Carrier 13 50XP User Manual

PERFORMANCE™ 13 50XP
SINGLE-PACKAGED ELECTRIC COOLING UNITS

WITH PURON® (R-410A) REFRIGERANT

2 to 5 Nominal Tons

Product Data

Single-Packaged Products with
Energy-Saving Features and Puron®
refrigerant.

• Low Sound Levels

• 13 SEER

• Variable Speed Blower-Standard

• Factory Installed TXV

Features/Benefits

One-piece cooling unit with optional
electric heater, low installation cost,
dependable performance and easy
maintenance.

Efficient operation

High-efficiency design with a SEER

(Seasonal Energy Efficiency Ratio)
of 13.0.

Puron® Environmentally Sound

UNIT 50XP

Refrigerant

refrigerant designed to help protect the
environment. Puron is an HFC
refrigerant which does not contain
chlorine that can harm the ozone layer.
The most important advantage of
Puron refrigerant is that it has not been
banned in future air conditioning
systems as the traditional refrigerant
R-22 has been. Puron refrigerant is in
service in thousands of systems
proving highly reliable,
environmentally sound performance.

IdealHumidity™ Technology
featuring Thermidistat control and
Variable Speed Blower motor

provides greater comfort, humidity
control, and energy efficiency. You can
expect up to 30 times better
dehumidification; economical constant
fan for less than $50 a year, which
provides improved indoor air quality
and more even temperatures from room
to room; and reduced indoor noise due
to lower air velocity. In addition, you’ll
realize improved installation flexibility
with 3 different airflow choices for best
overall comfort.

is Carrier’s unique

that

Easy Installation

Factory-assembled package is a

compact, fully self-contained, electric

cooling unit that is pre-wired, pre­piped, and pre-charged for minimum
installation expense. 50XP units are
available in a variety of standard
cooling sizes with voltage options to
meet residential and light commercial
requirements. Units are light weight,
and install easily on a rooftop or at
ground-level. The hightech, composite
base pan eliminates rust problems
associated with ground level
applications.

Durable, dependable
components

Scroll Compressors are designed for

50XP

high efficiency. Each compressor is
hermetically sealed against
contamination to help promote longer
life and dependable operation.
Vibration isolation provides quiet
operation. Compressors have internal
high-pressure and overcurrent
protection.

Convertible duct configuration

Unit is designed for easy use in either
downflow or horizontal applications.
Each unit is easily converted from
horizontal to downflow.

Direct-drive variable speed blower
motor

is standard on all 50XP models.

Direct-drive, PSC condenser-fan
motors

energy consumption and provide for
cooling operation down to 55°F outdoor
temperature. Motormaster® II low
ambient kit is available as a field­installed accessory.

Corporate thermostats include the

Time Guard® II anti-short cycle
protection circuitry. If a non-Corporate
thermostat without anti-short cycle

are designed to help reduce

protection, is used the Time Guard II
field installed anti-short cycle kit is
recommended.

Refrigerant system is designed to

provide dependability. Liquid refrigerant
filter driers are used to promote clean,
unrestricted operation. Each unit leaves
the factory with a full Puron® refrigerant
charge. Refrigerant service connections
are standard on the suction and discharge
lines for checking operating pressures.

Thermostatic Expansion Valve – A

hard shutoff, balance port TXV
maintains a constant superheat at the
evaporator exit (cooling cycle) resulting
in higher overall system efficiency.

Evaporator and condenser coils are

computer-designed for optimum heat
transfer and cooling efficiency. The
evaporator coil is fabricated from
copper tube and aluminum fins and is
located inside the unit for protection
against damage. The condenser coil is
internally mounted on the top tier of the
unit. Copper fin coils and pre-coated fin
coils are available from the factory by
special order. These coils are
recommended in applications where
aluminum fins are likely to be damaged
due to corrosion. They are ideal for
seacoast applications.

High and Low Pressure Switches give

added safety and reliability to the
compressor.

Low sound ratings ensure a quiet

indoor and outdoor environment with
sound ratings as low as 72 dB.
(See page 3.)

Easy to service cabinets provide easy

single-panel accessibility to serviceable

components during maintenance and
installation. The basepan with
integrated drain pan provides easy
ground level installation with or without
a mounting pad. Convenient handholds
are provided to manipulate the unit on
the jobsite. A nesting feature ensures a
positive basepan to roof curb seal when
the unit is roof mounted. A convenient
3/4-in. wide perimeter flange makes
frame mounting on a rooftop easy.

