Checking The Burner; Checking The Ignition Electrode; 11.10 Cleaning The Condensate Siphon; 11.11 Installing The Gas-Air Mixture Unit - Vaillant ecoTEC plus Installation And Maintenance Instructions Manual

12 Decommissioning the product

11.8

Checking the burner

▶
Check the surface of the burner for damage. If you see
any damage, replace the burner.
11.9

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.

11.10 Cleaning the condensate siphon

2
A
1
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 lower section of the siphon with water.
4. Reinsert the float (3).
Note
Check whether the float is present in the
condensate siphon.
5. Clip the lower section of the siphon (1) into the upper
section of the siphon (2).
24
5
B
3

11.11 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.

11.12 Draining the product

1. Close the service valves of the product.
2. Start check programme P.06.
3. Open the drain valves.
4. Make sure that the air vent cap on the internal pump is
open so that the product can be drained fully.
11.13 Completing inspection and maintenance
work
1. Check the gas connection pressure (gas flow pressure).
(→ Page 17)
2. Check the CO₂ content. (→ Page 22)

11.14 Checking the product for leak-tightness

▶
Check that the product is leak-tight. (→ Page 19)
12 Decommissioning the product
▶
Switch off the product.
▶
Disconnect the product from the power mains.
▶
Close the gas isolator cock.
▶
Close the cold water stop valve.

13 Customer service

To ensure regular servicing, it is strongly recommended
that arrangements are made for a Maintenance Agreement.
Please contact Vaillant Service Solutions for further details:
Telephone: 0330 100 3461
Installation and maintenance instructions ecoTEC plus 0020238195_01