Manuals / Carrier / Household Appliance / Air Conditioner

Carrier 48EW, 48EY024-068, 48AY020-060, 48EK, 48AK, 48AJ Base Unit Dimensions — 48AW,AY020-030

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

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Fig. 8 — Base Unit Dimensions — 48AW,AY020-030

	NOTES:					OPERATING			CORNER WEIGHT (lbs)
	1. Weights include economizer (standard).				UNIT SIZE	OPERATING	A	B	CORNER WEIGHT (lbs)
					UNIT SIZE	WEIGHT*	(ft-in.)	(ft-in.)	1	2	3	4
	2.	Center of Gravity.				(lbs)	(ft-in.)	(ft-in.)
						(lbs)
					48AW/AY (Low Heat) 020	5182	6- 03/8	3-63/16	1090	1183	1514	1395
	3. Do not locate adjacent units with flue discharge facing economizer				48AW/AY (Low Heat) 020	5182	6- 03/8	3-63/16	1090	1183	1514	1395
		inlet.			48AW (High Heat) 020	5262	6- 15/16	3-611/161134		1203	1505	1419
		Min Clearances to be:			48AW/AY (Low Heat) 025	5268	5- 95/8	3-8	1111	1111	1523	1523
		Adjacent Units: 15′-0″[4572].			48AW (High Heat) 025	5348	5-101/8	3-85/16	1144	1128	1527	1548
		Top of Units: No Overhang.			48AW (High Heat) 025	5348	5-101/8	3-85/16	1144	1128	1527	1548
		Condenser Coil: 4′-0″[1219].			48AW/AY (Low Heat) 027	5365	5- 95/8	3-8	1132	1132	1551	1551
		Economizer Side: 6′-0″[1829].			48AW (High Heat) 027	5445	5-101/8	3-85/16	1165	1149	1555	1577
		′	″	[1219].	48AW (High Heat) 027	5445	5-101/8	3-85/16	1165	1149	1555	1577
		Heat Side: 4 -0		[1219].
		Filter Access Side: 10′-0″[3048]. (For removal of evaporator coil.)			48AW/AY (Low Heat) 030	5365	5- 95/8	3-8	1132	1132	1551	1551
	4. For smaller service and operational clearances contact Carrier				48AW (High Heat) 030	5445	5-101/8	3-85/16	1165	1149	1555	1577
		Application Engineering Department.			48AW (High Heat) 030	5445	5-101/8	3-85/16	1165	1149	1555	1577
	5. Dimensions are in inches [mm].
					UNIT SIZE	OPERATING	A (mm)	B (mm)	CORNER WEIGHT (kg)
					UNIT SIZE	WEIGHT*	A (mm)	B (mm)	1	2	3	4
						(kg)			1	2	3	4
					48AW/AY (Low Heat) 020	2351	1839	1072	495	537	687	633
					48AW (High Heat) 020	2387	1862	1085	515	546	683	644
					48AW/AY (Low Heat) 025	2390	1768	1118	504	504	691	691
					48AW (High Heat) 025	2426	1781	1125	519	512	693	702
					48AW/AY (Low Heat) 027	2434	1768	1118	513	513	704	704
					48AW (High Heat) 027	2470	1781	1125	528	521	705	715
					48AW/AY (Low Heat) 030	2434	1768	1118	513	513	704	704
					48AW (High Heat) 030	2470	1781	1125	528	521	705	715

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Fig. 8 — Base Unit Dimensions — 48AW,AY020-030

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Carrier 48EW, 48EY024-068, 48AY020-060, 48EK, 48AK, 48AJ, 48EJ specifications Base Unit Dimensions — 48AW,AY020-030

