6
Installing the boiler
Logano plus GB312 - Technical specifications are subject to change without prior notice
28
6.8
Design of flue and air pipe for direct vent operation
Fig. 18 Wall-exit air pipe, roof-exit flue
1
Flue outlet (type of outlet depends on chosen manufac-
turer, e.g. 90° elbow or T-piece)
2
Air inlet (T-piece fitted horizontally or 90° elbow)
3
External wall
4
Roof
Fig. 19 Wall-exit air pipe and flue
1;2
Flue outlet (external-wall flue requires horizontally or verti-
cally mounted T-piece), observe clearances specified in
Fig. 12
3
Air intake terminal (90° elbow facing vertically down-
wards)
4
External wall
Fig. 20 Roof-exit air pipe and flue
1
Flue outlet (type of outlet depends on chosen manufac-
turer, e.g. 90° elbow or T-piece), observe clearances
specified in Fig. 17
2
Air inlet terminal (90° elbow pointing away from flue outlet)
3
Roof
Fig. 21 Roof-exit air pipe, wall-exit flue
1
Flue outlet (external-wall flue requires horizontally
mounted T-piece or 90° elbow facing downwards)
2
Air inlet (90° elbow or T-piece)
3
External wall
4
Roof
7 747 010 720-17.2RS
1
2
2
3
4
1
1
7 747 010 720-20.2RS
1
3
2
4
7 747 010 720-19.2RS
1
3
2
1
1
7 747 010 720-21.2RS
1
3
2
1
2
4