Nibe ACS 45 - Page 52

EXTERNAL BLOCKING, PASSIVE COOLING
(OPTIONAL)
A contact (NO) can be connected to AA5-X2:13-14 to
allow blocking of passive cooling operation. When the
contact closes, passive cooling is blocked.
EXTERNAL BLOCKING, ACTIVE COOLING
(OPTIONAL)
A contact (NO) can be connected to AA5-X2:15-16 to
allow blocking of active cooling operation. When the
contact closes, active cooling is blocked.
24 20212223 1516171819 1314
AA5-X2
External
External blocking
B A
A: Passive cooling
B: Active cooling
BT75 BT64BT57
ACS 45
Caution
The relay outputs on the accessory board can
have a max load of 2 A (230 V) in total.
CONNECTION OF THE CIRCULATION PUMP,
HEATING DUMP (GP20)
Connect the circulation pump (GP20) to AA5-X9:8 (230
V), AA5-X9:7 (N) and earth (PE).
1
2
3
4
5
6
7
8
9
L
N
PE
ACS 45
External
GP20
AA5-X9
CONNECTION OF REVERSING VALVE
MOTOR (QN12)
Connect the reversing valve motor (QN12) to AA5-X9:2
(operation), AA5-X9:1 (N) and X1:4 (L).
1
2
3
4
3
2
1
4
External
AA5-X9
X1
QN12
Control
L
N
ACS 45
CONNECTION OF THE SHUNT VALVE
MOTOR (QN18)
Connect the shunt motor (QN18) to AA5-X9:6 (230 V,
open), AA5-X9:5 (N) and AA5-X9:4 (230 V, close).
1
2
3
4
5
6
7
8
9
QN18
External
AA5-X9
Open
Close
N
SH -
SH +
ACS 45
ACS 45 | GB52