Carrier 42CA, 42D, 42CE, 42CG, 42CK Product Data

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42SH STACK

Product Data

42CA HORIZONTAL

42DA DUCTED

42VB VERTICAL

42C,D,S,V Series

Fan Coil

Air Conditioners

50/60 Hz

150 to 2000 cfm

Carrier’s 42C,D,S,V Series fan-coil units combine design flexibility with easy, low-cost installation.

Features/Benefits

Versatility

If room fan coils are the answer to your job requirements, choose from Carrier’s extensive range of superior fan-coil units.

With Carrier’s 42 series fan coils, you can select from 5 horizontal, 6 vertical, 5 ducted or 3 stacked models; furred-in or cabinet style, slant top or low silhouette, in 150 through 2000 cfm capacities. Coils are available with 1, 2, 3, 4, or 5 rows (depending on model), to satisfy a variety of application requirements. The units are ideal for installation in motels, apartments, and other multi-room buildings. Many optional control packages are available, including 2-pipe heating and cooling, 2-pipe heating and cooling with auxiliary electric heat, 2-pipe cooling with total electric heat, and 4-pipe heating and cooling. Also offered are manual and automatic changeover controls and several thermostat options.

Casings and frame are fabricated from tough, heavy gage galvanized steel. Optional decorative colors allow the unit to blend with any interior design.

Low-cost installation and operation

Each unit is designed to occupy a minimum space. No complex system controls are required for Carrier fan coil units. Piping, drain, and wiring connections are readily accessible and mounting holes and slots are pre-drilled to save installation time and field labor expense.

42 Series quality reduces service and maintenance expenses

Condensate drain pan is heavy gage galvanized steel with closed-cell, fire retardant foam insulation. Units come standard with Tuf-Skin™ II insulation for energy savings, sound absorption and Indoor Air Quality (IAQ) preservation. Water never touches the pan, so corrosion is minimized and long, trouble-free life is assured.

Efficient operation

All units use permanent split capacitor motors for minimum electrical consumption. Blower wheels are centrifugal-type, forward curved, double width, and double inlet sized for maximum efficiency.

Quiet, dependable performance

All units are built to operate unobtrusively with quiet motors and fans. In ad-

dition,

/2-in. thick sound-absorbing, multi-density, matt faced, neoprenecoated fiberglass insulation is used to line the cabinet.

42C series horizontal, 42V series vertical units

Carrier room fan-coil units operate at exceptionally low sound levels. A generous amount of insulation absorbs operating sound and rugged, rigid construction ensures vibration free operation at all fan speeds.

Economical, three-speed fans deliver just the right amount of conditioned air for your comfort needs at any load, and each unit can be shut off when not in use. Permanent split capacitor motors deliver peak operating efficiency. By choosing Carrier units, you can match your application with a wide range of custom-designed options and accessories, including electric heat. Filters are cleanable or throwaway type.

Motor bearings are heavy-duty sleeve type, with oversize oil reservoirs to assure long bearing life. All coils are factory leak-tested at 350 psig minimum air pressure.

Carrier room fan-coil units provide unsurpassed year-round comfort, with heating and cooling performance certified in compliance with ARI (Air Conditioning & Refrigeration Institute) 440-98.

42D ducted units

A drip lip (removable drain pan extension) is provided for field installation on ceiling models 42DA,DC,DE and DF when a motorized valve package is ordered. The drip lip is also available as an accessory for use with other controls.

Motor/blower assembly can be easily removed from the unit for ease of service. Removing this assembly provides clear access to the entering air face of the coil, making coil cleaning a relatively simple matter. Removable panels make access to components and connections easy.

42S stacked units

Each Carrier stack unit comes factoryequipped with insulated supply, return, and drain risers. The design of the 42S units allow them to be set one on top of the other in a vertical column rising floor to floor up the building. Each riser has a 3-in. belled section at the top, so the riser piping can be

connected by only one sweat connection per riser. Field-installed couplings or internal pipe connections are not needed.

Each stack unit is factory pre-wired with all control, motor, and optional electric heat wiring conveniently terminating in a single, accessible junction box. Each stack unit requires only one field power connection.

Field-mounted accessories, such as the 3-speed switch/thermostat package for furred-in units, are equipped with a pre-wired quick disconnect plug for easy installation.

The riser size for the stack units can be specified to match building requirements so that cutting, sorting, and handling of the risers is not necessary. All units arrive tagged as specified by the customer for efficient delivery to the correct building location.

Units can be loaded onto delivery trucks so that they can be off-loaded in the proper installation sequence.

Table of contents

Features/Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6

Options and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9

Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-12

Application Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-25

Selection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

42C,V

Model Number Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

ARI Capacity Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Sound data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29,30

Physical Data and Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31-42

Accessory Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43-47

Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48-63

Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64-66

42D

Model Number Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

ARI Capacity Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Sound data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Physical Data and Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68-73

Accessory Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74-76

Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77-86

Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87-89

42S

Model Number Nomenclature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

ARI Capacity Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

Sound data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

Physical Data and Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91-94

Accessory Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95-97

Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98-103

Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

Guide Specifications — 42C Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105,106

Guide Specifications — 42D Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107,108

Guide Specifications — 42S Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109-111

Guide Specifications — 42V Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112,113

Page

Features/Benefits (cont)

42CF

High-static, furred-in model. (400-1000 cfm)

42CA

Furred-in ceiling model with low silhouette. (200-1200 cfm)

42CE

Furred-in ceiling model with factory-installed plenum. (200-1200 cfm)

42CG

Cabinet model for under-ceiling mount with bottom or rear stamped louver return air grille. (200-1200 cfm)

42CK

Cabinet model with telescoping flip-down panel and stamped louver bottom return or duct collar rear return. (200-1200 cfm)

Features/Benefits (cont)

42VA

Furred-in model for under-the-window applications with top or front discharge. (200-1200 cfm)

42VC

Furred-in loboy model for concealed under-thewindow applications. (200-600 cfm)

42VB

Cabinet model with top or front discharge. (200-1200 cfm)

42VF

Cabinet model with slant top and top or front discharge. (200-1200 cfm)

42VE

Cabinet loboy model with stamped louver discharge grille and 2 control access doors. (200-600 cfm)

42VG

Furred-in wall model. Available with a 10-in. valve compartment extension. (150 and 300 cfm)

42DA

Furred-in model for installation in the ceiling or over the closet.

42DD

Vertical model with galvanized casing. Commonly for closet installation.

42DE

Ceiling model with galvanized casing.

42DC

Furred-in ceiling model with factory-installed insulated plenum.

42DF

Exposed-ceiling cabinet model with integral double-deflection discharge grille and a bar-type return-air grille.

Features/Benefits (cont)

42SG — Furred-in-stack 42SJ — Back-to-back

furred-in stack

The furred-in-stack is a single unit, constructed of 18-gage galvanized steel designed for concealed applications in corners or along room walls. After installation of the unit, only the supply-air grille, room thermostat, and decorative return-air grille access panel are visible.

The return-air grille is removable to allow access for servicing major components. The grille is furnished in a arctic whitecolored enamel-baked finish. Other colors are available.

The 42SG is also available in master/ slave unit pairs. The pairs are actually 2 separate units shipped individually and installed and piped together in the field. The master unit includes risers with stubout for field piping connections to the slave unit which has no risers of its own.

