GB
3.5
Electrical connection
3.5.1
Electrical circuit diagram
DANGER
Danger of fatal injury due to electric shock
Voltage-carrying units and exposed connection cables may cause electric shocks and serious accidents.
➢ Only trained electricians may work on electrical connections.
➢ Make sure that there is no voltage on the unit before laying the electrical connections.
Alarm
Item
Designation
B1
Thermostat
SK
Fault signal contact
X90-
Connecting clamp
X97
F1
Internal fuse
Only units with a rated operating voltage of 400V / 460V can be optionally connected to another mains voltage.
Reconnection is made via the supply line on the primary side of the transformer.
Operating Manual PWT 6402 230V / 400V 086100107b © Pfannenberg GmbH
230V
Alarm
400V
Item
Designation
M1
Fan
X40
Ground terminal contact
Y1
Solenoid valve
Item
Designation
S1
Float switch
X50
Plug contact
T1
Transformer
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