Terminal Strip For External Heat Pump Components - Viessmann BW 30 .CS Series Installation And Service Instructions Manual

Electrical connections

Terminal strip for external heat pump components

Note
See position D in diagram on page 30.
400 V~/230 V~ components
External connections
Terminals Function
12X0 Compressor 1 operating message
12X2 Compressor 2 operating message
12K8/11;14 Heat pump central fault message
Circuit protection from load fuse 5FC1 (observe the maximum total current of 16 A)
Terminals Function
13X0 Circulation pump, evaporator
Primary side
13X5 Circulation pump, condenser
Secondary side
Terminals Function
21X1 Circulation pump, groundwater
Heat yield
13X2 Pressure switch, primary circuit/frost
stat
Heat yield
(cont.)
Explanation
Floating N/O contact:
Closed: compressor 1 running
■
Open: compressor 1 not running
■
Connection values
Max. voltage: 250 V~
■
Max. switching current: 4 A (ACS1)
■
Floating N/O contact:
Closed: compressor 2 running
■
Open: compressor 2 not running
■
Connection values
Max. voltage: 250 V~
■
Max. switching current: 4 A (AC1)
■
Floating N/O contact:
Closed: no fault
■
Open: heat pump fault
■
Connection values
Max. voltage: 250 V~
■
Max. switching current: 4 A (AC1)
■
Explanation
Connection values
Max. output: 4000 W
■
Voltage:
■
400 V~/230 V~
Max. switching current: 9 A (AC3)
■
Connection values
Max. output: 4000 W
■
Voltage:
■
400 V~/230 V~
Max. switching current: 9 A (AC3)
■
Explanation
Connection values
Max. output: 4000 W
■
Voltage:
■
400 V~/230 V~
Max. switching current: 9 A (AC3)
■
Note
Fit the service switch upstream of the circulation
pump.
Insert jumper if no safety components are instal-
led.
Installation sequence
31