Coaxial Systems - Navien NCB-24LSWE Installation & Operation Manual

5.3 Coaxial Systems

5.3.1 Horizontal Coaxial Removal (Type C
Standard Removal System
Ø60/100 => Max. length: A=20 m
Ø80/125 => Max. length: A=68 m
Extended Removal System
A
Ø60/100 => Max. length: A+B-(1x90°elbow) = 20-1.3 = 18.7 m
Ø80/125 => Max. length: A+B-(1x90°elbow) = 68-2.2 = 65.8 m
32 Venting the Boiler
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13
A
B 500 or 1,000
851
140 min
W all
B
Ø60/100 => Max. length: A+B-(1x45°elbow) = 20-1 = 19 m
Ø80/125 => Max. length: A+B-(1x45°elbow) = 68-1 = 67 m
Pipe Diameter Maximum
(mm) Length (m)
Ø60/100 20
Ø80/125 68
B
A
Equivalent
Elbow
Length (m)
45° 1.0
90° 1.3
45° 1.0
90° 2.2