44
Terminals
No. in
dia-
gram
Function
Explanation
440XD7
1: External potential
2: Signal (digital)
w-E
Operating message, cool-
ing, heating circuit 2
Floating N/O contact:
Closed: Operation
Connection values:
■
Max. voltage: 250 V~
■
Max. switching current: 5 A (AC1)
441XD1
1: Valve OPEN
2: Valve CLOSED
3: 24 VDC
4: 0 VDC
PE: Protective conductor
e-E
3-way diverter valve, heat-
ing/cooling, heating circuit
3
Connection values:
■
Voltage: 24 VDC
■
Max. switching current: 5 A
441XD7
1: External potential
2: Signal (digital)
e-E
Operating message, cool-
ing, heating circuit 3
Floating N/O contact:
Closed: Operation
Connection values:
■
Max. voltage: 250 V~
■
Max. switching current: 5 A (AC1)
442XD1
1: Valve OPEN
2: Valve CLOSED
3: 24 VDC
4: 0 VDC
PE: Protective conductor
u-E
3-way diverter valve, heat-
ing/cooling, heating circuit
4
Connection values:
■
Voltage: 24 VDC
■
Max. switching current: 5 A
442XD7
1: External potential
2: Signal (digital)
u-E
Operating message, cool-
ing, heating circuit 4
Floating N/O contact:
Closed: Operation
Connection values:
■
Max. voltage: 250 V~
■
Max. switching current: 5 A (AC1)
460XD1
1: 24 VDC
2: 0 VDC
3: Set value 0-10 V
4: GND
PE: Shield connection
iT
3-way mixer, low tempera-
ture maintenance/frost pro-
tection
Connection values:
■
Voltage: 24 VDC
■
Signal 0 to 10 V
460XD5
1: 24 VDC
2: 0 VDC
3: Set value 0-10 V
4: GND
PE: Shield connection
z-P
3-way mixer, secondary
high temperature mainte-
nance
Connection values:
■
Voltage: 24 VDC
■
Signal 0 to 10 V
461XD1
1: 24 VDC
2: 0 VDC
3: Set value 0-10 V
4: GND
PE: Shield connection
r-O
3-way mixer, residual heat,
heat exchanger, brine
Connection values:
■
Voltage: 24 VDC
■
Signal 0 to 10 V
461XD5
1: 24 VDC
2: 0 VDC
3: Set value 0-10 V
4: GND
PE: Shield connection
wR
3-way mixer, main flow,
heating circuits
Connection values:
■
Voltage: 24 VDC
■
Signal 0 to 10 V
Installation sequence
Electrical connections
(cont.)
5855865
Installation
Summary of Contents for BW 352.B027
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