Carrier 38TDB037300 User Manual SPLIT SYSTEM Manuals And Guides L0211023

CARRIER Air conditioner/heat pump(outside unit) Manual L0211023 CARRIER Air conditioner/heat pump(outside unit) Owner's Manual, CARRIER Air conditioner/heat pump(outside unit) installation guides

User Manual: Carrier 38TDB037300 38TDB037300 CARRIER SPLIT SYSTEM - Manuals and Guides View the owners manual for your CARRIER SPLIT SYSTEM #38TDB037300. Home:Heating & Cooling Parts:Carrier Parts:Carrier SPLIT SYSTEM Manual

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38TDB
WeatherMaker TMTwo-Speed
Air Conditioning Unit with Puron®

HEAI1NG & COOLING

Visit

WW w.calTit_r+com

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

the entire

instruction

--_ indicates

a change

SAFETY
hnproper
installation,
or use can cause
conditions

which

damage.
distributor
installer

or branch
or agency

packaged
Follow

cause

must

use factory-authorized

codes.

and follow

injury,

service

Refer

Wear

"kits or accessories

when

all warnings

cloth
Read

or your

The qualified

to the individual

instructions

installing.

safety, glasses,

quenching
available.

or property

agency,

or assistance.

the kits or accessories

all safe_

the

the last issue.

personal

installer,

for information

and work gloves.
Use
Have fire extinguisher
oughly

death,

this product.

with

starting

CONSIDERATIONS

a qualified

when modifying

since

before

adjustment,
alteration,
service, maintenance.
explosion,
fire, electrical
shock, or other
may

Consult

manual

protective

clothing,

for brazing operations.
these instructions
thor-

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.
When you see this symbol
manuals,

be alert

Understand
TION,
symbol.
result

these

signal

DANGER

identifies

in severe

which could

is used

to identify
injury

highlight

result
unsat_

suggestions

reliability,

DANGER,

WARNING,

are used
or death.

in personal
practices

with

hazards

which

WARNING

which

would

damage.

will

signifies

wUl result

result
NOTE

in enhanced

in minor
is used to

installation.

or operation.

5. Avoid direct tubing contact with water pipes, duct work, floor
joists, wall studs, floors, and walls.
6. 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.)
tubing

rounds vapor

V_I

Outdoor unit contains
indoor unit of the

system refrigerant
same
size when

or factory

tion, check refrigerant
on control box cover.
IMPORTANT:
residential

gas pulsations
I. Locate

from

unit away

operation

sound

2. Ensure that vapor
capacity
of unit.
Manufacturer

noise

improper

410At

in the living

m'ea has been traced to

filter driers

installation

of equipment.

may disturb

patios, decks,

etc. where unit

the right to discontinue,
Catalog No. 533-80059

are appropriate

sur-

Pdnted in U.S.A.

charge for operation with
connected
by 15 fl of

tubing. For proper

using charging

liquid-line

Only

install
liquid

from your local

Step l_heck

unit opera-

information

located

size is 3/8 in. O.D.

for all

the

factory-supplied

line filter

drier.

Obtain

Puron®

(R-

replacement

distributor.

INSTALLATION
Equipment and Job Site

UNIT

Move to final location.
unit.

or change at any time, specifications

accessory
charge

Maximum

air conditioner

UNPACK

customer.

and liquid tube diameters

recycles
PC 101

RECOMMENDATIONS

from windows,

and completely

applications.

IMPORTANT:

cases

is pliable

9. Isolate hanger straps from insulation by using metal sleeves
bent to conform to shape of insulation.

field-supplied

In some

insulation

tube.

8. When necessary, use hanger straps which are 1 in. wide and
conform to shape of tubing insulation. (See Fig. 2.)

Before installing, modifying, or servicing system, main electrical disconnect switch must be in the OPT 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.

NOTE:

by avoiding

4. When passing refrigerant tubes through the wall, seal opening
with RTV or other pliable silicon-based caulk. (See Fig. 2.)

7. Ensure that

INSTALLATION

as possible

CAU-

the safety-alert

injury or death. CAUTION

and property

which

3. Run refrigerant tubes as directly
unnecessary, turns and bends.

injury.

the most serious
injury

or product

for personal

words

personal

haz,'u'ds
personal

words:

These

Fig. 1reModel 38TDB

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

to the potential

and NOTE.

A98516

or designs

Form 38TDB-4SI

without

Remove

carton,

taking care not to damage

notice and without
Pg 1

8-02

incurring obligations.
Replaces:

38TDB-3SI

3/8-1N.DIA TIEDOWN
KNOCKOUTS IN BASEPAN

- VAPOR TUBE
INSU L/_TION

_L_

_ __

__ --2:_

THROUGH THE WALL

I
STRAP----,

IJ_-J°'sT

(A_AONTU(
NEB_

8 3/16"

0 _VAPOF1

TUBE

A97548

Dimensions

IQUID TUBE

(In.)

SUSPENSION

TIEDOWN KNOCKOUT
LOCATIONS

A01383

UNIT SIZE

Fig. 2--Connecting
INSPECT

MINIMUM MOUNTING
PAD DIMENSIONS

Tubing Installation

024

19 X 24

2-13/16

6-15/16

036-060

26 X 32

9-3/4

EQUIPMENT

File claim with shipping company prior to installation if shipment
is damaged or incomplete.
Step 2--Install

Fig. 3---Mounting

on a Solid, Level Mounting Pad

conditioner, the R-22 TXV must be replaced
approved Puron® TXV.

If conditions or local codes require the unit be attached to pad, tie
down bolts should be used and fastened through knockouts
provided in unit base pan. Refer to unit mounting pat_m in Fig. 3
to determine base pan size and knockout hole location.
On rooftop applications, mount on level platform or frame. Place
unit above a load bearing wall and isolate unit and tubing set from
structure. Arrange supporting members to adequately support unit
and minimize transmission of vibration to building. Consult local
codes governing rooftop applications.

--_ IMPORTANT:

The

indoor

be level

to within

_+2° (-+3/8 in.fit).
---)

Step

3--Clearance

Requirements

When

installing,

allow

sufficient

wiring,

refrigerant

piping,

service

end of unit and 48 in. above

and service.

Allow

airflow
30-in.

clearance,
clearance

unit. For proper airflow,

so water,

directly
Step

snow,

outdoor

and the maximum
125°F.

roof or eaves

filter drier

Installing

TXV

I. Remove

ambient

in cooling

ambient

cannot

supplied

TXV kit.

mounted

wrench

upright

down.

be installed

to the

position.

