48TC

Table 15 – Thermistor Resistance vs Temperature Values for Space Temperature Sensor, Supply Air Temperature Sensor, and Outdoor Air Temperature Sensor

TEMP

TEMP

RESISTANCE

(C)

(F)

(Ohms)

---40

---40

335,651

---35

---31

242,195

 

 

 

---30

---22

176,683

---25

---13

130,243

---20

---4

96,974

 

 

 

---15

5

72,895

---10

14

55,298

 

 

 

---5

23

42,315

 

 

 

0

32

32,651

5

41

25,395

 

 

 

10

50

19,903

15

59

15,714

20

68

12,494

 

 

 

25

77

10,000

30

86

8,056

35

95

6,530

 

 

 

40

104

5,325

45

113

4,367

 

 

 

50

122

3,601

 

 

 

55

131

2,985

60

140

2,487

 

 

 

65

149

2,082

 

 

 

70

158

1,752

NOTE: The sensor must be mounted in the discharge airstream downstream of the cooling coil and any heating devices. Be sure the probe tip does not come in contact with any of the unit’s heater surfaces.

Outdoor Air Temperature (OAT) Sensor — The OAT is factory-mounted in the EconoMi$er 2 (FIOP or accessory). It is a nominal 10k ohm thermistor attached to an eyelet mounting ring. See Table 15 for temperature-resistance characteristic.

EconoMi$er 2 — The PremierLink control is used with EconoMi$er 2 (option or accessory) for outdoor air management. The damper position is controlled directly by the PremierLink control; EconoMi$er 2 has no internal logic device.

Outdoor air management functions can be enhanced with field-installation of these accessory control devices:

Enthalpy control (outdoor air or differential sensors) Space CO2 sensor

Outdoor air CO2 sensor

Refer to Table 16 for accessory part numbers.

Field connections — Field connections for accessory sensor and input devices are made at the 16-pole terminal block (TB1) located on the control box bottom shelf in front of the PremierLink control. Some input devices also require a 24-vac signal source; connect at LCTB terminal R at “THERMOSTAT” connection strip for this signal source. See connections figures on following pages for field connection locations (and for continued connections at the PremierLink board inputs).

Table 17 provides a summary of field connections for units equipped with Space Sensor. Table 18 provides a summary of field connections for units equipped with Space Thermostat.

Space Sensors - The PremierLink controller is factory-shipped configured for Space Sensor Mode. A Carrier T-55 or T-56 space sensor must be used. T-55 space temperature sensor provides a signal of space temperature to the PremierLink control T-56 provides same space temperature signal plus it allows for adjustment of space temperature setpoints from the face of the sensor by the occupants. See Table 15 for temperature versus resistance characteristic on the space sensors.

Connect T-55 - See Fig. 43 for typical T-55 internal connections. Connect the T-55 SEN terminals to TB1 terminals 1 and 3 (see Fig. 44).

1

2

3

4

5

6

RED(+)

 

 

 

 

 

 

WHT(GND)

CCN COM

 

 

 

 

 

 

BLK(-)

 

 

 

 

 

 

 

 

 

 

SEN

 

 

 

 

 

SW1

 

 

 

 

 

 

 

 

 

 

 

BRN (GND)

SENSOR WIRING

 

 

 

 

 

BLU (SPT)

 

C08201

Fig. 43 - T-55 Space Temperature Sensor Wiring

TB1PL

SEN 1 J6-7

SEN 3 J6-6

C08212

Fig. 44 - PremierLink T-55 Sensor

36

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Image 36
Carrier 48TCA04---A12 appendix Space Temperature Sensor Wiring
Page 35 Page 37

48TCA04---A12 specifications

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