Roberts Gorden GordonRay BH-60 Installation, Operation & Service Manual page 13

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
Unvented
Radiant Tubes
Vented
Model
BH-40
E
BH-60
Vent
Pipes
BH-80
BH-100
BH-115/125
F
BH-140/150
BH-175/200
SECTION 3: C
(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
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
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