Avoid

A factory

in the liquid

supplied

line.

of Piston
refrigerant

to atmospheric

piston

surface

fall

and ensure

pressure

coil

inlet

to prevent

coil has not been

for more

tube

than

at piston

15 minutes.

body

inieL

Use

damage.

retainer,

begin

careful

not to damage

scaling

of O-ring.

4. Remove

mode is 55°F,

in cooling

should

must

any existing

back-up

operating

a factory

factory

and in a vertical,

in Place

indoor

6. Replace

outdoor

TXV

tube vertically

2. Remove

5. Reinstall

and discard

factory-installed

piston.

(Replace

retainer

is damaged.)
piston
indoor

retainer

in piston

coil inlet tube.

body.

Use back-up

wrench

to prevent

damage.

mode is

TXV

fan coils and furnace

coils come factory

bi-flow,

hard

specifically

shut

off TXV

units. No TXV changeout

equipped

designed

is required.

with a

for Puron®

An existing

TXV must be replaced with a factory approved
cally designed
for Puron® two-speed
units.

TXV

R-22

7. Sweat swivel

specifi-

attach
avoid

NOTE:
TXV.

approved

Ambient

Puron®
two-speed

the inlet

if O-ring

4_Operating

5--Install

mounting

3. Remove

on unit.

The minimum

Step

or ice from

includes

do not include

a 6-in.

clearance
on l side of unit and i2 in. on all remaining
sides must
be maintained.
Maintain
a distance
of 24 in. between
units.
Position

The

coil as possible

• exposed
space for

unit

with a factory-

INSTALLATION

IMPORTANT:

Unit must

38TDB037

TXV kit. All other sizes
TXV

NOTE:

Unit to Pad

FK4, FC4, and 40FK fan coils are equipped with an R-22
If an FK4, FC4, or 40FK fan coil is used with a Puron® air

to TXV
damage

adapter
(see

(see Fig. 5D) to inlet of indoor
Fig. 5A)

to tubing

or valve.

"IN" to liquid line. Avoid
valve

outlet.

Use

backup

Sweat Inlet

excessive

coil and

wrench

of TXV, marked

heat which

could damage

SENSING BULB --

BULB

TUBE

8 O'CLOCK J

4 O'CLOCK-A00399

Fig. 6_Positioning
EXPANSION
VALVE

4. Remove

TXV using a backup

prevent
A91277

Fig. 4--TXV

wrench

on flare connections

damagetotubing.

5. Using wirecuUers, cutequalizertubeoffflushwithvaportube
inside cabinet.

Installed

6. Remove

8. Install vapor elbow (see Fig. 5B) with equalizer adapter to
suction tube of line set and suction connection to indoor coil.
Adapter has a l/4-in, male connector or attaching equalizer
tube.

7. Braze

bulb from vapor mbe inside
equalizer

necessary

stub-tube

to prevent

closed.

damage

cabinet.

Use protective

barrier

to drain pan.

----)IMPORTANT: Route the equalizer tube of the approved Puron®
TXV through suction line connection opening in fitting door prior
to replacing fitting panel around tubing.

9. Connect equalizer tube of TXV to l/4-in, equalizer fitting on
vapor line adapter.

8. Install TXV (Fig. 5A) with 3/8-in. copper tubing through
small hole in service panel. Use wrench and backup wrench,
to avoid damage to tubing valve.

I0. Attach TXV bulb to horizontal section of suction line using
bulb straps provided. (See Fig. 5C.) Insulate bulb with
factory-supplied insulation tape. (See Fig. 5E.) See Fig. 6 for
correct positioning of sensing bulb.
11. Proceed with remainder of unit installation.

9. Reinstall

10. Attach

---)"FAN COIL

location
straps.

To obtain efficiency rating for 38TDB037 with FV4ANB006
fancoil TXV must be replaced with factory supplied TXV.
Replacing R-22 TXV or Non-Balance

of Sensing Bulb

sensing

TXV
TXV

support
bulb

as ori_nal
(See

clamp

(removed

vapor

tube

bulb.

inside

was when removed,

Fig. 5C.) See Fig.
Insulate

bulb

in item 3).
cabinet,

6 for correct

with

in same

using supplied

bulb

positioning

factory-supplied

insulation

tape. (See Fig. 5E.)

Port Puron TXV

11. Route equalizer tube through suction connection opening
(large hole) in fitting panel and install fitting panel in place.

l. Remove any existing refrigerant and ensure coil has not been
exposed to atmospheric pressure for more than 15 minutes.

12. Sweat inlet of TXV, masked "IN" to liquid line. Avoid
excessive heat which could damage valve.

2. Remove coil access panel and fitting panel from front of
cabinet.

13. Install vapor elbow (see Fig. 5B) with equalizer adapter to
vapor line of line set and vapor connection to indoor coil.
Adapter has a l/4-in, male connector for attaching equalizer
tube. (See Fig. 5B.)

3. Remove and save TXV support clamp using the 5/16-in. nut
driver. Save the clamp.

14. Connect equalizer tube of TXV by l/4-in, equalizer fitting, on
vapor line adapter. Use backup wrench to prevent damage to
equalizer fitting.
15. Proceed with the remainder of unit installation.
LONG-LINE APPLICATIONS

For refrigerant piping arrangements with equivalent lengths
greater than 50 ft or when elevation difference between indoor
and/or outdoor unit is more than 20 ft, follow all requirements of
the Long-Line Guideline section in the Application Guideline and
Service Manual--Air Conditioners and Heat Pumps Using Puron® Refrigerant.
E
Step 6_Make

BULB
iNSULATION
TAPE

Piping Connections

A01418

including solenoid valves.
Fig. _TXV

Kit Contents

LIQUID-LINE
FILTER-DRIER

SERVICE
VALVE

A01215

To prevent damage to unit or service valves, observe the
following:
• Use a brazing shield.
• Wrap service valves with wet cloth or use a heat sink
material.

Fig. 7--Filter

1. Braze 5 in. connector

2. Braze

vapor tube to fitting on outdoor

Connect

liquid tube to filter drier.

SWEAT

CONNECTION

Service

valves are closed

field

moisture in the system.

VAPOR

Tube
Diameter

service

valve

and factory

Leak

Table liRefrigerant
Connections and
Recommended Liquid and Vapor Tube
Diameters (In.)
VAPOR

Tube
Diameter

5/8

3/4

microns.
Deep

036

3/8

3/4

7/8

037, 048

3/8

7/8

060

3/8

7/8

1-1/8

7/8

1- 1/8

Notes:
1. Tube diameters are for lengths up to 50 equivalent ft.
2. Do not apply capillary tube indoor coils to these units.

tubes
Always

Vacuum

The

deep

TO FACTORY-APPROVED

Triple

Evacuation

pmnp

is capable

does not contain
follows:
I. Pump system

method

4. Close service
Refer

AND

tubing.

