Carrier 40MBQB12C--3 Hoja de especificaciones descargar pdf (Pagina 31)

GUIDE SPECIFICATIONS

HORIZONTAL DISCHARGE OUTDOOR UNITS

Size Range:1 1/2, 2 1/4, 3 and 4 Ton Nominal Cooling and Heating Capacity

Carrier Model Number: 38MG

PART1–GENERAL

1.01 System Description

A. Outdoor air-cool ed split syste m compr ess or se cti ons sui tabl e for

on- the- ground, roof top, wa l l hung or balcony mounting. Unit s

shall consist of a variable speed rotary compressor, an air- cooled

coil, propell er- type draw- through outdoor fa n, re vers i ng val ve,

accumulator, electronic expansion valves, multiple service valves,

and controls that allows multiple indoor unit s to be connect ed to

the outdoor unit. Units shall discha rge hori zonta l ly as show n on

the cont rac t dra wings. Uni t s sha ll func t ion as the outdoor

com ponent of an air- to- air hea t pump system.

B. Units shall be used in a refrigeration circuit matched to two,

three, four , or five multi style heat pump fan coil units.

1.02 Agency Listings

A. Unit construction shall comply with ANSI/ASHRAE 15, latest

revision, and with NEC.\

B. Units shall be evaluated in accordance with UL standard 1995.

C. Units shall be listed in CEC directory .

D. Unit cabinet shall be capable of withstanding 500-hour salt

spray test per Federal Test Standard no. 141 (method 6061).

E. Air-cooled condenser coils shall be leak tested at 550 psig.

1.03 Delivery, Storage, And Handling

Units shall be shipped in one piece and shall be stored and handled

per manufacturer’s recommendations.

1.04 Warranty (For Inclusion B y Specifying

Engineer)

PART 2 – PRODUCTS

2.01 Equipment

A. General:

Factory assembled, single piece, air-cooled outdoor unit. Contained

within the enclosure shall be all factory wiring, piping, controls,

and compressor.

B. Unit Cabinet:

1. Unit cabinet shall be constructed of galvanized steel,

bonderized and coated with baked-enamel finish on inside

and outside.

2. Unit access panel should be removable with minimal screws

and shall provide full access to the compressor, fan, and

control components.

3. Outdoor compartment shall be isolated and have an acoustic

lining to assure quiet operation.

C. Fans:

1. Outdoor fans shall be direct-drive propeller type, and shall

discharge air horizontally. Fan shall draw air through the

outdoor coil.

2. Outdoor fan motors shall be multi- speed, totally-enclosed,

single phase motors with permanently lubricated ball

bearings. Motor shall be protected by internal thermal

overload protection.

3. Shaft shall have inherent corrosion resistance.

4. Outdoor fan openings shall be equipped with metal/mesh

PVC coated protection grille over fan.

D. Compressor

1. Compressor shall be fully hermetic variable speed rotary

type.

2. Compressor shall be single phase, inverter driven.

3. Compressor shall be equipped with oil system, operating oil

charge, and motor.

4. Motor shall be suitable for operation in refrigerant and oil

atmosphere.

5. Compressor assembly shall be installed on rubber vibration

isolators.

6. The inverter and compressor shall be protected against over

temperature and over current.

E. Outdoor Coil:

Coil shall be constructed of Aluminum fins mechanically bonded

to seamless copper tubes, which are cleaned, dehydrated and

sealed.

F. Refrigerant Components:

Refrigerant circuit components shall include multiple brass external

liquid line service valves with service gauge connection port,

multiple suction line service valves with service gage connection

port, accumulator, reversing valve, electronic expansion valves.

G. Safeties:

Operating safeties shall be factory selected, assembled, and tested.

The minimum functions shall include the following:

1. Compressor discharge over temperature protection.

2. System low voltage protection.

3. Compressor overload protection.

4. Compressor over current protection.

5. IPM module protection.

H. Electrical Requirements:

1. Units shall operate on single-phase, 60 Hz power at

208/230 v.

2. Unit electrical power shall be a single point connection.

3. All power and control wiring must be installed per NEC

and all local electrical codes.

4. Units shall have multiple terminal blocks to connect to

multiple indoor units.

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Carrier 40MBQB12C--3 Hoja de especificaciones Pagina 31

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