Carrier 38YXA030 SERIES330 User Manual HEAT PUMP Manuals And Guides L0411019

CARRIER Air conditioner/heat pump(outside unit) Manual L0411019 CARRIER Air conditioner/heat pump(outside unit) Owner's Manual, CARRIER Air conditioner/heat pump(outside unit) installation guides

User Manual: Carrier 38YXA030 SERIES330 38YXA030 SERIES330 CARRIER HEAT PUMP - Manuals and Guides View the owners manual for your CARRIER HEAT PUMP #38YXA030SERIES330. Home:Heating & Cooling Parts:Carrier Parts:Carrier HEAT PUMP Manual

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38YXA
Deluxe 13 SEER Split-System
Heat Pump with Puron® Refrigerant

HEATING & COOUNG

Visit www.carrier.cmn

Installation and Start-Up Instructions
NOTE:
Read
installation.
This symbol

the
_

entire

instruction

indicates

a change

SAFETY
Improper
or

installation,

use

can

conditions

which

starting

the

since the last issue.

alteration,

explosion,
may

before

CONSIDERATIONS

adjustment,

cause

manual

fire,

cause

service,

electrical

death,

maintenance,

shock,

personal

injury,

other

or property

damage.
Consult a qualified
installer,
service agency, or your
distributor
or branch for information
or assistance.
The qualified
installer
when

or agency

modifying

packaged
Follow

must use _actory-authorized
this product.

with

all safety

codes.

gloves.

Have

extinguisher

fire

and follow

and attached
Electrical

Wear

Use

available.

all warnings

(NEC)

Recognize safety information.
When you see this symbol
manuals,

the signal

protective

for brazing

Read

these

clothing,
operations.

instructions

thor-

included

in literature

codes

and National

requirements.

A98516

words

for personal

DANGER,

injury.

3. Run

WARNING,

and CAU-

TION. These words are used with the safety-alert
symbol. DANGER identifies the most serious hazards which will result in severe
personal
could

injury
result

identify
injury

or death.

in personal

unsafe

suggestions

WARNING
injury

practices

or product

will result

signifies

or death.

which

and property

which

Fig. 1--Model

This is the safety-alert
symbol Z_ •
on the unit and in instructions
or

be alert to the potential

Understand

glasses,
cloth

local building

for special

instructions

installing.

or cautions

to the unit. Consult

Code

when

safety

quenching

kits or accessories

to the individual

the kits or accessories

and work
oughly

Refer

would

result

damage.

hazards

CAUTION

in enhanced

6. Avoid

reliability,

installing,

or servicing

be in the OFF

than

with

a suitable

cause personal

1 disconnect

injury

system,

switch.

warning

label.

main

position.

Lock

Electrical

elec-

wall studs,

8. Ensure

There

out and tag
shock

that

rounds

systems.

operate

Be certain

at higher

that service

Some R-22 service equipment
with your distributor.
INSTALLATION
NOTE:

In some

gas pulsations
i. Locate

from

capacity

pressures

sound
that vapor

than standard

equipment

is rated

When

R-22

indoor

Check

in the living area has been traced
installation

may disturb

of equipment.

patios,

decks, etc. where unit

customer.

and liquid tube diameters

hanger

Catalog

unit

absorb

the wall, seal opening
caulk.

(See Fig. 2.)

pipes, duct work, floor

from joists
in direct

and studs with a

contact

are appropriate

533-80082

Printed in U.S.A.

with tubing.

accessory
charge

box cover

and/or

system

which

charge

Always
liquid-line

or designs

38YXA-4SI

proper

Charge

liquid-line

install

sleeves

with

unit

section

the

operation,
located

check

on control

of this instruction.

factory-supplied
If replacing

for appropriate

Pg 1

unit,

OD for all

long line.

from your

without notice

indoor

for operation

size is 3/8-in.

filter drier.

Data Digest

filter driers

and

by 15 ft of field-supplied

information

including

pump

refer to Product

For

charging

IMPORTANT:

metal

to _actory-approved

in the Check

applications

are 1 in. wide

(See Fig. 2.)
by using

refrigerant

tubing.

using

Maxinmm

(bi-flow)

sur-

of insulation.

unit is connected

IMPORTANT:

and completely

insulation.

fi:om insulation

to shape

refrigerant

Form

straps

of tubing

straps

or factory

or change at any time, specifications

is pliable

unit of same size when connected

replacement

reserves the right to discontinue,
PC 101

tubing
comes

use hanger

unit contains

residential

of unit.

Manufacturer

and

with water

insulation

to shape

outdoor

for Puron.

may not be acceptable.

unit away from windows,

operation
2. Ensure

improper

avoiding

tube.

bent to conform

RECOMMENDATIONS

cases noise

and walls.

refrigerant

necessary,

conform
10. Isolate

systems

structure

silicon-based

contact
floors,

tubing

vapor

9. When

can

or death.

?':I["I211i_']'_
Puron

possible

(See Fig. 2.)

modifying,
must

tubes through

rigid wire or strap which

switch

be more

switch

refrigerant

or other pliable

7. Do not suspend

trical disconnect

between

direct tubing

joists,

¥!I W/_'I ;t_'!I_[_

may

slack

5. When passing

personal

or operation.