INDOOR

COIL

to Fig. 7

should

be evacuated

to 500

with dr3, nitrogen.

requires

a vacuum

pump

capable

is the most positive

method

of pumping

a system

should only be used

when

down to 28 in. of mercury

vacuum

and system

any liquid water. Refer to Fig. 9 and proceed

down

to 28 in. of mercury
for an additional

valves

cylinder

pressure

and allow

pump

a.s

15 minutes.

and shut off vacuum
and regulator

pump.
to system

and open

is 2 psig.

valve and allow system to stand for 1 hr. During

this time, dry, nitrogen
system,

way of _ssuring

water. (See Fig. 8.)

Method

a nitrogen

until system
DRIER

coil

a vacuum

operating

service

3. Connect

line is required.

and refrigerant

TUBING

pulling a minimum vacuum of 500 microns and a vacuum gage or
thermistor capable of accurately memsuring this vacuum depth. The

2. Close

of filter drier in liquid
filter drier as follows:

a wet cloth,

Method

vacuum

continue

Installation
and install

outdoor,

and indoor
break

deep vacuum method

Outdoor unit contains correct system refrigerant charge for operation with indoor unit of same size when connected by 15 fi of
field-supplied
or factory-accessory
tubing. Check refrigerant
charge for maximum efficiency

FILTER

braze

in indoor,

The triple evacuation

LIQUID-LINE

After

with

joints.

is free of air and liquid

INSTALL

from factory, and ready for brazing.
and filter drier

REFRIGERANT

Reliigerant

5/8

of filter drier in liquid

valves.
1.)

(LONG-LINE)

Connection
Diameter

3/8

Installation

unit vapor service

(See Fig. 7and Table

using industry accepted methods and materials.
solder (materials
which melt below
800°F).

test all joints

EVACUATE

3/8

CONNECTED

tube to

coil.

CHECKING

024

OUTDOOR
UNIT
INDOOR
UNIT

tube and liquid

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

LEAK

Connection
Diameter

Wrap

TUBING

sweat connections
Do not use soft

If refrigerant tubes or indoor coil are exposed to atmosphere, they
must be evacuated to 500 microns to eliminate contamination and

Tube
Diameter

connector

must point tow,'u-d indoor

Connect

wrapping

Do not bury lines over 36 in. long.

LIQUID

coil. Flow arrow

REFRIGERANT

valve.

cloth.

filter drier between

indoor

Refer to Table 1 for field tubing diameters. Refer to Table 2 for
accessory requirements.

Connection
Diameter

tube to liquid line service

filter drier with damp

Outdoor units may be connected to indoor section using accessory
tubing package or field-supplied refrigerant grade tubing of correct
size and condition. Tubing diameters listed in Table I ,are adequate
for equivalent lengths up to 50 ft. For tubing requirements beyond
50 ft. substantial capacity and performance losses will occur.
Follow the recommendations
in the Application Guideline and
Service ManualIAir
Conditioners and Heat Pumps Using Puron® Refrigerant to minimize losses.

UNIT
SIZE

Drier with Sweat Adapter Tube and
Liquid Tube

absorbing

will be able to diffuse

moisture.

throughout

the

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

50oo-4500 I I
4000

I •

_LEAK

35oo I I

o oooll

,25ooI |

_: 2000
1500

LEA

CONTACTOR

[F,ELDPOWE.
]
v3, fd

A__

[
•

....... ....

I I
"1--1_

1000

._"

VACUUM TIGHT
TOO WET

_
IF

FIELD GROUND

-Q

WIRING

TIGHT

GROUND
LUG
A91306

500 _TEM
0

Fig, 10_Line

MINUTES

A95424

FINAL

CHECK

Electrical

ROUTE

GROUND

Remove

access

Connections

Be sure field wiring complies with local and national fire, safety,
and electrlzzal 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
in._tall unit in system where voltage may fluctuate above or below
permissible limits.
NOTEt Use copper wire only between disconnect switch and

control

CONNECT

ground

safety.
IO.

Connect

VACUUM

WITH

[

per

440-14

of NEC.

WIRES
to unit

wiring

NEC

wiring.

Extend

hole provided

but not

Route

control

24v

counect

thermostat

wires

and into unit

smaller

than minimum

wiring

must
power

outdoor

to leads

in control

provided

box

as shown

through

control

wiring

in control

box.

(See Fig.

color-coded,
more

voltage

excessive

WIRES

connection

for

in Fig.

WIR[NG

wires

is located

the control

The

wiring

to leads provided

Use No. 18 AWG

POWER

to _ound

power

CONTROL

All
DRY NITROGEN

size

within sight

Data Digest.

AND

_'ire

CONNECT

incoming
IBREAK

per

in Product

GROUND

Conae.ct

to avoid
I EVACUATE

power

Size wires

shown

POWER

disconnect

per Section

to gain access

thl_ugh

of adequate

Locate

from unit.

AND

panel

disconnect

curtera.

The unit cabinet must have as uninterrupted or unbroken
ground to minimize personal injury if an electrical fault
should occur. The ground may consist of electrical wire or
metal conduit when installed in accordance with existing
electrical codes. Failure to follow this warning can result in an
electric shock, fee, or death.

along

unit.

box.

wire size

circuit

accessible

from disconnect

IMPORTANT: Check to be certain factory tubing on both indoor
and outdoor unit has not shifted during shipment. Ensure tubes ,'ue
not nabbing 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 7_Make

branch

unit starting

from and readily

this procedure
as indicated in Fig. 9. System will then
minimal amounts of contaminants
and water vapor.

TUBING

Install

NEC to handle

Fig. 8---Deep Vacuum Graph
5. Repeat
contain

NOTE:

Power Connections

insulated
than

wires,

(35°C

drop.

be NEC

Class

must

wire. If

unit, as measured

16 AWG

i and

and

11.)

minimum)

100 ft from

use No.

voltage

grommet

color-coded

wire

be separated

from

leads.

unit

requires

a minimum

27va,

24vac

control

power.
IMPORTANT:
_ACUATE]

Check

temainations

ensure

,,vires are not in contact

Step 8_lnstall
IBREAK

VACUUM

WITH

DRY NITROGEN

[

to the individual

sories

when

LATENT

Evacuation Method

Electrical

Refer

and

properly.

wire
Check

with tubing,

connections

wire muting

sheet metal,

etc.

