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Thermistors
Thermistors
Thermistors provide temperature feedback to the
main board to maintain proper room temperature
and operating conditions of the sealed system.
On heat pump models (AZ65), thermistors also
provide outdoor air temperature and outdoor
coil temperature in order for the main board to
operate the Zoneline by the most efficient means.
Thermistors
: All Zoneline models have two
indoor thermistors which are attached to the
indoor coil.
The indoor air thermistor is mounted on the front
of the coil to sample the incoming room air.
The indoor coil thermistor is mounted on the right
side of the coil in a copper well to sample the coil
temperature.
Indoor Thermistor Resistance (ohms)
All Zoneline heat-pump models have two indoor
thermistors and two outdoor thermistors.
°F
Air
Coil
10
28030
28030
30
15340
15340
32
14570
14570
50
8850
8850
70
5300
5300
90
3280
3280
Thermistors Indoor
Thermistors Outdoor
Outdoor Thermistors Resistance (ohms)
°F
AIR
COIL
10
63260
94900
30
34620
51940
32
32860
49330
50
19970
29960
70
11950
17930
90
7320
10970
One outdoor thermistor is attached to the outdoor
coil and the other outdoor thermistor is set into
the base assembly, enabling it to monitor outdoor
air temperature.