Before

some

as directly

and bends.

vibration.

with RTV

is used to highlight

installation,

4. Leave

tubes

tunas

which

is used

in minor

NOTE

refrigerant

unnecessary

38YXA

distributor

Puron

heat

the filter

drier,

part number.

Obtain

or branch.

and without incurring obligations.
2-03

Replaces:

38YXA-3Sl

3/8-1N

NOTE: Avoid contact between tubing and structure

DIA TIEDOWN

KNOCKOUTS

IN BASEPAN
(2) PLACES

OUTDOORWALL-X INDOORWALb7

r.o ,oT E

!
A

ON___

VAPOR TUBE

SULATI
THROUGH THE WALL

HANGER STRAP-(AROUND VAPOR

_,,/_

X
_

-i]

JOIST

VIEW

FROM

3/16"

TOP

INSULATION

A97548

Dimensions (In.)
TUBE_,

MINIMUM MOUNTING
PAD DIMENSIONS

UNIT

VAPOR TUBE

SIZE

Support
Feet

Snow
Stand

024-060

26 X 32

31 X 35

9-3/4

1"MIN.
----II_

TIEDOWN KNOCKOUT
LOCATIONS

L LIQUID
TUBE

Fig. 3--Mounting

Unit to Pad

SUSPENSION

¥.'_1
[,"_&lji_0]2]
A94028

Fig. 2--Connecting

Do not allow POE lubricant

Tubing Installation

materiah

INSTALLATION
IMPORTANT:

Specifications

construction

market

erant tubing

sets, metering

literature.

There

Guideline

and Service

Conditioners
required
retrofit.
Step

can

this

device,

changes

for

in residential

unit,

indoor

Roof

mounted

units

wind

baffles.

Consult

for Residential
using

Puron

specific

Equipment

the Application
Split-System

Refiigerant

applications

and

Air

Manual
Pumps

Remove

INSPECT

EQUIPMENT
with shipping

is damaged

carton

taking

company

for R-22

compressor

or incomplete.

Locate

unit rating

information

Check

rating

to be sure unit matches
on a Solid,

If conditions

or local codes

down

should

bolts

provided

needed
Level

reqnire

used

and

plate

On rooftop

applications,
a load-bearing
Arrange

and minimize
goveruing

mount

rooftop

on unit corner
install

Mounting

to winds

the

with roofing

types

Refrigerant

must

above

Application

Split-System

be level

manufacturer

synthetic

5 mph may require

Guideline

and

Air Conditioners

for wind

baffle

to within

Service
and Heat

construction.

_+ 2 ° (_+ 3/8

in.ift)

per

specifications.

3--Clearance

service

Requirements
allow sufficient
space for airflow clearance,
piping, and service. Allow 30-in. clearance
to

end of unit and 48 in. above unit. For proper

fastened

through
patteru

airflow,

a 6-in.

of vibration
applications.

to building.

snow,

or ice from

roof

or eaves

locate

at least

cannot

fall

on unit.

On rooftop
surface.

applications,

4_Operating

unit

6 in.

above

roof

Ambient

to pact, tie

The minimum

and the maximum
outdoor operating
ambient in cooling mode is
125°F. The maximum
outdoor operating
ambient in heating mode
is 66°F.

in Fig. 3

or frame.

to adequately

so water,

directly

knockouts

hole location.

on level platform

Position

Step

Pad

the unit be attached

members

unit.

job specifications.

wall and isolate unit and tubing

supporting

transmission

if shipment

to properly

base pan size and knockout

unit above
structure.

care not to damage

in unit base pan. Refer to unit mounting

to determine

Puron

Unit

When installing,
wiring, refrigerant

prior to installation

It contains

Step 2--Install

certain

clearance
on 1 side of unit and 12 in. on all remaining
sides must
be maintained.
Maintain
a distance
of 24 in. between
units.

panel.

plate

using

NOTE:

and Job Site

exposed

for Residential

to obtain

UNIT

to final location.

to come into contact

deteriorate

new

and filter drier listed in presale
Consult

unit,

Step
1--Check

File claim

codes

unit

refrig-

be no deviation.
Manual

may

roofing.

the outdoor

and Heat Pumps

unit

UNPACK
Move
unit.

for

require

POE

Place

outdoor

Step 5--Elevate

operating

Consult

mode

is 55°F,

¥.'_1
[R'_IYi[°]TI

unit
local

in cooling

Unit

set fi'om

support

ambient

Accumulation
equipment
Elevate

unit

per local

clearance

above

drainage

of unit.

installed.

