Carrier 592-085 User Manual

ARCHITECTS AND ENGINEERS’ MANUAL

PREMIER SERIES 52P

COMFORT SERIES 52C

PACKAGED TERMINAL

AIR CONDITIONERS

AND HEAT PUMPS

CONTENTS

Page

APPLICATIONS

NewConstruction..............................3

Retrofit/Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

CarrierWarranty...............................3

ApplicationConsiderations ......................4

PRODUCT OVERVIEW .......................5

PRODUCT FEATURES AND BENEFITS ....6-13

QuietOperation ...............................6

MostEfficientPerformance......................6

EfficientFanMotor ............................6

No-Rust Weather Last™ Wall Sleeve and

FrontPanel .................................7

RemovableFrontPanel .........................7

Anti-TheftKnobs..............................7

Two-PieceLifetimeIndoorFilter..................8

Washable Vent Air Filter . . . . . . . . . . . . . . . . . . . . . . . . 8

Bi-Directional Discharge Grille . . . . . . . . . . . . . . . . . . . 8

PowerCordfor265-VUnits .....................9

Power Cord Protection for 230/208-V Units . . . . . . . . . 9

Bi-MoldedCondenserShroud....................9

SnowBaffle ..................................9

Easy Access to Chassis. . . . . . . . . . . . . . . . . . . . . . . . . 10

HiddenControls..............................10

EnhancedCopperTubing.......................11

............................ 3,4

Page

SeamlessBasepan ............................11

CondensateDrainValve........................11

CondensateRemovalSystem....................11

HeatPumpsPayTheirOwnWay.................12

HeatPumpEnergySavings.....................13

ORDERING DATA ...........................14

ProductCatalogNumber.......................14

FACTORY-INSTALLED OPTIONS ...........15

FIELD-INSTALLED ACCESSORIES ...... 16-26

DIMENSION DRAWINGS AND
INSTALLATION DATA — NEW
CONSTRUCTION

PRODUCT DATA ......................... 34-41

EXPANDED RATINGS DATA...............42,43

SOUND DATA ...............................44

WIRING DIAGRAMS ..................... 45-50

52PQand52CQ............................45,46

52PEand52CE ............................47,48

EnergyManagement/FrontDeskControl ..........49

Single Thermostat/Multiple PTAC Units . . . . . . . . . . . 50

GUIDE SPECIFICATIONS ................ 51-53

TYPICAL WARRANTY ....................54,55

ACCESSORY LIST ..........................56

......................... 27-33

For more information available on the internet, see the www.carrier.com or www.lodgingAC.com web sites.

December 2004 CopyrightCarrier Corporation Cat. No. 592-085

Valued Carrier Customer,

Carrier’s Architects and Engineer’s manual has been specifically developed to make your
product and accessory selection easier and faster. This manual will help you customize
your application to ensure the greatest comfort for your guests and the highest reliability
and lowest costs for you.

Enjoy the ultimate in comfort, humidity control, and energy savings with Carrier’s com­plete line of Packaged Terminal Air Conditioning (PTAC) products. Choose from either
the Premier series (52P) which is Carrier's most energy efficient PTAC unit ever, or the
Comfort series (52C) for mid-range energy efficiency and outstanding value.

The Premier and Comfort series PTAC lines have many common features and benefits.
The 52P and 52C units are both built on the same platform with common components and
airflow systems to ensure the highest quality product for your money. The most significant
difference between the 52P and 52C products is the refrigerant system. The Premier refrig­erant system utilizes Carrier's highest efficiency compressors and coil design to achieve
maximum energy efficiency. The Comfort refrigerant system uses our standard efficiency
compressors and coils to attain competitive efficiency levels which exceed the industry
standard ARI minimum-efficiency levels.

It’s your choice. Choose the Premier series and start recovering your investment immedi­ately through energy savings, or choose our Comfort series and enjoy years of economical,
trouble-free operation and comfort.

Thank you for choosing Carrier and investing in the highest quality air conditioning and
heating system ever.

Best regards,

Lodging Products Group

2

APPLICATIONS

Whether you are designing a new structure or replac­ing packaged terminal air conditioning units in an
existing building, Carrier will meet your needs.

