Start The Boiler - DeDietrich GTU C 330 User Manual

5 Start the boiler

Fill the siphon with water,
Check the water pressure in the installation. The hydraulic
pressure must be a minimum of 0.8 bars. Adjust the pressure if
necessary, avoiding a sudden influx of cold water into the boiler
when it is hot.
Switch on the appliance
Open the valves on the heating circuit
Open the fuel supply
Provoke a heating request: see below (depending on the type
of control panel)
S3 control panel
Set the boiler thermostats 3 to the desired position. The 2nd
stage thermostat must be set to a value at least 5°C lower than
the 1st stage thermostat.
If there is no control unit, we advise you never to set the
boiler thermostat below mark 4 (approx. 40°C) in order to
avoid the risk of combustion products condensing on the
walls of the boiler.
Control unit in boiler room electrical cabinet:
- See the instructions supplied with the control unit and any remote
control unit used.
Set the On/Off switch to 1.
The boiler starts to operate.
16/01/2020 - 300017846-03
B3 control panel
- Place the boiler thermostat 7 in the required position.
- When preparing domestic hot water, Place thermostat 11 on the
required setting. Setting 6 (approx 60° C) recommended.
This value must always be below the temperature limiter for the
domestic hot water load.
- Set the On/Off switch to 1.
K3 control panel
Place the boiler thermostat 7 in the required position. The boiler is
managed by the boiler fitted with the DIEMATIC-m3 control panel.
DIEMATIC-m3 control panel
Set switch 3 to the AUTO position.
Check that safety thermostat 4 is properly set. To do so,
unscrew the hexagonal cap and press the reset button with a
screwdriver.
Set main On/Off switch 1 to
When the boiler is switched on, the tank exchanger is purged
for one minute if a tank is connected and its temperature is
lower than 25°C.
If disgassing has already taken place, press the MODE key to
suspend disgassing.
See:
- Control panel instructions
- Burner instructions
- Domestic hot water calorifier instructions
GTU C 330
5. Start the boiler
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