Configuration
Description
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The maximum pressure drop in the pipes ΔP must not exceed the values given in the table below. The
pipes must be certified for this type of use and for a temperature of more than 100 °C. The terminal part
of the flue gas pipe must be certified as complying with the EN 1856-1 Standard.
If installing discharge and intake pipes not supplied by De Dietrich, these must be certified for the type
of use scheduled and present a maximum pressure drop in line with the values given in the table below.
Tab.26 Maximum pressure drop
Model
Maximum pressure drop ΔP (Pa)
IX 145–50
270
IX 145–70
270
IX 145–90
320
IX 145–110
370
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Flue gas connection to a collective flue for sealed boilers. The air supply is individual via a terminal
coming from outside the building.
The chimney or flue gas pipe must be suitable for such use.
Important
Only original components are authorised for connection to the
boiler and for the terminal.
The clear section must comply with the standard.
The chimney must be swept before installing the discharge flue.
Caution
Ensure that the flue gas discharge pipes are securely attached to
the wall with suitable retaining flanges to prevent any damage and
guarantee the tightness of every gasket in the circuit.
7.5.2
Coaxial pipes
Fig.49
Specifications of the coaxial pipes for IX 145–50 and IX 145–70
247
56
212
MW
-6
0
0
0
2
0
3
-2
Fig.50
Specifications of the coaxial pipes for IX 145–90 and IX 145–110
94
300
300
107
MW
-6
0
0
0
2
0
4
-2
This type of pipe is used to discharge exhaust gases and draw in
combustion air, whether outside the building or in the flue gas pipes. The
90° coaxial elbow is used to connect the boiler to the discharge/intake
pipes in every direction due to the 360° rotation option. It can also be used
as an extra elbow in combination with the coaxial pipe or the 45° elbow. If
discharging to the outside, the discharge/intake pipe must stick out of the
wall by at least 18 mm to allow fitting of the aluminium rosette and its
sealing unit and thus prevent any infiltration of water.
Insertion of a 90° elbow reduces the total length of the pipe by 1 metres.
Insertion of a 45° elbow reduces the total length of the pipe by 0.5
metres.
7 Installation
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