Carrier Comprehensive Product Data and Manuals for Units 48AJ, 48AK, and 48AW

Table 1A — Physical Data — 48AJ,AK,AW,AY Units

UNIT 48AJ,AK,AW,AY					020D/E						025D/E						027D/E					030D/E
NOMINAL CAPACITY (tons)			20						25						27						30
BASE UNIT OPERATING WEIGHT (lb)											See Operating Weights Table 2.
COMPRESSOR
Quantity...Type (Ckt 1 , Ckt 2)		1...06D328, 1...06D818								2...06D328						2...06D328				1...06D537, 1…06D328
Number of Refrigerant Circuits			2						2						2						2
Oil (oz) (Ckt 1 , Ckt 2)			115, 88								115 ea.						115 ea.					115 ea.
REFRIGERANT TYPE													R-22
Operating Charge (lb-oz)
Circuit 1			25-0						25-0						29-0						27-0
Circuit 2			31-0						25-0						28-0						29-0
CONDENSER COIL *					Cross-Hatched 3/8" Copper Tubes, Aluminum Lanced, Aluminum Pre-Coated, or Copper Plate Fins
Quantity			1						1						1						1
Rows...Fins/in.			4...15						4...15						4...15						4...15
Total Face Area (sq ft)			33.3						33.3						33.3						33.3
CONDENSER FAN													Propeller Type
Nominal Cfm			13,420						13,420						13,420						13,420
Quantity...Diameter (in.)			2...30						2...30						2...30						2...30
Motor Hp			1						1						1						1
EVAPORATOR COIL									Cross-Hatched Copper Tubes, Aluminum Plate Fins
Tube Size (in.)			3/8						3/8						3/8						3/8
Rows...Fins/in.			4...15						4...15						4...15						4... 5
Total Face Area (sq ft)			31.7						31.7						34.7						34.7
EVAPORATOR FAN													Centrifugal Type
Quantity...Size (in.)				2...20 X 15					2... 20 X 15						2... 20 X 15						2... 20 X 15
Type Drive					Belt						Belt						Belt					Belt
Nominal Cfm			8,000						10,000						11,000						12,000
Motor Hp		5			10		15	7.5			10		15	10			15		20	10		15		20
Motor Frame Size		184T			215T		254T	213T			215T		254T	215T			254T		256T	215T		254T		256T
Motor Bearing Type					Ball						Ball						Ball					Ball
Maximum Allowable Rpm			1200						1200						1200						1200
Motor Pulley Pitch Diameter		4.9			4.4		5.7	5.4			6.1		5.5	4.4			4.9		5.9	4.4		5.7		5.9
Nominal Motor Shaft Diameter (in.)		11/8			13/8		13/8	13/8			13/8		15/8	13/8			15/8		15/8	13/8		15/8		15/8
Fan Pulley Pitch Diameter (in.)		12.4			8.6		9.1	12.4			11.1		8.7	9.4			8.1		8.7	9.0		9.1		8.7
Nominal Fan Shaft Diameter (in.)					115/16						115/16						115/16					115/16
Belt Quantity		1			2		2	1			1		2	2			2		2	2		2		2
Belt Type		BX56			BX50		5VX530	BX56			5VX590		5VX570	BX50			5VX500		5VX530	BX50		5VX530		5VX530
Belt Length (in.)		56			63		53	56			59		57	50			50		53	50		53		53
Pulley Center Line Distance (in.)		16.0-18.7			15.6-18.4	15.0-17.9		15.6-18.4			15.6-18.4	15.0-17.9		15.6-18.4			15.0-17.9	15.0-17.9		15.6-18.4		15.0-17.9	15.0-17.9
Factory Speed Setting (rpm)		717			924		1096	773			962		1106	848			1059		1187	884		1096		1187
FURNACE SECTION
Rollout Switch Cutout
Temp (F) †			225						225						225						225
Burner Orifice Diameter	(in. ...drill size)
Natural Gas	Std		.111...34						.111...34						.111...34						.111...34
Liquid Propane	Alt		.089...43						.089...43						.089...43						.089...43
Thermostat Heat Anticipator Setting
Stage 1 (amps)			0.1						0.1						0.1						0.1
Stage 2 (amps)			0.1						0.1						0.1						0.1
Gas Input (Btuh)	Stage 1		262,500/394,000						262,500/394,000						262,500/394,000						262,500/394,000
	Stage 2		350,000/525,000						350,000/525,000						350,000/525,000						350,000/525,000
Efficiency (Steady State) (%)			82						82						82						82
Temperature Rise Range			15-45/35-65						15-45/35-65						15-45/35-65						15-45/35-65
Manifold Pressure (in. wg)
Natural Gas	Std		3.5						3.5						3.5						3.5
Liquid Propane	Alt		3.5						3.5						3.5						3.5
Gas Valve Quantity			2						2						2						2
HIGH-PRESSURE SWITCH (psig)
Cutout			426						426						426						426
Reset (Auto.)			320						320						320						320
LOW-PRESSURE SWITCH (psig)
Cutout			27						27						27						27
Reset (Auto.)			67						67						67						67
RETURN-AIR FILTERS
Quantity...Size (in.)			10...20 x 24 x 2						10...20 x 24 x 2						10...20 x 24 x 2						10...20 x 24 x 2
OUTDOOR AIR FILTERS					8...16 x 25						8...16 x 25						8...16 x 25					8...16 x 25
Quantity...Size (in.)					4...20 x 25						4...20 x 25						4..20 x 25					4...20 x 25

		LEGEND
Al	—	Aluminum
Bhp	—	Brake Horsepower
Cu	—	Copper

*Sizes 020-030: Circuit 1 uses the lower portion of condenser coil, Circuit 2 uses the upper portion.

Sizes 035-050: Circuit 1 uses the left condenser coil, Circuit 2 the right. All units have intertwined evaporator coils.

†Rollout switch is manual reset.

NOTE: High heat is for 48AJ,AW only.

21