Wiring Specifications; Mounting Location - Carrier SPS Installation Manual

Outdoor Air Temperature sensor
Thermistor Resistance vs. Temperature Values for Outdoor Air
Temp (F)
-40
-31
-22
-13
-4
5
14
23
32
41
50
59
68
77
86
95
104
113
122
131
140
149
158

Wiring specifications

Cable from sensor to controller:
Maximum length:

Mounting location

For applications with an economizer, mount the sensor immediately upstream from the outdoor air damper
where it will accurately sense the temperature of the outdoor air entering the mixing box.
For applications without an economizer, mount the sensor in the outdoor air duct near the outdoor air intake
or on the northern exterior of the building.
Do not mount the sensor:
•
In direct sunlight
•
Near the exhaust from air-handling units or compressors
•
Near leakage drafts of indoor air
•
Near shrubbery or trees
•
Under direct water runoff
24
Temperature Sensor
10K Type II (CP/MCI)
Temp (C) Resistance (Ohms)
-40
-35
-30
-25
-20
-15
-10
-5
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
If <100 ft (30.5 meters)
If >100 ft (30.5 meters)
500 feet (152 meters)
335,651
242,195
176,683
130,243
96,974
72,895
55,298
42,315
32,651
25,395
19.903
15,714
12,494
10,000
8,056
6,530
5,325
4,367
3,601
2,985
2,487
2,082
1,752
22 AWG, unshielded
22 AWG, shielded
Carrier Sensors