Stopping The Boiler; Placing The Plant Out Of Service; Antifreeze Protection; Precautions Required In The Case Of Long Boiler Stops (One Or More Years) - DeDietrich GTU C 330 Installation And Service Manual

6 Stopping the boiler

6.1 Placing the plant out of service

Control panels DIEMATIC-m3 and K3:
The panel must always be supplied with 230V
voltage:
- to ensure the anti-grip of the heating pump,
- to ensure Titan Active System® operation when a titanium anode
is protecting the DHW tank.
Use the mode:
- "summer" to shut down the heating.
- "antifreeze" to shut down the boiler if you are to be absent.

6.2 Antifreeze protection

6.2.1

Precautions required in the case of long boiler stops (one or more years)

- The boiler and the chimney must be swept carefully.
- Close all the doors of the boiler to prevent air from circulating inside
the boiler.
6.2.2

Precautions required if the heating is stopped when there is a risk of freezing

We recommend the use of a correctly dosed antifreeze agent to
prevent to the heating circuit from freezing.
If this cannot be done, drain the system completely.
32
Control panels S3 and B3
1. Set the On/Off switch to O.
See: Control panel instructions
See: Burner instructions
2. Switch off the boiler electrical power supply
3. Close the fuel supply.
- We advise removing the pipe which connects the boiler to the
chimney and to close off the nozzle with a cover.
GTU C 330 07/04/2009 - 300016152-001-C