
B
C
D
A
FIGURE 7: U-TUBE, OPPOSITE 45° REFLECTOR
(inches) (centimeters)
Model ABCDABCD
TF-120 8 54 60 22 21 138 153 56
TF-160 8 6066222115316856
TF-200 10 64 74 22 26 163 188 56
TF-250 10 70 78 22 26 178 199 56
TF-300 12 74 84 22 31 188 214 56
TF-350 12 76 85 22 31 194 216 56
TF-380 12 76 85 22 31 194 216 56
A
C
D
B