Accessories

A95425

packaged

of an LCC

CONTROL

kits or acces-

is to provide

fan coil or a 58CVA

control.

See

(LCC)
a dehumidification

assure a 75 percent or less system sensible
installed contains
an ECM blower (such
40FK

with

accessories
include latent capacity
accessory
wiring diagrams.

CAPACITY

The purpose

instructions

installing.

Available
electrical
Fig. I i for typical

ICHARGE
SYSTEM
I
Fig. 9--'rriple

wiring

are secured

GENERAL

_ACUATE]

CHECK
TIGHT,
SYSTEM
(|F IT FOR
HOLDS
DEEPDRY
VACUUM)

factory

ensure

or 58MVP

mode

heat ratio. If indoor unit
ax an FK4C. FV4A, or
gas furnace),

no LCC

VARIABLE
SPEED
CONDENSING
FURNACE

_ERMIDISTAT
CONTROL
MODEL
RH

HEAT

STAGE

TWO SPEED
AIR CONEdTIONER

STAGE

.....

I ...........

.....

_ W/Wf

....

_ vsv2_.....

_
HEAT

COOL

[_"
COOL

HEAT

TWO SPEED
AIR CONOITIONER

_"
HEAT

COOL

I_V(:_ STAG E
FURNACE
WITH PSC
BLOWER
MOTOR

TH ERMIDISTAT
CONTROL
MOOEL
RH

STAGE

2
COOL

FAN

STAGE

1_"
FAN

24 VAC HOT

24 MAC

HOT

.... _-

24 VAC

COMM

E_'.

.... _

{_'

DEHUMIDIFY

24 VAC COMM

HUMIDIFY

[[_].

....

"-----_-_

.......

.....

9:_

bitA

__',

HUMIDIFY
NfA

OUTCOOR
_[_

_.°;T,ON7
E_

--_-I
SENi%_(_

TION

_[_J-

See notes 1, 2, 3, 6, 8, 10, and 12
A01495
NON-pROGRAMMABLE
THERMOSTAT
MODEL
2S

FK4C, FV4A
)R 40FK

AIR

See notes 1, 2, 3, 6, 8, and 10
A01498

I_VO-SPEED
CONDITIONER

_0% NON

VARIABLE
SPEED
CONDENSING
FUANACE

FAN
COIL
IN ERMIDiSTAT
CONTROL

24 VAC HOT

24 VAC COMM

[_"

FAN

COOL

HEAT

STAGE

_ J, JUMPER

t_OEL

-[]-tN-@

BOARD
_

COOL

STAGE

HEAT

STAGE

HEAT

STAGE

COOL

STAGE

AFS
...........

7
FURNACE
BOARD

1
I

ED
AIR 17_O-,_E
CONDITIONER
m

-4 'wql
@

FAN

_ 2REMOVE
•_ _S,AG,NG

24 VAC

HOT

J2 JUMPER
FOR HEAT

H EAT STAG E 2

COOL

STAGE

{_--

24 MAC COM

-t_[]

DEHUMIDIFY

_-10

ou_ooN l-i_

Hu_,o,E¥ _

: .E COO.l
[]

OUTDOOR
"_NNS_RTEINS_

See notes 1, 2, 3, 4. and 7
A01496
THE RMIDISTAT
CONTROL
MODEL
RH

SINGLE-STAGE
FURNACE

_---7

__I

E _

Seen ores 1, 2, 3, 6, 8, 10, and 11
A01499

3_VC_SPEED
AIR CONDITIONER

NON-PROGRAMMABLE
THERMOSTAT
MODEL 2S

SINGtE-STAGE
FURNACE

AIR

TWO-SPEED
CONDITIONER

m
COOL

ST_E

1 r__,

HEAT

STAGE

1 [_

COOL

STAGE

2 r _]

FAN

24 V_

24 VAC HOT
24 VAC COMM

...... _ ......

HEAT STAGE

HOT

24 VAC COMM

[_"

1[_
{[_
1

COOLSTAGE2

...... @......

.....
{33.....
_q-[]
.....
El-.....
_q-[]

FAN

....

-El-

.....

]

.....

-q

--ITSl

N_
COOL

STAGE

[_-

-q-I'TTl

HUMIDIFY
N/A

[]

OUTDOOR r-ITq

--_-I
.....

See notes 1, 2. 3, 6. and 8
A01497

Fig. 11--Typical

See notes 1,2, 3, and 5
A01500

24V Wiring Diagram
6

VARIABLE
SPEED
80% NONJ3ONDENSING
FUF_NAGE
pROGRAMMABLE
"('_ERMOSTAT
MODEL
2S

SINGLE.STAG
FUHN h,C E

]3NO_SPEE
O
#,_R CONDITIONER

NON .pRoGt_AIV, M_BL_
THERMOSTAT
MODEL

8OPJ_L)

AF S
---_

COOL

STAGE

HEAT

STAGE

III

F_N_E
BOARD

AIR GONDI_IONIEF_
TWO'SPEED

IF_N

HEAT

STAGS

DOOL

I [_

STAGE

2
COOL

STAGE

NiA

24 VAC

HOT
24 VAC HOT

2_. VAG

G'_MM

-q-[_

[_-

NiA

24 VAC COM

[]

oo_oo°
[-l_

IPLg-

See notes 1.2, 3. and 5
A01501
STAGE

]_VO
NO N .pROGRAIv_t_A_LE
THERMOSTAT
MODEL
2S

24 VAC

FURNACE
PSC

WITH

BLOWER

TWO.SP_E

See note 1.2, 3. 4, and 10
A01504

A_R CONDITIONER

VARtABLE
SPEED
80% NON-CONDENSING
FURNACE

HOT

24VAt

COMM

[_I

HEAT

STAGE

COOL

STAGE

_pX3GRAk_f_UE
THERMOSTAT

_OA_D

FURNAC

STAGE
COOL
HE AT STP_3E

_'SPEED

ST,_

2
FA N

GOOL

;-_-_ --- -_-_

STAGE

N/A

i---I-_-E_

E_-"

HEAT
24 MACSTAGe_
HOT

---

_ [_-

--!_

_----

[]

OKJTOOO_R

p Lg._d
See notes 1, 2, 3, 4, and 10
A01502

F TWO*STAGE
RNAC
WITH
_Fs
8L(_WER

NON-PROGRAMMABLE
THERMOSTAT
MODEL 2S

AIR

TWOCON

P ED
[_T_'ON

R
E

MOTOR

L
COOL

STAGE
FAN

HEAT
COOL

See n_tes 1, 2, 3, 5, and 10
A01505
[_

STAGE

........
....-I ....
I

STAGE 2

24 VAC HOT

COMM

N/A

NON Jp_)GP_MM_LE
_¢_SRMOSTAT
NK)OEL 2S

.... $_1

HEAT STAGE 2

24 VAC

CONNECTIONS

[_-

[]

.....

