CARRIER Air Conditioner/heat Pump(outside Unit) Manual L0211024

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

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38EZA, 38ETA, 38ESA
12, 13, 14 SEER Split-System
Air Conditioner with Puron®

HEATING & COOLING

Visit www.calrier.com

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

the

entire

instruction

indicates

a change

SAFETY

manual

since

before

starting

the

the last issue.

CONSIDERATIONS

Improper installation, adjustment, alteration, service, maintenance,
or use can cause explosion, fire. electrical shock, or other
conditions which may cause death, personal injury, or property
damage. Consult a qualified installer, service agency, or your
distributor or branch for information or assistance. The qualified
installer or agency must use factoty-authorized kits or accessories
when modifying this product. Refer to the individual instructions
packaged with the kits or accessories when installing.
Follow all safety codes. Wear safety glasses, protective clothing,
and work gloves. Use quenching cloth for brazing operations.
Have fire extinguisher available. Read these instructions thoroughly and follow all warnings or cautions included in literature
and attached to the unit. Consult local building codes and National
Electrical Code (NEC) for special requirements.
Recognize safety information. This is the safety-alert symbol ,_.
When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury.
Understand these signal words; DANGER, WARNING,
and
CAUTION. These words are used with the safety-alert symbol.
DANGER identifies the most serious hazards which will result in
severe personal injury or death. WARNING signifies hazards
which could result in personal injury or death. CAUTION is used
to identify unsafe practices which would result in minor personal
injury or product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation, reliability,
or operation.

Before installing, modifying, or servicing system, main electrical disconnect switch must be in the OFF position. There
may be more than 1 disconnect switch. Lock out and tag
switch with a suitable warning label. Electrical shock can
cause personal injury or death.

IRSTALLATION

RECOMMENDATIONS

1. Locate unit away from windows, patios, decks, etc. where unit
operation sound may disturb customer.
2. Ensure that vapor and liquid tube diameters are appropriate for
unit capacity.
_
PC 101

the right to diseontintm,
Catalog No. 533-80056

Fig. 1--Models

38EZA, 38ETA, 38ESA

3. Run refrigerant tubes as directly
unnecessary turns and bends+
4. Leave some
vibration.

slack between

as possible by avoiding

structure

and unit to absorb

5. When passing refrigerant tubesthrough the wall, seal opening
with RTV or other pliable silicon-based caulk. (See Fig. 2.)
6. Avoid direct tubing contact with water pipes, duct work. floor
joists, wall studs, floors, and walls.
7.

Do not suspend refrigerant tubing from joists and studs with a
rigid wire or strap which comes in direct contact with tubing.
(See Fig. 2.)

Ensure that tubing insulation is pliable and completely surrounds vapor tube,

9. When necessary, use hanger straps which are 1 in. wide and
conform to shape of tubing insulation. (See Fig. 2.)
10. Isolate hanger sWaps from insulation by using metal sleeves
bent to conform to shape of insulation.
When outdoor unit is connected to factory-approved indoor uniL
outdoor unit contains system refrigerant charge for operation with
indoor unit of the same size when connected by 15 fl of
field-supplied or factory accessory tubing. For proper unit operation, check refrigerant charge using charging information located
on control box cover and/or in the Check Charge section of thLs
instruction.

NOTE: In some cases noise in the living area has been traced to
gas pulsations from improper installatinn of equipment.

Manufacturer

A99327

IMPORTANT: Maximum liqnid-line size is 3/8-in. O.D. for all
residential applications including long line.
IMPORTANT: Always install the factory-supplied liquid-line illter drier. If replacing the f'dter drier, refer to Product Data Digest
for appropriate part number. Obtain replacement falter driers from
your distributor or branch.

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

or designs without notice and without

Form 38ESA-3SI

Pg 1

9-O2

incurring obligations,
Replaces: 38ESA-2SI

O'CLOCK

SWEAT

CONNECTION

2
SENSING

Service

valves

wrapping
SUCTION

TU_

sweat

8 O'CLOCK
LARGER

THAN

7/s IN. OD
A81032

Fig. 5--Position

from factory

valve

connections

and filter

using industry

and ready

drier

with

accepted

for brazing.

