Vaillant ecoMAX 665, Руководство по установке и обслуживанию

Страница: 29 / 40

29
Installation and maintenance manual ecoMAX 665 / 0020020159_03
7.2.1 Servicing the compact thermal module
Removing the compact thermal module
The compact thermal module consists of the speed-con-
trolled fan, the gas fitting, the mixer tube and the burn-
er with flange. These four components make up the as-
sembly that is the compact thermal module. Proceed as
follows to dismount it: (see fig. 7.1)
1
9 10
2
4
3
5
6
7
8
11
Fig. 7.1 Dismounting/Mounting the compact thermal module
d Danger!
There is danger of being injured or scalded at
the compact thermal module and at all compo-
nents carrying water. Only work on the compo-
nents once they have cooled down.
The mixer tube (7) between gas control unit
and burner may not be opened. It can only be
guaranteed that this component is gas-tight
after it has been inspected at the factory.
• Cut off the gas supply to the appliance.
• Lower the electronics box.
• Undo the fastening screw of the air intake pipe (3) and
lift the air intake pipe forward (2); remove the air in-
take pipe from the intake socket.
• Pull the two plugs of the ignition und grounding lines
off the ignition electrode (6).
• Undo the gas supply line (10) on the underside of the
electronic gas valve (fig. 7.1).
• Pull off the cable (8) at the fan motor (coupling), the
PWM signal cable beneath the fan (9) and the cable
for the gas fitting (11).
• Undo the six nuts (4).
a Caution!
Under no circumstances may the compact ther-
mal module be suspended from the flexible ap-
pliance gas pipe.
• Pull the entire compact thermal module (5) off the in-
tegral condensation heat exchanger (1).
Mounting the compact thermal module
d Danger!
The seal (1) and silicate cord (2) on the com-
pact thermal module (fig. 7.2) (SP no. 180904)
must be replaced every time the thermo compact
module is removed. The burner flange insulation
(3) on the compact thermal module (SP no.
180913) must not show any signs of damage;
if it does, it must also be replaced.
1
1
2
2
3
Fig. 7.2 Checking seals and burner flange insulation
• Put the compact thermal module (5) onto the heat
exchanger (1) (fig. 7.1).
• Tighten the six nuts (4) evenly and crosswise.
• Put the air intake tube (2, fig. 7.1) onto the intake
socket and tighten the screw (3).
• Connect the gas supply line (10) with a new seal to the
gas fitting. Use a suitable open-end spanner to do so.
• Connect the two plugs of the ignition and the earth
connection to the ignition electrode (6).
• Put back on the cable (8) at the fan motor (coupling),
the PWM signal cable beneath the fan (9) and the
cable for the gas fitting (11).
• Open the gas isolation valve to the boiler.
d Danger!
Check the gas connection (10) for leaks with
leak spray.
Inspection and maintenance 7