22
<Thermistor Characteristic graph>
• Room temperature thermistor (TH1)
• Pipe temperature thermistor/liquid (TH2)
• Condenser/evaporator temperature
thermistor (TH5)
Thermistor R
0
=15k
Ω
± 3%
Fixed number of B=3480 ± 2%
Rt=15exp { 3480( ) }
0
:
15k
Ω
10
:
9.6k
Ω
20
:
6.3k
Ω
25
:
5.2k
Ω
30
:
4.3k
Ω
40
:
3.0k
Ω
Thermistor R
0
=6.0k
Ω
±5%
Fixed number of B=3390 ± 2%
Rt=6exp { 3390( ) }
0
:
6.0k
Ω
10
:
3.9k
Ω
20
:
2.6k
Ω
25
:
2.2k
Ω
30
:
1.8k
Ω
40
:
1.3k
Ω
60
:
0.6k
Ω
Thermistor for
lower temperature
1
273+t
1
273
1
273+t
1
273
Thermistor for
drain sensor
0
10
20
30
40
50
-20 -10 0 10 20 30 40 50
< Thermistor for lower temperature >
Temperature (
)
Resistance (k
)
-20
0
20
40
60
80
< Thermistor for drain sensor >
Temperature (
)
0
1
2
3
4
5
6
7
8
9
10
Resistance (k
)