The back-to-back furred-in stack is designed for installation in the separation wall between 2 separate rooms. The unit is constructed of 18-gage galvanized steel. The unit consists of 2 separate units piped to a set of common risers. Each unit has its own valves and controls. After installation of the unit, only the supply-air grille, room thermostat, and decorative return-air grille panel are visible.

The return-air grille is removable to allow access for servicing major components. The grille is furnished in a arctic whitecolored enamel-baked finish. Other colors are available.

42SH — Cabinet stack

The cabinet stack unit is designed for applications where concealed installations are not possible or practical. The unit is constructed of 18-gage galvanized steel with a Arctic White-colored enamel-baked finish. This model features a double-deflection supply-air grille and an integral return-air grille access panel. Controls are normally mounted on the unit but may also be remote wall mounted.

Options and accessories

Factory-installed options

Coils — Choice of a 2-pipe or 4-pipe system with the fol-

lowing chilled/hot water coil configurations:

• 2-Row Coil (42VC, VE, VG only)

• 3-Row Coil - 42C, D, V, S

• 4-Row Coil - 42D, S

• 4-Row High Capacity - 42V, C, S

• 3-Row High Capacity - 42VC, VE

• 3/1 Opposite End Coil Connections - 42C series, 42VA, 42VB, 42VF

• 3/1 Same End Coil Connections - 42C series, 42VA, 42VB, 42VF, 42S

• 2/1 Same End Coil Connection - 42VC, VE

• 3/2 Opposite End Coil Connections - 42C series, 42VA, 42VB, 42VF, 42S

• 3/2 Same End Coil Connection - 42C series, 42VA, 42VB, 42VF

• 4/1 Opposite End Connections - 42D

• 4/1 Same End Connections - 42D, 42S

• 4/1 High Capacity Opposite End Coil - 42C series, 42VA, 42VB, 42VF

• 4/1 High Capacity Same End Coil - 42C series, 42VA, 42VB, 42VF

• 4/2 Same End Coil Connections - 42D

• 4/2 Opposite End Connections - 42D

• 6-Row High Capacity Coil - 42D

• 6/1 Opposite End Connection - 42DA, DC, DE, DF

• 6/1 Same End Connection - 42DA, DC, DE, DF

• 6/2 Opposite End Connections - 42DA, DC, DE, DF

• 6/2 Same End Connection - 42DA, DC, DE, DF

Decorator colors — A wide variety of colors (Champagne Beige, Toffee Brown, Ermine Grey, and Polar White) are available to match any interior décor. Select a desired color from a paint chip chart, Catalog number 842-011, or provide paint chip for matching. Standard color is now Arctic White; the other colors require a special quote. Decorative colors may be applied to:

• Cabinet of 42VB, VF, VE, VG

• Cabinet of 42CG

• Panels 42S

• Bottom Panels of 42CK

• Wall Panels of 42VA

• Cabinet 42DF

Electric heaters — Coils are of high grade single-phase, nichrome resistance wire, insulated by ceramic insulators in plated steel brackets. Heater sizes available are shown in the application data section for the respective units. Not available on 42VG units.

Filters — Each unit (except the 42CA, VG unit) includes a fiberglass throwaway filter sized for low velocity and maximum efficiency. The standard option will filter both returnand outside-air. Optional permanent aluminum filters with cleanable, non-aluminum filter media are available for 42CE, CF, CG, CK, DC, DD, DE, all 42V series, and all 42S series units.

Manual air vents — Each standard coil includes a manual air vent to allow venting at the coil if necessary for quick, complete air elimination.

Outside-air opening/damper — Damper is adjustable from 0 to 25% and provides ventilation air to unit. (Available on 42VA, VB, VF and 42S series units.)

Single power source connection — Provides factoryinstalled junction box to allow use of single power source for motor and heater when they are of the same voltage. For 42D and 42S series units.

Stamped toe space return-air grille — (42VB,VF units.) Tamperproof “Camloc” fasteners — Camloc fasten-

ers are installed on the access panels and are available for all cabinet model units.

Thermostat control packages — The standard thermostat control option is line voltage. Unit-Mounted line voltage and 24V thermostats are available on the 42V series units. For thermostat control package options refer to pages 10-12.

Field-installed accessories

Automatic air vents — Automatic air vents have fiber

washers which allow air in the pipes to pass through, automatically bleeding the system, and eliminating the need to manually remove air from the system. When wet, washers swell and seal the system.

Decorative wall panels — Wall panels are available for use with fully recessed 42VA units.

Drip lips (removable drain extension) — Drip lips are frequently used when valves are added after unit installation and space limitations will not permit use of an extended drain pan. The drip lip is placed on the end of the drain pan and is pitched toward the pan to ensure proper drainage. The drip lip gives positive control of condensate from valves and controls on 42DA, DC units (available as an option on 42DE, DF units). Provided as standard on these units when factory-supplied motorized valve package is ordered. The drip lip is also installed on the 42C series ceiling fan coil units when 2-way or 3-way motorized valve packages are ordered.

Panels, frames, and grilles — Panels, frames, and grilles on the 42S series units can be chosen in a wide variety of combinations to suit room decorating requirements and allow access to the unit for maintenance. Discharge grilles are double deflection type, aluminum finish or painted. Return-air access panels containing return-air grilles are available in five different types as illustrated on page 97.

PANELS, FRAMES AND GRILLES

PANEL

NO.

Standard, 18-gage galvanized steel. Coated with baked-on

Arctic White enamel finish. Attached to unit with fasteners.

18-gage galvanized steel. Coated with baked-on Arctic White

enamel finish. Includes access door for concealed unitmounted controls.

Bar-type extruded aluminum with frame matching double

deflection supply grille. Fastens to wall and unit with 1 long screws.

18-gage galvanized steel. Coated with baked-on Arctic White

and

enamel finish. Frame mounted on sheetrock with screws.

Panel mounted in frame with

All Each panel provides access to all internal components.

DESCRIPTION

/4turn fasteners.

/4turn

/2in.

Options and accessories (cont)

Return-air grilles — Stamped-type return-air grilles are standard on 42C, V, S units. Anodized aluminum hinged bar-type grilles are installed on 42CG, CK and DF (available as an option on 42DA, DC, DE, DD) units.

Risers — The 42S series units can accommodate ¾-in. (supply and return) and 1-in. (drain) to 2½-in. riser sizes in 2-pipe systems. For other applications, such as reverse return risers or 4-pipe systems, it may be necessary to accommodate the additional risers.

Condensate drains are available in sizes down to 1-in. for greater cost economy. Riser size-reducers are factoryinstalled and for risers of over 115-in. length, filler pieces can be furnished for field installation.

Riser expansion — When necessary, the 42S series units are provided with factory-installed expansion loops. These expansion loops provide up to 1 ½-in. of riser expansion within the standard unit construction. This means that the unit can be used on installations of up to 20 floors without any additional expansion devices.

Risers material and insulation — The 42S series unit factory-installed supply, return, and drain risers can be furnished in type M or L copper. All factory-furnished risers are insulated with flexible closed foam insulation in ½-in. or ¾-in. thickness.

Supply-air grilles — Two types of double deflection supply-air grilles are available for horizontal and vertical units; an integral steel grille painted to match the unit or a separate unpainted anodized aluminum grille. Not applicable to 42VG units.

Tell-tale drain pan — A secondary drain connection is located above the primary drain to act as a “tell-tale” in the event that the primary drain becomes obstructed. They can be applied to either the main drain pan or an extended main drain pan. This option only available on the 42C, 42V (except 42VG), and 42DA, DC, DE, DF.

