Nibe F1255 Installation Manual page 28

CONNECTING EXTERNAL ENERGY METER
NOTE
Connection of external energy meter requires
version 35 or later on input board (AA3) as well
as "display version" 7312 or later.
One or two energy meters (BE6, BE7) are connected to
terminal block X22 and/or X23 on input board (AA3).
AA3-X22/23
Activate the energy meter(s) in menu 5.2.4 and then set
the desired value (energy per pulse) in menu 5.3.21.
NIBE UPLINK
Connect the network connected cable (straight, Cat.5e
UTP) with RJ45-contact (male) to RJ45 contact (female)
on the rear of the heat pump.
EXTERNAL CONNECTION OPTIONS
F1255 has software-controlled AUX inputs and outputs
on the input board (AA3), for connecting the external
switch function or sensor. This means that when an
external switch function (the switch must be potential-
free) or sensor is connected to one of six special con-
nections, this function must be selected for the correct
connection in menu 5.4.
soft in/outputs 5.4
activate temp lux
For certain functions, accessories may be required.
28 Chapter 5 | Electrical connections
Extern energimätare ProduktNamn
External F1255
+5V
1
2
3
AA3-X22/23
block heating
not used
not used
not used
alarm output
Selectable inputs
Selectable inputs on the input board for these functions
are:
AUX1
AUX2
AUX3
AUX4
AUX5
AA3-X6
The example above uses the inputs AUX1 (X6:9-10) and AUX2 (X6:11-
12) on the input board (AA3).
Selectable output
A selectable output is AA3-X7.
TIP
Some of the following functions can also be
activated and scheduled via menu settings.
POSSIBLE SELECTION FOR AUX INPUTS
Temperature sensor
Temperature sensor can be connected to F1255.
Available options are:
• external supply line (BT25) (control of temperature to
the heating system)
• cooling/heating (BT74), determines when it is time to
switch between cooling and heating mode (can be
selected when the cooling function is activated in
menu 5.2.4).
• return temperature (BT71)
Monitor
Available options are:
• alarm from external units. The alarm is connected to
the control, which means that the malfunction is
presented as an information message in the display.
Potential-free signal of type NO or NC.
• level (accessory NV10)/, pressure/flow monitor for the
brine (NC).
• pressure switch for climate system (NC).
AA3-X6:9-10
AA3-X6:11-12
AA3-X6:13-14
AA3-X6:15-16
AA3-X6:17-18
F1255
External
Externt F1245
9
B
10
11
A
12
13
14
15
16
AA3-X6
NIBE F1255