EXTERNAL CONNECTION OPTIONS (AUX)
F1355 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.
block heating
activate temp lux
not used
not used
not used
alarm output
soft in/outputs 5.4
For certain functions, accessories may be required.
Selectable inputs
Selectable inputs on the input board for these functions
are:
AA3-X6:9-10AUX1
AA3-X6:11-12AUX2
AA3-X6:13-14AUX3
AA3-X6:15-16AUX4
AA3-X6:17-18AUX5
F1345
E
xternt
9 10 11 12 13 14
19 20 21 22
External
F1355
AA101-X10 AA3-X6
The example above uses the inputs AUX3 (AA3-X6:13-14) and AUX5
(AA101-X10:21-22) on the terminal block.
Selectable output
A selectable output is AA101-X9.
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 F1355. Use
a 2-core cable of at least 0.5 mm² cable area.
Available options are:
• Boiler (BT52) (only shown if shunt-controlled additional
heat is selected in menu 5.1.12)
• cooling/heating (BT74), determines when it is time to
switch between cooling and heating mode (can be
selected if cooling accessory is installed)
When several room sensors have been installed, you
can select which one of them will be controlling in
menu 1.9.5.
When BT74 has been connected and activated in
menu 5.4, no other room sensor can be selected in
menu 1.9.5.
Monitor
Available options are:
• alarm from external units. The alarm is connected to
the control, which means that the malfunction is
presented as an info-alarm 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).
• stove monitor. (A thermostat that is connected to the
chimney. When the negative pressure is too low and
the thermostat is connected, the fans in ERS (NC) are
closed.
External activation of functions
An external switch function can be connected to F1355
to activate various functions. The function is activated
during the time the switch is closed.
Possible functions that can be activated:
• forced control of brine pump
• hot water comfort mode “temporary lux”
• hot water comfort mode “economy”
• “external adjustment”
An external contact function can be connected to
F1355 to change the supply temperature and the room
temperature.
When the switch is closed, the temperature changes
in °C (if the room sensor is connected and activated).
If a room sensor is not connected or not activated,
the desired change of “temperature” (heating curve
offset) is set with the number of steps selected. The
value is adjustable between -10 and +10. External
adjustment of climate systems 2 to 8 requires ac-
cessories.
NIBE F1355Chapter 5 | Electrical connections30
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