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14.12 Replacing the heat exchanger
> Detach the clamps (2, ¬ fig. 14.12) and (3, ¬ fig. 14.12)
from the flow connection and the return connection.
> Detach the flow connection from the heat exchanger.
> Detach the return connection from the heat exchanger.
> Remove two bolts (1, ¬ fig. 14.12) from each of the two
brackets of the heat exchanger.
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14.13 Heat exchanger brackets
> Disconnect the plug connection (2, ¬ fig. 14.13) of the
thermal fuse in the heat exchanger.
> Remove the bottom three bolts (3, ¬ fig. 14.13) from the
rear part of the heat exchanger bracket.
> Swivel the bracket around the top bolt (1, ¬ fig. 14.13) to
one side.
> Pull the heat exchanger downwards and to the right, and
remove it from the boiler.
Installation and maintenance instructions ecoTEC plus 0020134833_01
Caution.
b
Risk of damage to the boiler.
Mineral oil-based lubricants may damage
the seals. The seals must therefore not be
lubricated.
> Only use water or commercially available
soft soap, if necessary, to assist with the
installation.
i
With the new heat exchanger, ensure that you
use the cable with the coding resistor and the
correct plug.
> Install the new heat exchanger in reverse order.
> Replace the seals.
> Insert the flow and return connections into the heat
exchanger as far as they will go.
i
Make sure that the brackets are seated correctly
on the flow and return connections.
> Reinstall the compact thermal module.
(¬ section 12.4.6).
> Fill and purge the boiler and, if necessary, the heating
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installation (¬ section 10.7).
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Replacing components
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