5
The earth-wire (green-yellow) of the elec-
trical supply and of any equipment con-
nected to the controller must be connected
to the terminals marked PE.
Once all wiring to the controller has been completed,
check that connections have been made to the correct
terminals and that all connections are secure.
Finally replace the cover and ensure the securing
screws are tight to prevent ingress of dirt and moisture.
VRDE, VRDT:
Additional connections (marked CL) for e.g. contacts
of an external clock for switching between the 2 select-
ed speeds/set points of the two speed-selection-switch-
es.
VRDT, VRTT:
Additional connections for the thermal contacts from
the motors (marked TK), and connections for e.g. two
thermostats (marked CC-CC and OC-OC). If CC-CC
and OC-OC are not used they must be linked together.
Terminals marked (SL,N) for external failure signal.
VRTE:
Connections for valve- or servomotor:
A valve- (close-off flap) or servomotor may be con-
nected to terminals NK and LK (marked “KLAPPE”).
A 230 V (max load 40 V A) supply is available at
these terminals, when the controller is switched on. If
connection to external devices is not used, terminals
NK and LK must not be linked together!
Note: The voltage at the terminal ”LK” will be dis-
connected, if the control switch is in the “0”-position,
or if the motor thermal switch contacts (at terminals
”TK”) open.
1. Check if the switch(es) of the controller is (are) in
”0”-position.
2. Check the main supply voltage (nominal voltage
tolerance +6%/-10%).
3. Switch on the main power supply first and then
the controller. The green light on the outside of the
enclosure will be on.
4. Check the voltage given in every switch position.
5. In case of failure check the fuse (inside of the enclo-
sure, or external).
The controller needs no specific maintenance.
The housing may be cleaned using a moist cloth it
must not be hosed down.
Disposal of this product or parts of it must be carried
out according to the following guidelines:
1. Use the local public or private waste collection
service.
2. In case such waste collection service does not exist
or cannot handle the materials used in the product
please deliver the product or any hazardous materi-
als from it to your nearest Östberg company or ser-
vice workshop.
Subject to alterations
OPERATION
MAINTENANCE
DISPOSAL
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