,L_:AT STAGE

1 [_}-

'_E ik_ STP,G E 1
COOL S_.AG E 2

FAN

.....
[_'

COOL STAGE

VARIABLE. Sp_'I::D
CONDENSING
TWO-SPEE_
FURNACE
AIR CONOmONER

24 VAC HOT

[_
)EH

o Doo"
24 VAC COMM

See notes 1, 2, 3. 5, arid 10
A01503

See notes

Fig. 11--Typical

24V Wiring Diagram (Cont)

1.2, 3, and 4
A01506

THERMIDISTAT

pROgRAMMABLE
THERMOSTAT
MODEL2S

F'K4C
OR

FV4A
40FK

AIR

FAN COtL

MODEL

HOT

-NI

.....

COOL STAGE 1 @
COOL STAGE 2

COOL

STAGE

COOL

STAGE

HUT
HEAT

STAGE

REMOVE
J2 JUMPER

STAGE

_'STAGIN

_"
._

_FOR

TWO-OpEL
D
AIR CONDITIONER

°ELVEJ2 U2P
" FOR

HEAT

STAGING

.....

1
2

......
°

HEAT STAGE 1

_--

FAN

FAN COIL

HEAT STAGE 2

] MPER
24 VAC

FK4C. FV4A
OR 40FK

CONTROL

T_V O SPEED
CON DITIONEF_

rAN

24 VAC HOT

r_"

......

]

REMOVE
•, J1
JUMPER

HEAT
DEHUMIDIFY

24 VAC

COMM

N/A

OUTDOOR

24 MAC COMM

[]

HUMIOIFV

[]

OUTOOOR
_]_Tt

_=[_

See notes 1, 2, 3, 5, and 7
A01493

See notes 1,2, 3, 6, 7, 8, and 9
A01494

VARIABLE-SPEED
CONOENSING
FURNACE

PROGRAMMABLE
THERMOSTAT
MODEL2S

TWO_PEED
AIR CONDITIONER
m

; HEATSTAGE2
cool

r_-].

STAGE

HEAT STAGE
CooL

.....

STAGE 2

24 VAC HOT

....

24 VAC COMM

JilHUMI

N/A

See notes1, 2, 3, and 5
A01507

Fig. 11--Typical
required.

The LCC

standard

humidistat

pilot

duty relay

NOTE:

for standard
which

with

If an LCC

opens

PSC blower

products

contacts

on humidity

consists

24V Wiring Diagram (Cont)
of a

rise and a

24v coil.

AIRFLOW
COILS
The

is desired,

low-speed

airflow

tained so that a minimum
of 300 CFM/ton
high speed LCC operation,

must

be main-

can be supplied

during

SELECTION

FK4C

operation

and

Selections

AIRFLOW

FOR

The

SELECTION

58CVA/58MVP

speeds. To select recommended
or 40FK

Variable

FURNACES
Speed

Installation

Installation,

during

the
the

airflow and for adjustments
to the manual switches
A/C and CF on the control board refer to the furnace
Start-Up.

and Operating

utilizes a control
center
select the proper airflows.
high speed

lnsWuctions.

The

315AAV

that allows the installing
technician
to
The A/C switch determines
the airflow

compressor

operation.

high-

SELECT

and

of compressor
airflow,

Instructions.

The

control

This fan coil has an adjustable

Furnaces

provide
high- and low-speed
blower
operation
to match
capacities of the compressor
at high and low speeds. To select
recommended
labeled SWI,

provide

FV4A,

board

40FK

low-speed

Airflow

for hight and low

speed can be calculated
at either 350 CFM per ton or 400 CFM per
ton based on the positions
of SWl 5.

sec for high- and low-speed
For other
Digest.

combinations

blower
blower

of equipment

and low

refer to the FK4C,
FK4C.

FV4A,

that allows

FAN

blower

at high

FV4A,

and 40FK

the installing

technician
to select proper airflows.
For adjustments
board and recommended
A/C SIZE and CFM ADJUST

58CVA/58MVP

Non-Condensing

FV4A

FK4C,

to match the capacities

utilize an EASY

Step 9---Make Airflow

FOR

off delay factory

to control
selections.
set at 90

operation.
consult

the Product

Data

LEGEND
24 VOLT FACTORY

WIRING

24 VOLT FIELD WIRING
FIELD SPLICE CONNECTfON
RELAY SPDT, PILOT DUTY
24-V COIL (HN61 KK324)
OR EQUIVALENT
HUMIDISTAT, OPENS ON
HUMIDITY RISE (HL38MG026
AFS

AIRFLOW

SELECTOR

A01222

WIRING
1. WIRING

DIAGRAM
MUST

2. UNDERLINED
IN COOLING
3. REFER
TION.

NOTES:

CONFORM

LETTER
MODE.

TO INDOOR

ON THERMOSTAT

UNIT

4. NON-PROGRAMMABLE
CUT AND REMOVED.
5. PROGRAMMABLE

INSTALLATION

MODEL

6. THERMIDISTAT
DIP
(FACTORY
DEFAULT).
7. AS AN OPTION

DIP

2S01-B
NO.

MUST

TERMINAL

SWITCH

NO.

INDICATES

INSTRUCTIONS

USED

HAVE

1 SHOULD

CONTROL

DEHUMIDIFY

CODES.

2S0 I-B, WHEN

SWITCH

O/W22CAN

8. THERMIDISTAT
OPERATION.
9. TO ACTIVATE

TO NEC OR LOCAL

FUNCTION

SET

ACTIVATE

DEHUMIDIFY

FURNACE
DISCONNECT
DEHUMIDIFY
TERMINAL
12. THE DE JUMPERS

MUST

FEATURE

BE REMOVED

SET

Table

Coastal Filter
Puron_

REMOVE

USED

AND

AIR

O IS ENERGIZED

WIRING

INFORMA-

THE R 19 JUMPER

IN AIR CONDITIONER

FOR

STYLE,

FROM

THE

POSITION

Jl JUMPER

AND LET O/W2
SETUP.

