Dismantling The Burner - Daikin GCU compact Series Installation And Operating Instructions Manual

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 Fig. 7-5, test dimensions bold).
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
Chap. 7.3.3).
Fig. 7-5 Adjustment of the ignition and ionisation electrodes
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GCU compact 315 / 320 / 515 / 520 (Biv)
Gas Combi Unit
Floor-standing gas condensing boiler with integrated heat storage
008.1543899_02 – 04/2019 – EN
7 Heat cell with gas burner
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 Chap. 4.8.3).
5 Pull off the securing clip (Fig.
6 Disconnect the mains plug for the blower and the connector for
the blower controller (Fig. 7-6, item 4+5).
7 Unscrew the fixing screws on the burner flange
Fig. 7-6 Burner removal (example shown for burner
1 Securing clip
2 Burner flange seal
3 Burner surface
4 Connector, blower controller
Chap. 4.4.3).
7-6, item 1) for the Venturi nozzle.
(Fig. 7-6, item 6).
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Installation and operating instructions
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