BLUEHELIX TECH RRT 24 C
15
EN
cod. 3541P250 - Rev. 01 - 07/2018
2.6 Flue ducts
B
THE BOILER MUST BE INSTALLED IN PLACES THAT MEET THE FUNDAMENTAL REQUIREMENTS FOR VENTILATION.
OTHERWISE THERE IS A DANGER OF SUFFOCATION OR INTOXICATION.
READ THE INSTALLATION AND MAINTENANCE INSTRUCTIONS BEFORE INSTALLING THE UNIT.
ALSO FOLLOW THE DESIGN INSTRUCTIONS
.
IN CASE OF PRESSURES ABOVE 200 Pa INSIDE THE FUME EXHAUST PIPES, CLASS "H1” FLUES MUST BE USED.
Important
The unit is “type C” with a sealed chamber and forced draught; the air inlet and flue outlet must be connected to one of
the following extraction/suction systems. Before installation, check and carefully observe the above descriptions.
The positioning of wall and/or roof terminals and the minimum distances from windows, walls & ventilation outlets must
be adhered to as per BS5440.
Connection with concentric chimney flues
fig. 23 - Examples of connection with concentric chimney flues (
= Air /
= Fumes)
Table. 2- Max. length concentric chimney flues
For concentric flue installations, you must use one of the following appliance adaptors. For the wall hole dimensions, refer to the
dimensions on the template or refer to Section 4 Technical data & characteristics. Any horizontal sections of the flue must slope slight-
ly back towards the boiler to prevent any condensate causing a nuisance from dripping out the flue terminal.
NOTE
: The flue terminal length must be sealed both inside & out through the external wall with a suitable sand & cement mix.
fig. 24- Appliance adaptors for concentric chimney flues
Concentric 60/100
Concentric 80/125
Max. permissible length (horizontal)
7 m
28 m
Max. permissible length (vertical)
8 m
Reduction factor 90° bend
1 m
0.5 m
Reduction factor 45° bend
0.5 m
0.25 m
C
1X
C
1X
C
3X
C
3X
C
3X
C
1X
11
5 77
Ø 100
Ø 60
Ø 128
Ø 60
Cod. 041088X0
041006X0
041083X0
Ø 80
Ø 127
120
147
Ø 100
Ø 60
11
5
77
Ø 100
Ø 60
Ø 100
Ø 60
992
890
Cod. 041089X0
Ø 128
Ø 60
Ø 100
Ø 60
992
890