Thermostats control packages — The standard thermostat control option is line voltage. Wall-mounted line voltage and 24-v thermostats are available on the 42 series fan coil units. 24-v thermostat is not available on the 42VC,VE,VG unit. Thermostat control packages options refer to page 10-12.

Trim strips — Strips are available for use with partially recessed vertical 42VA units and 42S only.

Wall boxes — Wall boxes are all aluminum with insect screen behind louvers. The wall boxes are available on all 42V series units except the 42VG units.

DRIP LIP

(Horizontal Unit)

“TELL-TALE” DRAIN PAN

(Horizontal Unit)

AVAILABLE OPTIONS AND ACCESSORIES

FAC TORY-INSTALLED OPTIONS AND

FIELD-INSTALLED ACCESSORIES

AIR VENT

Automatic Air Vent •••••••••••••••• • • • Manual Air Vent Std Std Std Std Std Std Std Std Std Std Std Std Std Std Std Std Std Std Std

CABINET CHANGES

Front Panel, 16 Gage •• Front Panel, 18 Gage Std Std Std Std Std Std Std Std Std Std Std Std Std Std Std Std Std Std Std Extended Cabinet w hen Electric Heat

or Valves are Installed Valve Compartment Extension, 10 in. • Stamped Toe Space Return Gr ille ••

COILS

2-Row (Cooling Only) Std Std Std 3-Row (2-Row Cooling, 1-Row Heating) •• 3-Row (High-Capacity) Std Std Std Std Std Std Std Std • • • • • • • Std S td Std 4-Row (3-Row Cooling, 1-Row Heating) • ••••••• ••••• • • • 4-Row (High-Capacity) • ••••••• StdStdStdStdStd• • • 5-Row (4-Row Cooling, 1-Row Heating) •••••••• ••••• • • • 5-Row (3-Row Cooling, 2-Row Heating) •••••••• ••••• 6-Row (4-Row Cooling, 2-Row Heating) ••••• 6-Row (High-Capacity) ••••• 7-Row (6-Row Cooling, 1-Row Heating) ••••• 8-Row (6-Row Cooling, 2-Row Heating) •••••

DAMP ERS

Manual — Adjustable through Return Air Opening

Manual Adjustment, Remote Mounted ••• • • • Manual — Rear Opening with ••• • • • Sliding Damper — No t Filtered ••• Outdoor Air Connection (6 in.), with

Filter and with or without Damper Damper, Linkage and Motor Wired to

Auxiliary Contact o f 3-Speed Swit ch

DECORATIVE COLORS

(See Carrier Fan Coil Paint Sele ctor Guide)

DISCHARGE GRILLES

Stamped Front Discharge Std Std Std Std Std Double Deflection, Installed •••• Double Deflection, Shipped Loose • • • • Std Std Std Std Std Std Std Std

DRAIN PANS

Sprayed on Closed-Ce ll Foam on Inside Main Drain Pan

Auxiliary Plastic Drain Pan Std Std Std Auxiliary Steel Drai n Pan Std Std AuxiliaryDripLip—Includedwith2-or

3-Way Motorized Valves Tell-Tale, with Second Drain Connection •••••••••• •••• Stainless Steel •••••••••••••••• • • •

DUCT COLLAR

Discharge Std Std Std Std Std Std Std Std Std Std Std Std Std Std Std Std

ELECTRIC HEATERS

Nichrome Wire Strip Heater ••••• ••••• • • • Sheath Type Heater •••••

FAN SW ITC H

Unit-Mounted, Wired and Installed Std Std Std Std S td Std Wall-Mounted with Plate for

Field-Mounting

FILTERS

Permanent Filter •••• ••••• •• • • • •

Throwaway Filter Std Std Std Std Std Std Std Std Std LEVELING LEGS • • • • • Std Std Std Std Std Std Std INSULATION

Foil Faced Insulation •••••••••••••••• • • •

Tuf -S kin II Std Std Std Std Std Std Std Std Std Std Std Std Std Std Std Std Std Std Std

Tuf-Skin RX Insulation •••••••••••••••• • • • MOTORS

120-1-60, 3-Spee d Std Std Std Std Std Std Std Std Std Std Std Std Std Std Std Std Std Std Std

208-1-60, 3-Spee d •••••••••• ••••• • • •

230-1-60, 3-Spee d •••••••••• ••••• • • •

277-1-60, 3-Spee d •••••••••• ••••• • • •

220-1-50, 3-Spee d •••••••••• ••••• • • • MOTOR QUICK-DISCONNECT PLUG Std Std Std Std Std Std Std Std Std Std Std Std Std Std Std Std Std Std OUTSIDE-AIR WALL BOX ••• RETURN AIR GRILLE, Shipped Loose

Stamped Return Grille Std Std Std Std Std Std Std Std Std Std Std Std Std Std

Hinged Panel Std Std • • • Std • TAMPERPROOF LOCKS (Camloc)

Access Panels ••• •• • • •

Access Doors ••• •• VALVE PACK AGE S •••••••••••••••• • • • WALL PANELS (for Recessed Unit) • WIRING PACKAG ES •• •••••••••••••• • • •

• — Available as a Factory-Installed Option or a Field-Installed Accessory Std — Stan dard

AVAILABLE

LEGEND

Ceiling — Horizontal Floor — Vertical Ducted — Horizontal Stack — Vertical

CA CE CG CK CF VA VB VF VC VE VG DA DC DE DF DD SG SH SJ

••• • • •

•••

•• ••• •• • • • •

Std Std Std Std Std Std Std Std Std Std Std Std Std Std Std Std Std Std

••••• StdStd••

Std Std Std Std Std Std Std Std Std Std Std Std Std

UNIT SERIES — 42

••

Controls

Use the Control Selection guide to make sure that all necessary components are provided for and that the components are compatible with the required control system.

NOTE: When thermostatic fan control is selected or when unit outside air dampers are used, unit-mounted thermostats are not recommended as their use will result in poor room temperature sensing.

CONTROL SELECTION GUIDE

SYSTEM DESCRIPTION THERMOSTAT

Fan Control (2-Pipe)

Twoposition electric valves

2-PIPE HEATING-COOLING*

(2-pipe)

Twoposition electric valve with Auxiliary Electric Heat (2-pipe)

Twoposition electric

ELECTRIC HEAT

valve with total electric heat (2-pipe)

Twoposition electric valves (4-pipe)

4-PIPE

*If system is HEATING-ONLY or COOLING-ONLY, no changeover or bypass is required. NOTE: Unit-mounted thermostats are not recommended with either fan-cycle control or applications with outside air dampers.

Fan manually cycled None None None Standard 3-SpeedSWNot recommended

Thermostat cycles fan on-off from speed set with fan switch.

Thermostat cycles fan on-off from fan speed set with switch. Mode automatically switched by changeover sensing water temp.

Thermostat cycles fan from high to low on cooling and low to off on heating.

Thermostat cycles valve open or closed.

Thermostat cycles valve open or closed. Mode automatically switched by changeover sensing water temp.

Thermostat cycles valve open or closed. 2° F after valve closes, thermostat activates electric heater. Heater cannot turn on if hot water is in coil.

Thermostat cycles valve open or closed. Manual changeover switch changes thermostat to heat to activate electric heater.

Thermostat cycles valve open or closed. 2° F after valve closes, thermostat activateselectricheater.

Thermostat cycles cooling and heating valves open or closed.

