Vaillant ECOTEC PLUS VU 80 User Manual

Replacing components
64 ecoTEC plus installation and maintenance instructions 0020134823_01
15
> On the VU GB 806/5-5 only: Use the three nuts to
secure the burner and the bracket for the insulation pro-
tection plate. Tightening torque: 4Nm
> On the VU GB 1006/5-5 and VU GB 1206/5-5 only:
First, use two nuts to secure the burner. Tightening
torque: 4Nm
> On the VU GB 1006/5-5 and VU GB 1206/5-5 only:
Use the four remaining nuts to secure the burner and
the bracket for the insulation protection plate. Tighten-
ing torque: 4Nm
> When installing the nuts, ensure that the openings in the
insulation protection plate for ignition and monitoring
electrodes lie on top of the corresponding bolts in the
burner door.
> Install the insulating mat. Ensure that the insulating mat
lies against the burner door.
> Install the insulation protection plate by turning the bay-
onet fitting until it clicks into place.
> Install the ignition and monitoring electrodes. Use new
seals for this. Tightening torque: 2.8Nm
> Install the gas-air mixture unit (¬section 13.5.6).
> Check that the product functions correctly and check the
leak-tightness (¬section 13.5.9).
15.5 Replacing insulating mats
If the safety cut-out on the burner door has been triggered,
the insulating mat between the burner door and burner
room may be damaged.
> Check and replace the insulating mat.
To replace the insulating mat, proceed in the same way as
when removing the burner (¬section15.4). It is not neces-
sary to remove the burner.
15.6 Replacing the fan
> Remove the gas-air mixture unit (¬section13.5.1).
> Remove the burner (¬section15.4).
1
15.4 Replacing the fan
> Unscrew the four screws (1) from the fan.
> Install a new fan and burner in the same position as
before.
15.7 Replacing the heat exchanger
> Drain the boiler (¬section13.2.2).
> Remove the gas-air mixture unit (¬section13.5.1).
> Unscrew the flow and return line in the front area of the
underside of the boiler.
1
15.5 Loosen the clamps on the flow and return pipes
> Loosen the clamps (1) on the sealing collars of the flow
and return pipes in the base area.

Vaillant ECOTEC PLUS VU 80 Specifications

General

Brand	Vaillant
Model	ECOTEC PLUS VU 80
Category	Boiler
Language	English