ROBERTS GORDON
®
CTH2-Series S
UBMITTAL
S
HEET
© 2004 Roberts-Gordon
APPLICATIONS, ENGINEERING AND DETAILED GUIDANCE ON SYSTEMS DESIGN, INSTALLATION AND PRODUCT PERFORMANCE IS AVAILABLE UPON REQUEST. ROBERTS GORDON
®
PRODUCTS ARE TO BE
INSTALLED ONLY IN ACCORDANCE WITH LOCAL LAWS, CODES AND REGULATIONS, AND ONLY BY A CONTRACTOR QUALIFIED IN THE INSTALLATION AND SERVICE OF GAS-FIRED HEATING EQUIPMENT.
CLEARANCES TO COMBUSTIBLES
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.
3. “-” indicates an unapproved application. Roberts-Gordon prohibits the installation of
this heater for all unapproved applications.
Standard Reflector
(inches)
(centimeters)
Model
A
B
C
D
A
B
C
D
CTH2-40
6
27
53
27
16
69
135
69
CTH2-60
6
35
63
35
16
89
161
89
CTH2-80
6
38
66
38
16
97
168
97
CTH2-100
6
40
71
40
16
102
181
102
CTH2-125
6
46
77
46
16
117
196
117
CTH2-150
6
50
80
50
16
127
204
127
CTH2-175
8
52
82
52
21
133
209
133
A
B
C
D
One Side Reflector
(inches)
(centimeters)
Model
A
B
C
D
A
B
C
D
CTH2-40
6
9
53
44
16
23
135
112
CTH2-60
6
9
63
47
16
23
161
120
CTH2-80
6
9
70
54
16
23
178
138
CTH2-100
6
9
77
59
16
23
196
150
CTH2-125
6
9
83
65
16
23
211
166
CTH2-150
6
9
86
69
16
23
219
176
CTH2-175
8
9
88
73
21
23
224
186
A
B
C
D
Two Side Reflectors
(inches)
(centimeters)
Model
A
B
C
D
A
B
C
D
CTH2-40
6
15
53
15
16
39
135
39
CTH2-60
6
23
66
23
16
59
168
59
CTH2-80
6
25
72
25
16
64
183
64
CTH2-100
6
27
78
27
16
69
199
69
CTH2-125
6
32
84
32
16
82
214
82
CTH2-150
6
35
88
35
16
89
224
89
CTH2-175
8
40
91
40
21
102
232
102
A
B
C
D
