Filter
Top Products
CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
8 of 71
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.
*When installed in the first 10' (3 m).
FIGURE 10: 2-FOOT DECO GRILLE AND PROTECTIVE GRILLE
(inches) (centimeters)
Model ABCDABCD
CTH3-80 6 38 66 38 16 97 168 97
CTH3-115 6 46 77 46 16 117 196 117
CTH3-150 6 50 80 50 16 127 204 127
CTH3-200 8 52825221133209133
A
C
D
B
FIGURE 11: LOWER CLEARANCE SHIELD*
(inches) (centimeters)
Model ABCDABCD
CTH3-80 6 40 38 40 16 102 97 102
CTH3-115 6 54 48 54 16 138 122 138
CTH3-150 6 55 50 55 16 140 127 140
CTH3-200
- UNAPPROVED -
- UNAPPROVED -
A
C
D
B
FIGURE 12: VENTING
(inches) (centimeters)
Model A E F A E F
CTH3-80 20 24 18 51 61 46
CTH3-115 20 24 18 51 61 46
CTH3-150 20 30 18 51 77 46
CTH3-200 20 30 18 51 77 46
Radiant Tubes
Vent
Pipes
Unvented
Vented
A
E
F