Polaris BSS, Инструкция по эксплуатации, Страница: 26 / 63

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*Refer to Figure 11 for Inlet/Outlet Location Dimensions
Alternate Horizontal Termination
Figure 20
VERTICAL VENT TERMINAL INSTALLATION
The vertical inlet air termination requires a return bend or two
short or long sweep radius 90 elbows to keep the inlet downward
and prevent entry of rain. These elbows are considered part of
the termination and should not be included when calculating
the maximum allowable vent pipe length. Refer to Figures 21
and 22 for the proper location of the air inlet with respect to
the exhaust outlet termination. The air inlet and exhaust outlet
terminations must be at least 12 inches above the roof line or
anticipated snow levels.
WHEN TERMINATING THROUGH A ROOF, THE FOLLOWING
SPECIFICATIONS PERTAINING TO TERMINAL LOCATION
MUST BE FOLLOWED.
1. Support horizontal pipe every four feet. Support vertiocal
pipe every six feet.
2. Increase the 12 inch minimum above grade to keep terminal
openings above anticipated snow levels.
FLAT ROOF INSTALLATION
On flat roof installations the air intake and the exhaust vent
terminations must be a minimum of 24 inches (60 cm) above
any parapet, vertical wall or structure within 10 feet (3 m)
horizontally.
PITCHED ROOF INSTALLATION (ALL MODELS)
Exhaust
Vent
See Note 3
12” Min.
See Note 2
Flashing
Roof Line
Anticipated
Snow Level
Notes:
1. Support Horizontal Pipe Every
Four Feet. Support Vertical Pipe
Every Six Feet.
2. Increase The 12 Inch Minimum
Above Grade To Keep Terminal
Openings Above Anticipated
Snow Levels.
3. See Figure 11 from "Vent Pipe
Termination" on page 23 to properly
locate the inlet and exhaust
terminals.
Figure 21
FLAT ROOF INSTALLATION (ALL MODELS)
Combustion Air Termination and Exhaust Air Termination
Must Be Located in the Same Pressure Zones.
12" Min.
See Note 2.
See Note 3.
1. Support Horizontal Pipe Every
Four Feet. Support Vertical Pipe
Every Six Feet.
2. Increase The 12 Inch Minimum
Above Grade To Keep Terminal
Openings Above Anticipated
Snow Levels.
3. See Figure 11 from "Vent Pipe
Termination" on page 23 to properly
locate the inlet and exhaust
terminals.
Figure 22