Use

freezing
structions

water

and

ice

in base

pan

may

cause

damage.
climate

estimated

Fig. 4 shows

accessory

temperatures
packaged

and code requirements

snowfall
snow

unit
stand

are encountered.
with accessories.

level
with

and

accessory

in areas
Refer

to provide

ensure
where

adequate

support

feet

prolonged

to Installation

In-

FAN

COILS

If indoor

unit

hard shutoff

(tan

coil)

comes

TXV specifically

factory

equipped

designed

with

tbr Puron,

a bi-flow

no TXV change

is required.
If TXV installation
is required,
refer to TXV
Instructions
for details on TXV installation.
Step 7--Check
Check

Defrost

defi'ost

securely

and feeder

Thermostat

thennostat

attached.

to ensure

There

tube going

kit Installation

it is properly

is a liquid header
into

outdoor

located

and

with a brass distributor

coil. At the end of 1 of the

feeder tubes, there is a 3/8-in. OD stub tube approximately
3 in.
long. (See Fig. 7.) The defrost themmstat
should be located on stub
liquid header,

Step

Liquid-Line

8--In

Solenoid

A98533

Fig. 4_Accessory

tube. Note that there is only 1 stub tube used with
and on most units it is the bottom circuit.

Support Feet

For

refiigerant

greater

Step 6--Check

Indoor Expansion

Device

Long-Line
Valve

piping

and outdoor

proper

operate
with

unit

with

operation

hard

with Puron.

evaporator

and

shutoff

reliability,

TXV

units

must

designed

specifically

Do not use an R-22

coils having

capillary

If required

unit is greater

TXV. Do not install
tube metering

devices

flow

an'ow

pointing

toward

included

with accessory

IMPORTANT:

Flow arrow

Step 9--Make

is required,

remove

existing

coi!. Refer to Fig. 5 and 6 and install
for Puron)

as follows:

suction

tube adapter.

Install

2. Install

liquid

3. Connect

and

install

and

LSV kit

designed for Puron Heat
2 ft of outdoor unit with

unit. Follow

the Installation

kit.

must point

toward

outdoor

unit.

Piping Connections

flare-to-sweat

external

Accu-RaterJ_

from

TXV kit (specifically

adapter.

equalizer

tube

to fitting

suction

tube

of suction

tube

¥:I [R_lii_0T/1

adapter.
4. Position
adapter.
5. Insulate
6. Leak

Guideline

Air Conditioners

Guideline,

outdoor

indoor

all requirements

in the Application

Application

lengths

between

COILS

If TXV installation
designed

section

by Long-Line

Instructions

For TXV kit part number and charging instructions, refer to TXV
label in outdoor unit.

indoor

Guideline

equivalent

than _+20 fi, follow

Part No. KHALS0401LLS
specifically
Pump. LSV should be installed within

or pistons.

FURNACE

with

difference

Service Manual for Residential
Split-System
Heat Pumps Using Puron Refrigerant.

r:ll[R_ri_,]3
installed

Install

an'angements

than 50 fl and.or when elevation

the Long-Line

For

Applications,

(LSV)

sensing
Secure

bulb
using

on horizontal
supplied

bulb after installation.

check

portion

Do not

hardware.
(See Fig. 6.)

leave

system

minimum

required

extremely

susceptible

ends

of tubing

open

to atmosphere

lbr installation.

sealed

to moisture
during

any longer

POE oil in compressor
absolution.

Always

than
is
keep

installation.

all connections.

SENSING
BULB

EQUALIZER

THERMOSTATIC
EXPANSION
VALVE

7/8 IN. OD & SMALLER

LARGER

THAN

A91277

Fig. 5--Typical

7/8 IN. OD
A81032

TXV Installation

Fig. 6--Positioning
3

of Sensing Bulb

FEEDER TUBE

Outdoor

units may be connected

to indoor

section

tubing package or field-supplied
rel}igerant
size and condition. For tubing requirements

TUBE

tial

capacity

and

performance

recommendations
Manual

the

for Residential

Pumps

Using Puron

1 for field

tubing

losses

can

Application

using accessory

grade tubing of con'ect
beyond 50 ft, substanoccur.

Guideline

Split-System

and

Air Conditioners

Refi'igerant

to minimize

diameters.

Refer

losses.

to Table

the

Service
and Heat

Refer to Table

2 for

accessory

requirements.
Refrigerant
microns

robes

OUTDOOR
DEFROST
THERMOSTAT

INDOOR
These

A97517

Fig. 7--Defrost

Thermostat

UNIT

outdoor

indoor

rise at service
longer

tubing

valve.

is buried,

provide

approved

Do NOT bury ref_cigerant

tubing

lengths

to unit

or service

3. Locate

valves

observe

the

liqnid

following:
• Use

outdoor

• Wrap
material.

service

shield.
valves

with

wet

Table 1--Refrigerant
UNIT
SIZE

cloth

or use a heat

sink

evacuated

TO FACTORY-APPROVED

evaluated

and listed with specific

perfomlance.
indoor

coils which

holding

outdoor

are not factory

size with matching

piston

number

bag taped to unit containing

teflon
service

washer
valve.

adapter

from bag and install

on open

end of

robe from

bag and connect

threaded

nut to

Tighten nut finger tight and then with
i/2 tum (15 ft-lb). DO NOT OVER-

TUBE DIAMETER
(ALTERNATE)

TUBE DIAMETER

Vapor
5/8

Liquid
3/8

Vapor
5/8

Vapor
3/4

030

3/8

3/4

3/8

3/4

5/8, 7/8

036

3/8

3/4

3/8

3/4

5/8, 7/8

042, 048
060

3/8
3/8

7/8
7/8

3/8
3/8

7/8
1- 1/8

3/4
7/8

NOTES:
1 Tube diameters are for lengths up to 50 ft For tubing lengths greater than 50 ft horizontal and/or 20 ft vertical differential, consult the Application
Manual for Residential Split-System Air Conditioners and Heat Pumps Using Puron Refrigerant
2 Refrigerant tubes and indoor coils must be evacuated to 500 microns to minimize contamination and moisture in the system.
3 If required by local codes, Pressure Guard TM kit is available See Product Data Digest for part numbers.

