External blocking
A contact (NO) can be connected to AA5-X2:21-22 to
block the accessory. When the contact closes, the ac-
cessory is blocked.
24 23 22 21 20 19 18 17 16 15 14 13
AA25
External
External blocking
AA5-X2
External blocking, hot water circulation pump
(QZ1-GP11)
A contact (NO) can be connected to AA5-X2:15-16 to
block the hot water circulation pump. When the contact
closes, the hot water circulation pump 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 2A (230V) in total.
CONNECTION OF THE HOT WATER
CIRCULATION PUMP (QZ1-GP11)
Connect the circulation pump (GP11) to AA5-X9:8 (230V),
AA5-X9:7 (N) and X1:3 (PE).
1
2
3
4
5
6
7
8
9
AA5-X9
2
1
1
M
AA25-X1
External
AA25
GP11
CONNECTION OF THE MIXER VALVE
(QZ1-FQ3)
Connect the mixing valve motor (FQ3) to AA5-X9:6
(230V, open), AA5-X9:5 (N) and AA5-X9:4 (230V, close).
1
2
3
4
5
6
7
8
9
AA25
External
AA5-X9
FQ3
Close
N
Open
CONNECTION OF AUXILIARY RELAY FOR
ADDITIONAL HEAT IN TANK
Connect the auxiliary relay for switching the additional
heat on and off to AA5-X9:1 (N) and AA5-X9:2 (230V).
L
N
A2
A1
External auxiliary relay
Additional
Hot water
1
2
3
4
AA5-X9
Extra Hot Water
External auxiliary relay
AA25 External
DIP SWITCH
The DIP switch (S2) on the accessory board (AA5) must
be set as follows.
ON
1
2
3
4
5
6
7
8
65
AXC 30 F-series | GB
F