7
Heat cell with gas burner
Installation and operating instructions
49
Gas Combi Unit
Floor-standing gas condensing boiler with integrated heat storage
008.1543899_02 – 04/2019 – EN
The electrodes are optimally configured at the factory.
After replacement or for maintenance purposes, it may be necessary
to check the electrode spacing and adjust where necessary (for di-
mensions, see
After the electrodes have been replaced or adjusted, the burner
must be restarted, and the function, leak-tightness of the electrode
flanges and the burner settings have to be checked (see
Fig. 7-5
Adjustment of the ignition and ionisation electrodes
7.4
Dismantling the burner
DANGER: RISK OF ELECTROCUTION
Touching live parts can result in an electric shock and lead
to potentially fatal injuries and burns.
▪ Before removal of the burner, shut off the main switch
for the heater and secure against unintentional restart.
DANGER: RISK OF EXPLOSION
Incorrect assembly and dismantling of the burner can
cause the gas to escape.
▪ Always replace the seals.
▪ Observe the fitting positions.
DANGER: RISK OF BURNING
Danger of burning on hot surfaces.
▪ Let the burner cool down sufficiently before dismantling.
▪ Wear protective gloves.
The burner works almost without any wear and residue as a rule. It
may be necessary to dismantle the burner for some cleaning and
servicing jobs or if there is damage in the combustion chamber area.
Removing the burner
1
Block gas supply.
2
Disconnect the GCU compact from the power supply (fuse, main
switch switched off) and secure against being unintentionally re-
started.
3
Remove the protective cover (see
).
4
Remove the cover and front panelling of the heat cell
(see
).
5
Pull off the securing clip (
, item 1) for the Venturi nozzle.
6
Disconnect the mains plug for the blower and the connector for
the blower controller (
7
Unscrew the fixing screws on the burner flange (
Fig. 7-6
Burner removal (example shown for burner
(16)
)
1
Securing clip
2
Burner flange seal
3
Burner surface
4
Connector, blower controller
(16)
GCU compact 315 / 320 / 515 / 520 (Biv)
Summary of Contents for GCU compact Series
Page 2: ......