41
CONTROL SYSTEM
Power supply
230 Vac (+10% / -15%)
50 Hz (+6% / -6%)
max 0,5 VA
Communication
wireless BSB bus
frequency 868 MHz
Safety class (EN 60730)
III
Degree of protection (EN 60529)
IP 20
Operating room temperature (not condensing)
0°C ... 50°C
Storing room temperature
-20°C ... 65°C
Power supply
2 alkaline batteries 1,5 V type AAA (LR03)
Communication
wireless BSB bus
frequency 868 MHz
Safety class (EN 60730)
III
Degree of protection (EN 60529)
IP 20
Operating room temperature (not condensing)
0°C ... 50°C
Storing room temperature
-20°C ... 30°C
Outdoor temperature sensor cable length
max 5m
Wireless repeater
Wireless adaptor for outdoor temperature sensor
Sensors features
The temperature sensors used in the hydraulic circuit are type NTC
10K (10 k
Ω
at 25°C).
The outdoor air sensor is type NTC 1K (1 k
Ω
at 25°C).
When the sensor is at the temperature of 25°C the electrical resi-
stance measured at the sensor ends is 1 kW for the NTC 1K sensor
and 10 k
Ω
for the NTC 10K sensors.
The thermistor of these sensors has a negative temperature coef-
ficient : the electrical resistance value decreases when the tempe-
rature increases.
In order to verify if a sensor is faulty or interrupted, check the corre-
spondence between the resistance value in k
Ω
and the temperature
of the sensor in °C according to the table.
For a reliable check it is not necessary to control each single value,
but some sample values are enough. If the instrument shows an
infinite resistance the sensor is interrupted.
NTC 1K
NTC 10K
Temperature
[°C]
Resistance
[kΩ]
Resistance
[kΩ]
-20
7,578
96,360
-15
5,861
75,502
-10
4,574
55,047
-5
3,6,00
42,158
0
2,857
32,555
5
2,284
25,339
10
1,840
19,873
15
1,492
15,699
20
1,218
12,488
25
1,000
10,000
30
0,827
8,059
35
0,687
6,535
40
0,575
5,330
45
0,483
4,372
50
0,407
3,605
55
-
2,989
60
-
2,49
65
-
2,084
70
-
1,753
75
-
1,481