After

a wet cloth,

braze

methods

and materials.

Consult local code requh-ements.
Refrigerant
tubing and indoor
coil are now ready for leak testing. This check should include all

4 O'CLOCK

7/8 IN. OD & SMALLER

are closed

service

field

and factory

EVACUATE

joints.

REFRIGERANT

TUBING

AND

INDOOR

COIL

of Sensing Bulb
Never

11'.,_
["T_T_T_,_j
If ANY refrigerant tubing is buried, provide a 6 in. vertical
rise at service valve, Refrigerant tubing lengths up to 36 in.
may be buried without further special consideration. Do not
bury lines for lengths over 36 in.

use the system

compressor

as a vacuum

pump.

Refrigerant tubes and indoor coil should be evacuated using the
recommended deep vacuum method of 500 microns. The alternate
triple evacuation method may be used if the procedure outlined
below is followed. Always break a vacuum with dry nitrogen.
Deep Vacuum Method
The

To prevent
following:

damage

to unit

• Use a brazing

shield

• Wrap service
material.

valves

or service

valves

observe

the

deep

pulling

accurately
method

with

wet cloth

or use

a heat

sink

Outdoor units may be connected to indoor section using accessory
tubing package or field-supplied refrigerant grade tubing of correct
size and condition. For tubing requirements beyond 50 ft, substantial capacity and performance losses can occur. Following the
recommendations
in the Application Guideline and Service
Manual -- Residential Split-System Air Conditioners and Heat
Pumps Using Puron® Refrigerant will reduce these losses. Refer
to Table 1 for field tubing diameters. Refer to Table 2 for
accessory requirements.
No buried-line applications greater than 36 in.
If refrigerant tubes or indoor coil are exposed to atmosphere, they
must be evacuated to 500 microns to eliminate contamination and
moisture in the system.
OUTDOOR UNIT CONNECTED TO FACTORY-APPROVED
INDOOR UNIT
Outdoor unit contains correct system refrigerant charge for operation with ARI rated indoor unit with highest sales volume when
connected by 15 ft of field-supplied or factory-accessory tubing.
Check refrigerant charge for maximum efficiency.
INSTALL LIQUID-LINE

FILTER DRIER

method
this

is the most positive
water.

Evacuation

requires

of 500 microns

measuring

and liquid
Triple

vacuum

a vacuum

pump

and a vacuum

vacuum

depth.

way of assuring

The

capable

gage capable

deep

vacuum

a system is free of air

(See Fig. 7.)
Method

The triple evacuation method should only be used when vacuum
pump is only capable of pumping down to 28 in. of mercury
vacuum and system does not contain any liquid water. Refer to
Fig. 8 and proceed as follows:
1. Pump system down to 28 in. of mercury and allow pump to
continue operating for an additional 15 minutes.
2. Close service valves and shut off vacuum pump.
3. Connect a nitrogen cylinder and regulator to system and open
until system pressure is 2 psig.
4. Close service valve and allow system to stand for 1 hr. During
this time, dry nitrogen will be able to diffuse throughout the
system absorbing moisture.
5. Repeat this procedure as indicated in Fig. 8. System will then
be free of any contaminants and water vapor.
FINAL

TUBING

CHECK

IMPORTANT: Check to be certain factory tubing on both indoor
and outdoor unit has not shifted during shipment. Ensure tubes axe
not rubbing against each other or any sheet metal. Pay close
attention to feeder tubes, making sure wire ties on feeder tubes are
secure and tight.
Step 8_Make

Electrical Connections

Refer to Fig. 6 and install filter drier as follows:
1, Braze 5-in. connector tube to liquid service
drier with damp cloth.
2, Braze filter
indoor

drier between

connector

coil, Flow arrow must point

REFRIGERANT

valve.

Wrap

tube and liquid
towards

indoor

filter

tube to
coil.

