Carrier 50TJ016-028 specifications Physical Data, Compressor/Manufacturer

Table 1 — Physical Data

UNIT 50TJ		016		020			024	028
		208/230, 460 v	575 v
NOMINAL CAPACITY (tons)		15		18			20	25
OPERATING WEIGHT		1550		1650			1700	1850
EconoMi$er		80		80			80	80
MoistureMiser Dehumidification		40		40			40	40
Package
COMPRESSOR/MANUFACTURER				Scroll,		Copeland
Quantity...Model (Ckt 1, Ckt 2)		2...ZR94KC		1...ZR108KC,			1...ZR125KC,	1...ZR16M3,
				1...ZR94KC			1...ZR108KC	1...ZR125KC
Capacity Stages (%)
		50, 50		55, 45			55, 45	60, 40
Number of Refrigerant Circuits		2		2			2	2
Oil (oz) (Ckt 1, Ckt 2)		81, 81		106, 81			106,106	136, 106
REFRIGERANT TYPE				R-22
Expansion Device				TXV
Operating Charge (lb-oz)
Circuit 1*		10-10		15-5			16-0	20-13
Circuit 2		10-10		12-3			13-6	13- 0
CONDENSER COIL			Cross-Hatched 3/8-in. Copper Tubes, Aluminum Lanced,
Rows...Fins/in.			Aluminum Pre-Coated, or Copper Plate Fins
		2...17		3...15			3...15	4...15
Total Face Area (sq ft)		21.7		21.7			21.7	21.7
CONDENSER FAN				Propeller		Type
Nominal Cfm		10,500		10,500			14,200	14,200
Quantity...Diameter (in.)		3...22		3...22			2...30	2...30
Motor Hp...Rpm		1/2...1050		1/2...1050			1...1075	1...1075
Watts Input (Total)		1100		1100			3400	3400
EVAPORATOR COIL			Cross-Hatched 3/8-in. Copper Tubes, Aluminum Lanced or
Rows...Fins/in.				Copper Plate Fins, Face Split
		2...17		3...15			3...15	4...15
Total Face Area (sq ft)		17.5		17.5			17.5	17.5
EVAPORATOR FAN				Centrifugal		Type
Quantity...Size (in.)		2...10 x 10	2...10 x 10	2...12 x 12			2...12 x 12	2...12 x 12
Type Drive		Belt	Belt	Belt			Belt	Belt
Nominal Cfm		6000	6000	7200			8000	10,000
Motor Hp		3.7	3.0	5			7.5	10
Motor Nominal Rpm		1725	1725	1745			1745	1740
Maximum Continuous Bhp		4.25	3.45	5.90			8.7 [208/230, 575 v]	10.2 [208/230, 575 v]
							9.5 [460 v]	11.8 [380, 460 v]
Motor Frame Size
		56H	56H	184T			213T	215T
Nominal Rpm High/Low		—	—	—			—	—
Fan r/s Range	Low-Medium Static	891-1179	1159-1429	910-1095			1002-1225	1066-1283
Motor Bearing Type	High Static	1227-1550	—	1069-1287			1193-1458	1332-1550
		Ball	Ball	Ball			Ball	Ball
Maximum Allowable Rpm		1550	1550	1550			1550	1550
Motor Pulley Pitch Diameter	Low-Medium Static	3.1/4.1	4.3/5.3	4.9/5.9			5.4/6.6	4.9/5.9
Min/Max (in.)	High Static	3.7/4.7	—	4.9/5.9			5.4/6.6	4.9/5.9
Nominal Motor Shaft Diameter (in.)	Low-Medium Static	7/8	7/8	11/8			13/8	13/8
Fan Pulley Pitch Diameter (in.)		6.0	6.4	9.4			9.4	8.0
Nominal Fan Shaft Diameter (in.)	High Static	5.2	—	8.0			7.9	6.4
	Low-Medium Static	13/16	13/16	17/16			17/16	17/16
Belt, Quantity...Type...Length (in.)		1...BX...42	1...BX...45	1...BX...50			1...BX...53	2...BX...50
Pulley Center Line Distance (in.)	High Static	1...BX...42	—	1...BX...48			1...BX...50	2...BX...47
		13.5-15.5	13.5-15.5	13.3-14.8			14.6-15.4	14.6-15.4
Speed Change per Full Turn of	Low-Medium Static	48	44	37			37	36
Movable Pulley Flange (rpm)	High Static	55	—	34			44	45
Movable Pulley Maximum Full Turns
From Closed Position		6	6	6			6	6
Factory Speed		3.5	3.5	3.5			3.5	3.5
Factory Speed Setting (rpm	Low-Medium Static	1035	1296	1002			1120	1182
Fan Shaft Diameter at Pulley (in.)	High Static	1389	—	1178			1328	1470
		13/16	13/16	17/16			17/16	17/16
HIGH-PRESSURE SWITCH (psig)
Cutout				426
Reset (Auto)				320
LOW-PRESSURE SWITCH (psig)
Cutout				27
Reset (Auto)				44
FREEZE PROTECTION THERMOSTAT (F)					±
Opens				30			5
Closes				45	±		5
OUTDOOR-AIR INLET SCREENS				Cleanable
Quantity...Size (in.)				2...20 x 25 x 1
				1...20 x 20 x 1
RETURN-AIR FILTERS				Throwaway†
Quantity...Size (in.)				4...20 x 20 x 2
				4...16 x 20 x 2
POWER EXHAUST		1/2 Hp, 208/230-460 v Motor Direct Drive, Propeller-Fan (Factory-Wired for 460 v)
LEGEND			†The 50TJ028 units requires 2-in. industrial-grade filters capable of handling
Bhp — Brake Horsepower			face velocities of up to 625 ft/min (such as American Air Filter no. 5700 or
			equivalent).
TXV — Thermostatic Expansion Valve
			NOTE: The 50TJ016-028 units have a low-pressure switch (standard) located
*Circuit 1 uses the lower portion of condenser coil and lower portion of evap-
			on the suction side.
orator coils; and Circuit 2 uses the upper portion of both coils.

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