Louvered Grille provides hail and

vandalism protection for the coil.

Downflow operation is easily provided

in the field to allow vertical ductwork
connections. The basepan utilizes
knockout style seals on the bottom
openings to ensure a positive seal in the
horizontal airflow mode.

Cabinets are constructed of heavy-

duty, phosphated, zinc-coated
prepainted steel capable of
withstanding 500 hours of salt spray.
Interior surfaces of the evaporator and
electric heater compartments are
insulated with cleanable semi-rigid
insulation board, which keeps the
conditioned air from being affected by
the outdoor ambient temperature and
provides improved indoor air quality.
(Conforms to American Society of
Heating, Refrigeration and Air
Conditioning Engineers No. 62P.) The
sloped drain pan minimizes standing
water in the drain, which is provided
with an external drain.

Standard metal duct covers with

insulation come with the unit and cover
the horizontal duct openings. These can
be left in place if the unit is converted to
downflow.

Table of contents

Page

Features/Benefits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1,2

Model Number Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

ARI Capacities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Options and Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5,6

Base Unit Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7,8

Accessory Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Selection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-15

Typical Piping and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Application Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Electrical Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18, 19

Typical Wiring Schematics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20, 21

Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Guide Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23, 24

2

AD

BT

XT

CC

AC

CC

CU

TP

TV

TC

AL

CU

5

Model number nomenclature

— Aluminum
— Copper

Model Number
50XP – Single

Packaged-Electric
Cooling

Nominal Cooling Capacity
024 – 2 ton
030 – 2.5 ton
036 – 3 ton
042 – 3.5 ton
048 – 4 ton
060 – 5 ton

V-Ph-Hz
3 – 208/230-1-60

– 208/230-3-60

50XP 024 3

—

Options

BT – AL evap, vinyl condens

– AL evap, CU condens

Options

– CU evap & condens

(None) – Wire Grille

– Base unit with tin plated indoor coil

– Louvered Grille

hairpins

– Wire Grille and Vinyl-Coated Condenser

– TP with vinyl coating on outdoor coil

Coil Fin

– TP with AL indoor coil & CU/CU out-

– Louvered Grille and Vinyl-Coated Con-

door coil

denser Coil Fin

– Wire Grille, AL Evaporator and CU/CU

Only used if ordering an option

Condenser Coil

– Louvered Grille, AL Evaporator and CU/

CU con

50XP

ARI* capacities

COOLING CAPACITIES AND EFFICIENCIES

UNIT
50XP

024 2 800 24,000 11.0 13.0 72
030 2-1/2 1000 28,800 11.0 13.0 72
036 3 1100 36,000 11.0 13.0 72
042 3-1/2 1400 41,000 11.0 13.0 72
048 4 1450 45,000 11.0 13.0 78
060 5 1710 57,000 11.0 13.0 78

LEGEND

dB — Sound Levels (decibels)
db — Dry Bulb
SEER — Seasonal Energy Efficiency Ratio
wb — Wet Bulb

* Air Conditioning & Refrigeration Institute.

** “A” Conditions- 80°F indoor db/67°F indoor wb & 95°F outdoor db.

† Rated in accordance with U.S. Government DOE Department of

Energy) test procedures and/or ARI Standard 210/240-94.

NOMINAL

TONS

STANDARD

CFM

NET COOLING

CAPACITIES

(Btuh)

‡ Tested in accordance with ARI Standard 270-95 (not listed in ARI).

NOTES:

1. Ratings are net values, reflecting the effects of circulating fan heat.
Ratings are based on:
Cooling Standard: 80°F db, 67°F wb indoor entering-air tempera­ture and 95°F db outdoor entering-air temperature.

