Ferroli TEMPRA 30 Installation, Service And User Instructions Manual page 15

3.03.3 Direct concentric back exit
Boiler could be converted for direct back exit as showed on
picture 14.
A special kit is necessary for connecting the rear concentric pipe.
Conversion procedure and installation instrucions are inserted into
the kit.
3.03.4 Maximum concentric fl ue length
First table below shows the maximum fl ue lengths available for boilers with concentric systems.
For correct calculation remember to include the reduction for bends on second table. Please refer to
3.03 for use of restrictor
Maximum flue lenght
permissible
Tempra 30
*For horizontal Flueing the reduction for appliance bend or turret are already included.
Reduction for bend
100 mm concentric bend 90°
100 mm concentric bend 45°
125 mm concentric bend 90°
125 mm concentric bend 45°
100 m concentric
Vertical Horizontal
4 m 3 m
1 m
0,5 m
0,5 m
0,25 m
max. 3 m
concentric
100/60
Fig. 15a
TEMPRA 30
Fig. 14
125 mm concentric
Direct back exit
Vertical
1 m
5 m
(no bend allowed)
Horizontal
5 m
concentric
100/60
Fig. 15b
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