Controls, Standard control features | Carrier 42BHC, 42BVC specs

Controls

Standard control features

•4 in. x 4 in. junction box

NOTE: Motor leads are wired to the 4 in. x 4 in. junction box, mounted on the external panel. Field verification of the motor rotation is required on 3-phase applications.

Motor control options

•Interlocking disconnect switch*

•24-v class 2 transformer (40 va)†

•8-pole control terminal strip

•Motor power fusing*

•Motor control contactor**

Motor and electric heat control options

NOTE: Electric heat option requires same voltage as motor and must include the control option. These control features are standard with electric heat options and control option.

•Interlocking disconnect switch*

•Heater power fusing*

•24-v class 2 transformer (40 va)†

•8-pole control terminal strip

•Auto reset temperature limit switch

•Manual reset backup temperature limit switch

•80/20 heater element wire

•Motor power fusing*

•Motor control contactor**

•Agency listed for 0-in. clearance

Electric heat options:

•Single-phase, 1 or 2 stage heat

•Three-phase, 1, 2 or 3 stage heat

*Complies with NEC’s requirement, Article 430 for dis- connect, branch circuit protection motor controller and motor overload protection.

†No control fusing necessary.

**Complies with NEC’s requirement for a motor starter with internal heating elements when used with the factory’s standard motors with integral thermal overload protection.

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Carrier 42BHC, 42BVC Controls, Standard control features, Motor control options, Motor and electric heat control options

Contents

42BHC Unit Features/BenefitsVariety of coil options reduces first cost 42BVC Unit Table of contents Size Nominal Cfm Coil Rows Model number nomenclaturePhysical data Field-installed accessories Options and accessoriesFactory-installed options 42BHC, BVC Options and Accessories Thermostat Functions Aux Unit Base unit dimensions42BHC FAN Coil Base Unit no Controls 42BHC 42BHC FAN Coil with Motor Control Option 42BHC FAN Coil with Electric Heat Option 42BVC Dimensions Supply Duct Return Duct42BVC FAN Coil Base Unit no Controls Fan Size 42BVC FAN Coil with Motor Control Option Dimensions 42BVC FAN Coil with Electric Heat Option 42BHC Unit Corner Weights lb 42BHC Weight 42BVC Unit Corner Weights lb Total Weight Unit Correction Factor lb 42BHC,BVC Accessory dimensionsMixing BOX Unit Size Mixing BOX Rails OFF Valve PackagesPiping Size Close Nominal Piping Connection Location DiagramHead Stub OUT Sizes Row Coil SO Heat Options 42BHC,BVC Coil Rows Unit Hand Piping Components Application dataBasic definitions Piping Components WAY Motorized Valve Electric Selection procedure Formulas Direct Expansion DX Correction Factors Performance data42BHC,BVC Airflow Correction Factors Altitude Cooling Correction Factors 42BHC, BVC Nominal Cooling Capacities 42BHC,BVC Nominal Heating Capacities 42BHC,BVC 4-ROW Cooling Capacity by Gpm 42BHC,BVC 6-ROW Cooling Capacity by Gpm 42BHC,BVC 8-ROW Cooling Capacity by Gpm 42BHC,BVC 4-ROW Cooling Capacity by ∆T 42BHC, BVC 6-ROW Cooling Capacity by ∆T 42BHC, BVC 8-ROW Cooling Capacity by ∆T CFM Suction 42BHC,BVC Temp F Rpm Bhp Unit Horsepower Data TableSize Blower CFM 42BHC,BVC Unit Horsepower Data Table Row 42BHC,BVC Component Static Resistance in. wgCv Factor by Coil and Unit Size Filter Center Frequency Hz 125 250 Sound Power Data42BHC,BVC Unit Size Nominal CFM 1000 2000 4000 Typical wiring schematics Page Typical wiring schematics 42BHC,BVC Electric Heater Data Availability Service SwitchesElectrical data Motor Performance Data Amps Motor control options Standard control featuresControls Motor and electric heat control options Guide specifications System Fan Coil Unit Carrier Corporation Syracuse, New York 05A