2. Before purchasing this appliance, read important energy cost and
efficiency information available from your retailer.

EER@A** SEER†

SOUND

RATINGS‡

(dB)

3

OUTDOOR SOUND: OCTAVE BAND DATA—DECIBELS (Lw(A))

MODEL NO. 50XP

Frequency (Hz) 024 030 036 042 048 060

125
250

500
1000
2000
4000
8000

Physical data

50XP

50XP

58.8 58.8 60.7 56.7 62.4 63.5

63.5 63.5 63.3 62.8 69.9 67.6

67.2 67.2 66.8 67.8 71.3 71.8

66.9 66.9 66.5 67.4 73.4 75.5

63.7 63.7 64.2 63.7 70.0 71.0

58.3 58.3 60.3 57.7 66.3 68.1

50.0 50.0 53.0 50.8 60.1 59.9

UNIT SIZE 50XP 024 030 036 042 048 060
NOMINAL CAPACITY (ton)
OPERATING WEIGHT (lb)
COMPRESSOR

2 2-1/2 3 3-1/2 4 5

343 343 366 433 456 492

Scroll

REFRIGERANT (R-410A)

Quantity (lb)

7.3 8.0 9.5 10.7 11.25 13.2

REFRIGERANT METERING DEVICE

(Indoor)

CONDENSER COIL

Rows—Fins/in.
Face Area (sq ft)

CONDENSER FAN

Nominal Cfm
Diameter (in.)
Motor Hp (Rpm)

EVAPORATOR COIL

Rows—Fins/in.
Face Area (sq ft)

EVAPORATOR BLOWER

Nominal Airflow (Cfm)
Size (in.)
Motor (Hp)

HIGH-PRESSURE SWITCH (psig)

Cutout
Reset (Auto.)

TXV TXV TXV TXV TXV TXV

2—21

11.95

2350

22

1/8 (825)

3—15

3.7

800

10 x 10

1/2

2—21

12.0

2700

22

1/8 (825)

3—15

3.7

1000

10 x 10

1/2

2—21

13.6

2350

22

1/8 (825)

4—15

3.7

1100

11 x 10

3/4

610 ± 15
420 ± 25

LOSS-OF-CHARGE/LOW-PRESSURE
SWITCH

(Liquid Line) (psig)
Cutout

20 ± 5

45 ± 10

Reset (Auto.)

RETURN-AIR FILTERS (in.)*

Throwaway

20 x 20 x 1 20 x 20 x 1 20 x 24 x 1 24 x 30 x 1 24 x 30 x 1 24 x 30 x 1

* Required filter sizes shown are based on the larger of the ARI (Air Conditioning & Refrigeration Institute) rated

cooling airflow or the heating airflow velocity of 300 ft/min for throwaway type or 450 ft/min for high-capacity
type. Air filter pressure drop for non-standard filters must not exceed 0.08 in. wg.

2—21

15.4

2800

22

1/8 (825)

3—15

4.7

1400

11 x 10

3/4

2—21

17.4

3300

22

1/4 (1100)

4—15

4.7

1400

11 x 10

3/4

2—21

19.3

3300

22

1/4 (1100)

4—17

5.7

1750

11 x 10

1.0

T

O

D

E

A

I

R

F

I

I

T

A

R

S

E

C

R

E

R

U

T

T

I

C

N

A

U

F

U

N

A

5

2

3

2

A

M

A

R

I

C

O

A

M

I

R

C

P

O

Y

R

A

S

L

N

D

Y

I

T

I

N

I

O

G

N

I

N

W

G

I

T

E

T

H

T

Q

N

U

E

I

P

M

0

1

2

D

A

R

N

A

D

4

Options and accessories

Factory-installed options
Coil options

copper and vinyl-coated construction for refrigerant coils.
Units are shipped standard with copper tube/aluminum fin
construction. See model number nomenclature for coil
options.
*Tin-Plated indoor coils are built with special hairpins
that are designed to resist both general pitting corrosion
and excessive indoor corrosion (Formicary Corrosion).

Field-installed accessories

Economizer with Solid-State Controls and Barometric
Relief Dampers
Manual Air Damper (25% open)
Electric Heaters
Filter Rack
Flat Roof Curbs (8-in. and 14-in.)
Square-to-Round Duct Transition Kit
Thermidistat™
Thermostats
Crankcase Heater
Rigging Kit
Low Ambient Kit (Motormaster® II Control)
Solid-State Time Guard® II Device
Lifting Kit
Compressor Hard Start Kit

Economizer with solid-state controls and barometric
relief dampers

during cooling and reduce compressor operation.

Manual outside air damper includes hood and filter rack

with adjustable damper blade for up to 25% outdoor air.

Electric heaters provide heat in the unit when required.

