Euroclima ZHK, Руководство пользователя

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Instruction Manual ZHK
96/140 V07-21.0
Electrical connection
The electrical connection of the fans must be undertaken on site, which is the full responsibility of
the customer to implement. This is extremely important because in the event of exceeding the max-
imum allowable differential pressure, the fan motors will immediately be disconnected from the power
supply until they can be restarted safely by the relevant professional. . For an example for connection
diagram, refer to
Figure 201
below.
When the differential pressure switch has been activated, the cause of the excessive pressure must
be found, repaired and eliminated before restarting.
Value to be set:
The setting of the differential pressure switch must be undertaken on site, based on the actual pres-
sure situation observed on site. The actual differential pressures must be measured at the commis-
sioning stage with the target volume flows. Measuring points, depending on the fan arrangement,
can be found in
Figure 197
to
Figure 200
. From the beginning, until reaching the target volume flow,
the maximum admissible differential pressure (according to the technical data) must not be ex-
ceeded. Based on these measured values reserves, for example, for filter pressure losses or other
additional pressure losses, must be added. This calculated pressure measurement must be adjusted
at the differential pressure switch as trigger value.
NOTICE!
It is vital that this calculated value does not exceed the maximum admissi-
ble differential pressure according to the technical data, see Figure 195.
If the maximum admissible differential pressure is not given in the tech-
nical data, EUROCLIMA must be contacted.
If EUROCLIMA supplies the differential pressure switch, then they are factory mounted. The setting,
as described above, must be executed by the customer on site at the commissioning stage. The
correct connection of the measuring hoses, according to
Figure 197
to
Figure 200
, must be ensured
before commissioning.
Important: If you have any questions or doubts regarding the correct installation, connection and
adjustment of differential pressure switches or other measures to protect against impermissible pres-
sures, please contact EUROCLIMA.
7.8 Frost protection for plate heat exchanger
At low temperatures and high air speeds, the condensate in the plate heat exchanger can freeze
and ice over.
For devices supplied by EUROCLIMA with control, this is prevented by pressure monitoring of the
plate heat exchanger and the temporary adjustment of the supply air volume flow. For devices sup-
plied by EUROCLIMA without control, appropriate measures are required to protect the plate heat
exchanger on site. For example, a temporary reduction of the supply air flow.
Figure 201:
Electrical connection scheme
K
P
M
3

L 1
L 2
L 3
N
K
K
Stop
KH
K
230 V
Start
KH
Reset
Betriebsmeldung
KH
Alarm
0 V
KH