Carrier 33CSPREMLK Thermistor Resistance vs Temperature, Outdoor Air Temperature Sensor

Table 3 — 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

1	2	3	4	5	6	RED(+)
					WHT(GND)		CCN COM
						BLK(-)
			SEN
	SW1
					BRN (GND)		SENSOR WIRING
					BLU (SPT)

Fig. 3 — Space Temperature Sensor

Typical Wiring (33ZCT55SPT)

1	2	3	4	5	6	RED(+)
					WHT(GND)		CCN COM
						BLK(-)
			SEN		SET
	SW1					BLK
						(T56)
					BRN (GND)		SENSOR WIRING
					BLU (SPT)
							JUMPER
							TERMINALS
							AS SHOWN

Cool Warm

Fig. 4 — Space Temperature Sensor

Typical Wiring (33ZCT56SPT)

SUPPLY AIR TEMPERATURE (SAT) SENSOR INSTAL- LATION — The 33ZCSENSAT supply air temperature sensor is required for controller operation. The sensor consists of a thermistor encased within a stainless steel probe. The SAT sensor probe is 6-in. nominal length with 114 in. of unshielded, 2-conductor 18 AWG twisted-pair cables. The sensor tempera- ture range is –40 to 245 F with a nominal resistance of 10,000 ohms at 77 F. The sensor measures accuracy of ±0.36 F. The SAT sensor is supplied with a gasket and 2 self-drilling mounting screws.

NOTE: The sensor must be mounted in the discharge of the unit, downstream of the cooling coil and heat exchanger. Be sure the probe tip does not come in contact with any of the unit surfaces. See Fig. 11 for mounting location.

Do not run sensor or relay wires in the same conduit or race- way with Class 1 AC service wiring. Do not abrade, cut, or nick the outer jacket of the cable. Do not pull or draw cable with a force that may harm the physical or electrical properties. Avoid splices in any control wiring.

Perform the following steps to connect the SAT sensor to the PremierLink™ controller:

1.Locate the opening in the control box. Pass the sensor probe through the hole.

2.Drill or punch a 1/2-in. hole in the supply air duct.

3.Use two field-supplied, self-drilling screws to secure the sensor probe to the duct.

4.Connect the sensor leads to the PremierLink controller’s wiring harness J6-3,4 board at the terminals labeled SAT (ORN) and GND (BRN).

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