Carrier 50CD Bedienungsanleitung

Single-Package

Cooling

Units

SAFETY

CONSIDERATIONS

Installation

and

servicing

air

conditioning

equipment

can

hazardous

due

system

pressure

and

electrical

components.

Only

trained

and

quali¬

fied

service

personnel

should

install,

repair

service

air

conditioning

equipment.

Untrained

personnel

can

perform

basic

mainte¬

nance

functions

cleaning

coils

and

filters

and

replacing

filters.

All

other

operations

should

per¬

formed

trained

service

personnel.

When

working

air

conditioning

equipment,

observe

precautions

the

literature,

tags

and

labels

attached

the

unit

and

other

safety

precautions

that

may

apply.

all

safety

codes.

Wear

safety

glasses

and

work

gloves.

Use

quenching

cloth

for

unbrazing

operations.

Have

fire

extinguisher

available

for

all

brazing

operations.

INSTALLATION

Unit

Rigging

and

Placement

—

Inspect

for

trans¬

portation

damage.

File

any

claim

with

transporta¬

tion

agency.

Spreader

bars

are

not

required

top

crating

left

unit.

Keep

unit

upright.

not

drop

unit

(see

Fig.

1).

Rollers

may

used

move

unit

across

roof.

Level

using

frame

refer¬

ence.

Leveling

tolerance

16-in.

per

linear

foot

any

direction.

This

necessary

for

condensate

drain

function

properly.

Table

shows

unit

weight.

See

Fig.

for

rigging

details.

Fig.

—

Rigging

Details

Carrier

Corporation

1983

Form

50CD-23SI

Table

—

Physical

Data

UNIT

SIZE

50CD/CH008

OPERATING

WEIGHT

(lb)

Unit

730

With

Economizer*

790

Roof

Curb*

—

in.

120

COMPRESSOR

No.

...Type

—

BRE2

Copeland

Oil

(oz)

124

REFRIGERANT

(Capillary

Control)

R-22

Charge

(lb)

105

CONDENSER

COIL

Copper

Tubes,

Aluminum

Fins

Rows

Fins/in.

Total

Face

Area

(sq

ft)

CONDENSER

AIR

FAN

Nominal

Cfm

4100

No.

...Diameter

(in.)

Motor

(1075

Rpm)

1/2

EVAPORATOR

COIL

Copper

Tubes,

Aluminum

Fins

Rows

Fins/in.

Total

Face

Area

(sq

ft)

EVAPORATOR

AIR

FAN

Quantity...Size

(in

)

12x9

Nominal

Cfm

3000

Minimum

and

Maximum

Cfm

(Standard

Motor)

2250

3650

(Optional

Motor)

2250

3750

Rpm

Range

Maximum

Allowable

Rpm

Motor

Pulley

Pitch

Diameter

(in.)

Fan

Pulley

Pitch

Diameter

(in

)

Belt

No.

...Type

Speed

Change

per

Full

Turn

652

924

4-3

A51

Moveable

Pulley

Flange

(Rpm)

Moveable

Pulley

Maximum

Full

Turns

from

Closed

Position

Factory

Setting

—

Full

Turns

Open

Factory

Speed

Setting

(Rpm)

760

Motor

(Service

Factor)

Standard

Optional

HIGH-PRESSURE

SWITCH

Cutout

(psig)

426

Reset

(psig)

320

LOW-PRESSURE

SWITCH

(Liquid

Line)

Cutout

(psig)

Reset

(psig)

OUTDOOR

AIR

INLET

SCREENS*

Economizer,

Size

(in

)

19x31x1/2

—

None

50CH008

RETURN

AIR

FILTERS*

(Type)

Disposable

—

None

50CH008

No.

...Size

(in.)

*50CD008

only

Accessory

Roof

Curb

(50CD008)

—

See

Fig.

Assemble

and

install

accordance

with

instructions

shipped

with

curb.

Install

insulation,

cant

strips,

roofing

and

flashing

required.

Ductwork

must

attached

curb.

Unit

gasketing

roof

curb

critical

for

water

integrity.

Make

sure

that

gasketing

material

shipped

with

the

roof

curb

has

been

properly

installed

indicated

Fig.

Roof

Mount

—

Check

building

codes

for

weight

distribution

requirements.

Table

shows

unit

weight.

Slab

Mount

(50CH008)

—

Provide

level

con¬

crete

slab

the

same

width

unit

that

extends

ends

base

rails

only.

The

slab

should

in.

thick

with

in.

above

grade.

Install

gravel

apron

front

outdoor

air

inlet

prevent

grass

and

foliage

from

obstructing

airflow.

