Vaillant Air/flue gas system Installation Manual page 16

5 System conditions
5.1.5 Flue gas pipe through the roof, combustion
air from the installation room
L 1
ecoCRAFT VKK../3-E-HL
806
1206
Maximum total pipe length (L1 + L2 + L3)
System
130 mm
diameter
25.0 m
160 mm
diameter
plus 3 diversions 87°
‒
200 mm
diameter
The horizontal flue gas pipe must have a max-
imum length of 6 m, minus the three 87° diver-
sions.
16
L 2
1606 2006 2406 2806
‒
‒
25.0 m
plus 3 diversions 87°
5.1.6 Flue gas pipe through the roof, combustion
air through the external wall
L 1
ecoCRAFT VKK../3-E-HL
806
1206
Maximum total pipe length
System
130 mm
diameter
25.0 m
160 mm
diameter
plus 2 diversions 87°
‒
200 mm
diameter
The horizontal lines must have a maximum length
of 12 m, minus the two 87° diversions, of which
6 m is for the air pipe and max. 6 m is for the flue
gas pipe.
Installation manual Air/flue gas system 0020058722_04
L 2
L 4
1606 2006 2406 2806
(L1 + L2 + L3+ L4)
‒
‒
25.0 m
plus 2 diversions 87°