TUBING

Connect vapor tube to fitting on outdoor
Connect liquid tube to filter drier.
refrigerant grade tubing.

unit vapor

service

(See Fig. 6 and Table

valves.
1.) Use

Be sure field wiring complies with local and national fire, safety,
and electrical codes, and voltage to system is within limits shown
on unit rating plate. Contact local power company for correction of
improper voltage. See unit rating plate for recommended circuit
protection device.
NOTE: Operation of unit on improper line voltage constitutes
abuse and could affect unit reliability. See unit rating plate. Do not

CONNECTOR
TUBE
A99331

Fig. 6--Liquid-Line
Tabl,

1--Refrigerant

Connections

and Recommended

Connection Diameter

018, 024

3/8

030, 036

3/8

042, 048
060

3/8

Tube Diameter
3/8
3/8
3/8
3/8

3/8

Liquid Line and Vapor Tube Diameters (In.)

VAPOR

LIQUID

UNIT
SIZE

Filter Drier

Connection

Diameter

VAPOR (LONG LINE)
Connection Diameter
Tube Diameter

Tube Diameter

5/8

3/4

3/4
7/8

7/8

1-1/8

7/8

1-1/8

7/8

1-1/8

NOTES:
f, Tube diamefers are for lengths up to 50 tt. For tubing lengths greater than 50 ft horizontal, or greater than 20 fl vertical differential, consult the Application
and Service Manual -- Air Conditioners and Heat Pumps Using Puron_ Refrigerant.
2, DO not apply capillaw tube indoor coils to these units.

Table 2--Accessory
ACCESSORY

Crankcase

Heater

Usage

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

REQUIRED FOR
LONG-MNE
APPLICATIONS*
(OVER 5OFT)
Yes

REQUIRED FOR
SEA COAST
APPLICATIONS
(WITHIN 2 MILES)
No

Yes

Yeet
No

Compressor Start Assist
Capacitor and Relay
MotorMastarO Control,
or
Low-Ambient Pressure Switch

Yes

Wind Baffle

See low-ambientinstructions
No

Evaporator

Freeze Thermostat

Winter Start Control
Accumulator

Yes

Coastal Filter
Solenoid Valve
or
Hard Shutoff TXV

Yes

See Long-Line
Application
Guideline

Yee$

Liquid-Line

Ball Bearing Fan Motor

• For tubing line sets between 50 and 175 ft, refer to Application Guideline and Service Manual -- Air COnditioners and Heat Pump= Using Puron_
_- Only when low-pressure switch is used.
:_ Required for low-ambient controller (full modulation feature) and MotorMaste_
Control only.

install unit in system
permissible
limits.
NOTE:
unit.

UsE copper

NOTE:

Install

where
wire

voltage
only

may fluctuate

between

circuit

NEC to handle unit starting
from and readily accessible
ROUTE

GROUND

Remove

access

from disconnect
cont,'o[ box.

panel

disconnect

switch

The

and

of adequate

size

per

current. Locate disconnect
within sight
from unit, per Section 440-14 of NEC.

AND POWER

unit

wiring

to unit wiring.
hole provided

Extend

cabinet

must

to minimize

should

occur.

metal

conduit

have
personal

The ground
when

an uninterrupted
injury

if an

may consist

installed

CONNECT

wires

and into unit

GROUND

Connect
ground wire
safety. Connect power

AND

in accordance

POWER

or unbroken
electrical

of electrical

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

WIRES

to gain access

through power

Reffigerant.

above or below

ground
branch

Guideline

with

fault
wire

existing

can result in an

WIRES

to ground connection
in control box for
wiring to contactor as shown in Fig. 9.

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

5000
4500
4000
3500

aooo

SYSTEM

W,R,NG
'1 OC>
P.ASEONLY
S

_ 2500

i2ooo

l
I,_

1500
1000
50O

r_:_ ...................

FIELD POWER

_VAC;U UM TIGHT
TOO WET

TIGHT
DRY SYSTEM

;

CONTACTOR

FIELD GROUND
WIRING

; ; 7

[

GROUNO
LUG

MINUTES

A94025

A95424

Fig. 7--Deep

Fig. 9_Line

Vacuum Graph

Power Connections

A crankcase heater is required if refrigerant tubing is longer than
50 ft. Refer to Application Guideline and Service Manual -Residential Split-System Air Conditioners and Heat Pumps using
Puron@ Refrigerant.