Each package has a heater module that slides into the
controls compartment. Heater sizes range from 5 to 20 kW.
The electric heater design allows the use of a single-point

include Tin-Plated* indoor hairpins, copper/

includes filter racks and provide outdoor air

power supply for the entire unit, resulting in lower installed
costs.

Flat roof curbs in both 8 in. and 14 in. sizes are available

for roof mounted applications.

Square-to-round duct transition kit enables 024-048 size

units to be fitted to 14 in. round ductwork.

Thermidistat Control coupled with the system’s variable

speed indoor blower delivers Carrier’s patented
IdealHumidity™ Technology that allows for even greater
humidity control. Along with more precisely controlling
temperature and humidity, the Thermidistat offers full
seven-day programmability allowing you to further
customize your comfort and energy savings.

Thermostats provide control for the system heating and

cooling functions. Thermostat models are available in both
programmable and non-programmable versions.

Lifting kit, including 4 metal brackets that are available to

assist in lifting this product onto a roof application.

Crankcase heater provides anti-floodback protection for

low-load cooling applications.

Low-ambient kit (Motormaster II control) allows the

use of mechanical cooling down to outdoor temperatures as
low as 0°F.

Solid-state Time Guard II device provides short-cycling

protection for the compressor. Not required with corporate
electronic thermostats.

Filter rack features easy installation, serviceability, and

high-filtering performance for vertical or horizontal
applications.

Compressor Hard start kit assists compressor start-up by

providing additional starting torque on single phase units
and prolongs compressor motor life.

50XP

ELECTRIC HEATERS

ODS CATALOG

ORDERING NO.

CPHEATER052A00
CPHEATER069A00
CPHEATER065A00
CPHEATER051A00
CPHEATER053A00

CPHEATER055A00
CPHEATER056A00
CPHEATER057A00
CPHEATER059A00

LEGEND
ODS — Order Distribution System
NOTE: Electric heaters are rated at 240 v. Refer to Multiplication Factors table for other voltages.

NOMINAL CAPACITY

(kW)

5.0 XXXXXX

7.5 XXXXXX

10.0 X X X X X X

15.0 X X X X X

20.0 XXX

5.0 XXXXX

10.0 X X X X X

15.0 X X X X

20.0 XXX

024 030 036 042 048 060

ELECTRIC HEATERS (208/230 — SINGLE PHASE — 60 Hz)

ELECTRIC HEATERS (208/230 — 3 PHASE — 60 Hz)

USED WITH SIZES

MINIMUM AIRFLOW FOR RELIABLE ELECTRIC HEATER OPERATION

UNIT 024 030 036 042 048 060

AIRFLOW

750 750 1250 1205 1500 1800

5

50XP

50XP

ECONOMIZER

FILTER RACK MANUAL OUTSIDE AIR DAMPER

REPLACEMENT
PANEL

MANUAL OUTSIDE
AIR HOOD

DAMPER
BLADE

6

Base unit dimensions—50XP024-036

50XP

UNIT

50XP024 208/230-1-60 343 156 39.02 [991.1] 20 [508] 19.3 [489] 17.6 [447]
50XP030 208/230-1-60 343 156 39.02 [991.1] 20 [508] 19.3 [489] 17.6 [447]
50XP036 208/230-1-60, 208/230-3-60 366 166 41.02 [1041.9] 20 [508] 14 [355.6] 13 [330.2]

50XP 024-036 Dimensions

ELECTRICAL

CHARACTERISTICS

UNIT WEIGHT

lb kg X Y Z

UNIT HEIGHT

in. [mm]

“A”

CENTER OF GRAVITY

in. [mm]

7

Base unit dimensions—50XP042-060

50XP

UNIT

50XP042 208/230-1-60, 208/230-3-60 433 197 42.98 [1091.7] 21 [533.4] 20.5 [520.2] 16.6 [421.6]
50XP048 208/230-1-60, 208/230-3-60 456 207 44.98 [1142.5] 19.5 [495.3] 17.6 [447.6] 18.0 [457.2]
50XP060 208/230-1-60, 208/230-3-60 492 223 46.98 [1193.3] 21 [533.4] 20 [508] 17.6 [447.0]

ELECTRICAL

CHARACTERISTICS

UNIT WEIGHT

lb kg X Y Z

UNIT HEIGHT

in. [mm]

“A”

CENTER OF GRAVITY

in. [mm]

50XP 042-060 Dimensions

8