63
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
Ω
± 3%
Fixed number of B=3480K ± 2%
Rt=15exp { 3480( ) }
0
:
15k
Ω
10
:
9.6k
Ω
20
:
6.3k
Ω
25
:
5.4k
Ω
30
:
4.3k
Ω
40
:
3.0k
Ω
Thermistor for
lower temperature
1
273+t
1
273
9-6.TEST POINT DIAGRAM
9-6-1. Power board
PCA-RP2GA
PCA-RP2.5GA
PCA-RP3GA
PCA-RP4GA
PCA-RP5GA
PCA-RP6GA
CN2S
Connect to the indoor controller
board (CN2D)
(12~16V DC)
CN02
Connect to the indoor
controller board (CN03)
Between
1
and
2
0~24V DC
(Indoor/Outdoor transmission)
Between
2
and
3
220~240V AC
CN01
Connect to the Terminal Block (TB4)
(Indoor/outdoor connecting line)
Between
1
and
2
220~240V AC
Between
2
and
3
0~24V DC
(Indoor/outdoor transmission)
Fuse 4A/250V
+
–
}
}
+
–
}
+
–
OC311--3.qxp 04.5.31 1:05 PM Page 63