Allow

minimum

in.

under

outdoor

coil

for

condensate

drainage.

areas

where

prolonged

sub-freezing

temperatures

heavy

snow

occur,

increase

clearance

in.

mini¬

mum,

in.

maximum.

Positioning

—

Position

unit

prevent

snowdrifts

from

blocking

condenser

coil

and

outdoor

air

intake

(50CD008).

Provide

clearance

around

and

above

unit

for

airflow,

safety

and

service

access.

not

install

unit

indoor

location.

not

locate

unit

air

inlets

near

exhaust

vents

other

sources

contaminated

air.

Although

unit

weatherproof,

guard

against

water

from

higher

level

runoff

and

overhangs.

50CD008

Roof

Curb

Dimensions

and

Details

Fig.

—

50CH008

Base

Unit

Dimensions

Outdoor

Air

Intake

(50CD008)

—

The

50CD

can

equipped

with

optional

outdoor

air

damper

economizer

that

mixes

outdoor

air

with

return

air.

Field-Fabricated

Ductwork

50CD

—

See

Fig.

Secure

all

ducts

roof

curb

and

building

structure

before

unit

placed

curb.

not

connect

ductwork

unit.

Cabinet

return

air

static

shall

not

exceed

0.35

in.

with

economzier

0.40

in.

without

economizer.

50CH

—

See

Fig.

Secure

all

ductwork

flanges

unit

supply

air

and

return

air

openings

and

building

structure.

50CD/CH

—

Insulate

and

weatherproof

all

ex¬

ternal

ductwork,

joints

and

roof/

wall

openings

with

flashing

and

mastic

accordance

with

applicable

codes.

Insulate

ducts

passing

thru

unconditioned

space

and

cover

with

vapor

barrier.

minimum

clearance

not

required

for

any

air

duct

installation.

Optional

Manual

Outdoor

Air

Damper

(50CD

008)

—

Optional

outdoor

air

damper

shipped

with

hood

broken

down

unit

filter

section.

See

Fig.

ASSEMBLY

Remove

protective

polyethylene

cover

from

unit.

See

Fig.

Remove

upper

filter

access

panel

(save

screws).

See

Fig.

Remove

hood

parts

from

unit

evaporator

fan

and

filter

area.

Assemble

hood

top

and

side

plates

shown

Fig.

not

attach

hood

unit

this

time.

Adjust

outdoor

air

damper

blade

desired

setting

for

outside

air

intake

releasing

linkage

rod

setscrew

and

adjusting

linkage

rod.

See

Fig.

Secure

damper

blade

desired

position

with

setscrew.

Remove

screws

holding

manual

outdoor

air

damper

unit.

See

Fig.

Install

outdoor

air

hood

assembly,

using

screws

from

step

These

screws

secure

the

manual

outdoor

air

damper

assembly

and

the

outdoor

air

hood

unit.

See

Fig.

Slide

outdoor

air

inlet

screens

into

screen

tracks

hood

side

plates.

While

holding

screens

place,

fasten

screen

retainer

hood

using

screw

provided.

Make

sure

bottom

edge

screens

rest

inside

base

rail

shown

Fig.

Replace

upper

access

panel

with

screws

saved

from

step

check

percentage

ventilation

air

entering

unit,

proceed

follows:

unit

power

on,

turn

off.

Jumper

red

and

black

wires

24-v

barrier

main

control

box.

See

Fig.

10.

Turn

unit

power

energize

evaporator

(indoor)

fan.

Fig.

—

Outdoor

Air

Hood

Details

Check

percentage

ventilation

air

entering

unit.

percentage

varies

from

that

specified,

remove

upper

filter

access

panel

and

adjust

damper

blade

described

step

Proce¬

dure

may

have

repeated

until

proper

percentage

ventilation

air

attained.

Turn

off

power.

Remove

jumper

between

red

and

black

wires.

Replace

upper

filter

access

panel.

50CH008

Unit

Assembly

—

Remove

packaging

and

tape

from

evaporator

fan

drive

system.

Evaporator

Air

Fan

—

Evaporator

fan

uses

belt-

drive

motor

which

provides

high

static

nominal

airflow.

The

standard

motor

provides

approxi¬

mately

0.95

in.

static

nominal

cfm

and

the

alter¬

nate

motor

provides

1.0

in.

static

nominal

cfm.

Fig.

—

Damper

Blade

Adjustment

Fig.

—

Manual

Outdoor

Air

Damper

SCREW

AIR

SCREENS

BASE

RAIL

Fig.

—

Outdoor

Air

Hood

Assembled

Base

Unit

{50

Series

Shown)

Condenser

Air

Fan

and

Motor

are

factory

set.