EVACUATE]
IBREAK VACUUM WITH DRY NITROGEN]

Step 10---Install Electrical Accessories
Refer to the individual instructions
sories when installing.

[EVACUATE]
IBREAK VACUUM WITH DRY NITROGEN I

Step 11--Start-Up

To prevent compressor damage or personal injury, observe
the following:
•Do not overcharge system with refrigerant.
•Do not operate unit in a vacuum or at negative pressure.
•Do not vent refrigerant to atmosphere. Recover during
system repair or final unit disposal.
•Do not disable low-pressure switch.
In scroll-compressor applications:
•Dome temperatures may be hot.

[EVACUATE]

CHECK FOR TIGHT, DRY SYSTEM
( F IT HOLDS DEEP VACUUM)
I
} CHARGE SYSTEM

I
A9_25

Fig. 8---Triple

Evacuation

packaged with kits or acces-

Method

CONNECT CONTROL WIRING
Route 24v control wires through control wiring grommet and
connect leads to control wiring. (See Fig. l I.)
To prevent personal injury wear safety glasses, protective
clothing, and gloves when handling refrigerant and observe
the following:
•Back-seaimg service valves are not equipped with Schrader
valves. Fully back seat (counterclockwise) valve stem before
removing gage-port cap.
•Front-seating service valves are equipped with Schrader
valves.

Use No. |8 AWG color-coded, insulated (35°C minimum) wire. If
thermostat is located more than I00 ft from uint, as measured
along the control voltage wires, use No. 16 AWG color-coded wire
to avoid excessive voltage drop.
All wiring must be NEC Class l and must be separated from
incoming power leads.
Use furnace U'ansformer, fan coil transformer, or accessory tramformer for control power, 24v/40va minimum.
NOTE: Use of available 24v accessories may exceed the minimum 40va power requirement. Determine total transformer loading and increase the transformer capacity or split the load with an
accessory transformer as required.
FINAL WIRING CHECK

• 3-phase scroll compressors are rotation sensitive.
• A flashing LED on phas,e monitor indicates reverse rotation.
(See Fig. 10 and Table 3.)
• This will not allow contactur to be energized.
• Disconnect power to unit and interchange 2 field wiring
leads on unit contactor.

IMPORTANT: Check factory wiring and field wire connections
to ensure terminations are secm'ed properly. Check wire routing to
ensure wires are not in contact with tubing, sheet metal, etc.
Step 9---Compressor
Crankcase Heater
When equipped with a crankcase heater, furnish power to heater a
minimum of 24 hr before starting unit. To furnish power to heater
only, set thermostat to OFF and close elecuical disconnect to
outdoor unit.

these

I. After

steps

system

to properly
is evacuated,

vapor service

fully back seat

(open)

replace

front

stem caps

after

seated
system

refrigerant
flow. Replace caps finger-tight
wrench an additional
1/12 turn.
electrical

4. Set room
is below

mode,

indoor

ambient

(closed)

and

is opened

and tighten

12_heck

UNIT

CHARGE

to
with

charge

system.

device

and charging
Puron®

in manifold

NOTE:
plate

Be sure set point

Charge

tion plate. Charge

hose.

If superheat

favorable,

temperature.

charge

-+ 0.6

oTJft

Charge

be weighed
3/8-in.

Operate

and fan control

three phase models
with a phase

and

outdoor

thermostat makes

Check

units.

to detect

for compressor

Transformer

R-G energizes

the units

outdoor

are equipped

power

If the phasing

starting

Table 4---Required

is correct,

relay,

circuit

starting

indoor

on high speed.
the phasing

To correct

is incorrect,

the pha,(mg,

on the field side.

