Buderus 500-24C Installation And Maintenance Instructions Manual page 21

Standard vertical flue pack (
– item 1: Vertical flue terminal 60/100;
– item 2: Weather collar;
– item 3: Flue support bracket;
– item 3: Vertical flue adaptor.
1.9.3 Maximum Flue length
A standard flue comprises a 90 degree takeoff bend and
the horizontal flue outlet or straight takeoff and the vertical
flue outlet. The flue can be extended upto a maximum
effective length (L, fig. 22 and 23).
The maximum effective flue length is:
– 12 metres for the 60/100 flue (
– 35 metres for the 80/125 flue (
(see also fig. 22 and 23).
When you have determined the length L for the flue sys-
tem, add up all the bends and extensions used.
Refer to the appropriate table for the effective lengths of
each bend or extension.
The total of the bends and extensions must not add up to
more than the reduction lenghts of the flue length L.
Buderus 500-24C/28C - Subject to modifications resulting from technical improvements
fig. 21):
table 2)
table 3)
1
Fig. 21 Standard vertical flue pack
L
Fig. 22 Vertical flue length
1
Installation
2
3
4
7215 3100-21.1TD
7215 3100-22.1TD
21