Expansion Capacity; Connecting The Discharge Pipe To The Condensate Collector Box Siphon; Gas Connection - DeDietrich 24 Installation And Service Manual

6.3.4

Expansion capacity

The boiler is fitted as standard with a 7-litre expansion vessel.
Tab.104 Volume of the expansion vessel in relation to the volume of the heating circuit
Initial pressure of the ex­
pansion vessel
0.5 bar (50 kPa)
1 bar (100 kPa)
1.5 bar (150 kPa)
* Factory configuration
Terms and conditions of validity of the table:
3 bar safety valve.
Average water temperature: 70°C
Flow temperature in the heating circuit: 80°C
Return temperature in the heating circuit: 60°C
Filling pressure in the system lower than or equal to the initial pressure in the expansion vessel.
6.3.5

Connecting the discharge pipe to the condensate collector box siphon

Connect the siphon discharge, located below the boiler, to the discharge of the home using a flexible pipe in accordance with
prevailing standards and regulations. The discharge pipe must have a gradient of at least 3 cm per metre, with a maximum
horizontal length of 5 metres.
Warning
Fill the water siphon before starting the boiler to avoid combustion products from the boiler being emitted into the
room.
Caution
Do not drain condensation water into a roof gutter at any time.
See also
Filling the siphon during installation, page 181
6.4

Gas connection

Caution
Close the main gas cock before starting work on the gas pipes. Before installing, check that the gas meter has
sufficient capacity. To do this, you should keep in mind the consumption of all domestic appliances. If the capacity
of the gas meter is insufficient, inform the local energy supply company.
Remove the protective plug on the boiler gas fitting.
Connect the gas connection pipe to the boiler's gas inlet fitting.
Fit a gas isolation valve on this pipe, directly under the boiler.
Caution
Carefully tighten the boiler gas fitting (maximum torque 30 Nm).
Important
Connect the gas pipe in accordance with prevailing standards and regulations. Make sure that no dust, water etc.
enters the gas pipe. In this case, blow inside the pipe, shaking it vigorously. It is recommended to install a suitable
filter on the gas pipe to prevent the gas valve from being clogged.
7804841 - 02 - 20012022
100 125 150 175
4.8 6.0 7.2 8.4
7.0 * 10.0 12.0 14.0
13.3 16.6 20.0 23.3
Volume of the installation (litres)
200 250 300
9.6 12.0 14.4
16.0 20.0 24.0
26.6 33.3 39.9
6 Installation
> 300
Volume of the system x 0.048
Volume of the system x 0.080
Volume of the system x 0.133
INIDENS
en
169