48
0
10
20
30
40
50
-20 -10
0
10 20 30 40 50
< Thermistor for lower temperature >
Temperature (
:
)
Resistance (K
"
)
<Thermistor Characteristic graph>
Room temperature thermistor(TH1)
Pipe temperature thermistor(TH2)
Condenser/evaporator temperature
thermistor(TH5)
Thermistor R
0
=15k
’
± 3%
Fixed number of B=3480k
’
± 2%
Rt=15exp { 3480( ) }
0
:
15k
’
10
:
9.6k
’
20
:
6.3k
’
25
:
5.2k
’
30
:
4.3k
’
40
:
3.0k
’
Thermistor R
0
=6.0k
’
±5%
Fixed number of B=3390k
’
±2%
Rt= 6 exp { 3390( ) }
0
:
6.0k
’
10
:
3.9k
’
20
:
2.6k
’
25
:
2.2k
’
30
:
1.8k
’
40
:
1.3k
’
Thermistor for
lower temperature
1
273+t
1
273
1
273+t
1
273
-20
0
20
40
60
80
< Thermistor for drain sensor >
Temperature (
:
)
0
1
2
3
4
5
6
7
8
9
10
Resistance (K
"
)
Thermistor for
drain sensor
OC236(181A)---2.qxp 01/9/27 5:31 PM Page 48
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