• Hotels and motels

• Nursing homes and assisted living care centers

•Offices

• Apartments

• Single-family dwellings

• Home conversions and residential add-ons

NEW CONSTRUCTION

The Carrier 52P and 52C Packaged Terminal Air Con­ditioning (PTAC) unit is designed to meet the needs of
the architect, engineer, and contractor. For unit instal­lation, Carrier’s expert support network will assist in
all applicable aspects of the construction project, from
preparing a budget to start-up.

ADVANTAGES FOR NEW CONSTRUCTION
Design Flexibility For The Architect/Engineer

• Super-quiet performance, indoors and out

• No bulky duct system

• No separate equipment room

• No water towers or additional cooling equipment

• No complex match-up of different HVAC
components

• Less sensitivity to building orientation (sun, wind,
shade)

• Optional architectural grille to permit custom exte­rior appearance

Initial Cost Savings For The Building Owner

• No expensive component HVAC system purchase

• No equipment room or maintenance engineering
staff

• Two-part delivery to minimize on-site damage

• Weather-protected wall sleeve that goes in place
during construction; chassis that slides in place after
construction

• No seasonal changeover required for cooling or
heating — units are self-contained comfort systems

Lower Operating Costs And Reliable Comfort
For The Occupant

• Heat pump models offer substantial savings over
models with conventional electric resistance heaters

• Individual units allow tenants to choose the degree
of comfort and operating economy.

• Rapid servicing reduces downtime: complete chas­sis can be replaced in minutes without disrupting
other occupants.

• Each unit operates independently of other units in
the building. No dependency by building on central
HVAC system.

RETROFIT/REPLACEMENT

If you are replacing a unit in an existing wall sleeve,
your options include:

• Replace the existing wall sleeve with a Carrier
Weather Last™ sleeve. See accessory sleeve sec­tion for selecting the correct sleeve for your appli­cation. Note, in most cases, when replacing the wall
sleeve, the exterior grille must also be replaced.

• Use an existing sleeve and exterior grille. The
Carrier 52P and 52C series PTAC will fit into most
major competitors wall sleeves/grilles, including
GE, Amana, Trane, Bryant, Carrier 52S and Carrier
52B, and NO accessory retrofit kit is required.
Carrier units will also retrofit into Friedrich T series
and ZoneAire wall sleeves, with a required wall
sleeve extension (see accessory Friedrich Retrofit
Wall Sleeve Adapter).

IMPORTANT: All other sleeve or exterior grille
retrofit applications need prior approval from
Carrier. Please contact your Carrier representative
for assistance.

CARRIER WARRANTY

Carrier’s five-year warranty is the most comprehen­sive in the industry. Carrier provides:

• Full coverage for parts and labor for first year.

• Four additional years of full coverage on sealed
refrigeration systems.

• Limited second through fifth year coverage on non­refrigeration system parts.

3

APPLICATIONS (cont)

APPLICATION
CONSIDERATIONS

Installation instructions are shipped with all PTAC
units. It is important that air conditioning systems be
properly sized and installed for each application in
order to achieve the desired temperature and humidity
levels within the space to be conditioned. It is strongly
recommended that a professional engineer match the
PTAC units with the building structure and climate.

The following application considerations are all
important in choosing the proper PTAC system for the
building structure.

Undersizing

If a PTAC unit is undersized (cooling capacity is less
than required capacity for an application), the unit will
not be able to cool the space down to the desired tem­perature during very hot days. The result could be
warm and humid or warm and dry conditioned space.

Oversizing

If a PTAC unit is oversized (cooling capacity is greater
than required capacity for the specific application), the
unit will cool the space down to the desired tempera­ture too quickly.

The unit will cycle on and off, however, dehumidifica­tion only takes place when the unit is operating. The
result of this type of application in a hot and/or humid
climate would be a cool, yet excessively humid, space.

Air Infiltration

Excessive air infiltration can intensify problems asso­ciated with undersizing or oversizing a PTAC unit.
This can be the cause of insufficient cooling, dehumid­ification, or heating. Sources of air infiltration include
vents, gaps around windows and doors, and improp­erly sealed floors, ceilings or wall joints.

