Nibe S1155 Installer Manual page 23

Temperature sensor, hot water top
A temperature sensor for hot water top (BT7) can be
connected to S1155 to show the water temperature at
the top of the tank (if it is possible to install a sensor at
the top of the tank).
Connect the sensor to terminal block X28:10 (or to one
of the other selectable AUX inputs) and to any input on
terminal block AA2-X29.
AA2-X28 BT7
AUX8
10
AUX7
9
AUX6
8
AUX5 7
6
AUX4
AA2-X29
Temperature sensor, external flow line
Connect temperature sensor, external supply line (BT25)
to terminal block AA2-X28:12 and to any input on termin-
al block AA2-X29.
AA2-X28
BT1 14
BT50 13
BT25 12
BT6 11
AUX8 10
AA2-X29
NIBE S1155
BT25
Room sensor
S1155 is supplied with an enclosed room sensor (BT50)
that makes it possible to display and control the room
temperature in the display on S1155.
Fit the room sensor in a neutral position where a set
temperature is required. A suitable location might be,
for example, on a free inner wall in a hall approx. 1.5 m
above the floor. It is important that the room sensor is
not obstructed from measuring the correct room tem-
perature, for example by being located in a recess,
between shelves, behind a curtain, above or close to a
heat source, in a draught from an external door or in
direct sunlight. Closed radiator thermostats can also
cause problems.
S1155 operates without room sensor, but if you want
to read the home's indoor temperature from the display
on S1155, the room sensor must be fitted. The room
sensor is connected on terminal block X28:13 and to
any input on terminal block AA2-X29.
If a room sensor is to be used to change the room
temperature in °C and/or to fine-tune the room temper-
ature, the sensor must be activated in menu 1.3 "Room
sensor settings".
If a room sensor is used in a room with underfloor
heating, it should only have an indicatory function, not
control of the room temperature.
AA2-X28
BT1 14
BT50 13
BT25 12
BT6 11
AUX8 10
AA2-X29
Caution
Changes of temperature in accommodation
take time. For example, short time periods in
combination with underfloor heating will not
give a noticeable difference in room temperat-
ure.
External energy meter
One or two energy meters (BE6, BE7) are connected to
AA2-X28:1-2 or AA2-X30:7-8.
S1155 External
GND 9
+5V 8
0-5V 7
OT+ 6
AA2-X30
4
AUX 2
3
AUX 1
2
+5V
0-5V 1
AA2-X28
Chapter 5 | Electrical connections
BT50
+5V
BE6
+5V
BE7
23