Crankcase

Compressor
Puron

Heater

Start Assist--Capacitor
Low-Ambient
Pressure

and Relay
Switch

Wind Baffle
Support

Puron Hard Shutoff
Puron Liquid-Line

Solenoid

TXV

Valve for Heating

* For tubing line sets between 50 and 175 ft, refer to the Application
Puron Refrigerant
t Required for all applications.

REQUIRED FOR LONG-LINE
APPLICATIONS*
(OVER 50 FT)
Yes

Yes

Yes
Yes

Yes
No

See Low-Ambient

Feet

Guideline and Service

Usage

REQUIRED FOR LOW-AMBIENT
APPLICATIONS
(BELOW 55°F)
Yes

Freeze Thermostat

robe.

(See Fig. 8.)

Liquid
3/8

Evaporator

liquid

listed on unit

024

ACCESSORY

Liquid and Vapor Tube Diameters (in.)

DIAMETER

Table 2--Accessory

to 500

in the system.

TUBE
retainer

liqnid service valve.
wrench an additional
TIGHTEN!

Connections and Recommended

CONNECTION

apply

piston

plastic

5. Remove

a brazing

plate.

4. Remove
damage

nmst

and moisture

units.

ADAPTER

rating

[,.]_LW_i[.]]]

system

Do not

to these

2. Check

than 36 in.

To prevent

units are carefully

i. Remove
plastic
service valve.

a 6 in. vertical

coil

CONNECTED

coils for proper

INSTALL
If ANY refi'igerant

indoor

contamination

UNIT

IMPORTANT:

Location

and

to minimize

Instructions

Recommended

Yest

Yesl-

See Long-Line
Application Guideline

Guideline and Service Manual for Residential

SpIit-System

Air Conditioners

and Heat Pumps using

REFRIGERANT

TUBING

AND

FILTER

DRIER

LEAK
Leak

r:l ["IAlii_']'_

Connect
Use

vapor

tubing

Connect
refi'igerant

adapter

to fittings

liqnid tubing
grade

tubing.

tube on liquid

on outdoor

unit

vapor

to filter &ier (See Table
Connect

service

test all joints

EVACUATE

Installation of filter drier in liquid line is required.

valve.

CHECKING
in indoor,

outdoor,

REFRIGERANT

and refi'igerant

TUBING

tubing.

AND INDOOR

COIL

service

1 and Fig. 9.)

other end of filter

drier to

valve.

pump.

SOT as a vacuulIl

SWEAT/FLARE
ADAPTER

Refrigerant

tubes

recommended

and

indoor

deep vacuum

triple evacuation
method
below is fbllowed.
SEAL

coil must

method

may

be evacuated

of 500 microns.

be used

if the procedure

IMPORTANT:
Never open system under vacuum
without first breaking it open with nitrogen.
Deep

Vacuum

using

the

The alternate
outlined

to atmosphere

Method

The deep vacuum method requires
a vacuum
pump capable
pulling a vacuum of 500 microns and a vacuum gage capable
PISTON

accurately

PISTON

method

BOD_

measuring

and liquid
Triple

LIQUID SERVICE

water.

pump

method

capable

and system

Service Valve with Sweat Adapter
Tube

Pump

system

continue
2. Close

SWEAT CONNECTION

service

4. Close
wrapped
Wrap

in a heat-sinking

service

sinking
non-silver
(materials

while brazing,

valves

material.
bearing
which

material

and filter

Braze

brazing
melt below

such

drier

connections

service

must be

a wet cloth
either

material.

800°F).

Consult

not

silver
use

local

or heatbearing

soft

5. Repeat

to 28 in. of mercury

solder

code require-

FINAL

and outdoor
not

rubbing

attention
secure
UID-LINE
FILTER-DRIER

and allow

pump

and regulator

pump.
to system

and open

is 2 psig.
to stand for 1 hr. During

will be able to difff_se throughout

the

moisture.

this procedure
minimal

IMPORTANT:

lllents.

Refer

15 minutes.

valve and allow system

TUBING

vacuum

water.

and shut off vacuum
cylinder

pressure

absorbing

contain

vacuum

is free of air

to 28 in. of mercury

any liquid

for an additional

valves

service

system

deep

only be used when
down

not contain

this time, &y nitrogen

as a wet cloth.

with

using

valves

down

a nitrogen

until system

To avoid valve damage

The
a system

is as follows:

operating

3. Connect

should

of pumping

does

Fig. 11 and proceed

Fig. 8--Liquid

depth.

Method

evacuation

is only

vacuum
A01214

vacuum

way of assuring

(See Fig. i0.)