4

PRODUCT OVERVIEW (52P AND 52C)

This section summarizes product features covered in
detail in later sections of this manual:

2 AIR
FILTERS

LOUVERED
FRONT
PANEL

2-WAY BI-MOLDED
DISCHARGE
GRILLE

CONTROL
DOOR

WIRE SCREEN

FRESH AIR
CONTROL
ARM

CONDENSER
SHROUD

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PLUG TEST/
RESET BUTTONS

THERMOSTAT WITH
TEMPERATURE
LIMITER

ACCESS TO ELECTRICAL
INDOOR
COIL

COMPONENTS THROUGH

CONTROL BOX DOOR

MODE
SELECTION
SWITCH

BASEPAN FOR
CONDENSATE
REMOVAL

COPPER TUBE
ALUMINUM
FIN COILS

ROTARY
COMPRESSORS

WALL
SLEEVE

Polymer, Metal or Extended Wall Sleeve — Designed for rugged duty, acoustic absorption, and attractive appearance for years to
come.

Rotary Compressors — Provide quiet, reliable operation.

Copper Tube Aluminum Fin Coils — Enhanced coils provide durability, high performance, and ease of operation.

Fresh Air Control Arm — Allows outdoor air into room through vent filter for improved air quality.

Fan Cycle Switch — Dual options:

(1) Continuous fan operation.
(2) Cycle fan ON and OFF with compressor operation.

Thermostat with Temperature Limiter — Provides improved temperature control with a temperature limiter that allows tempera­ture range restraints for the unit by making a simple adjustment.

Anti-Theft Knobs — Provides protection against theft of the thermostat knob and the mode selection knob.

Control Door — Provides protection for controls and enhances appearance.

Easy Access to Electrical Components — Simply remove two screws and drop down the control box door.

Improved Condensate Removal — Minimizes condensate water on outside of building.

New Two-Piece Filter Design — Provides improved air filtration and can be removed easily for cleaning.

Durable Discharge Grille — Made of polycarbonate; holds up under the toughest conditions.

Louvered Front Panel — Made of high impact polystyrene. Provides improved performance and quiet operation.

Mode Selection Switch — Rotary switch allows for easy selection of operating mode.

Bi-Molded Condenser Shroud — The two-piece condenser shroud allows easy access for service and maintenance to the out-

door coil and other components.

Power Cord Protection — Power cord for the 230/208-v unit provides power cord protection.

5

PRODUCT FEATURES AND BENEFITS (52P AND 52C)

The 52P and 52C models are a single-package,
through-the-wall unit for heating and cooling hotel
rooms, offices, apartments, condominiums, and resi­dential additions. Features include:

• Improved sound quality for quiet operation

• Exceeds ARI (Air Conditioning and Refrigeration
Institute) efficiency requirements with exceptional
energy efficiency ratios (EERs)

• Easy access, lifetime filters

• User friendly controls

• Easytoreaddials

• Enhanced temperature and humidity control

• Improved condensate removal system

• Multi-room structure design

• Fixed wall sleeve, slide-out chassis

• Attractive, durable cabinet featuring new design

• Chassis that easily retrofits to most major competi­tors’ sleeves without use of retrofit kit

• Low operating costs

• No bulky duct system

• No seasonal changeover

QUIET OPERATION

Occupants and neighbors are protected against noise
intrusion. Indoor sound reduction is achieved because
of the unit’s design and its louvered front cover, indoor
scroll and blower, and heavy gage unit partition.
Rotary compressors provide quiet, reliable operation.
The indoor scroll provides a more uniform air
discharge.

The new aerodynamic split condenser shroud design
improves airflow and reduces outdoor noise, providing
a more relaxing outdoor environment. The new split
design allows for easy access to the outdoor coil to
facilitate routine cleaning of the coil. The propeller-type
fan design allows for efficient low-speed operation.

MOST EFFICIENT
PERFORMANCE

High EERs provide excellent operating economy. The
system operates without bulky ductwork, separate
equipment room, and complex match-up of different
components. Heating and Cooling modes are available
without seasonal changeover.

EFFICIENT FAN MOTOR

An efficient, totally enclosed PSC (permanent split
capacitor) fan motor provides a choice of high or low
speeds for heating and cooling. A fan-only setting
provides air circulation. Thefanmotorrequiresno
maintenance and no lubrication.

6

NO-RUST WEATHER LAST™
WALL SLEEVE AND FRONT
PA NEL

The indoor front panel and polymer wall sleeve use
nonmetallic compounds that never rust or corrode, do
not support combustion, and do not give off toxic
fumes. The weather-resistant feature exceeds require­ments of Underwriters’ Laboratories and resists dam­age caused by impact and scratching. The Weather
Last feature also insulates and has up to 10 times the
acoustic absorption of metal cabinets.