Contents

INSTALLATION Step 1 — Provide Unit Support CONTENTSSAFETY CONSIDERATIONS 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 48AJ,AK,AW,AY Units Table 2 — Operating Weights48EJ,EK,EW,EY Units Fig. 18 — Air Distribution — Thru-the-Bottom Table 3 — Evaporator Fan Motor DataFig. 19 — Air Distribution — Thru-the-Side 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 Wiring CV or VAV Units Fig. 32 — Field Control Thermostat WiringFig. 33 — Field Control Temperature Sensor Table 9 — CCN Connection Approved Shielded CablesFig. 34 - Space Temperature Averaging Wiring Step 10 — Make Outdoor-AirInlet AdjustmentsFig. 35 — Field HIR Heat Interlock Relay Wiring Fig. 36 — Adding Seal Strip to Top of Hood Sides Fig. 37 - Economizer Hood AssemblyRight Side/Center Economizer Hood Shown Fig. 39 — Adding Seal Strip to Back of Hood Top Fig. 38 — Adding Seal Strip to Sides of Hood TopMounting Flange Fig. 40 — Adding Foam Strip to Cross MemberFig. 43 - Mounting Angle Without Tabs Attached to Filter Track AssemblyFilter Track Assembly Fig. 44 — Mounting Angle With Tabs Attached toEnthalpy Control HH57AC077 Fig. 47 - Wiring Connections for Solid-StateSave screws CONTROL POINT Fig. 49 - Economizer DetailsCONTROL CURVEFig. 51 - Pressure Transducer Locations 48AJ,AK,AW,AY060 and 48EJ,EK,EW,EY054-068Fig. 53A — Motormaster III Sensor Location Fig. 52 - Motormaster III Control Baffle Details48AJ,AK,AW,AY020-030and 48EJ,EK,EW,EY024-034 Fig. 53C — Motormaster III Sensor Location Fig. 53B — Motormaster III Sensor Location48AJ,AK,AW,AY035 and 48EJ,EK,EW,EY038 48AJ,AK,AW,AY040, 050 and 48EJ,EK,EW,EY048Step 13 — Field Modifications Fig. 54 — Side Return Air ConversionConstant Volume Units Fig. 56 — Wiring Field-SuppliedUnloaders forSTART-UP 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 StructureTable 40 — Occupied Heat and Morning Warm-Up Fig. 61 — Space Temperature Reset WiringOperation and Controlling Factors Fig. 62 - Field-SuppliedSmoke Detector Wiring Table 42 — Cooling Capacity Staging Table, CV Table 41 — Smoke Control ModesUnits with 2 Compressors Fig. 64 — Spark Gap Adjustment SERVICEFig. 63 — Door Latch Fig. 65 — Typical Gas Heating Section Fig. 66 — Gas Heat Section DetailsLubrication Fig. 67 — Evaporator-FanAlignment and AdjustmentFig. 68 — Evaporator Fan Coupling Evaporator-FanMotor Replacement Evaporator Fan Service and ReplacementBelt Tension Adjustment — To adjust belt tension Condenser-FanAdjustmentFig. 72 — Cooling Charging Chart Gas Valve AdjustmentFig. 71 — Cooling Charging Chart 48EJ,EK,EW,EY024-03448EJ,EK,EW,EY054-068 Fig. 73 — Cooling Charging ChartFig. 74 — Cooling Charging Chart 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 LPS - Low-PressureSwitch FPS — Freeze Protection SwitchHPS - High-PressureSwitch LEGENDcompressor HPS — High-PressureSwitch LEGEND FPS — Freeze Protection SwitchLPS — Low-PressureSwitch 8-Pass HPS — High-PressureSwitch LEGEND FPS — Freeze Protection SwitchLPS — Low-PressureSwitch LPS — Low-PressureSwitch LEGEND HPS — High-PressureSwitchTXV — Thermostatic Expansion Valve LEGEND HPS - High-PressureSwitchLPS — Low-PressureSwitch TXV — Thermostatic Expansion ValveLPS — Low-PressureSwitch LEGEND HPS — High-PressureSwitchTXV — Thermostatic Expansion Valve LPS — Low-PressureSwitch LEGEND HPS — High-PressureSwitchTXV — Thermostatic Expansion Valve LEGEND IDM — Induced-DraftMotor Fig. 94 — IGC Control Heating and CoolingIGC — Integrated Gas Unit Controller Table 44 - IGC Control Board LED Alarms Table 45 — Control Board LED AlarmsPage SERVICE TRAINING CALL FOR FREE CATALOGPRE-START-UP START-UPCHECKLISTTEMPERATURES ELECTRICALGENERAL