Evacuation

The triple

VALVE

this

is the most positive

of
of

as indicated

amounts

in Fig. 11. System

of contaminants

will then

and water vapor.

CHECK
Check

to be certain

unit has not shifted
against

to feeder

each

factory

during

other

tubes, making

tubing

shipment.

or any

on both indoor
Ensure

sheet

metal.

tubes
Pay

are

sure wire ties on feeder tubes

are

and tight.

50OO
4500

SERVICE
VALVE

4000
LEAKIN
SYSTEM

3500
3000
2500
_2000

VACUUM
TIGHT
TOO WET

1500
1000

TIGHT
DRY SYSTEM

5OO

0
A01215

Fig. g--Filter

Drier with Sweat Adapter
Liquid Tube

MINUTES
A95424

Tube and
Fig. 10--Deep

Vacuum Graph

DISCONNECT
PER N. E. C. AND/OR
LOCAL CODES

IEVACUATE ]

CONTACTOR

IBREAKVACUUMWITH DRYNITROGENI

FIELD POWER

C>° C>

WIRING

C>oO

IEVAOUATEI

FIELD GROUND

IBREAKVACUUMWITH DRYNITROGENI

WIRING

GROUND
LUG

A91056

Fig. 12--Line

IEVAOUATEI
CHECK FOR TIGHT, DRY SYSTEM
(IF IT HOLDS DEEP VACUUM)

CONNECT

CONTROL

Route

control

24v

connect

leads

Installation

I CHARGE
SYSTEMI
A95425

Fig. 11--Triple

wires

Step lO--Make

wiring

incoming

Electrical Connections

must
power

Use furnace
former

complies

and electrical

and voltage

unit

codes,

rating

plate.

improper

voltage.

protection

device.

with local and national

Contact

to system
local

See unit rating

is within

power

plate

fire, safety,
limits

company

shown

accessory
FINAL

for recommended

circuit

NOTE:
Operation
of unit on improper
line voltage constitutes
abuse and could affect unit reliability.
See unit rating plate. Do not
may fluctuate

above

or below

limits.

NOTE:
unit.

Use

NOTE:

Install

NEC

where voltage

power

wire

branch

only

circuit

to handle unit starting

fi'om and readily

between

accessible

disconnect

current.

switch

of adequate

Locate disconnect

fi'om unit, per Section

GROUND

Remove

access

fi'om disconnect
control box.

AND

POWER

through

power

wiring

occur.
conduit

Connect
safety.

Connect

be separated

from

or accessory

trans-

accessories

may exceed

Determine

total transformer

the miniload-

or split the load with an

11--Compressor

When

equipped

greater
outdoor

wires

and into unit

factory

to OFF

units.

Refer
Puron

Step 12--Install

furnish

power

Split-System

etc.

to heater

power

electrical

in long-line

greater

applications

Guideline

(tubing
indoor

and

Air Conditioners

to heater

disconnect

than 8 ft) between

to the Application

for Residential

sheet metal,

unit. To furnish

and close

is required

connections

wire routing

Heater

heater,

starting

than 50 ft or elevation

Check

with tubing,

with a crankcase

heater

and field wire

properly.

Crankcase

of 24 hr before

Using

wiring

and

Service
and Heat

Refrigerant.

Electrical

Accessories

Refer to the individual instructions packaged with kits or accessories when installing.

The

ground

when

GROUND
ground

wire

minimum.

capacity

are not in contact

A crankcase

of NEC.

Extend

hole provided

Step 13--Start-Up

may consist

installed

wire
power

AND

POWER

to ground
wiring

or unbroken
electrical
fault

of electrical

in accordance

electrical codes. Failure to follow this warning
electric shock, fire, or death.

CONNECT

24-v

are secured

Step

Pumps

The unit cabinet must have an uninterrupted
ground to minimize
personal
i111ury if an
should

wires

per
sight

F:I _ll:_

metal

color-coded

as required.

Check

only, set thermostat
outdoor unit.

size

within

440-14

to unit wiring.

wire. If

as measured

CHECK

and

WIRES

panel to gain access

24-vi40-va

the transfomler

WIRING

IMPORTANT:

Manual
ROUTE

unit,

1 and must

requirement.

transformer

minimum

copper

100 ft from

fan coil transformer,

power,

to ensure terminations

install unit in system

combinations.
minimum)

to correct

ensure

permissible

(:lass

Use of available

ing and increase
Be sure field wiring

be NEC

and

leads.

transformer,

mum 40-va

unit

(35°(:

use No. 16 AWG

&op.

grommet

13.) See Thermostat

specific

than

wires,

wiring

Fig.

insulated

voltage

for control

NOTE:

voltage

excessive

control
(See

for wiring

color-coded,

is located

along the control

All

through
wiring.

Instructions

to avoid

Evacuation Method

WIRING

to control

Use No. 18 AWG
thermostat

Power Connections

wire

with

or
To prevent

existing

• Do not overcharge

WIRES

connection

to contactor

compressor

in control
as shown

box

in Fig.

damage

or personal

i111ury, observe

the following:

can result in an

for
12.

system

with refrigerant.