Refer

Service,

Condenser

Air

Fan

Adjustment,

required.

Condensate

Drain

—

See

Fig.

and

for

drain

location.

7/8-in.

preformed

drain

hose

shipped

clamped

the

evaporator

basepan.

installation,

reroute

hose

that

passes

thru

the

hole

the

evaporator

basepan

and

the

unit

base

rail.

When

installed

properly,

the

hose

protrudes

thru

the

base

rail

about

in.

the

50CD008.

the

50CH008,

hose

protrudes

thru

the

side

the

base

rail

about

inch.

Replace

clamp

over

the

hose

where

passes

thru

the

basepan.

This

keeps

the

hose

level.

Use

trap

least

in.

deep

and

provide

protection

for

trap

against

freeze-up.

Field

Power

Supply

—

See

Fig.

and

Table

Unit

factory

wired

for

voltage

shown

name¬

plate.

208-volt

installations,

reconnect

all

trans¬

formers

208-

(200-)

volt

tap.

Refer

unit

label

diagrams.

Pigtails

are

provided

for

field

service

units

without

electric

heat

(use

factory-supplied

splices

UL-approved

copper/

aluminum

con¬

nector).

Units

with

electric

heat

are

provided

with

terminal

block

single

point

box.

All

field

wiring

must

comply

with

National

Elec¬

trical

Code

and

local

requirements.

Run

power

lines

thru

condenser

coil

end

panel

terminal

connections

shown

unit

wiring

diagram

and

Fig.

and

Fig.

Operating

voltage

compressor

must

within

voltage

range

indicated

unit

nameplate.

phase

units,

voltages

between

phases

must

balanced

within

and

the

current

must

bal¬

anced

within

10%.

Use

the

following

formula

determine

the

voltage

unbalance.

Voltage

Unbalance

max

voltage

deviation

from

average

voltage

average

voltage

WITHOUT

ELECTRIC

HEAT

UNIT

CONTROL

BOX

—

Contactor

Comp

—

Compressor

Gnd'

Equipment

Ground

—

Fuse

—

Terminal

Block

_Factory

Wiring

Field

Power

Wiring

Field

Splice

WITH

ELECTRIC

HEAT

SINGLE

POINT

BOX

Fig.

—

Field

Power

Wiring

Connections

Table

—

Electrical

Data

50CD/CH008

NOMINAL

V-PH-HZ

VOLTAGE

RANGE

COMPR

OFM

IFM

ELECTRIC

HEATERS

POWER

SUPPLY

50CD008

50CH008

50CD008

50CH008

p—

FLA

Min

Ckt

MOCP

Arr

Min

Ckt

MOCP

ips

Min

Max

RLA

LRA

FLA

208/230-3-60

187

254

183

L_.-_

55/55

60/60*

55/55

60/60*

93]

20-23

55/55

60/60

55/55

60/60

186

40-46

158

33-38

60/70

“60/70"]

55/60

60/60

59-68

68-76

85/95

80/90

95/105

90/100

460-3-60

414

508

;

35*

160

193

FLA

—

Full

Load

Amps

—

Horsepower

IFM

—

Indoor

Fan

Motor

LRA

—

Locked

Rotor

Amps

MOCP

—

Maximum

Overcurrent

Protection

OFM

—

Outdoor

Fan

Motor

RLA

—

Rated

Load

Amps

*Fuse

only

Example:

Supply

voltage

460-3-60.

abc

452

volts

464

volts

455

volts

Average

Voltage

452

464

455

1371

457

Determine

maximum

deviation

from

average

voltage:

(AB)

457

452

volts

(BC)

464

457

volts

(AC)

457

455

volts

Maximum

deviation

volts

Determine

voltage

unbalance:

Voltage

Unbalance

100

~=j

1.53%

This

amount

phase

unbalance

satisfactory

below

the

maximum

allowable

2%.

THERMOSTAT

ASSEMBLY

LOW-VOLTAGE

THERMOSTAT

CONNECTIONS

UNIT

CONTROL

BOX

Fig.

—

Field

Control

Thermostat

Wiring

Unit

failure

result

operation

improper

line

voltage

excessive

phase

imbalance

constitutes

abuse

and

may

cause

damage

electrical

compo¬

nents.

Such

operation

would

invalidate

any

appli¬

cable

Carrier

warranty.

UNITS

WITH

ELECTRIC

HEAT

—

When

elec¬

tric

heat

installed,

connect

the

field

power

wires

terminal

block

located

the

single

point

box.

The

single

point

box

attached

the

corner

post,

directly

below

the

control

box.

DISCONNECTS

—

fused

disconnect

required

only

units

without

electric

heat.

