Carrier 42BVC, 42BHC manual Application data, Basic definitions, Unit Hand Piping Components

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Application data

Basic definitions

Unit hand — When facing the supply air outlet from the front of the unit (air blowing in your face), your right hand will be the right hand side of the unit and your left hand the left hand side of the unit.

UNIT HAND

PIPING COMPONENTS

SYMBOL/SKETCH

DESCRIPTION

CV FACTOR

RATING*

1/2

3/4

PSI

F

 

 

 

MANUAL AIR VENT: Threaded brass needle valve

 

 

 

 

 

with screwdriver slot for adjustment.

 

 

 

 

 

Application — Body brazed into high point of heat-

N/A

N/A

400

100

 

ing and cooling coils for bleeding air from coil. Stan-

 

dard item on all hydronic coils (not used on steam

 

 

 

 

 

or DX coils). Should not be used in lieu of main sys-

 

 

 

 

 

tem air vents.

 

 

 

 

 

AUTOMATIC AIR VENT: Nickel plated brass valve,

 

 

 

 

 

fiber-disc type, with positive shut-off ballcheck and

 

 

 

 

 

quick vent feature via knurled vent screw.

 

 

 

 

 

Application — Optional replacement for manual air

 

 

 

 

 

vent. Automatically passes minute quantities of air

 

 

 

 

 

through the fiber discs which expand upon contact

N/A

N/A

125

240

 

with water, completely sealing the valve. As air

 

 

 

 

 

 

accumulates, the fiber discs dry and shrink, repeat-

 

 

 

 

 

ing the cycle. Not recommended for removing large

 

 

 

 

 

quantities of air encountered during initial start-up

 

 

 

 

 

or subsequent draining and refilling. Should not be

 

 

 

 

 

used in lieu of main system air vents.

 

 

 

 

 

SWAGE: Copper tube end expanded to accept a

 

 

 

 

 

copper tube of the same size for factory or field

 

 

 

 

 

brazing.

N/A

N/A

300

200

 

Application — Used where possible for all tubing

 

 

 

 

 

joints for best joint integrity.

 

 

 

 

 

CIRCUIT SETTER: Variable water flow balancing

 

 

 

 

 

valve with manual adjustment knob, pointer, per-

 

 

 

 

 

cent-open scale, memory stop and integral pres-

 

 

 

 

 

sure read-out ports.

2.12

3.9

300

250

 

Application — Used for close tolerance water flow

 

 

 

 

 

balancing. Positive shut-off ball valve feature allows

 

 

 

 

 

usage as combination balancing and shut-off valve.

 

 

 

 

 

 

 

 

 

 

LEGEND

Cv — Coefficient of Velocity

DX — Direct Expansion

*Check all system component pressure ratings (coils, values, pumps, etc.) with manufacturer and any applicable local or national piping codes prior to specifying system pressure rating.

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Contents 42BVC Unit Features/BenefitsVariety of coil options reduces first cost 42BHC UnitTable of contents Physical data Model number nomenclatureSize Nominal Cfm Coil Rows 42BHC, BVC Options and Accessories Options and accessoriesFactory-installed options Field-installed accessoriesAux Thermostat Functions42BHC Base unit dimensions42BHC FAN Coil Base Unit no Controls Unit42BHC FAN Coil with Motor Control Option 42BHC FAN Coil with Electric Heat Option Fan Size Dimensions Supply Duct Return Duct42BVC FAN Coil Base Unit no Controls 42BVC42BVC FAN Coil with Motor Control Option 42BVC FAN Coil with Electric Heat Option Dimensions42BHC Weight 42BHC Unit Corner Weights lbTotal Weight Unit Correction Factor lb 42BVC Unit Corner Weights lbUnit Size Accessory dimensionsMixing BOX 42BHC,BVCMixing BOX Rails Piping Size Close Valve PackagesOFF Head Stub OUT Sizes Row Coil SO Piping Connection Location DiagramNominal Heat Options 42BHC,BVC Coil Rows Basic definitions Application dataUnit Hand Piping Components Piping Components WAY Motorized Valve Electric Formulas Selection procedureAltitude Cooling Correction Factors Performance data42BHC,BVC Airflow Correction Factors Direct Expansion DX Correction Factors42BHC,BVC Nominal Heating Capacities 42BHC, BVC Nominal Cooling Capacities42BHC,BVC 6-ROW Cooling Capacity by Gpm 42BHC,BVC 4-ROW Cooling Capacity by Gpm42BHC,BVC 4-ROW Cooling Capacity by ∆T 42BHC,BVC 8-ROW Cooling Capacity by Gpm42BHC, BVC 8-ROW Cooling Capacity by ∆T 42BHC, BVC 6-ROW Cooling Capacity by ∆TCFM Suction 42BHC,BVC Temp F Size Blower CFM 42BHC,BVC Unit Horsepower Data TableRpm Bhp Unit Horsepower Data Table Filter 42BHC,BVC Component Static Resistance in. wgCv Factor by Coil and Unit Size Row1000 2000 4000 Sound Power Data42BHC,BVC Unit Size Nominal CFM Center Frequency Hz 125 250Typical wiring schematics Page Typical wiring schematics Motor Performance Data Amps Service SwitchesElectrical data 42BHC,BVC Electric Heater Data AvailabilityMotor and electric heat control options Standard control featuresControls Motor control optionsSystem Fan Coil Unit Guide specificationsCarrier Corporation Syracuse, New York 05A
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