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TF-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
6
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 20’ (6 m) on each side of the burner.
**Roberts-Gordon prohibits the installation of this heater for all unapproved applications.
FIGURE 8: 2-FOOT DECO GRILLE, 1-FOOT DECO GRILLE AND PROTECTIVE GRILLE
(inches) (centimeters)
Model ABCDABCD
TF-120 6 35 63 35 16 89 161 89
TF-160 6 38 66 38 16 97 168 97
TF-200 6 40 71 40 16 102 181 102
TF-250 6 46 77 46 16 117 196 117
TF-300 6 50 80 50 16 127 204 127
TF-350 8 52 82 52 21 133 209 133
TF-380 8 52 82 52 21 133 209 133
A
C
D
B
FIGURE 9: LOWER CLEARANCE SHIELD*
(inches) (centimeters)
Model ABCDABCD
TF-120 6 39 33 39 16 100 84 100
TF-160 6 40 38 40 16 102 97 102
TF-200 6 50 44 50 16 127 112 127
TF-250 6 54 48 54 16 138 122 138
TF-300 6 55 50 55 16 140 127 140
TF-350**
Unapproved Unapproved
TF-380**
Unapproved Unapproved
A
C
D
B
FIGURE 10: VENTING
(inches) (centimeters)
Model A E F A E F
TF-120 14 18 18 36 46 46
TF-160 20 24 18 51 61 46
TF-200 20 24 18 51 61 46
TF-250 20 24 18 51 61 46
TF-300 20 30 18 51 77 46
TF-350 20 30 18 51 77 46
TF-380 20 30 18 51 77 46
Radiant Tubes
Vent
Pipes
Unvented
Vented
A
E
F