Thermostat cycles cooling valve open or closed. 2° F after valve closes, thermostat cycles heating valve open or closed.

Wall mounted includes heat-cool switch.

Wall moun ted. Heating/cooling Thermostat

Wall or unit mounted Yes None No Standard 3-Speed

Wall mounted includes heat-cool switch.

Wall or unit mounted. Heating/cooling Thermostat

Wall or unit mounted. Sequenced heating and cooling.

Wall moun ted includes heat-cool switch.

Wall mounted includes heat-cool switch.

Wall or unit mounted. Sequenced heating and cooling

Wall mounted includes subbase with heatcool switch.

Wall or unit mounted. Sequenced heating and cooling.

CHANGEOVER

SUPPLY PIPE

None None Thermostat has inte-

Yes None Standard

None Motorized (N.C.)

Yes Motorized (N.C.)

Ye s . Two Required.

None Motorized 3-way or

None Motorized (N.C.)

VALVE

3-way or 2-way, no bypass required.

3-way or 2-way

Motorized 3-way or 2-way

2-way, no bypass required

3-way or 2-way, no bypass required

3-way or 2-way (requires 2 valves)

gral 3-Speed SW

3-Speed SW

Switch, ON-OFF toggle SW only

Thermostat has integral 3-Speed SW

Standard 3-Speed SW. Others have thermostats with integral 3-Speed SW

Thermostat has integral 3-Speed SW

Standard 3-Speed SW

Thermostat has integral 3-Speed SW

Standard 3-Speed SW. Others have thermostats with integral 3-Speed SW

FA N

SWITCH (SW)

NOTES

for high humidity application

Unit-mounted thermostats provide very poor room temperature control

Best fan cycle control for high humidity applications

Valve packages with belled end(s) for field soldering to coil.

Remote-mounted controls

Standard 3-speed switch — This standard switch has 4

positions: OFF, HIGH, MEDIUM, and LOW. Switch has auxiliary contact that is energized when switch is in HIGH, MEDIUM or LOW position.

Some of the options common with the 3-speed switch are:

1. Unit-mounted switch on Furred-In Vertical Model. (Available as special order on Horizontal Models)

2. Switch without OFF position.

3. Key-operated switch.

Optional remote-mounted thermostat

Line voltage T155 thermostat — Features 50 to 90 F

temperature range, manual 3-speed fan control, mount is a standard 2 x 4 in. box, 4-pipe, 2-pipe and autochangeover applications. Available in vertical or horizontal styles.

Unit-mounted controls

MED

Standard remote-mounted thermostat or optional unit-mounted thermostat

COOL

AUTO

HEAT

24-V Debonair® thermostat — Features large Thermoglow™ display, Neverlost™ memory, Exact Fit™ locking cover, Smart Fan™ dynamic fan speed control, 4-pipe, 2-pipe automatic changeover applications with adjustable dead band. Programmable and non-programmable models available.

Standard 3-speed switch — Switch has OFF, HIGH, MED and LOW positions. Switch is also equipped with auxiliary connection energized when switch is in HIGH, MED or LOW position.

MED

OFF

Combination thermostat/3-speed switch — Includes thermostat for 2-pipe or 4-pipe system and standard 3-speed switch. Thermostat and 3-speed switch are unitmounted in a common electrical junction box. The special combination allows for the fan coil unit to have control for the valve cycle only.

Controls (cont)

Four-pipe thermostat, model TH104 — With this thermostat, heating and cooling are sequenced (automatic changeover) with 6 degree separation between HEATING ON and COOLING ON. The standard temperature range is 60 to 90 F.

Two-pipe thermostat, model TF103 — Single-pole double-throw (SPDT) thermostat has snap action contacts. The standard temperature range is 60 to 90 F.

Automatic changeover (Summer-Winter switch) —

The automatic-changeover thermostat is a single-pole double-throw (SPDT) thermal switch in a moistureproof and dust-proof enclosure. Thermostat mechanism and lead ends are hermetically sealed in a polypropylene enclosure with epoxy resin. Device clamps on coil supply pipe with end snap-on clip.

The set point temperatures are factory set. When water temperature rises above 80 F (approximately), the thermostat switches to the winter cycle. When water temperature drops below approximately 70 F, the thermostat switches to the summer cycle. Switch reset is automatic.

Fan coil control relay board — The fan coil relay board is used in conjunction with the Debonair thermostat or a CCN fan coil controller to regulate a single-speed or multispeed fan. The fan coil relay board can also be used to connect the fan coil controller to a line voltage valve actuator.

The fan coil relay board is factory shipped as a PC board

with four

/2-in. stand-offs attached for field mounting.

NOTE: One fan coil relay board is used for each application. Fan coils with two or more fan motors use a fan coil relay board for each fan motor. A maximum of three fan coil relay boards can be wired to one fan coil control.

G2/(W)

G3/(Y)

COM

FAN

(VALVE)

(COOL)

(HEAT)

MED

AUTOMATIC CHANGEOVER

(Summer-Winter) SWITCH

STEMCO

416-79

L80 8220

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

Same end connection (2 pipe or 4 pipe) — All piping

connections are on the same end (side) of the unit. Controls and electrical connection will be on the end (side) opposite the piping connection.

Standard 2-pipe units will be the same end connection.

Opposite end connection (4-pipe option) — Hot water (HW) piping connections and electrical will be on the end (side) opposite the chilled water (CW) and drain connections.

OPPOSITE END CONNECTION

SAME END CONNECTION

NOTE: Piping determines the hand of the unit.

NOTE: Chilled water piping determines the hand of the unit.

Application data (cont)

System piping

The following diagrams show some common methods used to pipe the 42S series units. Only the 2-pipe systems are shown; however, the methods would be the same for 4-pipe systems.

System 1, the “direct return” system, is the most common. It is economical to install since it supplies and returns the water for a riser column from the same location, at the top or the bottom of a building. This type of riser arrangement does require more attention to individual unit water flow balancing. The risers are normally capped at the end as shown in the diagrams.

System 2, the “reverse return” system, is used to minimize the requirement for individual unit balancing. This system is usually referred to as the self-balancing system. The arrangement of the risers allows the water flow for each unit in a column to be equalized. In the reverse return system both the supply and return mains are located at the top or the bottom of a building requiring an additional return riser to be furnished in the units.

System 3, the “common reverse return” system, typically has the supply and return mains located remotely from each other — such as one at the top and one at the bottom of a building. This eliminates the need for a reverse return riser in the units.

SYSTEM 2 — REVERSE RETURN

SYSTEM 3 — COMMON REVERSE RETURN

SYSTEM 1 — DIRECT RETURN

Risers

Riser diameter is an important consideration in the design of stack series systems. Standard units can accommodate

/4-in. to 21/2-in. riser sizes in 2-pipe systems. For other applications, such as reverse return risers or 4-pipe systems, it may be necessary to accommodate the additional risers.

Riser size is based on the water flow needed for a given tier of units. Unit risers are sized according to the diameter and length requirements as specified by the customer. To determine riser size, water velocity should be limited to 5 to 8 ft/second. Thus, if 10 units are to be stacked vertically with each unit requiring 3 gpm, the maximum flow in the risers is 30 gpm. Through 1 of 7.5 ft/second. The maximum flow rate of 30 gpm occurs only at the supply and return points. As the water moves upward, the flow in the supply riser is reduced by 3 gpm per floor, so that after 3 floors, the total flow is 21 gpm and riser size can be reduced to one inch. See chart on page 103.

