Nibe F1255 Installer Manual page 28

Selectable inputs on the input board for these functions
are:
AUX1
AUX2
AUX3
AUX4
AUX5
Selectable outputs are AA3:X7.
AA3-X6
The example above uses the inputs AUX1 (X6:9-10) andAUX2
(X6:11-12) on the input circuit board (AA3).
Caution
Some of the following functions can also be ac-
tivated and scheduled via menu settings.
Possible selection for AUX inputs
Temperature sensor, cooling/heating
An extra temperature sensor (BT74) can be connected
to F1255 in order to determine when it is time to switch
between heating and cooling operation.
The temperature sensor is connected to the selected in-
put (menu 5.4, the alternative is only displayed if cooling
accessory is installed, se page 51) on terminal block X6
on the input card (AA3) which is located behind the front
cover and is positioned in a suitable place in the climate
system.
Use a 2 core cable of at least 0.5 mm² cable area.
28 Chapter 5 | Electrical connections
X6:9-10
X6:11-12
X6:13-14
X6:15-16
X6:17-18
soft in/outputs 5.4
block heating
activate temp lux
not used
not used
not used
alarm output
F1255
External Externt F1245
B
A
AA3-X6
Switch for external blocking of addition and/or
compressor
Blocking for addition heat and compressor is connected
on two different AUX inputs.
If external blocking of additional heat and/or compressor
is wanted, this can be connected to terminal block X6
on the input board (AA3), which is positioned behind
the front cover.
The additional heat and/or the compressor are discon-
nected by connecting a potential-free switch function
to the input selected in menu 5.4, see page 51.
External blocking of addition and compressor can be
combined.
A closed contact results in the electrical output being
disconnected.
Contact for external tariff blocking
In those cases where external tariff blocking is used, it
can be connected to terminal block X6 on the input
board (AA3), which is positioned behind the front cover.
Tariff blocking means that the additional heat, the
compressor, the heating and hot water are blocked by
connecting a potential-free switch function to the input
selected in menu 5.4, see page 51.
Closed switch means that tariff blocking is activated.
NOTE
When tariff blocking is activated, the min. supply
9
line does not apply.
10
11
12
13 Switch for "SG ready"
14
15
NOTE
16
This function can only be used in mains net-
works that support the "SG Ready"-standard .
"SG Ready" requires two AUX inputs.
In cases where this function is required, it must be con-
nected to terminal block X6 on the input card (AA3).
"SG Ready" is a smart form of tariff control where your
electricity supplier can affect the indoor, hot water
and/or pool temperatures (if applicable) or simply block
the additional heat and/or compressor in the heat pump
at certain times of the day (can be selected in menu 4.1.5
after the function is activated). Activate the function by
connecting potential-free switch functions to two inputs
selected in menu 5.4 (SG Ready A and SG Ready B), see
page 51.
Closed or open switch means one of the following:
■
Blocking (A: Closed, B: Open)
"SG Ready" is active. The compressor in the heat pump
and additional heat is blocked like the day's tariff
blocking.
■
Normal mode (A: Open, B: Open)
"SG Ready" is not active. No effect on the system.
NIBE™ F1255