Monitor
Available options are:
• external level monitor for the overflow cup (NO)
• pressure switch for climate system (NC).
• 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.
External blocking of functions
An external switch function can be connected to F730
for blocking various functions. The switch must be po-
tential-free and a closed switch results in blocking.
Caution
Blocking entails a risk of freezing.
Functions that can be blocked:
• hot water (hot water production)
• heating (blocking of heating demand)
• additional heat (additional heat is blocked)
• compressor
• tariff blocking (additional heat, compressor, heating
and hot water are disconnected)
External activation of functions
An external switch function can be connected to F730
to activate various functions. The function is activated
during the time the switch is closed.
Possible functions that can be activated:
• hot water comfort mode “temporary lux”
• hot water comfort mode “economy”
• “external adjustment”
An external contact function can be connected to F730
to change the supply temperature and the room tem-
perature.
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.
The following five options are available:
– 1-4 is normally open (NO)
– 1 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 where your
electricity supplier can affect the indoor and hot water
temperatures or simply block the additional heat and/or
the 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 connect-
ing potential-free switch functions to two inputs selec-
ted 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 )
33Chapter 5 | Electrical connectionsNIBE F730
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