Copyright 2008 Carrier Corporation, 10-08 | Carrier 50BV020-064

Copyright 2008 Carrier Corporation

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 04-53500001-01

Printed in U.S.A.

Form 50BV-3SI

Pg 66

10-08

Replaces: 50BV-2SI

Image 66

Carrier 50BV020-064 specifications Copyright 2008 Carrier Corporation, Catalog No, Form 50BV-3SI, 10-08, Replaces 50BV-2SI

Contents

Installation, Start-Upand Service Instructions CONTENTSSAFETY CONSIDERATIONS MAJOR SYSTEM COMPONENTS Constant Volume CV Units GENERAL Table 2 - Modular Unit Shipping Table INSTALLATIONStep 1 - Complete Pre-InstallationChecks a50-7257ef Fig. 2 - 50BVC,J,Q020-034Dimensions Fig. 3 - 50BVE,K020-034Dimensions Fig. 4 - 50BVT,V,W034 High-BoyDimensions a50-8201 Fig. 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 a50-7306ef NOTES 1.Dimensions in inches mm a50-7307ef Shipping Weights lb a50-8235Size 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 Units P/N 39EK20462 a50-7138efFig. 16 - Duct Static Pressure Probe a50-7267ef a50-8253 Fig. 19 - DHS Limit Switch P/NStep 4 - Make Piping Connections Fig. 18 - DHS Pressure Limit Location Table 5B - Condenser Pressure Drop Table 5A - Condenser Pressure Drop50BVC,J,Q Units 50BVT,V,W Units Table 6B - Hot Water Pressure Drop Table 6A - Hot Water Pressure Drop50BVC,E,J,K,Q Units 50BVT,U,V,W,X Units ft wg, 50BVT,U,V,W,X Units Step 5 - Complete Electrical ConnectionsTable 7B - Economizer Pressure Drop Curve a50-7270ef Table 9A - Electrical Data - 50BVC,E,J,K,Q Table 9B - Electrical Data - 50BVT,U,V,W,X Fig. 24 - Typical Wiring 18 to 30 Ton Units a50-7272efTwo-StageCooling Units a50-7164tf a50-7273efTable 10 - Recommended Cables Fig. 26 - Field Terminal Block Fig. 27 - Modular Unit VAV Control Panel Installation Unit Discharge Locationa50-7275ef a39-1867t Values for Supply-AirTemperature Sensor START-UPTable 11 - Thermistor Resistance vs Temperature 10 Kilo- ohm CV Unit Start-Up Table 13 - Fan Performance - 50BVC,E,Q020 Table 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 Fig. 32 - LID OMNIZONE VPAC02-06-04 a50-7425ef Fig. 33 - 50BV VFD Display The LID display will show Year Table 21 - Controller Set Points Table 22 - Controller Hardware PointsTable 23 - Software Points Table 24 - Configuration Parameters Unoccupied space or return air temperature demand SERVICE MAINTENANCE a50-187tf a50-186tfFig. 34 - Gravity Flow Method Fig. 35 - Forced Circulation Method Charging the System Evaporator Fan Performance AdjustmentTROUBLESHOOTING a50-7135tf PROBLEM POSSIBLE CAUSE CORRECTION PROCEDURE Table 28 - Unit TroubleshootingPROBLEM POSSIBLE CAUSE Table 29 - CV Units LED Diagnostic Codes Table 30 - Forcing an Input or OutputTable 31 - Clearing a Forced Input or Output Page Page Page Page FIELD WIRING UNIT WIRINGPage a50-7282ef FIELD WIRINGWIRE LEGEND TRANS-1 FIELD WIRING PCB2 J1 FIELD WIRING UNIT WIRINGPCB1 FIELD WIRING PCB1 LEGEND AND NOTES FOR FIG Form 50BV-3SI Copyright 2008 Carrier CorporationCatalog No 10-08 II. PRE-START-UP START-UPCHECKLISTI. PRELIMINARY INFORMATION CONTROLS III.START-UP