Insulated polymer wall sleeves combine all of the
above features with factory-installed insulation. The
insulation helps to reduce heat loss, save energy, pro­vide better sound absorption, and reduce the risk of
sleeve sweating.

Carrier’s metal wall sleeves are available in a variety
of sizes for most standard and deep wall applications.
All metal wall sleeves come with factory-installed
insulation, designed to minimize heat loss and reduce
outdoor noise transmissions into the room.

Standard Wall Sleeve (Polymer)

42 in.

16 in.

14/18/24/26/28 in.

REMOVABLE FRONT PANEL

The louvered front panel fits firmly onto the chassis
and features easy removal for service. It provides front
air intake to enhance performance and quiet operation.
It also allows the option of flush mounting PTAC unit
to the floor. If desired, the front panel can be

secured to the unit with field-supplied screws.

2 locking screws (if installed) are located behind the
removable filter handles.

The

ANTI-THEFT KNOBS

The anti-theft knobs are captured underneath the front
panel of the unit to prevent the knobs from being
removed or stolen.

Standard and Deep Wall Sleeve (Metal)

REMOVABLE
FILTER

LOCATION OF
REMOVED FILTER

LOCKING SCREW
(NOTE: 2nd LOCKING SCREW
IS LOCATED BEHIND
2nd FILTER)

Removable Front Panel

LO

HEAT

MODE

OFF

LO

HI

HI

COOL

FAN

TEMPERATURE

WARMER

COOLER

Anti-Theft Knobs

7

PRODUCT FEATURES AND BENEFITS (cont)

TWO-PIECE LIFETIME
INDOOR FILTER

New two-piece removable filters easily slide in and
out from the front of the PTAC unit and are inter­changeable. The front panel does not need to be
removed to access or change the filters. The filters are
washable and permanent.

Two-Piece Indoor Filter

WASHABLE VENT AIR FILTER

The unique vent system is activated by a two-position
control. Fresh outside air is redirected by the vent door
to an inside low-pressure area. A molded plastic filter
prevents dirt and debris from entering the room side of
the unit. The vent mechanism is made from noncorro­sive material ensuring reliable operation. A magnet on
the door and high-pressure airflow create a tight, draft­free seal when the vent door is closed.

Theventwillprovide50cfmoffreshair.

NOTE: If more fresh air cfm is required, a Power-Vent
Kit is available (see accessories).

BI-DIRECTIONAL
DISCHARGE GRILLE

The discharge grille is constructed of durable polycar­bonate and is reversible. Air flows upward at a
40 degree angle to the floor but can easily be adjusted
to an 80 degree angle to the floor.

40 DEGREE
AIR FLOW

Outdoor Vent Filter Location

80 DEGREE
AIR FLOW

Reversible Polycarbonate Discharge Grille

8

POWER CORD FOR 265-V
UNITS

A power cord is included for 265-v units. The power
cord is 18 in. long (cord extends 15 in. from bottom of
front panel) and per UL and National Electrical codes
must plug into an electrical subbase.

POWER CORD PROTECTION
FOR 230/208-V UNITS

The power cord for the 230/208-v unit provides power
cord protection by automatically disconnecting power
during an unsafe condition. Power can be restored by
pressing the RESET button.

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265-V Unit with Power Cord

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BI-MOLDED CONDENSER
SHROUD

The bi-molded condenser shroud provides easy access
for service and maintenance of the condenser coil and
related components.

SNOW BAFFLE

The snow baffle is provided to keep snow from blow­ing into the intake and landing on the internal compo­nents of the PTAC unit. Melted snow can form ice on
moving parts and cause damage to the unit.

30 Amp In-line 15/20 Amp Power

Power Cord Cord Plug Head

BI-MOLDED
CONDENSER
SHROUD

Bi-Molded Condenser Shroud

SNOW
BAFFLE

Snow Baffle

9

PRODUCT FEATURES AND BENEFITS (cont)

EASY ACCESS TO CHASSIS

Access to the chassis simply requires removing four
screwsandthenslidingthechassisoutofthesleeve
for service.

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CHASSIS ATTACHMENT SCREWS
(SAME LOCATION ON OPPOSITE SIDE)

PLUG TEST/
RESET BUTTONS

Easy Service Access

HIDDEN CONTROLS

The factory-wired control box houses all control com­ponents and is quickly accessible without removing
the chassis from the wall sleeve. By simply removing
two screws on control box, the hinged door lowers,
providing quick access to all the electrical compo­nents. The wiring diagram is located on the front of the
control box door.

