Possible selection for AUX inputs
Temperature sensor
Temperature sensor can be connected to F1345.
Available options are:
• boiler (BT52) (shown if shunt-controlled additional heat
is selected in menu 5.2.4 or if shunt-controlled addi-
tional 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 when the cooling function is activated in
menu 5.2.4).
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.
• 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).
• 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
switched off.
External activation of functions
An external switch function can be connected to F1345
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”
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.
– climate system 1 to 8
The value for the change is set in menu 1.9.2, "ex-
ternal adjustment".
• activation of one of four fan speeds.
(Can be selected if ventilation accessory is activated.)
The following five options are available:
– 1-4 is normally open (NO)
– 1 is normally closed (NC)
The fan speed is activated during the time the switch
is closed. Normal speed is resumed when the switch
is opened again.
• SG ready
Caution
This function can only be used in mains net-
works that support the "SG Ready" standard.
"SG Ready" requires two AUX inputs.
“SG Ready” is a smart form of tariff control, which
allows your electricity supplier to affect the indoor,
hot water and/or pool temperatures (if applicable) or
simply block the additional heat and/or compressor in
F1345 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).
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.
– Low price mode (A: Open, B: Closed)
"SG Ready" is active. The system focuses on costs
savings and can for example exploit a low tariff from
the electricity supplier or over-capacity from any own
power source (effect on the system can be adjusted
in the menu 4.1.5).
– Overcapacity mode (A: Closed, B: Closed)
"SG Ready" is active. The system is permitted to run
at full capacity at over capacity (very low price) with
the electricity supplier (effect on the system is set-
table in menu 4.1.5).
(A = SG Ready A and B = SG Ready B )
External blocking of functions
An external switch function can be connected to F1345
for blocking various functions. The switch must be po-
tential-free and a closed switch results in blocking.
NIBE F1345Chapter 5 | Electrical connections32
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