Roberts Gorden ENERGYTUBE AG Series Installation, Operation & Service Manual page 15

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
A
E
Unvented
Radiant Tubes
Vented
Model
AG-40
Vent
AG-60
Pipes
AG-80
AG-100
AG-125
F
AG-150
AG-175
(inches)
A E F
14 18 18
14 18 18
20 24 18
20 24 18
20 24 18
20 30 18
20 30 18
SECTION 3: C C
LEARANCES TO OMBUSTIBLES
(centimeters)
A E F
36 46 46
36 46 46
51 61 46
51 61 46
51 61 46
51 77 46
51 77 46
9 of 57