Temperature Limiter and Control
Knob

The limiter reduces operating costs by allowing the
owner to control the range of cooling and heating tem­peratures available to the occupant. It is located under
the front panel on control box, out of the occupant’s
sight. Each setting on the limiter is equivalent to 5° F
and the range of temperature settings available to the
owner is from 60 to 90 F. The limiter is not pre-set at
the factory (providing full range for the occupant).

Fan Cycle Switch

The fan cycle switch allows the fan to operate in
2modes:

• Continuous — This setting allows the fan to run
continuously, circulating air even when the temper­ature setting has been satisfied. This setting, which
helps to keep the room temperature closer to the
thermostat setting, is used for maximum comfort.

• Cycle — This setting allows the fan to cycle on and
off with the compressor during heating or cooling.
The fan stops when the temperature setting is
reached. The longer unit off-time makes this option
more energy-efficient with only slightly wider vari­ations in room temperature.

NOTE: On wall thermostat models, the fan cycle/
continuous feature is typically located at the wall
thermostat.

Outdoor Air Vent Control

Control of the outdoor-air vent is handled by a vent
handle located under the front panel on the left side of
the unit. This handle rotates to manually open and
close the outdoor vent.

Theventwillprovide50cfmoffreshair.

NOTE: If more fresh air cfm is required, a Power-Vent
Kit is available (see accessories).

10

ENHANCED COPPER TUBING

Enhanced copper tubing is more efficient and durable
and can be repaired in the field, if required.

Because copper is a very stable metal, it is durable and
resists corrosion. Enhanced copper tubing increases:

• heat transfer capability

• the efficiency of the cooling and heating processes

• thermal conductivity (by creating additional tube
surface and turbulent refrigerant gas flow)

Every Carrier PTAC coil undergoes thorough leak test­ing and pressure testing up to 350 lb per square inch.

SEAMLESS BASEPAN

Seamless drawn basepan walls add protection against
water accumulation resulting from storm-driven rain
with heavy wind.

Carrier’s deep basepan holds up to 1
water without spilling. Closed cell foam insulators are
located between the basepan and coils, keeping coils
from direct contact with the basepan and providing
additional protection against corrosion.

1

/2gallons of

Enhanced Copper Tubing

CONDENSATE DRAIN VALVE

The temperature-activated drain valve opens when the
outdoor temperature drops below 45 F to prevent
water from freezing in the basepan.

CONDENSATE REMOVAL
SYSTEM

Carrier’s 52P and 52C Series units have an improved
condensate (water) disposal system. In addition to
slinger ring technology, Carrier has developed and pat­ented a Condensate Suction Port. The suction port,
alongwiththeslingerring,drawsinwaterwhichis
sprayed up onto the outdoor coil. The water then evap­orates, thus providing better disposal of excess con­densate, improving unit efficiency.

NOTE: If it is necessary to remove 100% of the con­densate, the Carrier Drain Kit (Part No.: DRAIN-KIT­4PK) is recommended.

SLINGER
RING

Condensate Drain Valve Prevents

Water from Freezing in Basepan

CONDENSATE
SUCTION PORT

CONDENSER SECTION

Condensate Disposal System

11

PRODUCT FEATURES AND BENEFITS (cont)

HEAT PUMPS PAY THEIR
OWN WAY

Heat pump models are available at a nominal addi­tional cost. In many locales, the payback is realized in
just a few months. Cost and payback details are pro­vided on the next page.

Special Features

Two-Stage Indoor Thermostat:

The indoor thermostat senses the indoor temperature
and automatically turns on the electric heat to warm
the room quickly. After the desired temperature condi­tions have been satisfied, the thermostat automatically
switches to heat pump mode. If compressor failure
occurs, the thermostat will provide backup electric
heat automatically.

Outdoor Thermostat:

During the heating cycle, the outdoor thermostat
senses outdoor coil temperature. It switches the unit to
electric heat mode when the outdoor coil temperature
is 20 F or below (approximately 35 F outdoor-air tem­perature). The thermostat switches the unit back to
heat pump mode when the outdoor coil temperature
rises above 40 F, which is enough to provide heat
to meet demand. The entire operation is completely
automatic.

How The Heat Pump Works

In Hot Weather:

Carrier’s PTAC units provide indoor comfort in the
same manner as conventional air conditioners, remov­ing heat and humidity from indoor air. The heat and
humidity is released to the outdoors. Carrier’s high­efficiency design saves energy and reduces cooling
costs.

