Roberts Gorden Infrared Heater BH-150 User Manual
Page 13
SECTION 3: C
LEARANCES
TO
C
OMBUSTIBLES
7 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 6: 45° Tilt Reflector
(inches)
(centimeters)
Model
A
B
C
D
A
B
C
D
BH-40
8
8
50
46
21
21
127
117
BH-60
8
8
59
54
21
21
150
138
BH-80
8
8
65
60
21
21
166
153
BH-100
10
8
73
64
26
21
186
163
BH-115/125
10
8
77
69
26
21
196
176
BH-140/150
12
8
83
74
31
21
211
188
BH-175/200
12
8
85
79
31
21
216
201
FIGURE 7: U-Tube, Standard Reflector
(inches)
(centimeters)
Model
A
B
C
D
A
B
C
D
BH-40
- UNAPPROVED -
- UNAPPROVED -
BH-60
6
35
62
30
16
89
158
77
BH-80
6
38
68
37
16
97
173
94
BH-100
6
40
75
39
16
102
191
100
BH-115/125
6
46
78
43
16
117
199
110
BH-140/150
6
50
83
47
16
127
211
120
BH-175/200
8
54
87
51
21
138
221
130
B
D
C
A
FIGURE 8: U-Tube, 45°
(inches)
(centimeters)
Model
A
B
C
D
A
B
C
D
BH-40
- UNAPPROVED -
- UNAPPROVED -
BH-60
8
8
59
42
21
21
150
107
BH-80
8
8
65
46
21
21
166
117
BH-100
8
8
73
52
21
21
186
133
BH-115/125
8
8
77
61
21
21
196
155
BH-140/150
8
8
83
66
21
21
211
168
BH-175/200
8
8
85
70
21
21
216
178
C
D
B
A