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SECTION 3: CLEARANCES TO COMBUSTIBLES
9
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 12: VENTING
(inches) (centimeters)
Model A E F A E F
TF-120 14 18 18 36 46 46
TF-160 20 24 18 51 61 46
TF-200 20 24 18 51 61 46
TF-250 20 24 18 51 61 46
TF-300 20 30 18 51 77 46
TF-350 20 30 18 51 77 46
TF-380 20 30 18 51 77 46
Radiant Tubes
Vent
Pipes
Unvented
Vented
A
E
F