Nibe F1255 Installer Manual page 29

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Low price mode (A: Open, B: Closed)
"SG Ready" is active. The system focuses on costs sav-
ings 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).
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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 settable in
menu 4.1.5).
(A = SG Ready A and B = SG Ready B )
Switch for +Adjust
Using +Adjust, the installation communicates with the
underfloor heating's control centre* and adjusts the heat
curve and calculated supply temperature according to
the underfloor heating system's reconnection.
Activate the climate system you want +Adjust to affect
by highlighting the function and pressing the OK button.
*Support for +Adjust required
NOTE
+Adjust must first be selected in menu 5.4 "soft
inputs/outputs".
NOTE
Circuit board AA3 in the installation must have
at least "Input version・34 and the software
version must have "display version 5539 or later
for +Adjust to work. The version can be checked
in menu 3.1 under "input version" respectively
"display version". New software can be down-
loaded for free from www.nibeuplink.com.
NOTE
In systems with both under floor heating and
radiators, NIBE ECS 40/41 should be used for
optimum operation.
Switch for external blocking of heating
In those cases where external blocking of heat is used,
it can be connected to terminal block X6 on the input
board (AA3), which is positioned behind the front cover.
Heating operation is disconnected by connecting a po-
tential-free switch function to the input selected in menu
5.4, see page 51.
51
A closed switch results in blocked heating operation.
NOTE
When heat blocking is activated, the min. supply
line does not apply.
Switch for external forced control of brine pump
In those cases external forced control of brine pump is
used, this can be connected to terminal block X6 on the
input board (AA3), which is positioned behind the front
cover.
NIBE™ F1255
The brine pump can be force controlled by connecting
a potential free switch function to the input selected in
menu 5.4, see page 51.
A closed switch means that the brine pump is active.
Contact for activation of "temporary lux"
An external switch function can be connected to F1255
for activation of the hot water function "temporary lux".
The switch must be potential-free and connected to the
selected input (menu 5.4, see page 51) on terminal block
X6 on the input board (AA3).
"temporary lux" is activated for the time that the contact
is connected.
Contact for activation of "external adjustment"
An external contact function can be connected to F1255
to change the supply temperature and the room temper-
ature.
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 activated, the desired
change of "temperature" (heating curve offset) with the
number of steps selected is set. The value is adjustable
between -10 and +10.
climate system 1
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The switch must be potential-free and connected to
the selected input (menu 5.4, see page 51) on terminal
block X6 on the input board (AA3).
The value for the change is set in menu 1.9.2, "external
adjustment".
climate system 2 to 8
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External adjustment for climate systems 2 to 8 requires
accessories (ECS 40 or ECS 41).
See the accessory's installer handbook for installation
instructions.
Contact for activation of fan speed
Caution
The external contact function functions only if
the accessory FLM is installed and activated.
An external contact function can be connected to F1255
for activation of one of the four fan speeds. The switch
must be potential free and connected to the selected
input (menu 5.4, see page 51) on terminal block X6 on
the input circuit board (AA3). When the switch closes,
the selected fan speed is activated. Normal speed is re-
sumed when the contact is opened again.
NV 10, pressure/level/flow monitor brine
If the level sensor (accessory NV10) is desired for the
brine installation it can be connected on the selected
input (menu 5.4, see page 51) on terminal block X6 on
the input circuit board (AA3).
Pressure and flow sensors can also be connected to the
input.
The input must be closed during normal operation.
Chapter 5 | Electrical connections 29