Inspection and maintenance 11
0020261188_00 ecoTEC plus Installation and maintenance instructions
37
4.
Fill the lower section of the siphon with water up to 10
mm below the upper edge of the condensate discharge
pipe.
5.
Re-insert the float
(3)
.
Note
Check that the float is present in the con-
densate siphon.
6.
Clip the lower section of the siphon
(1)
into the upper
section of the siphon
(2)
.
11.3.9 Cleaning the filter in the dynamic air
separation system
1
3
2
4
1.
Remove the clips
(1)
and
(3)
.
2.
Loosen the upper section of the pipe
(2)
.
3.
Then turn and loosen the lower section of the pipe
(4)
.
1
2
3
4.
Remove the screws
(1)
.
5.
Remove the housing
(2)
from the air separation system.
6.
Clean the filter
(3)
using hot water.
▽
If the filter is damaged, replace it.
7.
Insert the filter into the air separation system.
8.
Replace the seal on the air separation system's hous-
ing.
9.
Reattach the housing for the air separation system and
use the screws to secure it in place.
–
Tightening torque: 7.5 Nm
10. Reinsert the pipe and insert the clip.
11.3.10 Checking the pre-charge pressure of the
external expansion vessel
1.
Depressurise the heating installation.
2.
Measure the pre-charge pressure of the expansion ves-
sel at the vessel valve.
▽
Expansion vessel pre-charge pressure
– ≥
0.075 MPa (
≥
0.750 bar)
▶
Fill the expansion vessel with air at a lower pre-
charge pressure (in relation to the static height
of the heating installation).
3.
If water escapes from the valve of the expansion ves-
sel, replace the expansion vessel.
4.
Fill the heating installation. (
→
Page 21)
11.3.11 Completing cleaning and inspection work
1.
Tilt the electronics box upwards.
2.
Install the front casing. (
→
Page 9)
3.
Establish the power supply if this has not yet been
done.
4.
Open the gas stopcock.
5.
Switch the product back on if this has not yet been
done. (
→
Page 21)
6.
Open all service valves and the gas stopcock if this has
not yet been done.
11.4
Draining the product
A
B
C
1.
Close the service valves of the product.
2.
Remove the cap
(A)
from the drain cock.
3.
Connect a drain hose
(B)
to the connection on the drain
cock.
4.
Open the drain cock
(C)
.
5.
Use the air separator on the heating flow connection so
that the product can be completely drained.
