ecoTEC exclusive installation and maintenance instructions / 0020017768_02
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8.5
Maintaining the secondary heat exchanger
d
Danger!
All water conducting components present a
danger of burning and scalding. Only carry out
work on these components once they have
cooled down.
a
Caution!
Protect the electronics box turned down
against sprayed water.
h
Note!
When removing the secondary heat exchanger,
protect the opening in the appliance from dirt
contamination!
4
3
2
1
Fig. 8.6 Cleaning the secondary heat exchanger
• Isolate the appliance from the house electricity circuit
(see Chapter 8.2) and close the gas supply.
• Close the maintenance cocks -if fitted- and the cold
water inlet valve on the inlet combination, and drain
the appliance.
• Release the nut (
4
) on the secondary heat exchanger.
• Release the clamp (
1
) on the preference changeover
valve.
• Release the clamps (
2
) and (
3
) on the secondary heat
exchanger.
• Remove the secondary heat exchanger to the side.
• Flush the secondary heat exchanger thoroughly with
clean water.
• When re-assembling, use new O rings and flat seals,
the part numbers can be obtained from the parts
catalogue.
8.6
Cleaning the condense trap
1
Fig. 8.7 Cleaning the condense trap
d
Danger!
If the device is operated with empty condense
trap, there is risk of poisoning through emitting
flue gases.
Therefore, fill the trap with water again after
each cleaning operation.
• Unscrew the lower section (
1
) of the water condense trap.
• Clean the bottom of the trap by flushing it out with
water.
• Fill the lower section with water until about 10 mm
below the upper edge.
• Fasten the lower section onto the condense trap again.
8 Inspection and maintenance
