Figure 5: U-Tube, Standard Reflector; Figure 6: U-Tube, 45; Figure 7: U-Tube, Opposite 45° Reflector - Roberts Gorden VANTAGE NP CTHN-125 Installation & Operation Manual

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 5: U-TUBE, STANDARD REFLECTOR

FIGURE 6: U-TUBE, 45

FIGURE 7: U-TUBE, OPPOSITE 45
Model
CTHN-40
CTHN-60
CTHN-80
CTHN-100
CTHN-125
CTHN-150
CTHN-175
CTHN-200
°
Model
CTHN-40
CTHN-60
CTHN-80
CTHN-100
CTHN-125
CTHN-150
CTHN-175
CTHN-200
°
REFLECTOR
Model
CTHN-40
CTHN-60
CTHN-80
CTHN-100
CTHN-125
CTHN-150
CTHN-175
CTHN-200
(inches)
A B C
- UNAPPROVED -
5 27 56
5 30 61
5 32 63
5 35 66
5 39 73
8 44 75
8 47 76
(inches)
A B C
- UNAPPROVED -
8 4 47
8 4 54
8 4 57
8 4 63
8 4 66
8 4 69
8 4 73
(inches)
A B C
- UNAPPROVED -
8 45 45
9 55 54
10 56 57
10 58 63
10 61 66
10 68 69
10 71 73
SECTION 3: C
RITICAL
(centimeters)
D A B
- UNAPPROVED -
19 13 69 142
20 13 76 155
20 13 81 160
20 13 89 168
21 13 99 185
26 20 112 191
30 20 119 193
(centimeters)
D A B
- UNAPPROVED -
40 20 10 119
46 20 10 137
48 20 10 145
53 20 10 160
56 20 10 168
59 20 10 175
63 20 10 185
(centimeters)
D A B
- UNAPPROVED -
10 20 114 114
10 23 140 137
10 25 142 145
10 25 147 160
20 25 155 168
20 25 173 175
20 25 180 185
C
ONSIDERATIONS
C D
48
51
51
51
53
66
76
C D
102
117
122
135
142
150
160
C D
25
25
25
25
51
51
51
5