Cleaning The Condensate Siphon; Cleaning The Filter In The Cold Water Inlet; Cleaning The Heating Filter; Installing The Gas-Air Mixture Unit - Vaillant 0010020394 Installation And Maintenance Instructions Manual

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11.10 Cleaning the condensate siphon

C
1.
Unclip the lower section of the siphon (1) from the up-
per section of the siphon (2).
2.
Remove the float (3).
3.
Flush out the float and lower section of the siphon with
water.
4.
Fill the lower section of the siphon with water up to 10
mm below the upper edge of the condensate drain pipe-
work.
5.
Reinsert the float (3).
Note
Check whether the float is present in the
condensate siphon.
6.
Clip the lower section of the siphon (1) into the upper
section of the siphon (2).

11.11 Cleaning the filter in the cold water inlet

1.
Close the main cold water supply line.
2.
Drain the product on the hot water side.
3.
Remove the connection piece from the connection for
the product's cold water supply.
4.
Clean the filter in the cold water inlet without removing
it.
0020230529_02 ecoFIT sustain Installation and maintenance instructions
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Inspection and maintenance 11

11.12 Cleaning the heating filter

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1
1.
Drain the product. (→ Page 28)
2.
Remove the temperature sensor (1).
3.
Remove the upper clip (2).
4
5
4.
Remove the lower clip (3).
5.
Remove the flow pipe (4).
6.
Remove the heating filter (5) and clean it.
7.
Reinstall the components in the reverse order.

11.13 Installing the gas-air mixture unit

1.
Install the burner.
2.
Install two new burner seals in the burner cover.
3.
Install the gas-air mixture unit.
4.
Tighten the screws on the gas-air mixture unit to 7 Nm.
5.
Install the flue gas pipe.
6.
Install the air intake pipe.
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27

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Ecofit sustain 835Ecofit sustain 825

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