Nibe SMO 40 - Page 26

TEMPERATURE SENSOR, HOT WATER
CHARGING
The temperature sensor, hot water charging (BT6) is
placed in the submerged tube on the water heater.
Connect the sensor to terminal block X6:7 and X6:8 on
the input board (AA3). Use a twin core cable with a cable
area of at least 0.5 mm².
Hot water charging is activated in menu 5.2 or in the
start guide.
SMO Externt
6
7
8
9
10
11
12
1
3
AA3-X6
ExternalSMO40
BT6
L N 1 1 0 2 3 4PE
1 2 3 4
LEK
AA3-X6
TEMPERATURE SENSOR, HOT WATER TOP
A temperature sensor for hot water top (BT7) can be
connected to SMO 40 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 X6:15 and X6:16
on the input board (AA3). Use a twin core cable with a
cable area of at least 0.5 mm².
SMO Externt
11
12
13
14
15
16
17
1
8
AA3-X6
ExternalSMO40
BT7
L N 1 1 0 2 3 4PE
1 2 3 4
LEK
AA3-X6
TEMPERATURE SENSOR, EXTERNAL FLOW
LINE
Connect temperature sensor, external supply line (BT25)
(required for additional heat after reversing valve
(QN10)), to terminal block X6:5 and X6:6 on the input
board (AA3). Use a twin core cable with a cable area of
at least 0.5 mm².
SMO Externt
4
5
6
7
8
9
10
1
1
AA3-X6
ExternalSMO40
BT25
L N 1 1 0 2 3 4PE
1 2 3 4
LEK
AA3-X6
TEMPERATURE SENSOR, EXTERNAL
RETURN LINE
Connect temperature sensor, external return line (BT71)
to terminal block X6:17 and X6:18 on the input board
(AA3). Use a twin core cable with a cable area of at least
0.5 mm².
SMO Externt
11
12
13
14
15
16
17
1
8
AA3-X6
ExternalSMO40
BT71
L N 1 1 0 2 3 4PE
1 2 3 4
LEK
AA3-X6
Caution
For docking that requires connection of other
sensors, see "Possible selection for AUX in-
puts" on page 30.
NIBE SMO 40Chapter 5 | Electrical connections26