Carrier 42BHC, 42BVC manual Table of contents

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Fan wheels are designed to provide low operating costs

The forward-curved, centrifugal, double-inlet fans are statically and dynamically balanced at the factory to minimize transmission of vibration

to the building structure.

The belt-driven motor (single or three phase) has a variable-pitch pulley which adjusts at the jobsite to accom- modate limited ranges of air quantities and pressures.

All motors (single and three phase) are UL listed, factory wired, single speed with thermal overload protec- tion and are continuous duty rated. Motors are supplied with permanently

provided on the top and bottom of each corner of the unit One-in. duct collars on discharge and on return are fur- nished standard. These integral duct collars cut installation time and labor expense.

Durable construction means easy-to-maintain units

The 42BHC,BVC fan coils casings are fabricated from heavy-gage galvanized G90 steel, reinforced for maximum rigidity and structural strength. Remov- able side panels with tool-less camlock fasteners allow easy access for servic- ing interior components.

One-inch matte surface, fiberglass thermal/acoustical insulation lines the fan coil cabinets to prevent sweating and to muffle sound transmission.

The stainless steel, double-sloped condensate drain pan extends under full coil surface to cut maintenance costs.

Slide-in return-duct collar filter makes it possible to remove and replace the filter without disturbing return air ductwork.

lubricated bearings, class-B insulation and are open drip-proof. The motor mount has an adjustable platform for easy belt adjustment. The motor and its mounting are independently isolated from the cabinet and the blower. An adjustable pitch pulley allows cfm bal- ancing to meet system requirements. Motor drive packages are provided with keyed pulleys.

Complete factory assembly minimizes on-the-jobsite costs and problems

Compact, lightweight units are designed for easy mounting. Knockouts designed to accept 3/8-in. threaded rods are

Table of contents

Page

Features/Benefits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1,2

Model Number Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Physical Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Options and Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4,5

Base Unit Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13

Accessory Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-18

Application Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-21

Selection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23-33

Typical Wiring Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34-36

Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Guide Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39,40

INTERNAL FEATURES OF A 42BHC FAN COIL UNIT

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Contents 42BHC Unit Features/BenefitsVariety of coil options reduces first cost 42BVC UnitTable of contents Size Nominal Cfm Coil Rows Model number nomenclaturePhysical data Field-installed accessories Options and accessoriesFactory-installed options 42BHC, BVC Options and AccessoriesThermostat Functions AuxUnit Base unit dimensions42BHC FAN Coil Base Unit no Controls 42BHC42BHC 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 Size42BVC FAN Coil with Motor Control Option Dimensions 42BVC FAN Coil with Electric Heat Option42BHC Unit Corner Weights lb 42BHC Weight42BVC Unit Corner Weights lb Total Weight Unit Correction Factor lb42BHC,BVC Accessory dimensionsMixing BOX Unit SizeMixing 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 FormulasDirect Expansion DX Correction Factors Performance data42BHC,BVC Airflow Correction Factors Altitude Cooling Correction Factors42BHC, BVC Nominal Cooling Capacities 42BHC,BVC Nominal Heating Capacities42BHC,BVC 4-ROW Cooling Capacity by Gpm 42BHC,BVC 6-ROW Cooling Capacity by Gpm42BHC,BVC 8-ROW Cooling Capacity by Gpm 42BHC,BVC 4-ROW Cooling Capacity by ∆T42BHC, BVC 6-ROW Cooling Capacity by ∆T 42BHC, BVC 8-ROW Cooling Capacity by ∆TCFM 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 FilterCenter Frequency Hz 125 250 Sound Power Data42BHC,BVC Unit Size Nominal CFM 1000 2000 4000Typical wiring schematics Page Typical wiring schematics 42BHC,BVC Electric Heater Data Availability Service SwitchesElectrical data Motor Performance Data AmpsMotor control options Standard control featuresControls Motor and electric heat control optionsGuide specifications System Fan Coil UnitCarrier Corporation Syracuse, New York 05A
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