Cleaning The Heat Exchanger; Checking The Burner; Checking The Ignition Electrode; Cleaning The Condensate Trap - Vaillant ecoFIT sustain 615 Installation And Maintenance Instructions Manual

11 Inspection and maintenance
6
D
A
9. Remove the gas-air mixture unit (6).
7
7
8
10. Remove the burner seals (7) and the burner (8).
11. Check the burner and the heat exchanger for damage
and dirt.
12. If necessary, clean or replace the components accord-
ing to the following sections.
13. Install the two new burner seals.
11.6

Cleaning the heat exchanger

1
1. Protect the folded down electronics box against sprayed
water.
2. Clean the ribs of the heat exchanger (1) with water.
◁
The water runs out into the condensate tray.
26
B
C
Installation and maintenance instructions ecoFIT sustain 0020277252_00
11.7

Checking the burner

1. Search the surface of the burner for possible damage. If
you see any damage, replace the burner.
2. Install the two new burner seals.
11.8

Checking the ignition electrode

3 4
2
1
1. Disconnect the connection (2) and the earthing cable
(1).
2. Remove the fixing screws (3).
3. Carefully remove the electrode from the combustion
chamber.
4. Check that the electrode ends (4) are undamaged.
5. Check the electrode distance.
–
Clearance for the ignition electrodes: 3.5 ... 4.5 mm
6. Make sure that the seal (5) is free from damage.
▽
If necessary, replace the seal.
11.9

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).
5
2
B
A
3
1