AMPW 400-1000L I&O Manual
27
Figure 11: Vertical Roof Termination
Figure 10: Horizontal Sidewall Termination
. Venting
(continued)
24in. (610mm) MAX
TO WALL (TYP)
12in. (305mm) MIN. ABOVE
GRADE + HIGHEST
ANTICIPATED
SNOW LEVEL
COMBUSTION AIR TERMINAL
VENT TERMINAL
24 in. (610mm) MIN
COMBUSTION AIR
TERMINAL
12in. (305mm) MIN.
ABOVE HIGHEST
ANTICIPATED SNOW
LEVEL
12in. (305mm) MIN.
ABOVE COMBUSTION
AIR TERMINAL
24 in. (610mm) MIN
VENT TERMINAL
VENT TERMINAL
STORM COLLAR
FLASHING
BRACE
(IF REQUIRED)
Vent pipe minimum clearance to combustible
material is 1in. (25mm). combustion air pipe
minimum clearance to combustible material is
zero.
COMBUSTION AIR
TERMINAL
Extend vent/combustion air piping to maintain
minimum vertical (‘X’) and minimum horizontal (‘Y’)
distance of 12 in. (300 mm) [18 in. (460 mm) Canada]
from roof surface. Allow additional vertical (‘X’)
distance for expected snow accumulation.
Figure 9: Slopped Roof Termination