• Do not operate

unit in a vacuum

• Do not disable

low-pressure

In scroll compressor

applications:

• Dome

may be hot.

temperatures

or at negative

switch.

pressure.

TYPICAL
FAN COIL

HP THERMOSTAT

HEAT
PUMP

24 VAC

HOT

24 VAC

COM

HEAT

STAGE

2 E_"

COOL/HEAT
STAGE 1
INDOOR FAN

RVS COOLING

EMERGENCY
HEAT

* IF AVAILABLE

A02325

--_

Fig. 13--Generic Wiring Diagram
(See Thermostat Installation Instructions
for wiring specific unit combinations.)
LEGEND
24-V

FACTORY

WIRING

24-V FIELD WIRING
_0

FIELD SPLICE CONNECTION
OUTDOOR THERMOSTAT
EMERGENCY HEAT RELAY
SUPPLEMENTAL HEAT RELAY

SEQUENCE
NOTE:

OF OPERATION

Defi'ost

out timer

which

With power
energized.

control

board

is equipped

may be initiated

supplied

upon

to indoor

with a 5-minute

an interruption

and outdoor

units,

lock-

of power.

transformer

Cooling
Back seating
valves.

selwice

valves

are not equipped

Fully back seat (counter

removing

clockwise)

On a call for cooling,

with Schrader

R-G. Circuit

valve stem before

position.

gage port cap.

r+'1[_']71
Federal

regulations

atmosphere.

require

Recover

that you do not vent refrigerant

during

system

repair

final

to
unit

i. Fully
2. Unit

to properly

back seat (open)
is shipped

caps installed.
refrigerant
with

wrench
metal.

starting

When

thermostat

with valve
Replace

wrench
valve

and vapor
stem(s)

If indoor

stem

caps after

seated).

Replace

an additional

body

seated
system

valves.
(closed)

and

is opened

caps finger-tight

1/12 turn. Use

flats to prevent

electrical

is below

disconnects

thermostat
indoor

or AUTO

mode,

system

at desired

ambient

5. Set room thermostat

to energize

distortion

to
and

a backup
of sheet

as desired.

refrigerant

or COOL
Operate

charge.

Be sure set point

and fan control
unit

motor

R-Y,

and

it to cooling

starting

outdoor

indoor

fan

unit blower

on high speed.

contacts

R-Y open, de-energizing

Compressor

unit is equipped

runs an additional

and motors

should

with a time-delay

90 sec to increase

relay

system

the
stop.

circuit,

efficiency.

thermostat

snakes

circuits

R-Y

Circuit

contactor,

starting

outdoor

tim motor

R-Y energizes

compressor.

Circuit

blower

motor

Should

temperature

through

for

to ON

15 minutes.

When

R-G energizes

on high

electric
outdoor

relay,

and

starting

to fall, R-W2 is made

Circuit

heat.

If outdoor

temperature

satisfied,

contactor and sequencer.
all fan off delays.

continue

thermostat.

thermostat

blower

room

on an additional

thermostat

indoor

and R-G.

speed.

in the dwelling

second-stage

close to bring

temperature.

to HEAT

relay.

contactor,
R-G energizes

blower

is satisfied,

R-O,

switching

On a call for heating,

setting

system.

temperature.

energizes

circuits

valve,

Heating

service

front

indoor

snakes

reversing

circuit.

and blower

supplemental

4. Set room

Check

start up the system:

liquid

flow (back

tighten

3. Close

relay,

the blower

these steps

R-Y

and compressor

NOTE:

disposal.
Follow

Circuit

motor

contactor

thermostat

R-O energizes

(field-installed

R-W2
option),

bank of supplemental
its contacts

All heaters

energizes
falls below

open,

and motors

contacts

electric

heat.

de-energizing

should

stop after

o
1'o

--o--

70 cc--_

-----

__
(_

_
--c)--

o_ o_

_,,__<:z>i

-CC)--

CES0130076-00

Quiet "
Shift

Speedup
Pins

--CC)-

Defrost interval
DIP switches
A99442

Fig. 14_Defrost
Quiet

Shift

Quiet

Shift is a field-selectable

position),

which

will

defrost

eliminate

mode

occasional

(factory
noise

set to OFF

that

could

heard at the start of defrost cycle and restarting
of heating cycle. It
is selected by placing DIP switch 3 (on defrost board) in ON
position.
When Quiet Shift switch is placed in ON position, and a defrost is
initiated, the following
sequence of operation will occur. Reversing valve
turn

will energize,

back

compressor

on to complete

conclusion

of defrost

40 seconds,

before

del,rost.

reversing

will turn off for another

will
At

the start

of heating

valve will de-energize,

30 seconds,

starting

turn off for 30 seconds,

compressor
operation). On return to heating operation, compressor
will again turn off for an additional
30 seconds and the fan for 40
seconds.

mode.

When the Quiet

second

cycle

i. Turn off power
2. Disconnect

4. After

The defrost
between

is a time/temperature

del`rost cycles

(DIP

control

switch

which

includes

1 and 2 on the board)

of 30, 60, 90, or 120 minutes

(_actory

set at

90 minutes).
To initiate a forced delrost, two options
the status of the def,rost thermostat.
If defrost

thermostat

is closed,

by placing

a flat head screw

releasing,

to observe

Shift switch
second

intervals

previously.
position,

during

When
a normal

Quiet

defrost

Shift

and complete

for 5 seconds

cycle.

