Cleaning The Condensate Trap; Cleaning The Strainer In The Cold Water Inlet; Cleaning The Heating Filter; Installing The Gas-Air Mixture Unit - Vaillant ecoFIT sustain Series Installation And Maintenance Instructions Manual

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Clearance for the ignition electrodes: 3.5 to 4.5 mm
6. Make sure that the seal (5) is free from damage.
▽
If necessary, replace the seal.

12.10 Cleaning the condensate trap

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

12.11 Cleaning the strainer in the cold water inlet

1. Close the main cold water supply line.
2. Drain the product on the domestic hot water side.
3. Remove the connector from the connection for the pro-
duct's cold water pipe.
4. Clean the strainer in the cold water inlet without remov-
ing it.
32
2
B
A
3
1

12.12 Cleaning the heating filter

2
1
1. Drain the product. (→ Page 33)
2. Remove the temperature sensor (1).
3. Remove the upper clip (2).
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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.

12.13 Installing the gas-air mixture unit

1. Install the burner.
2. Install two new burner seals in the burner hood.
3. Install the gas-air mixture unit.
4. Tighten the screws in a cross-wise pattern until the
burner flange fits closely and uniformly onto the mat-
ing surfaces.
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Tightening torque: 7 Nm, if a torque spanner is
available
5. Install the flue pipe.
6. Install the air intake pipe.
Installation and maintenance instructions ecoFIT sustain 0020230529_06
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