28
Alpha CD12S/20S/28S - Routine Servicing
Fig. 30
Electrode gap
3 - 4 mm
Burner
Burner to electrode
gap 16 mm
Flame sensing
electrode
Front panel insulation
Ignition electrodes
Combustion chamber
front assembly
7.4 RE-ASSEMBLE THE BOILER
1. Replace the burner, ensuring it is located correctly and secure it in position using the four screws previously removed.
Important:
Before replacing the combustion chamber front assembly, pour at least 200 cc of water into the coils of the
heat exchanger. This is to ensure the condensate trap is full of water before operating the boiler.
2. Replace the combustion chamber front assembly, ensuring it is correctly located.
3. Ensure the electrode lead is connected and the seal is in position in the bottom of the room sealed chamber.
4. Test the connections for gas tightness and re-commission, Sections 5.4 and 5.5.
5. Place the front case panel in position and secure in position with the four screws previously removed, see Fig. 30.
6. Raise the control panel and secure in position with the two screws provided.
7. Check the operation of the boiler. (Refer to Boiler Operation, Section 6).
8. Return all controls to their original settings.
Summary of Contents for CD12S
Page 43: ...43 Alpha CD12S 20S 28S...