Reversing Valve:

The reversing valve provides quiet refrigerant flow
after the unit shuts off. The valve controls the direction
of refrigerant flow for both heating and cooling func­tions and remains energized as long as the controls are
in the heat position. When the cooling controls are
activated, the valve automatically reverses to the cool­ing position.

Manual Compressor Override Switch:

This switch completely locks out the compressor. Note
that the compressor and heater do not operate at the
same time, thus conserving energy.

In Cool Weather:

When the outdoor coil temperature is above 20 F
(approximately 35 F outdoor-air temperature), the
heat pump draws heat from outdoor air and uses it to
heat indoor air. Since heat is transferred and not pro­duced, Carrier’s heat pump uses less electricity and
reduces energy costs significantly.

In Sub-Freezing Weather:

When the outdoor coil temperature falls below 20 F
(approximately 35 F outdoor-air temperature), the
unit automatically switches on a built-in electric
heater. The compressor stops and a blower circulates
warm air produced by the heater. When the outdoor
coil temperature rises above 40 F, heat pump operation
resumes automatically.

12

HEAT PUMP ENERGY
SAVINGS

Heat pumps save more on operat­ing costs during the heating cycle
than heat/cool models. The table
below shows that the higher initial
cost of purchasing a heat pump is
quickly made up in lower operating
costs.

Usethemaptoidentifytheclimate
zone’s designated number. Reading
down the left-hand column of the
table, select the cost/kWh rate in
this zone that most closely approxi­mates your local rate. The approxi­mated savings and payback period
is found at the intersection of your
zone/rate line and the desired Btuh
Cooling Capacity column. Exact
savings are determined by lifestyle,
local electrical rates, and climatic
conditions.

ZONE

VI

V

ZONE V

ZONE IV

ZONE III

II

ZONE II

ZONE I

CARRIER HEAT PUMP INITIAL COST VERSUS SAVINGS OVER HEAT/COOL MODELS

7000 BTUH

COOLING

CAPACITY

Annual

Savings*

I

II

III

IV

V

VI

LEGEND

ELECTRIC

COST/kWH

$.06 $ 34.26 21 $ 43.08 21 $ 58.20 19 $ 68.34 19
$.08 $ 45.68 16 $ 57.44 16 $ 77.60 14 $ 91.12 14
$.10 $ 57.10 13 $ 71.80 13 $ 97.00 11 $113.90 12

$.06 $ 57.12 13 $ 71.76 13 $ 96.96 11 $113.64 12
$.08 $ 76.16 9 $ 95.68 9 $129.28 8 $151.52 9
$.10 $ 95.20 8 $119.60 8 $161.60 7 $189.40 7

$.06 $ 58.02 12 $ 72.84 12 $ 98.40 11 $115.38 11
$.08 $ 77.36 9 $ 97.12 9 $131.20 8 $153.84 9
$.10 $ 96.70 7 $121.40 7 $164.00 7 $192.30 7

$.06 $ 82.02 9 $103.02 9 $139.14 8 $163.14 8
$.08 $109.36 7 $137.36 7 $185.52 6 $217.52 6
$.10 $136.70 5 $171.70 5 $231.90 5 $271.90 5
$.12 $164.04 4 $206.04 4 $278.28 4 $326.28 4
$.14 $191.38 4 $240.38 4 $324.66 3 $380.66 3
$.16 $218.72 3 $274.72 3 $371.04 3 $435.04 3

$.06 $ 57.36 13 $ 71.94 13 $ 97.26 11 $113.94 12
$.08 $ 76.48 9 $ 95.92 9 $129.68 8 $151.92 9
$.10 $ 95.60 8 $119.90 8 $162.10 7 $189.90 7
$.12 $114.72 6 $143.88 6 $194.52 6 $227.88 6
$.14 $133.84 5 $167.86 5 $272.33 4 $265.86 5

$.06 $ 93.72 8 $117.66 8 $159.00 7 $186.48 7
$.08 $124.96 6 $156.88 6 $212.00 5 $248.64 5
$.10 $156.20 5 $196.10 5 $265.00 4 $310.80 4
$.12 $187.44 4 $235.32 4 $318.00 3 $372.96 4

ZONE

kWH — Kilowatt Hour

*Computer projections based on full cooling load at 95° F. Sav-

ings projected for 230 v ratings.

