Flexible Vent System - Baxi LUNA DUO-TEC 60 GA Installation Instructions For The Installer

6.10 Flexible Vent System

Flexible Pipe Minimum & Maximum
Vent Lengths
3" [80 mm] Diameter
Pipe
Exhaust
Natalini
Intake
Exhaust
®
DuraVent
Intake
Exhaust
Centrotherm
Intake
Exhaust
Z-Dens
Intake
Single Wall Elbows - Equivalent Length
3" [80 mm]
45° bend 0.82 ft [0.25 m]
90° bend 1.64 ft [0.50 m]
Flexible vent systems shall only be run vertical. Horizontal runs before adapting to flexible must be rigid pipe.
• Maximum vent lengths based on equivalent straight runs only. Include rigid pipe and fittings in overall equivalent length
calculations.
• Flexible venting installations use single wall polypropylene to pass flue gasses to base of chimney, then flexible venting to get
them to termination at the top.
• Combustion air is not supplied through masonry chimney. Combustion air must be from outside using 3" [80 mm] single wall
polypropylene.
• Position boiler to use minimum of rigid single wall polypropylene venting to the chimney.
• Follow venting manufacturer's instructions on assembly and clearances to maintain.
• Avoid sharp bends in flexible venting.
240012485 REV C [06/30/2019]
1.48 GA/ 60 GA
Min Max
6 ft
50 ft
[15.2 m]
[1.8 m]
6 ft
50 ft
[15.2 m]
[1.8 m]
6 ft 50 ft
[15.2 m]
[1.8 m]
6 ft
50 ft
[15.2 m]
[1.8 m]
6 ft
50 ft
[15.2 m]
[1.8 m]
6 ft
50 ft
[15.2 m]
[1.8 m]
NA
FIGURE 6-27 - Flexible Venting System
Flexible Vent
Combustion Air
NOTICE
30
Vent Terminal
Rigid Vent