FURNACE

DEHUMIDIFICATION

2--Accessory

CONDITIONER

MUST

APPLICATIONS.
APPLICATIONS

FOR

AT FAN
CONTROL

COIL
HIGH

CONTROL

FEATURE

CAPACITY

COMPRESSOR

CONTROL

BOARD.

FIRE OPERATION.

PERCENT
BOARD

REFER

NON-CONDENSING,
AND

CONNECT

ON FURNACE.

REQUIRED

FOR

SEACOAST
APPUCATIONS
(WITHIN 2 MILES)
Yes

Recommended

Yest

Yes'i"

• For tubing line sets between 50 and 175 ;1horizontal or 20 It vertical differential, refer to Application Guideline
Using Puron@ Refrigerant. Crankcase heater and start assist are standard on twc_speed units.
1"Required for all applications.

DUAL

Usage

LONG-MNE
APPUCATIONS*
(50-175 FT.)
No

Support Feet
Balance-Port Hard
Shut-off TXV

FOR

VARIABLE-SPEED,

G ON

REQUIRED
ACCESSORY

FEATURES

INSTALLATION

POSITION

IN THE

CURRENT

TO ENABLE

O/W2 MEANS

HEAT.

ON FK4 OR FV4.

GREEN
(DEHUM)
WIRE
DHUM ON THERMIDISTAT.

ADDITIONAL

C ON WHEN

IN OFF

10. AS AN OPTION, LOCK FURNACE
INTO LOW-FIRE
OPERATION
TO FURNACE
INSTALLATION
INSTRUCTIONS
FOR PROPER
11. TO

FOR EXAMPLE:

IN AIR CONDITIONING

SECOND-STAGE
2 SHOULD

FOR ANY

DIP SWITCH
BE

USAGE.

and Service Manual--Air

Conditioners

and Heat Pumps

Control Box
Side of Unit

THERMISTOR PLACED
UNDERNEATH BASE PAN
(ATTACHED TO BASE PAN
WITH ADHESIVE)
A00430

Low Pressure
€-Switch Connector

Fig. 14-_View

_- High Pressure
Switch Connector
4-Thermistor
Connection

F_ [,-IZIIj_]]Z.YJ
To prevent

Defrost Time , .*_'
Selectors
r'_J',_-

_7 "_"
"-'

Low Volt age HJ_=
Connector
E--

clothing,

injury

gloves

• Back seating

O.D.R Connection
Crankcase Heater
Connection

personal
and

wear

when

safety

handling

glasses,

lefrigerant

protective
and observe

the following:

] CT°apRaUcnt
or

from Top of Base Pan

valves.

Fully

removing

service
back

gage

valves

are not equipped

seat (counterclockwise)

with Schrader

valve stem before

port cap.

Reserved tor
Future Use
A01192

Fig. 12_ontrol

Board

these

1. The

THERMISTOR

CURVE

operates
heater

90 ,

80_

I
I

I
-I -

_
I
_

_
I
T

40 _----_--

•

NOTE:

,•,
I

noise

starting

is off.

without

a minimum

damage

and vapor

3. Unit

is shipped

with

valve

stem(s)

Replace

flow

additional

seated).

Replace

disconnects

valves.

seated

and caps

is opened

to refrig-

caps finger tight and ti_aten

1/12 turn (20 ft-lb torque)

electrical

tube service

front

stem caps after system

(back

of 12 hr of

in a compressor

to the compressor.

liquid

installed.

heater only, set

may result

(open)

erant

which

crankcase

and close power disconnect

to initial start-up,

and possible

heater

Energize

unit. To energize

to OFF position

back seat

with wrench.

to energize

system.

........

100

120

5. Set room

TEMPERATURE(DEG. F)
A91431

Fig. 13--Resistance

NOTE:

Step lO--Start-Up

between
or personal

injury,

observe

the following:

ambient

electronic
timer.

operating
for

at high

system

with refrigerant.

• Do not operate

unit in a vacuum or at negative

• Do not disable

low-pressure

room

speed

(after

pressure.

point

at least

5° below

15 minutes.
NOTE:
a unit
demand,

Be sure set point

and is set low enough

timer

speed

to energize

there

and themtostat

upon

unit operates

in low

a 5°F difference

set point. To force high

in low speed),

to COOL and fan control
refrigerant

the

system

adjust

the set

ambient.

If unit has not operated
power-up,

is at least

of 2 minutes
room

with a 15-

the two-speed

unit has been operating

Walt for appropriate
Check

,are equipped

prevents

until

unless

temperature

a minimum

as desired.

switch.

temperature.

thermostats

This

15 minutes

6. Set room thez_ostat

• Do not overcharge

at desired

speed.

staging

speed

damage

indoor

Carrier

minute

Values Versus Temperature

from

compressor

thermostat

is be]ow
desired

To prevent

with a crankcase

compressor

the compressor

heat prior

4. Close
n

the

2. Fully

Starting

chattering

when

start up the system:

is equipped

24 hr before

crankc:kse

•

to properly
unit

indoor thermostat
to unit.

I
I
-'I-

steps

outdoor

to AUTO

time delay(_).

Operate

or ON
unit for

ch,'trge.
within

the past

tbem_ostat

for a minimum

12 hr or following

high-

of 5 minutes

or low-speed
in high speed.

Step 11_Check

Charge

Table 3--Required

Liquid-Line Temperature

(°F)

REQUIRED SUBCOOLING
TEMPERATURE
(°F)

LIQUID
PRESSURE AT
SERVICE VALVE
(PSIG)

189

195

52404

202

2O8

215

on pink charging

222

with

229

236

243

251

259

266

274

charge must be weighed in accordance
with unit rating plate _+0.6
oz/ft of 3/8-in. liquid line above or below 15 ft respectively.

283

291

EXAMPLE:

299

3O8

317

326

335

345

354

100

364

102

1O0

374

104

102

100

384

106

104

102

1O0

395

108

106

104

102

100

temperature.

406

110

108

106

104

102

100

required

subcooling

416

112

110

108

106

104

102

valve pressure.

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

r!_l _1]_
Service

valve

valves.

is connected

ports

back

when

handling

seated

UNIT

CHARGE

Facto_

charge
With

position.

equipped
make

Wear

and charging

refrigerant

suction

into

charge

metering

Schrader
manifold

moving

valves

glasses

may

cause

to the compressor.

NOTE:

subcooling

and gloves

Puron®

units

in manifold

liquid using
hose.