/4 in. risers, this is a velocity

Condensate drains are available in sizes down to one

inch for greater first cost economy.

Riser size-reducers are factory installed and caps are pro-

vided at customer request.

For risers of over 115 in. length, filler pieces can be fur-

nished for field installation.

Typical arrangements

Typical arrangement applications for each model type are shown below. The fan coil units feature almost an unlimited number of arrangements to meet the needs of new construction, renovation, or reconstruction. Consult the factory for the arrangement (standard or special) to meet your particular need.

42SH — EXPOSED CABINET

42SG — FURRED-IN STACK

42SJ — BACK-TO-BACK FURRED-IN STACK

42SG — FURRED-IN STACK MASTER/SLAVE UNIT

Application data (cont)

PIPING COMPONENTS

SYMBOL/SKETCH DESCRIPTION

MANUAL AIR VENT: Threaded brass needle

valve with screwdriver slot for adjustment. Application — Body brazed into high point of

heating and cooling coils for bleeding air from coil. Standard item on all hydronic coils (not used on steam or DX coils). Should not be used in lieu of main system 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 with water, completely sealing the valve. As air accumulates, the fiber discs dry and shrink, repeating 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.

Application — Used where possible for all tubing joints for best joint integrity.

UNION: Combination wrought copper/cast brass union assembly, solder by solder.

Application — Used for quick connect (and disconnect) of valve package components to minimize field labor and facilitate servicing of unit.

INSERTION TEST PORT: Brass body valve for acceptance of test probe (up to diameter).

Application — Installed on one (or both) sides of the coil to allow for temperature or pressure sensing. Used for close tolerance water balancing and service analysis.

/8in.

CVFACTOR RATING*

PSI F

STEAM

USE

N/A N/A 400 100 NO

N/A N/A 125 240 NO

N/A N/A 300 200 YES

N/A N/A 250 250 NO

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.

PIPING COMPONENTS (cont)

SYMBOL/SKETCH DESCRIPTION

PRESSURE TEST PORT: Brass body

vice access fitting with removable depressor type core.

Application — Installed on both sides of the coil to allow for pressure sensing. Attach pressure gages to facilitate close tolerance water balancing.

GAGE COCK: Brass shut-off valve with

/4FPT fitting for attachment of pressure

gages. Application — Installed on both sides of the

coil to allow for pressure sensing. Attach pressure gages to facilitate close tolerance water balancing. May be used in bleed bypass line to regulate water flow.

CIRCUIT SETTER: Variable water flow balancing valve with manual adjustment knob, pointer, percent-open scale, memory stop and integral pressure read-out ports.

Application — Used for close tolerance water flow balancing. Positive shut-off ball valve feature allows usage as combination balancing and shut-off valve.

BALANCE VALVE: Varia ble water flow man ual balancing valve with screwdriver slot adjustment screw.

Application — Often used in conjunction with test port fittings for water flow balancing. Balance by temperature differential or coil pressure drop (check specifications for service fittings required if balancing by pressure drop). May be used in 3-way valve bypass line to permit equal flow balancing.

FIXED FLOW VALVE: Flexible orifice type (non-adjustable).

Application — Used for water flow balancing. Valve automatically adjusts the flow to within 10% of set point. Requires 15 psi (35 ft) of additional pump head for proper

FLOW

operation.

/4ser-

FACTOR RATING

PSI F

N/A N/A 400 210 NO

N/A N/A 200 250 N/A

2.12 3.9 300 250 NO

3.0 8.9 150 200 NO

Valve orifice size determines C

factor. The orifice of these fixed flow valves changes as flow is regulated. As the water pressure increases, the orifice size

150 160 NO

decreases, thereby automatically limiting the flow rate to the specified gpm (±10%).

STEAM

USE

LEGEND

Cv — Coefficient of Velocity DX— Direct Expansion

Application data (cont)

PIPING COMPONENTS (cont)

SYMBOL/SKETCH DESCRIPTION

STRAINER: Y-type body with 50 mesh stain-

less steel screen. Application — Used for removal of small parti-

cles from system water during normal system operation. Should not be used in lieu of main system strainers. Strainer screen may have to be removed during initial high pressure system flushing during start-up. Screen should be removed and cleaned per normal maintenance schedule (provisions for strainer blowdown not provided).

GATE VALVE: Manual shut-off valve. Application — Used for unit isolation during

system flushing, servicing, etc. Do not use for water balancing.

GLOBE VALVE: Standard pattern, manual shut-off and throttling valve.

Application — Used for unit isolation. Not recommended for high flow rates due to relatively high pressure drop.

FACTOR RATING

9.0

Clean

19.0

Clean

PSI F

400 250 N/A

STEAM

USE

19.8 36.0 200 200 NO

1.8 3.9 200 200 NO

LEGEND

Cv — Coefficient of Velocity DX— Direct Expansion

COMPRESSION STOP VALVE:

Manual shut-off valve. Application — Used for unit isolation during

system flushing, servicing, etc. Not recommended for high flow rates due to relatively high pressure drop.

BALL VALVE: Manual balance and shut-off valve.

Application — Used for unit isolation and water flow balancing. Without memory stop feature water balance point must be marked by installer (if necessary). Check specifications for service fittings required when used for water balancing.

BALLVALVEWITHMEMORYSTOP:

Manual balance and shut-off valve. Application — Used for unit isolation and

water flow balancing. The adjustable memory stop feature allows return to the balance point after shut-off. Check specifications for service fittings required when used for water balancing.

2.3 5.4 150 200 NO

4.0 7.5 400 200 YES

4.0 7.5 400 200 N/A

PIPING COMPONENTS (cont)

SYMBOL/SKETCH DESCRIPTION

2-WAY MOTORIZED VALVE: Electric 2-posi-

tion flow control valve (open/closed). Normally closed body with manual override lever. Installedinsupplylinetounit.

Application — All standard control and valve packages are based upon normally closed valves (valve electrically powered open and closed by spring return when electric power removed). Manual override lever allows valve to be placed in the open position for secondary (unit) flushing, constant water flow prior to start-up, etc. Manual override is automatically disengaged when valve is electrically activated. Consult factory for normally open

valve applications.

3-WAY MOTORIZED VALVE: Electric

2-position flow control valve (closed to coil/ open to bypass or open to coil/closed to bypass). Normally closed with manual override lever. Installed in supply line to unit.

Application — Same comments as 2-way motorized valve except with manual override lever engaged the valve is open to both ports and water flow will take the path of least resistance through the valve package (not necessarily 100% through the coil).

FACTOR RATING

PSI F

2.3 2.3 300 200

5.0 5.0

SERVICE

2.8 2.8

BYPASS

300 200 N/A

STEAM

USE

YES

PSI

MAX.

MODULATING VALVE (Non-Spring Return): Modulating valves are

designed to control the flow in the circuit by making incremental adjustments to the flow path within the valve.

Application — To control fluid flow in fan coil units.

MODULATING VALVE (Spring Return): Modulating valves are

designed to control the flow in the circuit by making incremental adjustments to the flow path within the valve. Application — Same comments as non-spring return except when powered, the actuator moves to the desired position, at the same time tensing the spring return system. When power is removed for more than two minutes the spring returns the actuator to the normal position.

AQUASTAT: Water temperature sensing electrical switch.

