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21
FIGURE 12B. DIRECT VENT, VERTICAL VENT TERMINATION WITH HORIZONTAL INTAKE.
FIGURE 12C. DIRECT VENT USING TWT WITH VERTICAL INTAKE.
Option B (Figures 12B & 12C)
assures no recirculation of ue gases.
70 EQUIVALENT FEET (27.4m)
OF VENTING (MAX.) AL 29-4C
®
HORIZONTAL AIR INTAKE
PVC PIPE 70
EQUIVALENT FEET (27.4m)
AIR INTAKE TERMINAL
NOTES:
• IF THE EXHAUST VENT TERMINAL IS WITHIN 10’ (3.0m)
OF A WALL OR A PARAPET, IT MIUST EXTEND A MINIMUM
OF 2’ (0.6m) ABOVE THE WALL OR PARAPET.
• ON SIDEWALL VENT INSTALLATION, REFER
TO FIGURE 9F FOR SPACING SPECIFICATIONS
• FOR EXHAUST AND AIR INTAKE PIPE INSTALLATIONS
(CLEARANCES, SUPPORT, ETC.) REFER TO FIGURES
12 AND 12A.
VERTICAL AIR INTAKE MUST BE
12” (305mm) ABOVE ANTICIPATED
SNOW LEVEL.
PVC PIPE 70 EQUIVALENT FEET (27.4m)
70 EQUIVALENT FEET (27.4m)
OF VENTING (MAX.) AL 29-4C
®
NOTES:
• IF THE EXHAUST VENT TERMINAL IS WITHIN 10’ (3.0m)
OF A WALL OR A PARAPET, IT MIUST EXTEND A MINIMUM
OF 2’ (0.6m) ABOVE THE WALL OR PARAPET.
• ON SIDEWALL VENT INSTALLATION, REFER
TO FIGURE 9G FOR SPACING SPECIFICATIONS
• FOR EXHAUST AND AIR INTAKE PIPE INSTALLATIONS
(CLEARANCES, SUPPORT, ETC.) REFER TO FIGURES
12 AND 12A.