Charge

in high capacity

compressor

charging

calculate

only. Ch_ging

chattering

conditions

additional

are

charge

ONLY

1. Operate

and possible

not

favorable,

required

for a 25 ft

line set: 25 ft - 15 ft = 10 ft X 0.6 oz/ft = 6 oz of additional
COOLING

off

line.

damage

are shown

device

Unit is to be charged

capacity

with

sure gage

safety

method

unit operating,
type

low

not

injury,

refrigerant.

a commercial
NOTE:

are

personal

to the valve gage ports before

fully

label.

gage

To prevent

charge.

PROCEDURE

unit

a minimum

minutes

before

checking

charge.
2. Measure

liquid service

gage to service
3. Measure

valve pressure

line

temperature

thermistor
type or electronic
outdoor coil.
to Table

4 for required

5. Refer

to Table

3. Find

intersects

line

pressure,

higher
lower.
UNIT

required

attaching

the point

where
liquid

an accurate

to liquid

subcooling

measured

service

subcooling

temperature

add refrigerant

if liquid

line near

at a specific
line

than indicated or reclaim refrigerant
Allow a tolerance of ± 3°F.

liquid

temperature

ff temperature

CHARGE

Factory. charge

,and charging

label.

Puron®
liquid

allows
position.

method

are shown

on pink charging

refrigerant

cylinders

contain

a dip tube which

refrigerant

to flow

Charge

a commercial
refrigerant
NOTE:
low

thermometer

4. Refer

6. To obtain

an accurate

port.

liquid

temperature

by attaching

Puron
type

metering

into suction

may

cylinder

in upright

in upright position

device

manifold

in high

capacity

hose.

and

Charge

cause

damage

to the compressor.

NOTE:

If subcooling

compressor

only. Charging

chartering

and

the unit returns

to low-speed

or until second

stage

second

line.

Unit is to be charged

capacity

from

units with cylinder

stage cooling

NOTE:

power-up,

demand,
charging

conditions

are

not

unit operates

NOTE:

favorable.

upon

When

plate ± 0.6

(suction)

oz/ft of 3/8-in. liquid line above or below 15 ft respectively.
EXAMPLE:
To calculate additional charge required for a 25 fi line

speed

system

set: 25 ft - 15 ft = IO fi x 0.6 oz/ft = 6 oz of additional

of Operation

minute after compressor
than or equal to 100°F.

functions.

STATUS

charge

must be weighed

Step 12--Systern
The

outdoor

unit

Functions
control

following

is an overview

COOLING

OPERATION

This

product

in accordance

utilizes

and

with unit rating

system

Sequence
has

special

of the two-speed

a 2-stage

call for first stage cooling

cooling

control

indoor

(Y1), the outdoor

fan

NOTE:

charge.

The

functions:

thermostat.

With

stage

of indoor

thermostat.

After

second

unit is operating
operation.

FUNCTION

motor

will

high-

of 5 minutes

or high-speed
fan

wig shut

and
off.

low-speed

on high-speed.

at low speed,

system

than a standard

continue

to operate

shuts off. when outdoor

ambient

single-

for

one

is greater

LIGHTS

STATUS

function

light is located

on the outdoor

unit control board. (See Fig. 12.) The STATUS
light provides
indication
signals for several system operations.
See Table 5 for

codes

and low capacity

stage

for a minimum

will be higher

Outdoor

both first stage

within the past 12 hr, or following

pressure

A system control

and definitions.

Table

5 also provides

the order

of signal

importance.

compressor
are energized.
If low capacity
cannot satisfy cooling
demand, high capacity is energized
(YI and Y2 or Y2 only) by the
second

When

the compressor

the next thermostat

two-speed

vapor

until first stage is satisfied

again.

are satisfied,

If unit has not operated

a unit

possible

operation

is required

is satisfied,

NOTE:

Only

control

board

one

code

will

(the most recent,

be displayed

with the highest

the outdoor
priority).

unit

4--High

Table

switch

Capacity Only Subcooling

or compressor

will continue

overload

to operate

should

fall motor

after the compressor

shuts

UNIT

TXV TYPE EXPANSION
DEVICE
HIGH CAPACITY ONLY
SUBCOOLING
AT SERVICE VALVE

024

t4°F

The control

senses

036

15°F

compressor

voltage

037

11°F

calling for compressor

048

12°F

060

16°F

15 minutes with outdoor fan nmning. After 15 minutes (provided
there is a call for Y 1 or Y2). control attempts to start compressor.

off when the outdoor
COMPRESSOR

During
Table

5--Control

Function

LED

Code
SIGNAL
IMPORTANCE*

ambient

VOLTAGE

(Vc)

3 consecutive

capacity

operation

requests

until

is locked

a reset

1 flash
w/pause

Low-speed operation

•

2 flashes
w/pause

High-speed

•

no 240 volt power

•

failed

•

failure of start relay

•

improper

Outdoor

failure (6 flashes)

coil thermistor failure

Thermistor out of range

5 flashes
pause
1 flash

Low pressure switch trip

during

The

High pressure switch trip

Compressor

Constant light
No pause
No flash

VJV. trip

unit

trip (refer to Table

to outdoor

to pick-up

Factory
outdoor

either

signal request; 1

the compressor

defaults
have
air thermistor,

been provided
in the event of failure of
coil thermistor,
and/or
furnace interface

MINUTE

SPEED

When

compressor

CHANGE

changes

TIME

speeds

error

the

eccentric

compressor
with

becomes

The start

restarts.

energize

fan is turned

MAJOR

COMPONENTS

2-Speed

Control

operates

the rotating

crankshaft

the lower

stage
and

and both

operation,

upper

idle and the upper

piston

pistons

compress

operates
in single stage
(rotates counterclockwise).

HEATER

The two-speed

in second

Both

and run windings

CRANKCASE

compresses

the

code

refriger-

operation
the
The lower
refrigerant.

the cr,-mkcase

heater during

The outdoor

unit control

is operating.

I-minute

The

appropriate

compressor

energizes

speed

outdoor

fan remains
change

time

fan any time compresdelay

during

contactor.

,after a 15 minute

off. If the open
delay,

beard

then resume

controls

switch

delay,

closes

operation

the following

the

anytime

on call for

functions:

operation

monitoring

Compressor

dual

capacity

provide

2-pele (3500

winding

resistance.

which relieves
energized

compressor

Dual Capacity

lnternai

The compressor

OPERATION

outdoor

ISee

control received 24vac low-voltage
control system
the screw connections
on the left side of the control

Compressor

unit off cycle.
FAN MOTOR

ligbt.

The two-speed
inputs through
board.

The

are reversed.

control board energizes

on the status

Field Connections

are

OPERATION

OUTDOOR

control

Pressure switch
Time delays

clockwise.

contactor.