When

will be turned

this complete

Unit

reopens

at approximately

defrost

switch

5. Turn

off power

cycle

and

the Quiet

in ON position,
compressor

the

off period

length

of defrost

followed

mode,

point

liquid

line temperature

of defrost

del`rost

80°F

cycle

thermostat

(ap-

until

del`rost

coil temperature

thermostat

at liquid

line or

time.

to outdoor
board

Step 14--Check
UNIT

cycle,

and reconnect

after above

_an motor

forced

defrost

lead

charge

cycle.

Factory

charge

default

cooling

mode,

OFF

will be observed.

(actual

length

When

Quiet Shift switch is

1 minute

30 seconds

Charge

CHARGE

as explained

in heating

erant

will be observed

frost to accnmulate

off for two 30

is in factory

defi'ost

Quiet Shift position).

closing

remain

of defrost

a short defrost

cycle

will

remainder

With

the selected

allowing

30°F).

NOTI=:

If defrost thermostat
is in open position,
and speedup pins are
shorted (with a flat head screw &iver) for 5 seconds and released,
upon

mode,

board

pins (J1) must be shorted

in between

compressor

depending

weather,

grounding.

in heating

below

OF2 on control

speedup
&iver

a complete

is selected,

are available

drop

in wanner

lead from OF2 on control

to prevent

a few minutes

proximately

time period

only a brief 30

unit.

fan motor

3. Restart unit in heating
outdoor coil.

should
control

to outdoor

outdoor

(See Fig. 14). Tape

Defrost

field-selectable

Shift is in OFF position,

will be observed.

If it is desirable to observe a complete defrost
the thermostat
must be closed as follows.

after

compressor

and the fan will turn off for

in the heating

Control

is dependent
(30 seconds

of defrost

with

is shown

mode,

unit
into

upright
liquid

suction
that

position.
flow.

charge

metering
line.

allows
Check

Check

Puron
refrigerant
rel,rigerant

cylinder

To check

Chart

units

device in manifold

Some
liqnid

plate.

Only Procedure.

refer to Heating

operating,

commercial-type
dip robe

on unit rating

refer to Cooling

To check
Procedure.

with

liquid

hose. Charge

cylinders
to flow

label for correct

charge

using

refrig-

may contain
from

cylinder

position

a
in

to allow

COOLING ONLY PROCEDURE
NOTE:

If subcooling

charge

must be weighed

ozift of 3/8-in.

Table 3--Required

charging

liquid

conditions

in accordance

line above

are

not

favorable,

with unit rating plate

or below

_+0.6

15 ft respectively.

EXAMPLE:
To calculate

additional

charge

required

for a 25-ft line set:

25 ft - 15 ft

10 ft X 0.6 ozift

6 oz of additional

Units

with cooling

TXV require

installed

subcooling
i.

mode

charge

charging

with the

method.

Operate

unit

a mininmm

minutes

before

checking

charge.
2. Measure

liquid

service

gage to service
3. Measure

valve pressure

unit

liquid

to Heat

line

temperature

Pump

for required

5. Refer

intersects

6. To obtain required
line pressure,
higher
lower.

system

measured

subcooling

operation

Charging

during

heating

label

whether

a correct

and air temperature

charge
charge.

pressures

are

charge

mode,

stable.

refrigerant

If in doubt,

When

charging

ozift of 3/8-in.

liquid

necessary

in accordance

line above

additional

25 ft - 15 ft
Step

15--Final

Securely

fasten

2. Tighten
3. Leave

all panels

service
User's

and periodic
4. Fill out
file.

leaving

maintenance

Dealer

areas,

such as coastal

56
58

237

244

251
258

79
8!

74
76

69
7!

64
66

265

272
279

84
86

79
8!

74
76

69
7!

285

293

300
307

9!
93

86
88

8!
83

76
78

IO0

349

102

chart

355
363

103
105

98
100

93
95

88
9O

system

370

106

101

indoor and outdoor
system

377
384

107
109

102
104

97
99

92
94

to adjust

391

110

105

IO0

398

112

107

102

405
412

113
114

108
109

103
104

98
99

419

115

110

105

IO0

425

117

112

107

102

433
440

118
119

113
114

108
109

103
104

447

120

115

110

105

454

122

117

!12

107

451
458

123
124

118
119

!13
114

108
109

475

125

120

!15

!10

482
489

126
127

121
122

!16
117

111
!12

495

129

124

!19

!14

503
510

130
131

125
126

!20
!21

115
!16

517

132

127

122

!17

524

133

128

!23

118

in manual.

531
538

134
135

129
130

!24
125

!19
!20

in customer

545

136

131

!26

!21

552

137

132

!27

!22

559
565

138
139

133
134

128
!29

!23
!24

573

140

135

!30

125

580

141

136

131

!26

587
594

142
143

137
138

!32
!33

!27
128

501

144

139

!34

!29

508

145

140

!35

!30

refer to the Heat
unit.

