Carrier 50BV020-064 specifications

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LEGEND

 

 

Standard Components Legend:

Optional Components Legend:

#1

 

— First Stage

CMFR

— Compressor Malfunction Relay

#2

 

— Second Stage

CMR

— Compressor Monitor Relay

BM

— Blower Motor

EMS

— Energy Management System Relay

BR

— Blower Relay

FSR

— Freeze/Condensate Sensor Relay

CBR

— 24-vac Circuit Breaker

Freeze/Condensate Sensor Module (includes FSR)

CC

— Compressor Contactor

Condensate Sensor

CCH

— Crankcase Heater (When Supplied)

Freeze Sensor

CPM

— Compressor Protection Module

 

 

HPS

— High Pressure Switch

 

 

LPS

— Low Pressure Switch

 

 

MS

— Motor Starter

 

 

RVR

— Reversing Valve Relay (Heat Pumps Only)

 

 

RVS

— Reversing Valve Solenoid (Heat Pumps Only)

 

 

 

 

 

 

 

 

Factory Wire

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Field Wire

 

 

 

 

 

 

 

 

 

 

NOTES:

1.See unit nameplate for electrical rating.

2.All field wiring must be in accordance with NEC-NFPA #70.

3.208/230-v units are factory wired for 230-v operation. For 208-v operation, remove ORG lead and replace with RED lead. Cap all unused leads.

4.Check phase rotation on all scroll compressor units. Reverse rotation will damage the compressor and void unit warranty.

5.For alternative EMS coil voltages, consult factory.

6.UPM board includes built in 30 to 60-second random start, 5-minute delay on break, 90-second low pres- sure bypass, and 5-second second stage delay.

7.Setting the test mode jumper to yes reduces all time delays to 5 seconds.

Fig. 39 — 50BVT,U,V034 Constant Volume Wiring Schematic

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Contents SAFETY CONSIDERATIONS Installation, Start-Upand Service InstructionsCONTENTS 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 a50-7307efSize 034 Units Size 044-064Units Shipping Weights lba50-8235 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 Two-StageCooling Units Fig. 24 - Typical Wiring 18 to 30 Ton Unitsa50-7272ef a50-7273ef Table 10 - Recommended Cablesa50-7164tf Fig. 26 - Field Terminal BlockInstallation Unit Discharge Location a50-7275efFig. 27 - Modular Unit VAV Control Panel a39-1867tSTART-UP Table 11 - Thermistor Resistance vs TemperatureValues for Supply-AirTemperature Sensor 10 Kilo- ohmCV 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 23 - Software Points Table 21 - Controller Set PointsTable 22 - Controller Hardware 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 31 - Clearing a Forced Input or Output Table 29 - CV Units LED Diagnostic CodesTable 30 - Forcing an Input or Output Page Page Page Page FIELD WIRING UNIT WIRINGPage FIELD WIRING WIRE LEGENDa50-7282ef TRANS-1FIELD WIRING PCB2 J1PCB1 FIELD WIRINGUNIT WIRING 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
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