Mitsubishi Electric PUHZ-W85VAA Service Manual page 32

Low temperature thermistor
• Thermistor <Inlet water> (TH34)
Thermistor R0 = 15 k" ± 2.5%
B constant = 3450 ± 2%
1
1
=15exp{3450( 273+t – 273 )}
R
t
0: 15 k" 30:
10: 9.6 k" 40:
20: 6.3 k"
25: 5.2 k"
OCH681
4.3 k"
3.0 k"
50
40
30
20
10
0
-20 -10 0
Temperature(:)
32
10 20 30 40 50