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SECTION 3: CLEARANCES TO COMBUSTIBLES
9
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 9: U-TUBE, OPPOSITE 45
° REFLECTOR
(inches) (centimeters)
Model ABCDABCD
HE-40
- UNAPPROVED -
- UNAPPROVED -
HE-60 8 54 60 22 21 138 153 56
HE-80 8 60 66 22 21 153 168 56
HE-100 10 64 74 22 26 163 188 56
HE-125 10 70 78 22 26 178 199 56
HE-150 12 74 84 22 31 188 214 56
HE-175 12 76 85 22 31 194 216 56
A
C
D
B
FIGURE 10: 2-FOOT DECO GRILLE AND PROTECTIVE GRILLE
(inches) (centimeters)
Model ABCDABCD
HE-40 6 27 53 27 16 69 135 69
HE-60 6 35 63 35 16 89 161 89
HE-80 6 38 66 38 16 97 168 97
HE-100 6 40 71 40 16 102 181 102
HE-125 6 46 77 46 16 117 196 117
HE-150 6 50 80 50 16 127 204 127
HE-175 8 52 82 52 21 133 209 133
A
C
D
B
FIGURE 11: LOWER CLEARANCE SHIELD*
(inches) (centimeters)
Model ABCDABCD
HE-40 6 34 27 34 16 87 69 87
HE-60 6 39 33 39 16 100 84 100
HE-80 6 40 38 40 16 102 97 102
HE-100 6 50 44 50 16 127 112 127
HE-125 6 54 48 54 16 138 122 138
HE-150 6 55 50 55 16 140 127 140
HE-175
- UNAPPROVED -
- UNAPPROVED -
A
C
D
B