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VLR 70 CU - InstaLLatIon
Installation
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3.1.3 Wiring diagram with 2 appliances
1
2
3
4
1
2
3
4
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R1
DC +24 V
R2
DC -24 V
R3
Fan +24 V
R4
Fan -24 V
R5
Alarm
R6
Fan 1
R7
Fan 2
3.1.4 Activation of fan stages by means of an external signal
You can use sensors with potential-free N/O or changeover con-
tacts. Only one of the versions shown should be connected.
Cross-ventilation
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Differential mode
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5
L1
LED+
L2
LED-
L3
Switch
L4
Operating mode
L5
Fan stage 0/I
L6
Fan stage II
L7
Fan stage III
3.1.5 Connecting the programming unit to the control unit
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2
3
4
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2
3
4
1
2
3
4
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4
1
2
1 Back of the programming unit
2 Adaptor board