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Inspection and maintenance
Condens 7000 WP – 6721841195 (2022/01)
36
10.16 Replacing components
10.16.1 Replacement interval for components
The following components must be replaced after expiry of the specified
service life.
Table 18 Replacement interval for each component
Document replacement of components in the maintenance protocol
( § 15.7, p. 50).
10.16.2 Inserting the igniter
NOTICE
Damage to the appliance by applying an excessively high torque
when tightening the screws.
The threaded bolts of the ignition unit are mounted in an aluminium heat
exchanger. Using a graphite seal ensures tightness when tightening the
threaded bolts hand-tight (using hand tools).
Tighten both threaded bolts of the igniter (3Nm).
Take the replacement interval of the air/gas ratio control valve into
account.
Replace the igniter, depending on the service life ( Tab. 18, p.
36).
Switch off the appliance.
Undo both threaded bolts [1] of the igniter.
Remove igniter [3] and seal [2].
Fig. 45 Inserting the igniter
Detach connections from the igniter.
Clean the contact surface on the heat exchanger.
Position the new seal and igniter.
Tighten both threaded bolts of the igniter (3 Nm).
Mount the plug of the igniter.
Start up the boiler.
Check the flue gas tightness of the removed parts.
Carry out a check by measuring the ionisation current ( § 8.8, p.
24).
10.16.3 Replacing the flue gas temperature sensor
The flue gas temperature sensor is equipped with a bayonet connection.
Switch off the appliance.
Turn the flue gas temperature sensor anticlockwise by a quarter turn.
Take the flue gas temperature sensor out of the flue pipe.
Detach the plug from the flue gas temperature sensor.
Fit the new O-ring on the new flue gas temperature sensor before
inserting it.
Connect the plug at the new sensor.
Insert the flue gas temperature sensor with the cam [1] pointing to
the right in the flue pipe.
Turn the flue gas temperature sensor clockwise by a quarter turn.
Replace according to specification, depending on what occurs
first.
Service life Burner
runtime
Burner starts
Component [Year] [Hours] [Number]
Gaskets and O-rings Remove gaskets and always replace O-rings.
Ignition and flame
sense electrode
2 4000 25,000
Burner gasket 2 4000 --
Gasket of condensate
catch pan
2 4000 --
Air/gas ratio control
valve
10 -- 500,000
Gas hose 10 20,000 --1)
1) When replacing the air/gas ratio control valve it is advisable also to replace the
gas hose.
0010034708-002
1
2
3
3 Nm
36


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