1

Heating load is 5,000 Btuh at winter design point temperature.

2

Heating load is 10,000 Btuh at winter design point temperature.

3

Heating load is 15,000 Btuh at winter design point temperature.

1

PREMIUM

Payback

in Months

$60

9000 BTUH

COOLING

CAPACITY

Annual

Savings*

2

PREMIUM

Payback

in Months

$75

12000 BTUH

COOLING

CAPACITY

Annual

Savings*

2

PREMIUM

Payback

in Months

$90

15000 BTUH

COOLING

CAPACITY

Annual

Savings*

3

PREMIUM

Payback

in Months

$110

For precise energy savings in your geographical location, go to www.lodgingAC.com to
use Carrier’s energy calculator.

13

ORDERING DATA (52P AND 52C)

For immediate assistance, call 1-800-827-7435 or contact
your local Carrier dealer.

Standard Unit

• Chassis with front panel

• Electro-mechanical controls

• Cord-connected chassis for 230/208-v and 265-v
units

Lead-time: Many models are in stock for immediate
delivery; call for lead-times.

Y)

EXTERIOR
GRILLE
(ACCESSORY)

FRONT
PANEL
(STANDARD)

PRODUCT CATALOG
NUMBER

TESTING

1.PR
E
S

2

S

.P

R

L

E

U

SE

G

T

IN

RE

B

T

U

O

CE

TT

PO

3.PR
P

O

T

W

N.

A

E

C

E

R

LE

S

S

.

S

T

HO

E
ST

U

4

L

B

.P

D

U

R

T

LIG

T

ES

O

HT

N

S

F

.

U

R

O

N

E

R

S

I
T

D

ET

U

O

S

N

E

B

.

O

U
T

T

T

U

O

S

N

E

A

I

S

G

A

T
E

IN

S
T

A
B

O
V
E

F

A
I
L

S

PLUG TEST/
RESET BUTTONS

CHASSIS
(STANDARD)

Standard 52P or 52C Unit

WALL SLEEVE
(ACCESSOR

14

FACTORY-INSTALLED OPTIONS (52P AND 52C)

WALL THERMOSTAT
CONTROL (RC,RP)

Carrier’s wall thermostat control option includes:

• a standard chassis with front panel

• factory-installed low voltage controls for remote
thermostat operation

• indoor coil freeze protection

• user accessible selector switch for high or low fan
speed

Wall thermostat and wall thermostat wire must be
ordered separately.

See page 50 for a diagram of multiple PTAC units con­trolled by a single thermostat.

NOTE: Be sure to connect reversing valve wiring to
the O connection of the thermostat for heat pump
applications.

NOTE: Do not use a power stealing digital thermostat
(common must be connected for digital thermostats).

CORROSION PROTECTION

FA

N

S

P

E

E

D

L
O

H
I

C

o

m

fo

r

t

W

A
L

L

T

H

E

R
M

O

S

T
A

T

C

O

M
F

O

R

T

(CP,RP)

To protect against the corrosive effects of a seacoast
environment, this option includes:

• a standard chassis with front panel

• special protections consisting of:
— painted control box and unit partitions

— pre-coated aluminum coils with copper tubing
— stainless steel tube sheets (outdoor coil)
— totally enclosed fan motor with moisture-

resistant windings

NOTE: All installations within one mile of the sea
coast or other corrosive environment must use Corro­sion Protection (CP).

15

FIELD-INSTALLED ACCESSORIES (52P AND 52C)

WALL SLEEVES

Weather Last™ Wall Sleeve

For the best performance and longest life, Carrier
recommends genuine Carrier wall sleeves for all
installations.

All Carrier wall sleeves are built with a pitch of 1/4 in.
per foot; for self-pitching of the unit, the wall sleeve
must be installed level (any error should be pitched to
the outside). Overflow slots on the outside of the
sleeve are in place to divert excess water during severe
weather.

Important Sleeve Installation Considerations:

• All Carrier's sleeves are self pitching and must be
mounted level in all directions. (Do not use rails
to level sleeve.)

• The sleeve should be caulked on all sides, includ­ing both inside and outside the building.

• If more than 4 in. of wall sleeve projects into the
room, an accessory subbase must be used for
support.

• For all applications with an accessory subbase,
wall sleeve must extend 3
room and must be 31/4in. minimum to 51/2in.
maximum above floor (including carpeting) to
allow for proper fit of subbase.