This

between
on chart,

charge

only

when

and weigh

heating

season,
_+0.6

15 ft respectively.

charge

be sure to do the following:

Explain

past ringer
system

Checklist

and place

applications.

6!
63

342

charge

depending

66
68

82
84

outlined

may vary

7!
73

tight.

operation

high performance
and to minimize
possible equipperiodic
maintenance
nmst be performed
on this

of maintenance

223
230

87
89

equipment.
Frequency

92
94

CARE AND MAINTENANCE
For continuing
ment failure,

97
99

requirements

Installation

328
335

for a 25-ft line set:

owner.

215

and covers.

with

209

if temperature

valve stem caps to 1i12-tum
Manual

48
50

6 oz of additional

job,

53
55

Checks
Before

58
6O

during

required

i0 ft X 0.6 ozift

IMPORTANT:
i.

charge

63
65

EXAMPLE:
To calculate

195
202

with unit rating plate

or below

charge.

must be weighed

Do not use chart

remove

321

exists

refrigerant

188

314

do not match

check

181

5
56

SUBCOOLING TEMPERATURE
(°F)
10
15
20
51
46
41

outdoor

entering

may not be correct.

In heating

liquid

(°F)

REQUIRED

temperature

line

cycle,

relationship

and temperature

refrigerant

NOTE:

valve pressure.

at a specific

if liquid

pressure

refrigerant

subcooling

PROCEDURE

Instructions

If pressure

on outdoor

required

temperature

operating

correct

where

liquid service

indicates

NOTE:

label

line near

temperature.

the point

CHART

an accurate

to liquid

Instructions

add refrigerant

CHECK

To check

units.

attaching

than indicated or reclaim refrigerant
Allow a tolerance of_+ 3°F.

HEATING

Pmnp

Charging

3. Find

thermometer

subcooling

to Table

temperature

an accurate

port.

thermistor
type or electronic
outdoor coil.
4. Refer

by attaching

Liquid-Line Temperature

LIQUID PRESSURE
AT SERVICE VALVE
(PSIG)
174

upon

geographic

PURON(_QUICK

REFERENCE

GUIDE

Puron refiigerant operates at 50-70 percent higher pressures than R-22. Be sure that servicing equipment and replacement
components are designed to operate with Puron.
Puron refrigerant cylinders are rose colored.
Recovery cylinder sel-vice pressure rating must be 400 psig, DOT 4BA400 or DOT BW400.
Puron systems should be charged with liquid refrigerant. Use a commercial type metering device in the manifold hose.
Manifold sets should be 750 psig high side and 200 psig low side with 520 psig low-side retard.
Use hoses with 750 psig service pressure rating.
Leak detectors should be designed to detect HFC refiigerant.
Puron, as with other HFCs, is only compatible with POE oils.
Vacuum pumps will not remove moisture from oil.
Do not use liquid-line filter driers with rated working pressures less than 600 psig.
Do not install a suction-line filter drier in liquid line.
POE oils absorb moisture rapidly. Do not expose oil to atmosphere.
POE oils may cause damage to certain plastics and roofing materials.
Wrap all filter driers and sel-vice vanes with wet cloth when brazing.
A liquid-line tilter drier is required on every unit.
Do not use an R-22 TXV.
If indoor unit is equipped with an R-22 TXV, it must be changed to an Puron TXV.
Never open system to atmosphere while it is under a vacuum.
When system must be opened for sel-vice, break vacuum with dry nitrogen prior to opening to atmosphere.
Always replace filter drier after opening system for sel-vice.
Do not vent Puron into the atmosphere.
Do not use capillary tube coils.
Obsel-ve all warnings,

cautions, and bold text.

SERVICE TRAINING

Packaged Service Training programs are an excellent way to increase your
knowledge of the equipment discussed in this manual, including:
• Unit Familiarization • Maintenance
• Installation Overview • Operating Sequence
A large selection of product, theory, and skills programs is available, using popular
video-based formats and materials. All include video and/or slides, plus companion
book.
Classroom Service Training plus "hands-on" the products in our labs can mean
increased confidence that really pays dividends in faster troubleshooting, fewer
callbacks. Course descriptions and schedules are in our catalog.
CALL

FOR FREE CATALOG

1-800-644-5544

[ ] Packaged Service Training [ ] Classroom Service Training
A94328

2003 CARRIER

Manufacturer
Book_ 1_ 4
Tab 15al 5a

Corp. • 7310 W. Morris St • indianapolis,

reserves the right to discontinue,
PC 101

Catalog No

533-80082

IN 46231

38yxa4si

or change at any time, specifications
Printed in U.S.A.

Form

or designs

38YXA-4SI

without

notice
Pg 12

and without
2-03

incurring

obligations.

Replaces:

38YXA-3SI

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Title                           : 
Subject                         :

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Carrier 38YXA030 SERIES330 User Manual HEAT PUMP Manuals And Guides L0411019

CARRIER Air conditioner/heat pump(outside unit) Manual L0411019 CARRIER Air conditioner/heat pump(outside unit) Owner's Manual, CARRIER Air conditioner/heat pump(outside unit) installation guides

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