16
AW HT
GB 05/2009
OUTSIDE AIR TEMPERATURE SENSOR (BT2)
Installation instructions
The outside air temperature sensor must be installed outside of the home in a reference position to correctly measure the tem-
perature, without being affected by sunlight, flue gas, near air outlets, doors and windows.
The outside air temperature sensor must be located on a perimeter wall facing north-north/west, minimum 2.5 metres from the
ground or maximum half way up the height of the home.
Installation procedure:
1. Remove the cover from the probe
using a special tool
2. Identify the correct installation position
for the probe
3. Fasten the probe to the wall at the cor-
rect height (see the drawings)
4. Make the electrical connections, see
the wiring diagram, and attach the top
of the probe.
Electrical connection:
Dimensions:
H
H
2
/
1
N
N-W
3
mi
n
2
,5
m
1
2
4
M
B9
Terminal block
Outside air
temperature sensor
Terminal block
Controller A1
49,7
91
,6
79,8
3
8,5
5,5
14,1
25 24,5
49,5
9,5
4
5,
5
6
Technical specifications
Probe
NTC 1000Ω at 25 °C
Index of protection
IP54
Cover colour
RAL 9003
Base colour
RAL 7001
Storage -20...65
°C
Transport -20...70
°C
Operation 0...50°C
(non-condensing)
Measurement
-50…70°C
DOMESTIC HOT WATER STORAGE TEMPERATURE SENSOR (BT1)
The domestic hot water temperature inside the storage cylinder is measured using sensor BT1, connected to terminals M and
BX1.
