Viessmann BW 352.B027, Installation And Service Instructions Manual

Page: 48 / 84

48
Terminals No. in
dia-
gram Function Explanation
600XD2
1: 24 VDC
2: Signal (digital)
2
Start command, stage 1 External N/O contact
Potential 24 VDC from heat pump
Closed: Active
600XD3
1: 24 VDC
2: Signal (digital)
2
Start command, stage 2 External N/O contact
Potential 24 VDC from heat pump
Closed: Active
600XD4
1: 24 VDC
2: Signal (digital)
2
Start command, stage 3 External N/O contact
Potential 24 VDC from heat pump
Closed: Active
600XD5
1: 24 VDC
2: Signal (digital)
i-P
Enable heating water buffer
cylinder External N/O contact
Potential 24 VDC from heat pump
Closed: Active
600XD6
1: 24 VDC
2: Signal (digital)
i-Q
Enable coolant buffer cylin-
der External N/O contact
Potential 24 VDC from heat pump
Closed: Active
600XD7
1: 24 VDC
2: Signal (digital)
i-W
Enable DHW cylinder External N/O contact
Potential 24 VDC from heat pump
Closed: Active
601XD1
1: 24 VDC
2: Signal (digital)
wP
Operating message, exter-
nal heat generator External N/O contact
Potential 24 VDC from heat pump
Closed: Active
601XD2
1: 24 VDC
2: Signal (digital)
wP
Fault message, external
heat generator External N/O contact
Potential 24 VDC from heat pump
Closed: Active
610XD2
+1: Signal 4-20 mA
-1: GND
PE: Shield connection i-E Set temperature, heating
water buffer cylinder External signal 4 to 20 mA
0 to 100 °C
610XD4
+1: Signal 4-20 mA
-1: GND
PE: Shield connection i-R Set temperature, coolant
buffer cylinder External signal 4 to 20 mA
0 to 50 °C
620XD2
+1: Signal 0-10 V
-1: GND
PE: Shield connection
wP
Set default value, external
heat generator Signal 0 to 10 V
630XD1
1: External potential
2: Signal (digital)
2
Collective message, priority
1
Fault
Heat pump Floating N/O contact:
Closed: Standard mode
Open:
Fault
Connection values:
■
Max. voltage: 250 V~
■
Max. switching current: 5 A (AC1)
630XD2
1: External potential
2: Signal (digital)
2
Collective message, priority
2
Warning
Heat pump Floating N/O contact:
Closed: Standard mode
Open:
Fault
Connection values:
■
Max. voltage: 250 V~
■
Max. switching current: 5 A (AC1)
Installation sequence
Electrical connections
(cont.)
5855865
Installation