Application — Clips directly on nominal

/2in. or3/4in. copper tubing for water

size temperature sensing. Must be correctly located for proper control operation.

LEGEND

Cv — Coefficient of Velocity DX— Direct Expansion

NOTES:

1. Motorized 2-way valves have a maximum close-off differential of 25 psi.

2. Motorized 3-way valves have a maximum close-off differential of 10 psi.

4.0

300 200 N/A

Application data (cont)

Valve p acka g es

There are limitations on physical size of pneumatic valves, quantity and type of matching components, and required control interface. See Symbols and Placement of Valves diagram.

Consult factory before ordering any special valve pack-

age components that are not covered in this book.

SYMBOLS AND PLACEMENT OF VALVES

Valve packages are shipped with the units or in unit cartons. Valve packages include belled ends for field soldering to coil connections.

All factory-furnished cooling valve packages are arranged to position as much of the package as possible over an auxiliary drain pan or drip lip. This helps minimize field piping insulation requirements.

Coil Connections (Positions A & B) — When isolation valve only is added to supply or return line, the isolation valve will be factory brazed to the coil stub-out. Addition of any other component or connection to the supply or return line will change the respective coil connection(s).

Service Fittings (Positions C & D) — Optional fittings for attaching pressure/temperature sensing devices to obtain pressure drop or temperature differential across coil. Used with ball valve or balance valve where extremely accurate water flow balancing is required.

Water Flow Balancing (Positions E, F, & H) — Only one device per total valve package to be used for balancing water flow through the coil. When isolation valve (ball valve or ball valve with memory stop at position H) is used for water flow balancing, do not specify additional balancing device at position E or F. When balancing device is specified at position E or F, isolation valve does not require balancing feature at position H (with a 3-way motorized valve, a bypass balancing valve may be specified in the bypass line to permit equal flow balancing).

Strainer (Position G) — Does not include blow down fitting and should not be used in lieu of main piping strainers. Isolation Valves (Positions H & J) — Normally requires one each on supply and return line (see exception under circuit setter). When

position H is used for balancing (ball valve or ball valve with memory stop), check specifications for service valve requirements.

VALVE PACKAGE ARRANGEMENTS

LEGEND

Ball Valve

Ball Valve with Memory Stop

Gate Shut Off Valve

Balancing Valve

Circuit Setter

Motorized 2-Way Valve

Motorized 3-Way Valve

*When aquastat is used for automatic changeover, bypass is

required as indicated by dashed line.

NOTES:

1. Packages factory furnished and installed.

2. Valves are

3. If an automatic flow control valve is added, it will be located on supply line between shutoff valve and coil (or motorized control valve, if supplied).

4. Packages 17-A,B,C,D,E,F,G,H,J,K,L,M,N and P are listed on current price pages.

/8-in. ODS unless otherwise specified.

Application data (cont)

Cv FACTOR VS WATER PRESSURE DROP

CVFAC TOR :

The flow rate in gallons per minute (gpm) through a piping component when the pressure drop (∆P) in pounds per square inch (psi) across the component is 1.0 (psi).

Pressure drop (ft-H

O) = 2.31 x psi (pressure drop)

GRAPH EXAMPLE:

∆P for 2.0 gpm through a component with a C

FORMULA EXAMPLE:

∆P(ft-H

O) =

(gpm)

)

x2.31=

(2.0) (1.0)

TOTAL PRESSURE DROP is the Sum of the pressure drop of all piping and components in the water flow path.

of 1.0 is 4.0 psi x 2.31 = 9.24 ft-H2O

x 2.31 = 9.24 ft-H2O

ENTHALPY AT SATURATION

TEMPERATURE

(F)

40 15.230 60 26.46 41 15.697 61 27.15 42 16.172 62 27.85 43 16.657 63 28.57 44 17.149 64 29.31 45 17.650 65 30.06 46 18.161 66 30.83 47 18.680 67 31.62 48 19.211 68 32.42 49 19.751 69 33.25 50 20.301 70 34.09 51 20.862 71 34.95 52 21.436 72 35.83 53 22.020 73 36.74 54 22.615 74 37.66 55 23.22 75 38.61 56 23.84 76 39.57 57 24.48 77 40.57 58 25.12 78 41.58 59 25.78 79 42.62

ENTHALPY AT

SATURATION

(Btu per lb.

of dry air)

TEMPERATURE

(F)

80 43.69

ENTHALPY AT

SATURATION

(Btu per lb

of dry air)

ALTITUDE COOLING CORRECTION FACTORS STEAM PRESSURE CORRECTION FACTORS

ELEVATION (ft) TOTAL HEAT SENSIBLE HEAT

1000 .990 .960 2000 .980 .930 3000 .970 .896 4000 .960 .864 5000 .940 .830 6000 .930 .800 7000 .920 .770 8000 .910 .750 9000 .900 .730

ENTERING AIR

TEMP (F)

40 1.202 1.265 50 1.134 1.196 60 1.067 1.125 70 1.000 1.054

NOTE: Steam Heating Capacity (Btuh) = Base Capacity x Pressure Correction Factor x SH (SH value found in Cooling Capacity Correction Factors table on page 60).

STEAM PRESSURE (PSIG)

AIRFLOW CORRECTION FACTORS

CFM RATIO

(Actual/Base)

1.40 1.25 1.26

1.35 1.22 1.23

1.30 1.19 1.20

1.25 1.16 1.17

1.20 1.13 1.14

1.15 1.10 1.11

1.10 1.07 1.08

1.05 1.04 1.04

1.00 1.00 1.00

0.95 0.97 0.97

0.90 0.94 0.93

0.85 0.90 0.89

0.80 0.86 0.85

0.75 0.82 0.81

0.70 0.78 0.77

0.65 0.74 0.72

0.60 0.70 0.67

0.55 0.66 0.62

0.50 0.62 0.57

0.45 0.58 0.52

0.40 0.53 0.47

0.35 0.48 0.42

0.30 0.43 0.38

0.25 0.38 0.33

LEGEND

CFM — Cubic Feet per Minute Cs — Sensible Airflow Correction Factor Ct — Total Airflow Correction Factor ESP — External Static Pressure

TOTAL (Ct) SENSIBLE (Cs)

Application data (cont)

Electric heat

Electric heaters are available for installation on Carrier fan coil units in the following applications.

Total electric heat — This system provides complete heating during the heating season; no boiler is required. Heating and cooling are now available on an individual basis throughout the year with a 2-pipe system.

Chilled water is used for cooling and the electric heater is used for heating. Individual room controls can be supplied for either manual or automatic changeover.

Auxiliary electric heat — This system is used for heating between seasons or during the cooling season when chilled water is being circulated. Individual room controls are supplied to provide electric heat only when chilled water is being circulated through the system. Water flow through the unit is shut off when the heater is turned on.

During the winter heating season, heating is provided by hot water circulated through the system. A changeover device locks out the electric heat when the hot water is circulated.

Heater construction

Strip heaters are used with Model 42C ceiling units,

Model 42D ducted units and Model 42S stack units.

These heaters consist of coils of the highest grade resistance wire, insulated by ceramic insulators in aluminized brackets.

All heaters except those used in 42S stack units are positioned on the incoming (preheat) side of the unit coil. On

42S stack units, the strip heater is located in the fan discharge on the leaving side of the coil.

