Coleman PxXU-V series Installation Instructions Manual page 16

NOTE: Shaded components of the combustion air/vent sys-
tem shown in the following figures are considered to be part
of the vent terminal. These components should not be
counted when determining piping limitations. Refer to Figure
18 thru Figure 20. Sidewall termination may require sealing or
shielding of building surfaces with a corrosive resistance
material to protect against combustion product corrosion.
OVERHANG
12" MINIMUM
VENT
90°
COMBUSTION AIR
FIGURE 18 : Horizontal Termination Configuration with 12"
Minimum Clearance
OVERHANG
12" MINIMUM
VENT
90°
COMBUSTION AIR
FIGURE 19 : Horizontal Termination Raised
Configuration for Additional Clearance
12" VERTICAL SEPARATION
BETWEEN COMBUSTION
AIR AND VENT
VENT
FIGURE 21 : Vertical Termination
16
12 SEPARATION BETWEEN
BOTTOM OF COMBUSTION AIR
AND BOTTOM OF VENT
MAINTAIN 12" CLEARANCE ABOVE
HIGHEST ANTICIPATED SNOW LEVEL
OR GRADE WHICHEVER IS GREATER
12 SEPARATION BETWEEN
BOTTOM OF COMBUSTION AIR
AND BOTTOM OF VENT
MAINTAIN 12" CLEARANCE ABOVE
HIGHEST ANTICIPATED SNOW LEVEL
OR GRADE WHICHEVER IS GREATER
COMBUSTION AIR
MAINTAIN 12" MINIMUM
CLEARANCEABOVE HIGHEST
ANTICIPATED SNOWLEVEL.
MAXIMUM OF 24" ABOVE ROOF.
OVERHANG
12" MINIMUM
VENT
90°
18" MAX. COMBUSTION AIR
FIGURE 20 : Horizontal Termination Configuration with
Horizontal Extension
VENTING MULTIPLE UNITS
Each unit must have its own intake/vent piping and termina-
tion. Do not use common pipes for combustion air or venting.
The vent terminals must be located as shown in refer to Fig-
ure 22 thru Figure 23.
VENT
COMBUSTION AIR
2"
FIGURE 22 : Double Sidewall Termination
FIGURE 23 : Double Rooftop Termination
035-17468-001 Rev. A (801)
12 SEPARATION BETWEEN
BOTTOM OF COMBUSTION AIR
AND BOTTOM OF VENT
MAINTAIN 12" CLEARANCE ABOVE
HIGHEST ANTICIPATED SNOW LEVEL
OR GRADE WHICHEVER IS GREATER
6"
Unitary Products Group