Setting Manual Operation ( Symbol); Commissioning - DeDietrich C230 ECO-A 120 Installation, Operating And Service Manual

C230 ECO-A
Fig. 25 Setting manual operation
9.2

Commissioning

9.1.8

Setting manual operation ( symbol)

In some cases, it may be necessary to set the boiler to manual
operation, for example when the controller has not yet been
connected. The boiler can be set to automatic or manual operation
under the symbol. Do this as follows:
Press the -key several times until the
bar;
Press the -key once, either the minimum flow temperature or
ZVt; (only if an external sensor has been connected) will appear
in the display; the flow temperature is determined by the internal
heating curve;
or 68°F (20°C) (minimum flow temperature) will appear in the
display;
Press the [+] -key to increase this value in manual operation
temporarily;
Confirm with the -key;
The boiler is now set to manual operation;
Press the -key once to exit manual operation; the boiler enters
operating status.
Manual operation keeps active after power breakdown.

Ensure that the boiler is disconnected from the power supply.
1. Remove front panel.
2. Open the main gas cock.
3. Check the electrical connections including earth.
4. Fill the boiler and the system with water (minimum pressure 11.6
psi (0.8 bar)).
5. Vent the system.
6. Fill the trap with clean water.
7. Check the flue gas discharge connection and air supply
connection.
8. Vent the gas pipe (only vent pipework from gas isolation valve).
9. Open the gas cock in the gas pipe to the boiler.
10. Check the gas connection for leakage.
11. Switch on the mains supply to the boiler.
12. Adjust the boiler and any external controls to heat demand.
13. The boiler now starts to run.
Operation can now be monitored via the code window:
With a heat demand
1 Boiler starts
2 Burner starts
3 Central heating operation; briefly in part load then in full
load
symbol flashes in the menu
:
9 Commissioning
57