7
4.2 Wiring diagram
Fig. 4
Note:
• If no external on/off switch is connected, the con-
nection across terminals 7 and 8 should be main-
tained.
• If the 0-10 V input is used (terminals 11 and 12),
there must be a connection across terminals
7 and 9 (the input for the min. curve must be
closed).
• All cables used must be heat-resistant up to at
least +85°C.
• All cables used must be installed in accordance
with EN 60 204-1.
Concerning demands on signal wires and signal
transmitters, see section 10. Technical data.
A connection example can be found on page 255.
10987654
321
L1L3
1211
L2
DC 0-10 V
AYB
546 987101112
NC NO
C
213
L1
L3
L2
Signal output
Mains connection
Bus signal
Start/stop
Max. curve
Analog 0-10 V
Min. curve
(night-time duty)
input
Stop Min. Max.
Differential pres-
sure and temper-
ature sensor
Screen
TM01 1105 3399
• Wires connected to
- outputs 1 to 3,
- inputs 4 to 12,
- supply terminals and
- differential pressure and temperature
sensor
must be separated from each other and
from the supply by reinforced insulation.
• All leads connected to a terminal block
must be tied up at the terminals.
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