Sheath heaters are used with Model 42V vertical units. These heaters consist of the highest grade resistance wire, centered in a The wire is insulated from the sheath by magnesium oxide powder packed around it. To increase the heater surface exposed to air, a 1 wound around the sheath in a continuous spiral that makes 5 turns per lineal inch. Sheath and fin are permanently bonded together by copper brazing.

The heaters are positioned on the leaving (reheat) side of the unit coil. On special units with high efficiency motors, a strip heater will be installed in the fan discharge on the incoming (preheat) side of the unit coil.

/2-in. diameter copper-plated steel sheath.

/4-in. OD fin of copper-plated steel is

Heater electrical data

1. Load voltage may be 120, 208, 240 or 277 volts. For

unit size and kW limitations, refer to the specific unit catalogs.

2. All heaters are single stage and single phase.

3. Unless a single power-source option is selected, the

electric heat units require 2 separate power sources. With the single power-source option, only one line circuit need be brought into the unit. Fuse protection is added to the motor/control circuit to protect these components. This is separate from the field-furnished total unit overcurrent protection.

MODEL 42V VERTICAL UNIT WITH ELECTRIC SHEATH HEATER

MODEL 42C CEILING UNIT WITH ELECTRIC STRIP HEATER

42C SERIES

42D SERIES

HEATER

VOLTAGE

120

208, 240,

277

240,277 10.0 34,150 *

CAPACITY

(Btuh)

0.5 1,708 * *

1.0 3,415 * * *

1.5 5,123 * *

2.0 6,830 * * * * * * *

3.0 10,245 * * * *

0.5 1,708 * *

1.0 3,415 * * *

1.5 5,123 * *

2.0 6,830 * * * * * * *

3.0 10,245 * * * *

4.0 13,660 * * * *

5.0 17,075 * *

6.0 20,490 * * * *

8.0 27,320 * *

02 03 04 06 08 10 12

UNIT SIZE

42V SERIES

HEATER

VO LTAGE

120

208, 240,

277

240,277 6.0 20,490 *

NOTE: All heaters are single-stage and single-phase. Contact your Carrier representative for heater availability for 220-1-50 units.

CAPACITY

0.5 1,708 * *

1.0 3,415 * * * *

1.5 5,123 * * *

2.0 6,830 * * *

3.0 10,245 ****

1.0 3,415 * * * *

1.5 5,123 * * *

2.0 6,830 * * *

3.0 10,245 ****

4.0 13,660 * * *

5.0 17,075 * *

(Btuh)

02 03 04 06 08 10 12

UNIT SIZE

HEATER

VO LTAGE

120

208, 240,

277

NOTE: All heaters are single-stage and single-phase.

CAPACITY

(Btuh)

2.0 6,830 * * *

3.0 10,245 * * *

2.0 6,830 * * *

3.0 10,245 * * *

4.0 13,660 ********

5.0 17,075 *******

6.0 20,490 *******

7.0 23,905 ******

8.0 27,320 *****

9.0 30,735 *****

10.0 34,150 ****

12.0 40,980 * * *

14.0 47,810 *

06 08 10 12 14 16 18 20

UNIT SIZE

42S SERIES

HEATER

VOLTAGE

120

208

240,

277

10.0 * *

03 04 06 08 10 12

1.0******

1.5******

2.0******

3.0******

1.0******

1.5******

2.0******

3.0******

4.0 *****

5.0 ****

6.0 ***

8.0 ***

1.0******

1.5******

2.0******

3.0******

4.0 *****

5.0 ****

6.0 ***

8.0 ***

UNIT SIZE

Selection procedure

Refer to the Carrier Electronic Selection Program for information to determine unit sizing for your needs. The following selection procedure applies to all Carrier 42 series units and may be used as a guide to determine unit performance.

FORMULAS

TC = TC SC = SCb x Cs x E

x Ct x E

Where: C

= Sensible Airflow Correction Factor

= Total Airflow Correction Factor

= Sensible Elevation Correction Factor

= Total Elevation Correction Factor

SC = Sensible Capacity

= Base Sensible Capacity from Base Cooling

Capacities by Gpm charts TC = Total Capacity TC

= Base Total Capacity from Base Cooling

Capacities by Gpm charts

QUICK SELECTION

EXAMPLE:

To rate the performance at sea level for a 42DCA06 unit with four-row coil at 80 F/67 F EAT, 45 F EWT, and 10 gpm water flow at high speed fan with 0.25 in. wg ESP:

1. Enter the Base Cooling Capacities by Gpm, Standard Capacity Units (Four Row) table on page 77 at 80 F/ 67 F EAT and 45 F EWT.

2. Locate the appropriate row for unit size 06 and 10 gpm.

Record the tabulated base performance.

= 21.5 MBtuh

= 15.2 MBtuh

∆T = 4.3° F

3. Select the actual cfm from the Air Delivery table on page 82.

Record actual cfm for 42DCA06 with four-row coil with high speed and 0.25 in. wg ESP.

Cfm Actual = 580

4. Divide Cfm Actual by Cfm Nominal to determine Cfm Ratio.

Cfm Ratio = 580/600 = .967

5. Select the cfm correction factors, C

and Cs, from the

Airflow Correction Factors table on page 23. (Interpolation may be required.)

= 0.98

6. Select the elevation correction factors, E

and Es, from

the Altitude Correction Factors table on page 23. E

= 1.00

7. Calculate actual performance. TC = TC

x Ct x E

= 21.5 x 0.98 x 1.00 = 21.1 MBtuh

SC = SC

x Cs x E

= 15.2 x 0.98 x 1.00 = 14.9 MBtuh

8. Calculate water pressure drop. From the Cv Factor by Coil and Unit Size table on page 86, find the Cv value for unit size 06 with four rows.

Cv = 4.00 ∆P = [GPM/(0.658 x Cv)

= [10.0/(0.658 x 4.00)

= 14.4 feet of H2O

Model number nomenclature

42CAA03ARCY5––––

42 – Series Fan-Coil Unit

Model Vertical Units VA – Furred-In VB – Cabinet VC – Furred-In Lowboy VE – Cabinet Lowboy VF – Slant-Top Cabinet VG – Furred-In Wall Unit Ceiling Units CA – Furred-In CE – Furred-In with Plenum CF – High Static, Furred-In CG – Cabinet CK – Telescoping Bottom Panel

Design Series (A or B*)

Unit Size (Airflow, cfm) 01 – 150 (42VG Only) 06 – 600 02 – 200 08 – 800 03 – 300 10 – 1000 04 – 400 12 – 1200

Coil A–3 Row (Standard)

2 Row (VC, VE, VG Standard)

B–4 Row High Capacity

3 Row High Capacity (VC, VE Only)

C–3/1 Opposite End Connection

2/1 Opposite End Connection (VC, VE Only)

D–3/1 Same End Connection

2/1 Same End Connection (VC, VE Only)

E–3/2 Opposite End Connection F–3/2 Same End Connection G–4/1 Opposite End Connection H–4/1 Same End Connection

Arrangement 42V: 5–Front Return, Top Supply 7–Front Return, Front Supply 42C: 5–Bottom Return, Front Supply 6–Rear Return, Front Supply

Electric Heaters Y–None A-Z, 1 – 42V A-Z, 1-9 – 42C

Motor C–120V Permanent Split Capacitor (PSC) (Standard) D–208/1/60 PSC E–230/1/60 PSC F–277/1/60 PSC V–220/1/50 PSC

Hand R–Right L–Left

42C,V Series Units

*Model 42CG only.

