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<Table of thermistor characteristics>
Thermistor (piping temperature detection,
room temperature detection)
Table of thermistor resistance
Thermistor Ro = 15kΩ±3%
B constant = 3480kΩ±2%
=15kΩ ± 3%
Thermistor R
0
Fixed number of B=3480kΩ ± 2%
Rt=15exp { 3480(
0˚C
32˚F
15kΩ
10˚C
50˚F
9.6kΩ
20˚C
68˚F
6.3kΩ
25˚C
77˚F
5.2kΩ
30˚C
86˚F
4.3kΩ
40˚C
104˚F
3.0kΩ
Linear expansion valve
Operation summary of the linear expansion valve.
• Linear expansion valve open/close through stepping motor after receiving the pulse signal from the indoor controller board.
• Valve position can be changed in proportion to the number of pulse signal.
<Connection between the indoor controller board and the linear expasion valve>
Linear expansion valve
4
M
6
2
5
1
3
Red
White
Orange
13
1
1
) }
273+t
273
Blue
ø4
Brown
ø3
Yellow
ø2
ø1
< Thermistor for lower temperature >
50
40
30
20
10
0
-20
-10
0
10
-4
14
32
50
Temperature
Controller board
DC12V
6
Brown
5
Red
4
Blue
3
Orange
2
Yellow
1
White
Connector(CN60)
20
30
40
50
(˚C)
68
86
104 122
[˚F]
Drive circuit
ø4
ø3
ø2
ø1
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