VENTING
21
7.5 Vertical Terminations
NOTE: Attic insulation shields may be insulated using unfaced
insulation products listed as non-combustible per ASTM E 136.
Table 7.3, NG & LPG - Minimum / Maximum Vertical Terminations
Minimum Vertical Length
Maximum Vertical Length
3 ft
914 mm
50 ft
15.2 m
VENTING DIAGRAM (VERTICAL TERMINATIONS)
(A)
90
°
Elbow (not applicable)
(B)
Vent Heat Shield (not applicable)
(C)
Termination Cap
C
3 ft (914mm) MIN / 50 ft (15.2m) MAX
