Hoval 51-UltraGas 2 1000, Installation Instructions Manual

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MAINTENANCE
10. If the burner cylinder web is dirty or damaged, carry
out the following steps:
- Swivel the burner with boiler door closed down-
wards.
- Removing burner cylinder:
- Unfasten the earth wire on the burner cylinder.
Earth wire
Fig. 46
- Unscrew the fan and gas mixing device.
Fan and gas mixing device
Fig. 47
- Unscrew intermediate flange (Fig. 50).
- Remove the burner cylinder upwards (Fig. 48).
CAUTION
Danger of burns
• Let the boiler cool down or wear protective
clothing.
• Wear safety gloves when removing the
burner cylinder.
Burner cylinder
Fig. 48
- Loosen the seals of the fan, intermediate flange and
burner cylinder and check for wear.
- Cleaning the burner cylinder if required:
- Clean the burner cylinder inside and out with
compressed air or thoroughly flush with water.
- Remove released dust and dirt particles with a
vacuum cleaner.
Vacuum cleaner
Fig. 49
- Make sure that the burner cylinder is dry.
- Assemble the burner in the reverse order according
to Fig. 50.
- Replace the burner cylinder if it is defective.
- Replace the seal if signs of wear are visible.
Burner cylinder
Fan
Seal
Intermediate flange
4219076
27.05.2020 HOJK
ETL Brenner 50-UltraGas 2
(300-450)
A4
12976673 C84 000 02
/ / /
Seal
Seal
Fig. 50
- Fasten the earth wire (Fig. 46) on the burner cylin-
der.
- Swivel the burner upwards, with the boiler door
(Fig. 45)
11. Clean and adjust ignition and ionisation devices.
- Sand ignition and ionisation devices with fine sand -
paper if required.
- Clean away the sanding dust.
- Check all electrode gaps (see Fig. 51 and Fig. 52).
Ignition electrode
Ignition/ionisation electrode
4 mm
Fig. 51
10 ±2 mm
5 mm ±1 mm
Fig. 52