When

thermostat

is satisfied,

and blower

If indoor

unit

relay.

is equipped

blower

runs

contactor

interchange

connections

contactor

the

its

contacts

Compressor
with

sec

not

de-energizing

and motors

a time-delay

an additional

will

any two of the three

open,

relay
to

stop.
circuit,

increase

the

system

efficiency.
CONTACTOR

24VAC

COn

(
OFF;NO
ON:OK
FLASH:PHASE

24VAC
PROBLEM

A00010

Fig. lO--Phase
Table 3--Phase

LIQUID
PRESSURE AT
SERVICE VALVE

line

above

are not

with unit rating
or below

15 ft

Monitor Control

Monitor Led Indicators

LED

STATUS

OFF

No call for compressor operation

FLASHING
ON

Reversed phase
Normal

Liquid-Line Temperature

(°F)

REQUIRED SUBCOQLING
TEMPERATURE
(QF)
8

189

195

202

208

215

222

229

236

243

251

259

266

274

283

291

299

308

317

326

335

345

354

100

364

102

100

374

104

102

100

384

106

104

102

100

395

108

106

104

102

100

406

110

108

106

104

102

100

416

112

110

108

106

104

102

427

114

112

110

108

106

104

439

116

114

112

110

108

106

450

118

116

114

112

110

108

462

120

118

116

114

112

110

474

122

120

118

116

114

112

486

124

122

120

118

116

114

499

126

124

122

120

118

116

511

128

126

124

122

120

118

is correctly

fan motor and compres-

indoor unit blower

power

indoor

conditions

in accordance

system

R-Y and R-G. On

in the incoming

operation.

contactor,

motor

circuits

witb scroll compressors,

monitor

R-Y energizes

energized.

charging

line.

to ON or AUTO

unit for 15 minutes

to indoor

On a call for cooling,

NOTE:

liquid

metering

into suction

respectively.

energized.

blower

on unit informa-

OF OPERATION
power

sor circuit.

refrigerant

or subcooling

must

are shown

charge.

SEQUENCE

phased

method

units using a commercial-type

temperature.

to COOL

as desired.

to energize

at desired

thermostat

refrigerant

Turn

disconnects

thermostat

5. Set room

and

Step

Factory

with valve stem(s)

installed,

3. Close

liquid

valves.

2. Unit is shipped
caps

start up the system.

Table 5_Superheat
OUTDOOR

EVAPORATOR

TE:MP
(°F)

Charging

ENTERING

AIR TEMPERATURE

(_FWB)

76
45

21
18

24
21

19
15-

16
12

13
9

10
6

....

100

105

110

115

EXAMPLE:

To calculate

additional

charge

required

for a 25-ft

line set:

25 ft - 15 ft = 10 ft X 0.6 ovJft = 6 oz of additional
COOLING

ONLY

subcooling

7. Refer to Table 6. Find superheat temperature located in item 6

PROCEDURE

Units with Cooling
Units installed

charge

and suction pressure.
temperature.

Mode Puron® TXV

with cooling

mode TXV

require

charging

by the

unit

a nfinimum

10 minutes

before

temperature,
reached.

checking

charge.

9. [f unit

2. Measure

liquid service

gage to service
3. Measure

valve pressure

by attaching

an accurate

liquid

line

temperature

or electronic

attaching

an accurate

thermometer

liquid

subcooling

temperature.

5. Refer to Table 4. Find the point where required
subcooling
temperature intersects measured liquid service valve pressure.
6. To obtain

required

pressure,

higher
lower.

subeooling

temperature

add refrigerant

if liquid

at a specific
line

than indicated or reclaim refrigerant
Allow a tolerance of +_3°F.

Units with Indoor

liquid

temperature

if temperature

with indoor pistons

The following

procedure

require

charging

by the super-

21 percent
1. Operate

airflow

is within

suction

reclaim

refrigerant

line

temperature

until

than

charted

temperature

If outdoor air temperature or pressure at suction valve
changes, charge to new suction line temperature indicated on
chart.

Step

13_Final

1. Ensure

Before
that

2. Tighten
_

Cheeks

IMPORTANT:

3. Leave
is valid when indoor

a lower

adding refrigerant, charge in liquid form into suction
service port using a flow-restricting device.

adding
covers.

Pistons

Units installed
heat method.

has

than charted
temperature is

until charted

10. When

near
II.

4. Refer to unit rating plate for required

add refrigerant

temperature,
reached.

port.

thermistor
type
outdoor coil.

At this intersection, note suction line

8. If a unit has a higher suction line temperature

method.

