Nibe S1255 - Distribution Boxes; Cooling Sections

Distribution boxes
UN
-X29
-X28
1 0-5V 2 +5V
3 AUX1 4 AUX2 5 AUX3 6 AUX4 7 AUX5 8 AUX6 9 AUX7
10 AUX8 11 AUX9 12 BT25
1
1
2
3
2 3 4 5 6 7 8 9
10
11
12
GND
+12V
B
A
OT+ OT−
0-5V
PWM0 PWM1
CPU
EXT COM
INT COM
ERROR
POWER
+5V
GND
BE1 BE2 BE3
K10
-X27
NO
O
NC
AUX-RELAY
13 BT50 14 BT1
-X30
FQ10-S2
FQ10
AA2
RA3
AA8
ELECTRICAL COMPONENTS
Base cardAA2
Electrical anode board
1
AA8
Temperature limiterFQ10
FQ10-S2 Reset button for temperature limiter
Choke
2
RA1
Choke
2
RA3
1
Only heat pump with enamelled vessel.
2
Only for 12 kW 3x400 V
Cooling sections
6 kW
UN
BT11
BT12
BT10
BT3
GP2
QM2 QM1
GP1
AA3
RF2
1x230V 12 kW
3x230V 12 kW
UN
BT11
BT12
AA3 BT10
BT3
GP2
QM2 QM1
GP1
RF2
3x400V 12 kW
UN
BT11
BT12
BT10
BT3
GP2
QM2 QM1
GP1
AA3
RF2
16 kW
UN
BT11
BT12 RF2
BT10AA3
BT3
GP2
QM2 QM1
GP1
11Chapter 3 | The heat pump designNIBE S1255