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Appendix A
A.1. Cabinet with built-in star-delta
Grundfos IO242
Pump-module
24VEXT
GND
ADI
GND
DI 4
GND
DI 3
GND
DI 2
GND
DI 1
PTC 2B
PTC 2A
MPF2
PTC 1B
GND
PTC 1A
MPF1
Fan Thermostat
CT-sensor
Power Supply
Auto Fuse
Cable duct for Auxiliary wiring
PTC
Timer
Cooling Fan
AUX
Pump#1b
2V2
2U2
Pump#1c
2W2
1W2
1V2
Pump#1a
1U2
N
L3
Mains
L2
L1
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