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Carrier 50BV020-064 specifications 50BVC,J,Q020-034Dimensions

Models: 50BV020-064

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Fig. 2 — 50BVC,J,Q020-034 Dimensions

NOTES:

1.Dimensions in inches [mm].

2.VAV models (50BVJ) are rear return, top supply only.

3.Compressor, controls, and condenser access are through front panels.

4.Field power connections are 1-3/4 inches. Control connections are 7/8 inches.

5. Optional blower orientation is selected in model number nomenclature as option 9 in FIOP section (digits 15 and 16).

Shows recommended minimum service clearances.

	OPTIONAL	STANDARD
	BLOWER
		BLOWER
	ORIENTATION
		ORIENTATION

	OPTIONAL	STANDARD
	BLOWER
		BLOWER
	ORIENTATION
		ORIENTATION

Fig. 2 — 50BVC,J,Q020-034 Dimensions

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Carrier 50BV020-064 specifications 50BVC,J,Q020-034Dimensions

Contents

CONTENTS Installation, Start-Upand Service InstructionsSAFETY CONSIDERATIONS MAJOR SYSTEM COMPONENTS Constant Volume CV Units GENERALINSTALLATION Step 1 - Complete Pre-InstallationChecksTable 2 - Modular Unit Shipping Table a50-7257efFig. 2 - 50BVC,J,Q020-034Dimensions Fig. 3 - 50BVE,K020-034Dimensions Fig. 4 - 50BVT,V,W034 High-BoyDimensions a50-8201Fig. 5 - 50BVT,V,W034 Low-BoyDimensions Fig. 6 - 50BVT,V,W044-064 High-BoyDimensions Fig. 7 - 50BVT,V,W044-064 Low-BoyDimensions Fig. 8 - 50BVU,X034 High-BoyDimensions Fig. 9 - 50BVU,X034 Low-BoyDimensions Fig. 10 - 50BVU,X044-064 High-BoyDimensions Fig. 11 - 50BVU,X044-064 Low-BoyDimensions NOTES 1.Dimensions in inches mm a50-7306efNOTES 1.Dimensions in inches mm a50-7307efa50-8235 Shipping Weights lbSize 034 Units Size 044-064Units Table 3A - Physical Data - 50BVC,E,J,K,Q Table 3B - Physical Data - 50BVT,U,V,W,X Fig. 15 - Typical Fan Discharge Connections for Multiple Fan Unitsa50-7138ef Fig. 16 - Duct Static Pressure ProbeP/N 39EK20462 a50-7267efFig. 19 - DHS Limit Switch P/N Step 4 - Make Piping Connectionsa50-8253 Fig. 18 - DHS Pressure Limit LocationTable 5A - Condenser Pressure Drop 50BVC,J,Q UnitsTable 5B - Condenser Pressure Drop 50BVT,V,W UnitsTable 6A - Hot Water Pressure Drop 50BVC,E,J,K,Q UnitsTable 6B - Hot Water Pressure Drop 50BVT,U,V,W,X UnitsStep 5 - Complete Electrical Connections Table 7B - Economizer Pressure Drop Curveft wg, 50BVT,U,V,W,X Units a50-7270efTable 9A - Electrical Data - 50BVC,E,J,K,Q Table 9B - Electrical Data - 50BVT,U,V,W,X a50-7272ef Fig. 24 - Typical Wiring 18 to 30 Ton UnitsTwo-StageCooling Units a50-7273ef Table 10 - Recommended Cablesa50-7164tf Fig. 26 - Field Terminal BlockFig. 29 - Supply/Return Air Temperature Fig. 30 - Supply-AirTemperature SensorInstallation Unit Discharge Location a50-7275efTable 11 - Thermistor Resistance vs Temperature Values for Supply-AirTemperature SensorTable 12 - Thermistor Resistance vs Temperature Values for Return-AirTemperature Sensor 5 kiloohmCV Unit Start-Up Table 13 - Fan Performance - 50BVC,E,Q020Table 14 - Fan Performance - 50BVC,E,Q024 Table 15 - Fan Performance - 50BVC,E,Q028 Table 16 - Fan Performance - 50BVC,E,Q034 Table 17 - Fan Performance - 50BVT,U,V034 Table 17 - Fan Performance - 50BVT,U,V034 cont Table 18 - Fan Performance - 50BVT,U,V044 Table 19 - Fan Performance - 50BVT,U,V054 Table 19 - Fan Performance - 50BVT,U,V054 cont Table 20 - Fan Performance - 50BVT,U,V064 Table 20 - Fan Performance - 50BVT,U,V064 cont VAV Unit Start-Up OMNIZONE VPAC 02-06-04Fig. 32 - LID a50-7425efFig. 33 - 50BV VFD Display The LID display will show Year Table 22 - Controller Hardware Points Table 21 - Controller Set PointsTable 23 - Software Points Table 24 - Configuration Parameters Unoccupied space or return air temperature demand SERVICE MAINTENANCEa50-186tf Fig. 34 - Gravity Flow Methoda50-187tf Fig. 35 - Forced Circulation MethodEvaporator Fan Performance Adjustment TROUBLESHOOTINGCharging the System a50-7135tfPROBLEM POSSIBLE CAUSETable 28 - Unit Troubleshooting PROBLEMCORRECTION PROCEDURE POSSIBLE CAUSETable 30 - Forcing an Input or Output Table 29 - CV Units LED Diagnostic CodesTable 31 - Clearing a Forced Input or Output Page Page Page Page FIELD WIRING UNIT WIRINGPage FIELD WIRING WIRE LEGENDa50-7282ef TRANS-1FIELD WIRING PCB2 J1UNIT WIRING FIELD WIRINGPCB1 FIELD WIRING PCB1LEGEND AND NOTES FOR FIG Copyright 2008 Carrier Corporation Catalog NoForm 50BV-3SI 10-08START-UPCHECKLIST I. PRELIMINARY INFORMATIONII. PRE-START-UP CONTROLSIII.START-UP