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24. RESISTANCE SENSOR VALUES
Inlet Water Sensor
100K Sensor Resistance Values
Temperature ºF (ºC)
32 (0)
41 (5)
50 (10)
59 (15)
68 (20)
77 (25)
86 (30)
95 (35)
104 (40)
113 (45)
122 (50)
100KOhm sensors are used for water temperature
measurement. These sensors are dual thermistors
in a single sensor housing. The control uses both
sensor readings in operating the unit. If the control
measures temperatures on these thermistors which are
approximately 3°F (1.6°C) apart, the control will shut off
the compressor and show "In Sensor Fault".
The message will be cleared and operation resume when
thermistors are within 2°F (1.1°C) of each other. The sensor
has a measurement error of less than +/- 0.5°F (0.3°C)
between 36°F and 110°F (2.2°C and 43°C) temperatures.
The control displays 100K sensor temperatures to 0.1°F
or 0.1°C resolution. The water temperature used for
thermostat decisions is the average of the 2 thermistors.
42
APPROVED
Resistance (Ω)
325500
253950
199040
157150
129440
100000
80570
65310
53260
43680
36020
Table F.
Temperature-Resistance Sensor Values
UNCONTROLLED DOCUMENT IF PRINTED
Water Outlet, Ambient, Coil and solar sensors
10K Sensor Resistance Values
Temperature ºF (ºC)
32 (0)
41 (5)
50 (10)
59 (15)
68 (20)
77 (25)
86 (30)
95 (35)
104 (40)
113 (45)
122 (50)
10KOhm sensors are used for the Outlet water
temperature, Ambient Air Temperature sensor, the Coil
Temperature sensor. Additionally, the control board Solar
sensor terminal is designed for a 10KOhm Temperature
sensor (field-supplied when necessary). The sensor
has a measurement error of less than +/- 0.5°F (0.3°C)
between 36°F and 110°F (2.2°C and 43°C) temperatures.
The control displays 10K sensor temperatures to 0.1°F or
0.1°C resolution.
Resistance (Ω)
32550
25340
19870
15700
12490
10000
8059
6535
5330
4372
3605
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