Manuals / Carrier / Household Appliance / Air Conditioner

Carrier 48EW, 48EY024-068, 48AW, 48AY020-060, 48EK, 48AK, 48EJ Base Unit Dimensions — 48AJ,AK035-050

Models: 48EJ 48AJ 48AK 48EK 48AY020-060 48AW 48EY024-068 48EW

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Fig. 6 — Base Unit Dimensions — 48AJ,AK035-050

	NOTES:					OPERATING			CORNER WEIGHT (lbs)
	1.	Weights include economizer (standard).			UNIT SIZE		A	B
						WEIGHT*	(ft-in.)	(ft-in.)	1	2	3	4
	2.	Center of Gravity.				(lbs)

					48AJ/AK (Low Heat) 035	6004	7-811/16	3-107/8	1380	1209	1595	1820
	3.	Do not locate adjacent units with flue discharge facing economizer
		inlet.			48AJ (High Heat) 035	6164	7-101/8	3-113/16	1447	1251	1607	1859
		Min Clearances to be:			48AJ/AK (Low Heat) 040	6514	7-55/16	3-107/8	1442	1264	1779	2030
		Adjacent Units: 15′-0″[4572].			48AJ (High Heat) 040	6674	7-613/16	3-113/16	1512	1307	1787	2068
		Top of Units: No Overhang.
		Condenser Coil: 4′-0″[1219].			48AJ/AK (Low Heat) 050	6725	7-311/16	3-101/2	1449	1294	1878	2104
		Economizer Side: 6′-0″[1829].			48AJ (High Heat) 050	6885	7-53/16	3-1013/16	1519	1337	1886	2142
		′	″	[1219].
		Heat Side: 4 -0
		Filter Access Side: 10′-0″[3048]. (For removal of evaporator coil.)
	4.	For smaller service and operational clearances contact Carrier Appli-				OPERATING
	5.	cation Engineering Department.			UNIT SIZE		A (mm)	B (mm)	CORNER WEIGHT (kg)
		Bottom ducts designed to be attached to accessory roof curb. If unit is				WEIGHT*			1	2	3	4
		mounted on dunnage, it is recommended the ducts must be supported				(kg)
		by cross braces as done on accessory roof curb.			48AJ/AK (Low Heat) 035	2723	2355	1191	626	548	723	826
	6.	Dimensions are in inches [mm].
					48AJ (High Heat) 035	2796	2390	1199	656	567	729	843

					48AJ/AK (Low Heat) 040	2955	2268	1191	654	573	807	921
					48AJ (High Heat) 040	3027	2306	1199	686	593	811	938
					48AJ/AK (Low Heat) 050	3050	2228	1181	657	587	852	954
					48AJ (High Heat) 050	3123	2266	1189	689	607	856	972

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Fig. 6 — Base Unit Dimensions — 48AJ,AK035-050

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Carrier 48EW, 48EY024-068, 48AW, 48AY020-060, 48EK, 48AK, 48EJ specifications Base Unit Dimensions — 48AJ,AK035-050