Crankcase
heater operation
Compressor
protection

The

OPERATION

ant. When the compressor
motor reverses
direction
piston

compressor

or low

for 15 minutes,

Low- and high-compressor
contactor
Outdoor fan motor operation

from high to low or low to high,

there is a l-minute
time delay before
outdoor fan motor remains running.
COMPRESSOR

DELAY

low-pressure

a high

low or high.

The two-speed

ONE

rotates

and
of

delay, if Y1 or Y2 inputs are on and the LPS

is reset,

after the 15-minute
Y1 and/or Y2.

jumper.

motor

high-

low or high speed

fan operating

the appropriate

outdoor

DEFAULTS

When

unit

with

5. If LPS or HPS has not closed
*Function light signal order of importance in case of multiple
is most impodant.

6 for correct

properly

equipped

4. After a 15 minute

in a

low and
voltage

or HPS
Board failure

occur

PROTECTION

the outdoor

3. Display

low

to Y2

contactor(s!

SWITCH

outdoor

Table

6 flashes
w/pause

responds

wiring

De-energize

If Vc

then

by:

overload
supply

compressor

2. Keep

pause
2 flashes

board,

trips

off for

request,

and control

switches,
If the control senses the opening
pressure switch, it will respond as follows:

5 flashes

FACTORY

at control

a YI

board

shuts compressor

If 3 consecutive

can be caused

compressor
internal
winding resistance)

PRESSURE

pause
4 flashes

conlrol

out

occurs.

NO demand
Stand by

4 flashes
w/pause
3 flashes

run winding.
control

combination
of YI and Y2 or all Y2 requests, then both
high capacity operation will be locked out. The compressor

Constant flash
NO pause

Outdoor thermistor failure

of the compressor

limes

to 100°F.

(6 FLASHES)

is less than 90v when

operation,

DEFINITION

3 flashes
w/pause

th,'m or equal

FAILURE

the voltage

CODE

operation

is greater

this time. a code of 6 flashes appears

trip occurs

sor

open. Outdoor

lbr one minute

tial between

the

compressor

is protected

by an internal

gas into compressor

and discharge

compressor
is also protected
motor windings.

and if a pressure

motor

windings

Refer to Table

that

6 for correct

Relief

discharge
suction

contains

RPM ) operation.

pressures

by an internal

pressure

relief

(IPR)

shell when differenexceeds
overload

525 psi. The
attached

Table

6_Two-Speed

(Winding
WINDING

Resistance
024

with adhesive
be used.

Compressor
at 70°F ± 20 °)

036-037

IMPORTANT:
060

048

0.740

Start
(S-C)
Run (R-C)

2.280
0.770

1.8500.5521.459
0.745

tape. A small piece of TXV

0.356

If outdoor

underneath
bose
frame faults.

pan,

Step

Checks

1a--Final

IMPORTANT:
Compressor

Control

Contactors

1. Ensure

Low and high capacity contactor coils are 24 volts. The electr_mic
control board controls the operation of the low speed tC-L_ and the
high speed

(C-H)

TEMPERATURE
Thermistors

the temperature
increases,
are used to sense outdoor
Fig. 13 tbe resistance

appears

3. Leave
which

sense

temperature.

versus

see

job,

placed
out

be sure to do the following:

and tubing

co\ers.

properly
thermistor

is secure

Securely

in unit

panels

and

service

valve stem caps to 1/12-turn

past finger

Manual

system

Owner's

4. Fill out
file.

should

with owner.

maintenance

Dealer

fasten

all

before

panels

and

Explain

requirements

outlined

Checklist

and place

Installation

tight.

operation

in manual.
in customer

CARE AND MAINTENANCE

fail. a fault code

control.

For continuing

Air Thermistor

Placement

ment

failure,

high performance
periodic

and to minimize

maintenance

must

Mount

outdoor

pan lip on

equipment.

Frequency

of maintenance

control

box side of the unit as shown in Fig. 14. Attach to base pan

geographic

areas,

as coastal

air thermistor

is not

nuisance

temperature.

or coil thermistor

Outdoor

leaving

all wiring

and periodic

the resistance
decre,x_es. Tbemtistors
ambient and coil temperature.
Refer to

values

ambient

at two-speed

IMPORTANT:

2. Tighten

THERMISTORS
devices

may

tape may

covers.

contactors.

are electronic

If the outdoor

adding

air thermistor

unit

Before
that

bulb insulation

underneath

unit

base

such

may vary

applications.

possible

performed
depending

equipon this
upon

DU___TY

CONNECTION DIAGRAM u
208/230- 1- 60
L2.....

_,
_

Ye_

eLK
_aLK

BJ
RE])

PLll

_1 21 _141
51[_
HP/AC C SEV RVS C
HI LO 9[,2
LPS

LL22
BU--

b'lA_r

N_I

Fig. 15---Wiring Diagram--024,

036, 048
A01513

RR)

NoIrEWI0

,_u,,2,a,,15,C:L:nt_
I-IP/ACC EXV ri_

FI LO _

u'slaw j

]
F-,_

I_
t

_ \

"_-II_' 14q0_
BRN

Y'I_7r--

•

,wl_] - .....
,
CLV,
OJ----_ ,,
__ , ,,,

RI_-7',

i
L '

vc _

A B C D
, _
_

Cl2f _tu
_'
t2 _

l,,',, '
'

•

CCH_

I_P

Ooi

7
10 ImOOR tiNT

Fig. 16---Wiring

Diagrams037
A01439

CONNECTION

PUI

DIAGRAM

1 k
HP/AC

21
C

El .......

3 L

eLK

RVS

51_
C

I
HI

LO P[2

OAT

COMM

STA]IJG OCT

vc
A

B C

L2
CCH :

VH
ODF_

F
TO INDOOR UNIT

--> Fig. 17--Wiring

Diagram-_060
A02212

rescues

PC 101

Coq_. ° 7310 W. Morris St. ° Indianapolis,
the right to discontinue,
Catalog

No.

533-80059

IN 46231

38tdb4si

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

or dq_slgns without

Form 38TDB-4SI

notice and without
Pg 16

8-02

ihcurring Obligations.
Replaces: 38TDB-3Sl

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Carrier 38TDB037300 User Manual SPLIT SYSTEM Manuals And Guides L0211023

CARRIER Air conditioner/heat pump(outside unit) Manual L0211023 CARRIER Air conditioner/heat pump(outside unit) Owner's Manual, CARRIER Air conditioner/heat pump(outside unit) installation guides

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