Electrical Connection - Helios KWL 45 BEU Notice De Montage Et D'utilisation

Installation and Operating Instructions
EN
CHAPTER 7
ELECTRICAL
CONNECTION
Controller KWL 45 BEU
Fault Cause
Abnormal noises – Grinding impeller
– Bearing damage
– Mechanical damage
KWL EC 45 no longer sup- – G3 filter and/or protection guard con-
plies the capacity taminated
– Design-inner panel is closed
– Ventilation stage not selected
– Bearing damage
– Heat accumulator contaminated
– External contact active
Controller cannot be
adjusted . LED "Operating
– Function, selection not possible,
mode" or "Ventilation
because they are not parameterised
stage" flashes when
pressing a button
– Filter change active
LED 1-5 "Operating
mode" flashing
– The operating modes are not all para-
The operating modes
meterised
cannot all be set on the
controller
7 .0

Electrical connection

m
The unit must be fully isolated from the power supply before all maintenance and installation work or before
opening the terminal compartment! The electrical connection must only be carried out by an authorised elec-
trician according to the following wiring diagrams .
In order to establish the electrical connection, observe the installation and operating instructions for the switching pow-
er supply KWL-SNU/SNH and the ventilation unit KWL EC 45!
8 9 10 11
1 2
Restoration of power supply
In case of a power failure, the system will always start in the last active ventilation stage or the last active operating mode.
Solution
Clean impeller, replace fan if necessary
Contact Helios customer services
Replace fan
Contact Helios customer services
Replace defective components
Contact Helios customer services
Check G3 filter and protection guard for conta-
mi- nation and replace G3 filter or clean protection
guard
Open design–inner panel
Increase ventilation stage
Replace fan
Contact Helios customer services
Clean (see page 10)
Check switching command external contact
Check parameterisation using software or contact
owner/Installer
Change filter and reset filter change interval
Check parameterisation using software or contact
owner/Installer
Controller – rear view
The connection terminals are located on the rear side of the controller.
Note wiring diagrams.
Important:
There must always be at least two connected KWL EC 45 units. In
supply air mode, it is necessary to determine which KWL EC 45 is ope-
rated in the starting direction Supply air and which is operated in the
starting direction Extract air. The assignment is determined by connecti-
on terminals 10 and 11.
Terminal 10 >> Starting direction Supply air
Terminal 11 >> Starting direction Extract air
13
Fig .6