Contents

CONTENTS SAFETY CONSIDERATIONSINSTALLATION Step 1 — Provide Unit Support Step 11 — Position Power Exhaust/BarometricStep 4 — Make Unit Duct Connections Page Page Page NOTES Fig. 5 - Base Unit Dimensions - 48AJ,AK020-030 Fig. 6 — Base Unit Dimensions — 48AJ,AK035-050 Fig. 7 — Base Unit Dimensions — 48AJ,AK060 Fig. 8 — Base Unit Dimensions — 48AW,AY020-030 Fig. 9 — Base Unit Dimensions — 48AW,AY035-050 Fig. 10 — Base Unit Dimensions — 48W,AY060 Fig. 11 — Base Unit Dimensions — 48EJ,EK024-034 Fig. 12 — Base Unit Dimensions — 48EJ,EK038-048 Fig. 13 — Base Unit Dimensions — 48EJ,EK054-068 Fig. 14 — Base Unit Dimensions — 48EW,EY024-034 Fig. 15 — Base Unit Dimensions — 48EW,EY038-048 Fig. 16 — Base Unit Dimensions — 48EW,EY054-068 Fig. 17 — Rigging Information Fig. 17 — Rigging Information cont Table 1A — Physical Data — 48AJ,AK,AW,AY Units UNIT 48AJ,AK,AW,AY Table 1B — Physical Data — 48EJ,EK,EW,EY Units UNIT 48EJ,EK,EW,EY UNIT 48EJ,EK,EW,EY 48EJ,EK,EW,EY Units Table 2 — Operating Weights48AJ,AK,AW,AY Units Fig. 19 — Air Distribution — Thru-the-Side Table 3 — Evaporator Fan Motor DataFig. 18 — Air Distribution — Thru-the-Bottom Step 5 — Install Flue Hood Fig. 23 — Field Gas Piping Table 4 — 48A,E Series Staged Gas ImplementationTable 6 - Thermistor Designations Fig. 24 — Supply-AirThermistor Connections Fig. 25 — Indoor Air Quality Sensor Configuration Fig. 26 — Field Control Remote Start/StopStep 9 - Make Electrical Connections Fig. 27 — Control Board Diagram Table 7 — Electrical Data — 48AJ,AK,AW,AY Units UNIT SIZE 30.8/28.0 236.3/230.9 Table 8 — Electrical Data — 48EJ,EK,EW,EY Units 30.8 0.96 UNIT Fig. 28 - Field Power Wiring Connections LEGEND Thermostat Wiring CV Only- Install a Carrier-approvedaccessory thermostat assembly per current price pages according to the installation instructions included with the ac- cessory or these instructions. Locate the thermostat on a solid interior wall in the conditioned space to sense the average temperature LEGEND Fig. 32 — Field Control Thermostat Wiring Fig. 33 — Field Control Temperature SensorWiring CV or VAV Units Table 9 — CCN Connection Approved Shielded CablesFig. 35 — Field HIR Heat Interlock Relay Wiring Step 10 — Make Outdoor-AirInlet AdjustmentsFig. 34 - Space Temperature Averaging Wiring Right Side/Center Economizer Hood Shown Fig. 37 - Economizer Hood AssemblyFig. 36 — Adding Seal Strip to Top of Hood Sides Fig. 38 — Adding Seal Strip to Sides of Hood Top Mounting FlangeFig. 39 — Adding Seal Strip to Back of Hood Top Fig. 40 — Adding Foam Strip to Cross MemberAttached to Filter Track Assembly Filter Track AssemblyFig. 43 - Mounting Angle Without Tabs Fig. 44 — Mounting Angle With Tabs Attached toSave screws Fig. 47 - Wiring Connections for Solid-StateEnthalpy Control HH57AC077 Fig. 49 - Economizer Details CONTROLCONTROL POINT CURVEFig. 51 - Pressure Transducer Locations 48AJ,AK,AW,AY060 and 48EJ,EK,EW,EY054-06848AJ,AK,AW,AY020-030and 48EJ,EK,EW,EY024-034 Fig. 52 - Motormaster III Control Baffle DetailsFig. 53A — Motormaster III Sensor Location Fig. 53B — Motormaster III Sensor Location 48AJ,AK,AW,AY035 and 48EJ,EK,EW,EY038Fig. 53C — Motormaster III Sensor Location 48AJ,AK,AW,AY040, 050 and 48EJ,EK,EW,EY048Step 13 — Field Modifications Fig. 54 — Side Return Air ConversionSTART-UP Fig. 56 — Wiring Field-SuppliedUnloaders forConstant Volume Units Factory-InstalledJumpers Fig. 57 — Toshiba TOSVERT130-E3VFD13.Replace jumper across terminals ST and CC 13.Replace jumper across terminals R and CC LEGEND Typical Factory Wiring Optional Field WiringSee below for building pressure to signal level Table 17 — DIP Switch Configuration Table 18 — DIP Switch Factory Settings AIRFLOW AIRFLOW AIRFLOW 1.06 2.15 3.18 4.81 AIRFLOW AIRFLOW AIRFLOW AIRFLOW AIRFLOW AIRFLOW Table 33 — Motor Limitations Table 34 — Air Quality LimitsSequence of Operation Table 35 — User Defined Set Points Table 36 - Software Control Link PointsThe Time Guard function maintains a minimum off time of 5 minutes, a minimum ON time of 10 seconds, and a minimum delay before starting the second compressor of 10 seconds Fig. 59 — Heat Interlock Relay Wiring Table 37 — Staged Gas System Components Table 38 — Stage Gas System Inputs/OutputsFig. 60 — Navigator Display Table 39 — Navigator Display Menu StructureOperation and Controlling Factors Fig. 61 — Space Temperature Reset WiringTable 40 — Occupied Heat and Morning Warm-Up Fig. 62 - Field-SuppliedSmoke Detector Wiring Units with 2 Compressors Table 41 — Smoke Control ModesTable 42 — Cooling Capacity Staging Table, CV Fig. 63 — Door Latch SERVICEFig. 64 — Spark Gap Adjustment Fig. 65 — Typical Gas Heating Section Fig. 66 — Gas Heat Section DetailsFig. 68 — Evaporator Fan Coupling Fig. 67 — Evaporator-FanAlignment and AdjustmentLubrication Evaporator Fan Service and Replacement Belt Tension Adjustment — To adjust belt tensionEvaporator-FanMotor Replacement Condenser-FanAdjustmentGas Valve Adjustment Fig. 71 — Cooling Charging ChartFig. 72 — Cooling Charging Chart 48EJ,EK,EW,EY024-034Fig. 73 — Cooling Charging Chart Fig. 74 — Cooling Charging Chart48EJ,EK,EW,EY054-068 48AJ,AK,AW,AY020-060LEGEND for Fig. 77-83— Typical Wiring Schematics Protective DevicesTABLE 1A Fig. 78 — Typical 48EK VAV 24-VControl Circuit Fig. 79 — Typical CV 24-VControl Circuit Fig. 80 — Typical 48EK VAV 115-VControl Circuit Fig. 81 — Typical 48EJ CV 115-VControl Circuit Page Page TROUBLESHOOTING FPS — Freeze Protection Switch HPS - High-PressureSwitchLPS - Low-PressureSwitch LEGENDcompressor LPS — Low-PressureSwitch LEGEND FPS — Freeze Protection SwitchHPS — High-PressureSwitch 8-Pass LPS — Low-PressureSwitch LEGEND FPS — Freeze Protection SwitchHPS — High-PressureSwitch TXV — Thermostatic Expansion Valve LEGEND HPS — High-PressureSwitchLPS — Low-PressureSwitch HPS - High-PressureSwitch LPS — Low-PressureSwitchLEGEND TXV — Thermostatic Expansion ValveTXV — Thermostatic Expansion Valve LEGEND HPS — High-PressureSwitchLPS — Low-PressureSwitch TXV — Thermostatic Expansion Valve LEGEND HPS — High-PressureSwitchLPS — Low-PressureSwitch IGC — Integrated Gas Unit Controller Fig. 94 — IGC Control Heating and CoolingLEGEND IDM — Induced-DraftMotor Table 44 - IGC Control Board LED Alarms Table 45 — Control Board LED AlarmsPage SERVICE TRAINING CALL FOR FREE CATALOGSTART-UPCHECKLIST TEMPERATURESPRE-START-UP ELECTRICALGENERAL