Nibe ACS 45, Installer Manual

Page: 25 / 92

TEMPERATURE SENSOR, COOLING/HEATING
(ROOM SENSOR FOR COOLING,
(EB100-BT74)
An extra temperature sensor (room sensor for cooling)
can be connected to the heat pump in order to determ-
ine better when it is time to switch between heating
and cooling operation.
To connect BT74 see the respective product's IHB
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.
24 23 22 21 20 19 18 17 16 15 14 13
AA25
External
AA5-X2
External blocking
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 23 22 21 20 19 18 17 16 15 14 13
AA25
External
AA5-X2
External blocking
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 (EQ1-GP10)
Connect the circulation pump (GP10) to AA5-X9:8 (230
V), AA5-X9:7 (N) and earth (PE). In the case of a heating
dump to the collector, place GP14 on the same terminal
blocks as GP10. In the case of greater power, an auxili-
ary relay may be needed.
L
N
PE
4
1
2
1
2
3
4
5
6
7
8
9
ACS 45 External
GP10
AA5-X9
AA25-X1
CONNECTION OF REVERSING VALVE
MOTOR (EQ1-QN12)
Connect the reversing valve motor (QN12) to AA5-X9:2
(operation), AA5-X9:1 (N) and X1:4 (L).
4
1
2
1
2
4
3
ACS 45
External
Control
N
L
QN12
AA5-X9
AA25-X1
CONNECTION OF COOLING SHUNT
(EQ1-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
25 ACS 45 S-serien | GB
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