Vaillant ECOTEC PLUS VU 80 User Manual

Inspection and maintenance
54 ecoTEC plus installation and maintenance instructions 0020134823_01
13
8
9
10
11
13
5
6
7
12
11
8
10
12
5
6
7
9
13
806/5-5
1006/5-5
1206/5-5
4
4
13.12 Installing the gas-air mixture unit
> Connect the gas-air mixture unit (5) to the heat
exchanger (7).
> Tighten the screws (6) in a cross-wise pattern until the
burner door fits closely and uniformly onto the mating
surfaces. Tightening torque: 10 Nm
> Connect the plugs of the ignition lines and the ground
connection to the ignition electrode (9) on the ignition
transformer.
> Connect the plug of the ionisation line to the ionisation
electrode (11) and connect the plug of the ground con-
nection to the earthing lug.
> Connect the plug of the safety cut-out to the upper
safety cut-out (8).
> Connect the plugs (12 and 13) to the fan motor.
> Connect the plug (10) to the gas valve.
> Connect the gas pipe (4) with a new seal to the gas
valve.
Torque (for the VU GB 806/5-5 only): 2Nm
Torque (for the VU GB 1006/5-5 and VU GB 1206/5-5
only): 2.8Nm
> Open the gas isolator cock on the boiler.
a
Danger!
Risk of poisoning and fire caused by
escaping gas!
Gas can escape through leaks.
> Check the gas tightness at the gas con-
nection using leak detection spray.
For the VUGB806/5-5 only: Installing the air intake pipe
2
1
13.13 Installing the air intake pipe (Only for VUGB806/5-5)
> Check that the sealing ring in the air intake pipe (2) is
positioned correctly in the seal seat.
> Place the air intake pipe back onto the intake nozzle.
> Secure the air intake pipe with the clip (1) on the intake
nozzle.
For all units:
> Close the electronics box.
> Re-establish the connection to the power mains.
> Open the service valves in the heating flow and in the
heating return.
> If required, refill the boiler with water to a pressure of
between the minimum and the maximum values.
13.5.7 Checking the gas connection pressure
(gasflow pressure)
> Check the gas connection pressure (¬section9.6.3).
13.5.8 Checking the CO
2
content
> Check the CO
2
content (section 13.1.3).

Vaillant ECOTEC PLUS VU 80 Specifications

General

Brand	Vaillant
Model	ECOTEC PLUS VU 80
Category	Boiler
Language	English