SECTION 6: C
RITICAL
C
ONSIDERATIONS
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 11: STANDARD REFLECTOR
(inches)
(centimeters)
Model
A
B
C
D
A
B
C
D
CTHN-40
5
20
41
20
13
51
104
51
CTHN-60
5
27
51
27
13
69
130
69
CTHN-80
5
30
58
30
13
76
147
76
CTHN-100
5
32
60
32
13
81
152
81
CTHN-125
5
35
65
35
13
89
165
89
CTHN-150
5
39
71
39
13
99
180
99
CTHN-175
8
44
74
44
20
112
188
112
CTHN-200
8
47
76
47
20
119
193
119
FIGURE 12: ONE SIDE REFLECTOR
(inches)
(centimeters)
Model
A
B
C
D
A
B
C
D
CTHN-40
5
6
46
35
13
15
117
88
CTHN-60
5
6
55
44
13
15
140
110
CTHN-80
5
6
64
49
13
15
163
123
CTHN-100
5
6
66
51
13
15
168
128
CTHN-125
5
6
69
58
13
15
175
145
CTHN-150
5
6
75
60
13
15
191
150
CTHN-175
8
6
77
68
20
15
196
170
CTHN-200
8
6
79
70
20
15
201
175
A
C
D
B
FIGURE 13: TWO SIDE REFLECTORS
(inches)
(centimeters)
Model
A
B
C
D
A
B
C
D
CTHN-40
5
16
47
16
13
41
119
41
CTHN-60
5
18
56
18
13
46
142
46
CTHN-80
5
21
65
21
13
53
165
53
CTHN-100
5
23
68
23
13
58
173
58
CTHN-125
5
26
73
26
13
66
185
66
CTHN-150
5
30
76
30
13
76
193
76
CTHN-175
8
32
88
32
20
81
224
81
CTHN-200
8
33
90
33
20
84
229
84
A
C
D
B