Preparation Of Commissioning; Checklist Before Commissioning; Filling The Installation; Filling The Siphon - DeDietrich C 340 Series Installation And User Manual

6

Preparation of commissioning

6.1

Checklist before commissioning

Fig.62 Filling and drain valve location
Fig.63

Filling the siphon

2
1
Fig.64 Gas inlet pressure measuring point
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6.1.1

Filling the installation

The recommended water pressure is between 1.5 bar and 2.0 bar.
Proceed as follows to fill the installation:
1. Disconnect the boiler from the power supply.
2. Fill the central heating system with clean water, using the filling and
drain valve (½", fitted on the front section).
3. Check the water-side connections for tightness.
4. Power up the boiler.
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6.1.2 Filling the siphon
Danger
The siphon must always be sufficiently filled with water. This
prevents flue gases from entering the room.
1. Fill the siphon up to the mark via the condensate collector.
2. Put the sealing cap back on the condensate collector.
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6.1.3

Preparing the gas circuit

Warning
Ensure that the boiler is disconnected from the power supply.
1. Open the main gas valve.
2. Open the boiler gas valve.
A
3. Check the tightness of the gas circuit.
4. Vent the gas supply pipe by unscrewing measuring point A.
The gas supply pipe is properly vented when a gas smell can be
noticed.
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5. Check the gas inlet pressure at measuring point A.
The pressure must be the same as the one shown on the data
plate.
6. Tighten the measuring point again.
6 Preparation of commissioning
C 340 / C 640 55