Nibe F370 Installer Manual page 30

Selectable output
A selectable output is AA3-X7.
The output is a potential-free switching relay.
AA3-X7
The picture shows the relay in the alarm position.
When switch (SF1) is in the " " or " " position the relay
is in the alarm position.
Caution
The relay outputs may be subjected to a max
load of 2 A at resistive load (230V AC).
TIP
The AXC accessory is required if more than
one function is to be connected to the AUX
output.
30 Chapter 5 | Electrical connections
Possible selection for AUX inputs
Monitor
Available options are:
• pressure switch for climate system (NC).
• alarm from external units. The alarm is connected to
the control, which means that the malfunction is
1 2 3
presented as an information message in the display.
Potential-free signal of type NO or NC.
C NO NC
External activation of functions
AA3-X7
An external switch function can be connected to F370
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"
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
• activation of one of four fan speeds.
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
"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).
The value for the change is set in menu 1.9.2, "ex-
ternal adjustment".
Caution
This function can only be used in mains net-
works that support the "SG Ready" standard.
"SG Ready" requires two AUX inputs.
NIBE F370