• For applications where the wall sleeve is
mounted flush to the exterior of the building
(or recessed in), Carrier recommends a field­supplied drip edge be installed to prevent water
infiltration into the building.

• Insulated wall sleeves should be considered for
superior sound absorption, to reduce heat loss
and to prevent sleeve sweating, a condition that
can occur when the outside temperature is cold
and the indoor conditions are warm and humid.

1

/4in. minimum into

The sleeve's alpine mist color (a shade of beige)
closely matches the front panel and blends in well with
any inside or outside decor.

The polymer wall sleeve comes in both insulated (fac­tory installed) or non-insulated, to meet the require­ments of every application.

Insulated Polymer Wall Sleeve

Part No.: SLEEVE-INSUL-1PK
Carrier’s accessory insulated polymer wall sleeve, with

factory-installed insulation, provides superior sound
absorption, reduces heat loss and prevents sleeve
sweating, a condition that can occur when the outside
temperature is cold and the indoor conditions are warm
and humid.

IMPORTANT: Insulated Polymer Wall sleeve pro­vides superior sound absorption, reduces heat loss
and prevents sleeve sweating.

Corrosion-Protected Polymer Sleeve

Non-Insulated Polymer Wall

Polymer Wall Sleeves

Choose a polymer wall sleeve for maximum protec­tion and appearance.

All Carrier’s polymer wall sleeves are made from a
molded polymer that is designed for strength and dura­bility. This material has excellent corrosion resistance
and a flammability rating of UL94-5V.

The sleeve surface is textured to prevent shine and
hide scratches. The rib configuration on the sleeve bot­tom, allows easy chassis removal and aids in drainage.
The locating holes in the side and top panels, allow
easy fastening of the sleeve to wall openings. Refer to
dimension drawings (pages 28 and 29) for typical wall
installation and dimensions.

Sleeve

Part No.: WALL-SLEEVE-1PK
Part No.: WALL-SLEEVE-9PK
Carrier’s accessory non-insulated polymer wall sleeve,

provides a superior appearance and protection for
many applications.

For applications where weather conditions could
influence sleeve sweating, a condition that can occur
when the outside temperature is cold and the indoor
conditions are warm and humid, the Insulated Poly­mer Wall sleeve should be considered.

16

Insulated Metal Wall Sleeves

42 IN.

Part No.: SLEEVE-STEEL-1PK
Part No.: SLEEVE-EXT18-1PK
Part No.: SLEEVE-EXT24-1PK
Part No.: SLEEVE-EXT26-1PK
Part No.: SLEEVE-EXT28-1PK

Carrier's metal wall sleeves are available in a variety
of sizes for most applications and difficult installa­tions. Choose from 14 in., 18 in., 24 in., 26 in., or
28 in. standard depth sizes. All metal wall sleeves
come with factory-installed insulation, designed to
minimize heat loss, reduce outdoor noise transmis­sions into the room and prevent sleeve sweating. In
addition, the metal wall sleeve provides a flammability
rating higher than UL94-5V.

Wall Sleeve Molding Kit

Part No.: SLEEVE-MOLDING
For a superior look and to hide any construction

imperfections, use Carrier's wall sleeve molding kit to
trim the wall sleeve to the wall. The molding kit is a
perfect solution and can be used with any Carrier wall
sleeve (matches Carrier wall sleeve color).

16 IN.

14/18/24/26/28 IN.

Standard and Extended Metal Wall Sleeve

1 IN.

1/2 IN.

Friedrich (and ZoneAire) Retro­fit Wall Sleeve Adapter

Part No.: FR-SLEEVE-EXT
The Friedrich (and ZoneAire) wall sleeve adapter is

constructed of sheet metal and is designed to increase
the depth of an existing Friedrich T-series or ZoneAire
wall sleeve to accommodate Carrier’s industry stan­dard PTAC units.

Climate Master Wall Sleeve
Adapter

Part No.: CM-SLEEVE-EXT
The Climate Master wall sleeve adapter is constructed

of sheet metal and is designed to increase the depth of
an existing Climate Master 12
accommodate Carrier’s industry standard PTAC units.

1

/2in. wall sleeve to

Wall Sleeve Molding Kit

16 IN.

42 IN.

3IN.

Friedrich Wall Sleeve Adapter Kit

16 IN.

42 IN.

17

1 1/2 IN.

Climate Master Wall Sleeve Adapter Kit