I. Operate

line

Refer to Table 5. Find outdoor temperature and evaporator
entering air wet-bulb temperature. At this intersection, note
superheat.

leaving

all wiring

job, be sure to do the following:

and tubing

is secure

panels

and covers.

service

valve stem caps to 1/12-turn

User's

and periofftc

Manual

Securely

with

maintenance

owner.

fasten

in unit
all

before

panels

and

past t'tnger tight.

Explain

system

operation

requirements

outlined

in manual+

Checklist

and place

in customer

of its rated CFM.
unit

a minimum

10 minutes

before

4. Fill out
file.

checking

Dealer

Installation

charge.
2. Measure
suction
3. Measure
mistor
valve.
4. Measure
5. Measure

suction

pressure

valve service
suction

by attaching

an accurate

gage

CARE AND MAINTENANCE

port.

temperature

type or electronic

by attaching

thermometer

an accurate

to suction

ther-

line at service

For continuing
ment failure,

high performance
periodic

maintenance

and to minimize
must

possible

be performed

equipon this

equipment.
outdoor
indoor

air dry-bulb
air (entering

ture with a sling psychrometer.

temperature
indoor

coil)

with thermometer.

Frequency

wet-bulb

areas, such
mation.

tempera-

of maintenance
as coastal

may vary depending

applications.

See User's

upon
Manual

geographic
for infor-

Table 6--Required
SUPERHEAT
TEMP
(°F)
0

Suction-Line Temperature

SUCTION
107.8

112.2

PRESSURE

AT SERVICE

(°F WB)
PORT (PSIG)

116.8

121.2

126.0

130.8

138.8

140.8

145,8

6
8

55
57

57
59

4"7

22
24

LEGEND
24-v FACTORY WIRING
-

24-V FIELD WIRING
FIELD SPLICE CONNECTION
CONTACTOR

A97368

PURON® (R-410A) QUICK REFERENCE

GUIDE

• Puron® refrigerant operates at 50-70 percent higher pressures than R-22. Be sure that servicing equipment
replacement compenents are designed to operate with Puron_.

and

• Puren_ refrigerant cylinders are rose colored.
• Recovery cylinder service pressure rating must be 400 psig. DOT 4BA400

or DOT BW400.

• Puron_ systems should be charged with liquid refrigerant. Use a commercial type metedng device in the
manifold hose when charging into suction line with compressor operating.
• Manifold sets shoutd be at least 700 psig high side and 180 psig low side with 550 psig low-side

retard.

• Use hoses with 700 psig service pressure rating.
• Leak detectors shouk:l be designed to detect HFC refdgerent.
• Puroo_, as with other HFCs, is only compatible with POE oils.
• Vacuum pumps will not remove moisture from oil.
• Do not leave Puror_

suction line filter doers in line longer than 72 hrs.

• Do not use liquid-line filter dders with rated working pressures less than 60(3 psig.
• Do not install a suction-lLnefilter 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 dders and service valves with wet cloth when brazing.
• A tactory-appreved liquid-line filter 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 a Puron_ TXV.
• Never open system to atmosphere

while if is under a vacuum.

• When system must be opened for service, recover refrigerant, break vacuum
opening to atmosphere. Evacuate to 500 microns pdor to recharging.

with dry nitrogen prior to

• Always replace filter drier after opening system for service.
• Do not vent Purer_

into the atmosphere.

• Do not use cepUlary tube coils.
• Observe all warnings, cautions,

reserves
PC 101

and bold text.

Corp. • 7310 W. Morris St. • Indianapolis, IN 46231
the right to discontinue,
Catalog No. 533-80066

38esa3si

or change at any time, spe_irmations
printed in U.S,A,

Form

or designs

381=SA*3SI

without notice
Pg 12

and without
9_2

incurring obligations,
Replaces:

38ESA-2SI

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Page Count                      : 8
Page Layout                     : SinglePage
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Create Date                     : Fri Apr 20 12:52:11 2007
Author                          : 
Title                           : 
Subject                         :

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CARRIER Air Conditioner/heat Pump(outside Unit) Manual L0211024

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