Baxi LUNA DUO-TEC 60 GA Installation Instructions For The Installer page 28


12" (305 mm) Min. horizontal separation between combustion air intake and vent of same appliance.
 12" (305 mm) Min. 84" (2.2 m) Max. vertical separation between combustion air intake and vent of different appliances.
 15" (381 mm) Max. horizontal length of vent.
Roof
 Min. vent/intake between different appliances 12" (305 mm).
Terminations
 Max. allowable total vertical vent length with outside exposure is 10 ft.(3.05 m).
 Abandoned unused masonry chimney may be used as chase-way for combustion air and vent. Both combustion air and vent pipe must
exit above top of chimney with clearances as shown in Figure 6-17.
FIGURE 6-15- Twin Pipe on Roof Combustion
Air On Sidewall
Vent Terminal
Combustion Air
Ground
Level
FIGURE 6-16 - Twin Pipe Flue On Sidewall,
Combustion Air On Roof
Combustion Air
Vent - T Terminal
12" (305 mm)Anticipated
Snow Line
240012485 REV C [06/30/2019]
FIGURE 6-17 - (3") Twin Pipe Roof Vent
12" (305 mm) Min.
Vent
12" (305 mm) US,
18" (458 mm) Canada
Min. Above
Anticipated Snow Line
FIGURE 6-18 - Single Wall Exhaust Kit and Air Intake Minimum
Distance Center to Center
See Grade,
Snow & Ice
FIGURE 6-19 - Horizontal Twin Pipe, Exhaust and Intake
12" (305 mm) Minimum
Separation
See Grade,
Snow & Ice
28
15" (381 mm) Max.
Roof Line
Combustion Air
43/4"
[120 mm]
Manufacturer
Recommends
Greater Separation