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
).
Содержание ECOTEC PLUS VU 80
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