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Carrier 42S, 42C, 42D, 42V specifications Remote/Wall-MountedThermostat Line Voltage, a42-4078

Models: 42V 42D 42S 42C

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a42-4078

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Fig. 66 — 42C,S,V (except VG), and 42D (600-1000 cfm) 4-Pipe Heating and Cooling —

Remote/Wall-Mounted Thermostat (Line Voltage)

a42-4078

Fig. 67 — 42SG,SH,SJ,VA,VB,VC,VE,VF 4-Pipe Heating and Cooling —

Unit-Mounted Debonair® Thermostat (24-v) and Duct Sensor

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Carrier 42S, 42C, 42D, 42V specifications Remote/Wall-MountedThermostat Line Voltage, a42-4078

Contents

42C,D,S,V Series Fan Coil Air Conditioners Installation, Start-Upand Service InstructionsTable 2 — Physical Data — 42V Series Units Table 1 — Physical Data — 42C Series UnitsPRE-INSTALLATION Fig. 1 — 42CA Furred-InHorizontal Unit Dimensions UNIT a42-4101 A42-4102 A42-4103 A42-4104 A42-4105 Fig. 7 - 42CG Horizontal Cabinet Unit DimensionsLEGEND 1 — Junction Box, 4 in. x 4 in A42-4149 Front Supply, and Bottom Return Dimensionsa42-4150 a42-4151 Front Supply, and Rear Return Dimensionsa42-4152 Front Supply, Rear Return, and Heater DimensionsUNIT UNIT SIZE Fig. 15 — 42VA Furred-InVertical Unit Dimensions Fig. 16 - 42VB Vertical Cabinet Unit Dimensions LEGEND 1 — Standard Stamped Supply Grille Fig. 18 - 42VC Furred-InLowboy Unit Dimensions LEGEND 1 — Unit-MountedControl Box Optional Fig. 20 — 42VE Cabinet Lowboy Unit Dimensions LEGEND A42-4116 Fig. 22 — 42VG Furred-InWall Unit Dimensionsa42-4120 A42-4121 Motor A42-4122Blower Motor A42-4123Blower A42-4124 A42-4125 Fig. 28 — 42SG Furred-InStack DimensionsA42-4126 Fig. 29 — 42SH Cabinet DimensionsA42-4127 A42-4128 Fig. 31 - 42SGM Furred-InMaster Stack DimensionsA42-4129 Fig. 32 — 42SGS Furred-InSlave Stack Dimensionsa42-4154 a42-4155 a42-4169 a42-4167A42-4173 A42-4171A42-4168 PANEL AND FRAME DIMENSIONS inA42-4170 A42-4161INSTALLATION Step 1 — Place Units in Position Fig. 38 — 42SJ Unit as Shipped Fig. 39 — 42SJ Unit InstallationFig. 37 — 42SJ Unit with Standard and Siamese Risers7.Attach unit risers Fig. 41 — Pipe Connection Configurations Field Piping Connections Hydronic Coil Arrangement42VG a42-4177Fig. 43 — Symbols and Placement of Valves Fig. 44 — Two-WayMotorized Control Valve Package a42-4174a42-4175 COILCOIL a42-4176COIL COILCOIL COILCOIL COIL42D Unit Shown Fig. 48 - Typical Drain Line DetailsTable 5 — Piping Components Table 5 — Piping Components cont Table 5 - Piping Components cont SYMBOL/SKETCHTable 5 — Piping Components cont SYMBOL/SKETCHJOINT MATERIALS Fig. 50 — Manual Fan Control Fig. 51 — Thermostatic Fan Control 2-PipeSystem Remote/Wall-MountedThermostat Line Voltage a42-4060a42-4061 a42-4059Unit-MountedDebonair Thermostat 24-v,Duct Sensor Unit-MountedThermostat Line Voltage a42-4066THERMOSTAT PART # LIMIT SWITCHTHERMOSTAT #33CSSN2-FC VALVEThermostat 2-PipeTotal Electric Heat with Valve Con- trol— With this system, the complete heating requirement for the space is provided by the electric heater; the water system is never changed over for heating. It is therefore possible, just as with 4-pipesystems, to have heating or cooling at any time of the year a42-4067Remote/Wall-MountedThermostat Line Voltage a42-4073Unit-MountedThermostat Line Voltage THERMOSTAT #33CSSN2-FC a42-4072Unit-MountedThermostat Line Voltage a42-4079a42-4078 Remote/Wall-MountedThermostat Line VoltageRemote/Wall-MountedDebonair Thermostat To Clean Coil SERVICEStep 7 — Make Final Preparations START-UPc.Reinstall fan deck if removed Page Catalog No. Copyright 2009 Carrier CorporationPrinted in U.S.A Form 42-3SII.Project Information INSPECTION, INSTALLATION, AND START-UPCHECKLISTFAN AND MOTOR