0020253094_05 ecoTEC sustain Installation and maintenance instructions
37
2
1
3
5.
Unscrew the retaining screw
(1)
and remove the air
intake pipe
(2)
from the intake stub.
6.
Unscrew the union nut from the gas valve assembly
(3)
.
1
8
5
4
3
7
6
2
7.
Remove the ignition line plug
(3)
and the earth wire plug
(4)
from the ignition electrode.
8.
Remove the plugs
(1)
and
(8)
from the fan motor.
9.
Remove the plug
(2)
from the gas valve assembly.
10. Unscrew the four nuts
(7)
.
11. Remove the entire compact thermal module
(5)
from
the heat exchanger
(6)
.
12. Check the burner and the heat exchanger for damage
and dirt.
13. If necessary, clean or replace the components accord-
ing to the following sections.
14. Fit a new burner flange seal.
15. Check the insulating mat on the burner flange and on
the back panel of the heat exchanger. If you notice any
signs of damage, replace the relevant insulating mat.
12.8
Cleaning the heat exchanger
1.
Protect the open electronics box from spraying water.
1
3
4
2
2.
Do not undo the four nuts on the threaded pins
(1)
, oth-
erwise the tightness of the burner during set-up cannot
be guaranteed.
3.
Clean the spiral immersion heater
(3)
of the heat ex-
changer
(4)
using water or, if required, vinegar (up to a
maximum acid content of 5%). Allow the vinegar to act
on the heat exchanger for 20 minutes.
4.
Rinse away any loose dirt with a sharp jet of water or
use a plastic brush. Do not point the jet of water dir-
ectly at the insulating mat
(2)
on the rear of the heat ex-
changer.
◁
The water flows out of the heat exchanger through
the condensate siphon.
12.9
Checking the burner
1
2
3
1.
Check the surface of the burner
(1)
for damage. If any
damage is found, replace the burner.
2.
Fit a new burner flange seal
(3)
.
3.
Check the insulating mat
(2)
on the burner flange. If you
discover any signs of damage, replace the insulating
mat.
Summary of Contents for ecoTEC sustain 24
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