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Installation and maintenance instructions ecoTEC 0020029172_03
a
Caution!
Damage to gas supply!
Under no circumstance may the compact
thermal module dangle on the flexible
corrugated gas pipe.
7
2
3
1
5
6
4
Fig. 8.3 Dismounting compact thermal module
• Remove the two plugs for the ignition (
5
) and ground
connections (
6
) from the ignition electrode.
• Remove the plugs (
3
) at the fan motor and the
cable (
4
) at the gas valve.
• Undo the five nuts (
7
).
• Pull off the entire compact thermal module (
2
) from
the heat exchanger (
1
).
• After dismounting check the burner and heat
exchanger for damage and soiling – clean the
components if necessary as described below.
• Check the insulating layer at the burner door. If signs
of damage are apparent it must be renewed (Item
No. 210734).
8.3.2 Cleaning the heat exchanger
a
Caution!
Danger of short-circuiting and irrepairable
damage to the PCB and fan!
Protect the downfolded electronic box and also
the fan against splash water.
2
3
4
1
Fig. 8.4 Cleaning the heat exchanger
• Dismount the compact thermal module as described
under 8.3.1.
• Clean the heating coil (
2
) of the heat exchanger (
3
)
using commercially-available essence of vinegar. Flush
with water. The water flows out of the heat exchanger
through the condensate siphon. You can also clean
the condensate trap via the opening (
4
).
• Allow the cleaning agent to take effect for
approximately 20 minutes then rinse off the loose dirt
with a powerful water jet. Avoid pointing the water jet
directly at the insulating mat (
1
) at the rear of the
heat exchanger.
You can also use a plastic brush to carry out the
cleaning.
8.3.3 Checking
the
burner
3
1
2
Fig. 8.5 Checking the burner
The burner (
2
) is maintenance-free and needs no
cleaning.
• Check the surface of the burner for damage, replace
the burner if necessary.
• After checking/repairing the burner install the com-
pact thermal module as described in Chapter 8.3.4.
Inspection and maintenance 8
Содержание ecoTEC VU 466/4
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