Filling The Installation With Water; Commissioning - DeDietrich GT 224 Installation And Service Manual

3.6 Filling the installation with water

Heating circuit GT 220 - GT 2200
Fill slowly via the low point on the heating installation:
- Either via the filling and draining valve (see drawing above). In
this case, the pipe (internal Ø 14 mm) must be disconnected
after filling.
- Or via the disconnector put in place by the fitter (see mark 50
principle diagrams above).
The installation is bled of air from the top by opening one or more
bleed valves. Close the bleed valve(s) when water comes out.
Check that connectors are leak tight.

3.7 Commissioning

See:
- Control panel instructions,
- Burner instructions,
- Domestic hot water calorifier instructions (L160, L250).
The filling, bleeding and leak tightness checks for the DHW
(if needed) and heating circuits must be done in
compliance with the DHW tank and boiler instructions.
22/01/09 - 300008281-001-E
DHW tank exchanger GT 2200
For the bleeding of the DHW tank exchanger to be done correctly,
proceed as follows:
Unsrew the automatic air vent plug.
Turn the anti-thermosiphon valve to open (O).
These elements will be put back into their initial position once the
boiler has been commissioned.
Check the operation of the heating safety valve.
GT 220 - GT 2200
3. Installation
19