9, figure 12 . w, Through – Roberts Gorden Infrared Heater BH-150 User Manual
Page 15
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SECTION 3: C
LEARANCES
TO
C
OMBUSTIBLES
9 of 59
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
BH-40
14
18
18
36
46
46
BH-60
14
18
18
36
46
46
BH-80
20
24
18
51
61
46
BH-100
20
24
18
51
61
46
BH-115/125
20
24
18
51
61
46
BH-140/150
20
30
18
51
77
46
BH-175/200
20
30
18
51
77
46
Radiant Tubes
Vent
Pipes
Unvented
Vented
A
E
F
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