Carrier 52S series Manual de usuario descargar pdf (Pagina 41)

PACKAGED TERMINAL COOLING UNIT

WITH HEAT PUMP OR ELECTRIC HEATING

HVAC Guide Specifications

Size Range: Cooling: 7,100 to 13,700 Btuh

Heating: 6,100 to 11,000 Btuh Heat Pump

6,400 to 17,000 Btuh Electric

Carrier Model Numbers: 52SC Cooling

Only Unit

52SE Unit with

Electric Heat

52SQ Heat Pump

Part 1 — General

1.01 SYSTEM DESCRIPTION

Single piece, thru-the-wall electrically controlled unit

using hermetic rotary compressor for cooling and heat

pump or electric resistance heat, as shown on the con-

tract drawings.

1.02 QUALITY ASSURANCE

Unit shall be rated in accordance with ARI Standard

310/380-93 and certified by UL and UL, Canada.

1.03 DELIVERY, STORAGE, AND HANDLING

Unit shall be stored and handled per manufacturer’s

recommendations.

Part 2 — Products

2.01 EQUIPMENT

A. General:

Factory-assembled, single-piece heating and/or

cooling unit. Contained within the unit enclosure

shall be compressor, coils, fans and fan motor, heat-

ing means, controls, all wiring and piping, and a

full refrigerant charge (R-22).

B. Front Panel (supplied with unit) and Wall Sleeve:

Wall sleeve and front panel shall be of plastic mate-

rial. Front panel to have louvers in front surface.

C. Fans and Motor:

1. Evaporator (indoor) fan shall be a single-inlet

squirrel cage blower with a corrosion-resistant

finish, discharging air upwards. Fan shall be

dynamically balanced.

2. Condenser (outdoor) fan shall be a propeller

type with corrosion-resistant finish, discharg-

ing air out the rear of the unit, and shall be

dynamically balanced.

3. Motor shall be totally enclosed, permanently

lubricated, and multiple speed.

D. Compressor:

The compressor shall be fully hermetic with inter-

nal and external vibration isolation.

E. Coils:

The coils shall have aluminum plate fins mechani-

cally bonded to seamless copper tubes internally

enhanced (grooved) with all joints brazed.

F. Refrigerant Components:

All piping, compressor, and expansion devices shall

be included.

G. Controls and Safeties:

1. Controls shall consist of pushbutton OFF/

FAN/ HEAT/COOL adjustable thermostat with

upper and lower limits, VENT OPEN/CLOSE,

and FAN CYCLE switches. Additional con-

trols for heat pumps include outdoor coil

defrost thermostat.

2. Safeties shall consist of automatic reset over-

temperature and overcurrent protection for

compressor,

inherent, automatic reset over-

temperature protection for

fan motor;

two

overtemperature protectors for

heater.

H. Operating Characteristics:

Unit shall be capable of starting and running at

115 F ambient outdoor temperature per maximum

load criteria of ARI Standard 310. Compressor with

standard controls shall be capable of operation

down to 25 F ambient outdoor temperature for heat

pump and 55 F ambient outdoor temperature for

cooling.

I. Electrical Requirements:

230/208-Volt: Shall be prewired with one plug to

use with appropriate wall receptacle as specified on

unit nameplate.

265-Volt: Shall be hard-wired or cord-connected

through subbase.

J. Filter:

1. One-piece washable type that filters supply air.

2. One-piece washable type filter in vent door fil-

ters outdoor air.

K. Corrosion Protection (CP):

Corrosion Protection (CP), for coastal or corrosive

environments, prolongs the life of the product. Min-

imum requirements are:

1. All outdoor-exposed sheet metal parts shall be

coated with a polyester thermostat powder coat

paint.

2. Compressor and outdoor fan motor finish shall

be capable of withstanding 500 hours of salt

spray testing per ASTM B-117.

3. Compressor mounting screws shall be Serma-

gard coated.

4. Outdoor coil fin stock shall be coated and able

to withstand 1000 hours of salt spray testing

per ASTM B-117.

5. Outdoor coil tube sheets must be made of 316L

stainless steel.

GUIDE SPECIFICATIONS

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