Vaillant ecoMAX 665 Installation And Maintenance Manual - page 30
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Installation and maintenance manual ecoMAX 665
After cleaning, reinstall all condensate path components
(see siphon operating instructions). Make sure you fill
the cartridge with water. Fit new seals at all locations
and test the condensate path for leakage.
1
1/3
2/3
b.
c.
a.
8
3
5
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1_
0
0
10
20
0
4
ecoTEC
1
2
3
Fig. 7.5 Cleaning the siphon (2)
7.2.4 Checking the burner
The burner is maintenance-free and needs no cleaning.
The surface should be checked for damage, and the
burner replaced if necessary.
• After checking/replacing the burner, install the com-
pact thermo module as described in 7.2.1.
7.3 Draining the appliance and the system
7.3.1 Draining the appliance
• Close the appliance‘s maintenance cocks.
• Open the drain valve in the return.
• Open the air-release valve on the cylinder supply con-
nection in order for the appliance to be completely
drained.
7.3.2 Draining the entire system
• Attach a hose to the system‘s drain point.
• Bring the open end of the hose to a suitable discharge
point.
• Make sure that the boiler‘s maintenance cocks are open.
• Open the draining cock.
• Open the air-release valves on the radiators. Start
with the radiator that is highest up and then continue
downward.
• When the water has run out, close the radiators‘
exhausts and the draining cock again.
7.3.3 Cleaning the air barrel
Danger!
There is danger of being injured or scalded at all
components carrying water. Only carry out work
on these components once they have cooled
down.
• Dismount the air barrel as shown in fig. 7.6 and rinse
it with hot water.
• Remount the air barrel and make sure to use new
seals (SP no. 981272).
1.
2.
3.
Fig. 7.6 Cleaning the air barrel
7.4 Filling and bleeding the system
Proceed as described in point 5.1.2.
7.5 Checking the gas setting
Perform a gas setting check as described in chapter 5.2.
7.6 Test operation
After the maintenance work has been completed, carry
out a functional test (see chapter 5.3).
7 Inspection and maintenance