Vaillant ecoCOMPACT VCC4 Series User Manual

Troubleshooting 10
0020181421_04 ecoCOMPACT Installation and maintenance instructions 39
10.10.4 Replacing the Venturi
2
1
3
1. Remove the air intake pipe.
2. Remove the plug from the sensor on the Venturi jet (2)
by pressing on the locking lug.
3. Undo the cap nut (3) for the gas connection pipe (1) on
the gas valve.
4. Remove the Venturi jet and the gas connection pipe
from the fan by turning the bayonet fitting on the Venturi
jet as far as it will go anti-clockwise and then pulling the
Venturi jet out of the fan.
1
7
6
5
4
2
3
5. Remove the gas connection pipe (1) from the Venturi
(3) by removing the clamp (4) and pulling the gas con-
nection pipe out vertically. Dispose of the seal (7).
6. Pull the burner jet (6) straight off and keep it for re-use.
7. Check whether the Venturi is free of residue at the gas
inlet side.
Applicability: Austria
Danger!
Risk of poisoning due to increased CO
values.
An incorrect gas restrictor size can lead to
increased CO values.
▶ When replacing the Venturi, ensure
that you use the correct gas restrictor
(colour coding and position of pins on
the underside of the gas restrictor).
Caution.
Risk of material damage to the product.
Lubricant can block function-related chan-
nels in the Venturi.
▶ Do not use lubricant when installing the
gas restrictor.
▶ Insert the gas restrictor for the type of gas in question
into the new Venturi (yellow: G20 natural gas, grey:
G31 liquid gas).
Note
Make sure that the colour of the gas re-
strictor matches the colour of the coding
resistor on the PCB.
When inserting the gas restrictor, ensure
that the gas restrictor is correctly aligned
using the indicated position marks on the
upper side of the Venturi and also the posi-
tioning pins (5) on the underside of the gas
restrictor.
Applicability: Belgium
Danger!
Risk of poisoning due to increased CO
values.
An incorrect gas restrictor size can lead to
increased CO values.
▶ When replacing the Venturi, ensure
that you use the correct gas restrictor
(colour coding and position of pins on
the underside of the gas restrictor).
Caution.
Risk of material damage to the product.
Lubricant can block function-related chan-
nels in the Venturi.
▶ Do not use lubricant when installing the
gas restrictor.
▶ Insert a jet for the type of gas in question into the new
Venturi (yellow: E gas).

Vaillant ecoCOMPACT VCC4 Series Specifications

General

Brand	Vaillant
Model	ecoCOMPACT VCC4 Series
Category	Boiler
Language	English