When

electric

heat

installed,

use

NEC

disconnect

adequate

size.

Provide

fusing

for

disconnect

required

local

codes.

The

unit

informative

nameplate

and

Table

list

electric

heat

fuse

and

wire

amperage.

Field

Control

Wiring

—

Install

Carrier-approved

accessory

thermostat

assembly

according

instal¬

lation

instructions

included

with

accessory.

Locate

thermostat

assembly

solid

wall

the

condi¬

tioned

space

sense

average

temperature.

THERMOSTAT

WIRES

—

Use

gage

for

50-ft

long

wires,

gage

for

50-

75-ft

wire

lengths.

Route

the

control

wires

thru

hole

provided

the

corner

post

(see

Fig.

and

then

feed

wires

thru

raceway

built

into

the

corner

post.

Route

wires

from

the

raceway

into

the

24-v

barrier

located

the

left

side

the

control

box.

Make

connections

shown

Fig.

12.

Set

heat

anticipator

settings

indicated

below.

Heat

Anticipator

Settings

1st

Stage

2nd

Stage

with

Heaters

and

2-Stage

Heat

Thermostat*

*Applies

only

50CD

Settings

may

changed

slightly

provide

greater

degree

comfort

for

particular

installation.

Refer

accessory

remote

control

panel

instruc¬

tions

required.

Return

Air

Filters

(50CD008)

—

Make

sure

correct

filters

are

installed

filter

tracks.

See

Table

not

operate

unit

without

return

air

filters.

Outdoor

Air

Inlet

Screens

(50CD008)

—

Out¬

door

air

inlet

screen(s)

must

place

before

operating

unit.

Economizer

Section

(50CD008)

—

Optional

economizer

shipped

with

hood

broken

down

unit

filter

section.

See

Fig.

13.

Fig.

—

Access

Panel

Location

ASSEMBLY

Remove

protective

polyethylene

cover

from

unit.

See

Fig.

13.

Remove

upper

filter

access

panel

(save

screws).

See

Fig.

13.

Remove

hood

parts

from

unit

evaporator

fan

and

filter

area.

Assemble

hood

top

and

side

plates

shown

Fig.

14.

not

attach

hood

unit

this

time.

Put

aside

baffle,

screen

retainer

and

retainer

screw

for

later

assembly.

Determine

vent

air

required

building

conditioned.

so,

check

for

percentage

vent

air

needed

and

record

quantity

for

vent

adjustment

step

11.

move

jumper

plug

from

base

unit

receptacle

and

discard.

Insert

economizer

plug

into

recep¬

tacle.

See

Fig.

15.

Steps

thru

involve

releasing

and

adjusting

indoor

damper

blades

from

factory

set

position.

Fig.

—

Outdoor

Air

Hood

Details

ECONOMIZER

PLUG

CLS

—

Cooling

Lockout

Switch

—

Enthalpy

Control

OAT.

—

Outdoor

Air

Thermostat

OUTDOOR

AIR

INLET

SCREENS

(2)

Fig.

—

Economizer

Installed

Unit

lease

indoor

blades’

drive

linkage

loosen¬

ing

linkage

connector

setscrew

indoor

crank-

arm

drive

shaft.

See

Fig.

16.

Remove

pink

wire

from

economizer

damper

motor

terminal

and

temporarily

tape

bare

wire

end.

Remove

violet

wire

from

economizer

damper

motor

and

connect

terminal

economizer

damper

motor.

See

Fig.

17.

OUTDOOR

BLADES(2)

DRIVE

SHAFT

OUTDOOR

DRIVE

LINKAGE

Fig.

INDOOR

BLADES

(3)

Economizer

Details

ECONOMIZER

DAMPER

MOTOR

PINK

WIRE

VIOLET

WIRE

TERMINAL

Fig.

—

Economizer

Motor

Connections

Jumper

red

(base

unit

24-v

power)

and

black

(evaporator

fan

motor)

wires

24-volt

control

box

compartment.

See

Fig.

10.

Turn

base

unit

power

energize

evap¬

orator

fan.

The

economizer’s

outdoor

blades

should

open

completely.

Adjust

the

indoor

blades’

drive

linkage

that

indoor

blades

are

fully

closed.

Tighten

the

linkage

connector

setscrew.

Turn

off

base

unit

power.

Reconnect

pink

and

violet

wires

economizer

motor,

shown

Fig.

17.

vent

air

required,

leave

red

and

black

wires

jumpered.

vent

air

not

needed,

remove

jumper

between

red

and

black

wires.

10.

Fasten

baffle

left

side

damper

plate

with

round

head

screws

provided.

See

Fig.

18.

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