ARI capacity ratings

The 42C, V series fan coil units are certified in compliance with the Air Conditioning and Refrigeration Institute (ARI) Industry Standard 440-98 for room fan coil units. Approved standard ratings are tabulated below:

ARI APPROVED STANDARD RATINGS*

42C,V Series Units

GPM — Gallons per minute MBtuh — Capacity (Btuh in thousands)

*Ratings based on motor at high fan speed, standard air and dry coil oper-

ation, 10° F water temperature rise; entering-air temperature 67 F wb; 80 F db; entering water temperature 45 F.

†Motor type permanent split capacitor operating at 115-1-60 voltage.

**Shaded pole motor.

UNIT

42CA,CE,CG,CK

42CF

42VA,VB,VF

42VG

42VC,VE

LEGEND

UNIT SIZE

02 03 300 1.8 9.0 6.9 85 04 400 2.5 13.3 10.3 165 06 600 3.6 18.0 14.6 225 08 800 4.6 22.6 16.9 235 10 1000 5.5 27.5 21.0 305 12 1200 6.6 32.8 25.0 435

02 03 300 2.1 9.8 6.5 85 04 400 2.8 13.8 9.8 145 06 600 4.0 19.6 14.3 220 08 800 5.1 25.5 18.8 235 10 1000 6.2 31.0 23.0 300 12 1200 7.5 37.2 27.7 425

04 06 600 4.4 21.8 16.0 205 08 800 5.3 26.5 19.6 225 10 1000 7.5 37.2 27.6 355

02 03 300 1.5 7.2 5.3 80 04 400 2.4 11.2 7.9 130 06 600 3.0 13.9 10.4 180 08 800 4.0 19.1 13.5 210 10 1000 4.8 22.0 16.8 240 12 1200 5.3 26.3 20.0 370

02 03 300 2.0 9.9 7.0 80 04 400 2.7 13.1 8.6 130 06 600 3.8 18.6 13.6 170 08 800 4.2 20.6 14.1 195 10 1000 5.9 29.5 19.6 240 12 1200 7.8 35.3 26.3 370

01 03 300 1.5 5.2 4.7 225**

02 03 300 2.0 8.6 6.7 135 04 400 2.6 12.3 8.3 150 06 600 3.6 18.3 13.2 260

02 03 300 2.4 10.9 7.1 130 04 400 3.0 13.4 8.8 145 06 600 4.1 21.1 14.6 250

COIL

ROWS

NOMINAL

CFM

200 1.2 6.0 4.6 50

200 1.4 6.9 5.0 50

400 3.2 16.0 11.6 170

200 1.0 4.8 3.5 50

200 1.4 6.6 4.1 50

150 0.6 2.1 1.6 115**

200 1.2 5.1 3.6 68

200 1.3 5.5 3.8 68

GPM

COOLING CAPACITY

Tota l

MBtuh

Sensible

MBtuh

INPUT (WATTS)†

POWER

Sound data

42CA,CG,CE,CK SOUND RATINGS — OCTAVE BAND POWER LEVEL RATINGS* (dB)

SOUND POWER DATA

SIZE

02 200

03 300

04 400

06 600

08 800

10 1000

12 1200

*Testing per ARI Standard 350-86.

NOMINAL

CFM

High 1130 59 58 59 57 52 49 46 Medium 1060 54 54 55 51 42 42 41 Low 940 45 49 51 47 43 37 33 High 1125 61 59 61 58 54 51 47 Medium 1025 55 54 54 51 46 42 41 Low 925 43 48 49 46 42 36 31 High 1400 62 61 62 59 55 51 46 Medium 905 54 54 54 50 46 41 26 Low 725 49 48 47 42 34 — — High 1525 63 62 63 60 56 53 48 Medium 1100 55 54 54 51 47 41 31 Low 690 51 50 49 44 36 — — High 1500 66 66 67 64 60 58 53 Medium 1045 59 56 59 55 47 42 37 Low 675 51 51 50 46 38 — — High 1365 73 70 71 68 64 62 58 Medium 785 62 60 61 57 51 48 46 Low 700 56 56 57 52 46 40 34 High 1540 78 75 76 73 68 67 63 Medium 1155 68 67 68 64 59 56 54 Low 740 59 60 60 56 50 43 37

SPEED RPM

CENTER FREQUENCY — Hz

125 250 500 1000 2000 4000 8000

42C,V Series Units

42CF SOUND RATINGS — OCTAVE BAND POWER LEVEL RATINGS* (dB)

SIZE NOMINAL CFM SPEED RPM

High108562656563585447

04 400

06 600

08 800

10 1000

*Testing per ARI Standard 350-86.

Medium98060626260565143 Low 840 57 59 59 56 51 46 37 High107562656563585447 Medium95560626260565143 Low 740 57 59 59 56 51 46 37 High104562656563585447 Medium86560626260565143 Low 715 57 59 59 56 51 46 37 High110062656563585447 Medium 1015 60 62 62 60 56 51 43 Low 900 57 59 59 56 51 46 37

CENTER FREQUENCY — Hz

125 250 500 1000 2000 4000 8000

Sound data (cont)

42VA,VB,VF SOUND RATINGS — OCTAVE BAND SOUND POWER LEVEL RATINGS* (dB)

SOUND POWER DATA

SIZE

02 200

03 300

04 400

42C,V Series Units

06 600

08 800

10 1000

12 1200

*Testing per ARI Standard 350-86.

NOMINAL

CFM

SPEED RPM

High 1130 63 58 53 46 40 34 25 Medium 1090 58 57 51 45 39 32 — Low 1025 61 57 50 44 37 30 — High 1120 65 60 54 48 42 35 26 Medium 1070 60 59 53 47 41 34 — Low 1000 63 59 52 46 39 32 — High 1520 66 67 64 58 50 45 39 Medium 1085 58 60 53 47 40 32 — Low 840 52 55 47 40 33 — — High 1625 67 68 65 59 53 48 42 Medium 1310 61 62 56 52 46 40 — Low 825 54 56 48 41 34 — — High 1610 68 68 65 60 55 51 44 Medium 1300 63 64 59 54 50 45 36 Low 820 55 56 49 43 37 28 — High 1530 68 69 65 61 54 49 44 Medium 1095 66 66 60 56 50 45 38 Low 850 58 58 52 46 38 31 — High 1625 70 71 67 63 56 51 46 Medium 1310 69 69 63 59 53 48 42 Low 830 60 61 54 48 41 34 —

125 250 500 1000 2000 4000 8000

CENTER FREQUENCY — Hz

42VC,VE SOUND RATINGS — OCTAVE BAND SOUND POWER LEVEL RATINGS* (dB)

SIZE

02 400

03 600

04 800

06 1000

*Testing per ARI Standard 350-86.

NOMINAL

CFM

SPEED RPM

High 1325 60 63 60 56 53 50 47 Medium 890 53 53 51 46 43 38 32 Low 655 50 48 43 38 33 — — High 1570 64 67 63 60 56 54 50 Medium 1205 56 58 53 50 47 43 37 Low 835 49 51 47 41 36 29 — High 1520 65 68 64 61 57 55 51 Medium 1105 57 59 54 51 48 44 38 Low 765 50 52 48 42 37 30 — High 1575 66 67 63 61 56 53 50 Medium 1205 58 58 55 53 48 43 37 Low 835 51 50 47 44 38 30 —

125 250 500 1000 2000 4000 8000

CENTER FREQUENCY — Hz

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