Carrier 50ZP042300 User Manual PACKAGE UNIT Manuals And Guides L1003132

CARRIER Package Units(both units combined) Manual L1003132 CARRIER Package Units(both units combined) Owner's Manual, CARRIER Package Units(both units combined) installation guides

User Manual: Carrier 50ZP042300 50ZP042300 CARRIER PACKAGE UNIT - Manuals and Guides View the owners manual for your CARRIER PACKAGE UNIT #50ZP042300. Home:Heating & Cooling Parts:Carrier Parts:Carrier PACKAGE UNIT Manual

Open the PDF directly: View PDF .
Page Count: 20

Download
Open PDF In Browser	View PDF

turn to the expe_

Installation Instructions
NOTE:
Read
installation.

the entire

instruction

TABLE

manual

before

starting

the

OF CONTENTS
PAGE

SAFETY

CONSIDERATIONS

General

.........................

..........................................

RECEIVING

Check Equipment

..................

5-8

..................................

Identify

Unit

Inspect

Shipment

Provide

AND INSTALLATION

....................................

Unit Support

Slab Mount

.................................

...............................

.....................................

5
C00001

Provide

Clearances

Place Unit

.................................

........................................

Select and Install Ductwork
Install Flanges
Converting
Discharge
Provide

for Ductwork

for Condensate

Power

Connecting

Control

Special

Procedures

PRE-START-UP

Power

......................

Wires

sure

..............

.......................

Operation

...............

9
10-12

SAFETY

12-14

..............................

............................

User's

thoroughly
and follow
all warnings
or cautions
included
literature and attached to the unit. Consult local building codes,

................................

the

.....................................

TO INSTALLER
INSTRUCTIONS

Follow all safety codes. Wear safety glasses, protective
clothing,
and work gloves. Use quenching
cloth for brazing
operations.
Have
a fire extinguisher
available.
Read
these
instructions

..........................

for 208-V

CHECKLIST

(Size 036 Shown)

(Vertical)

.........................

Lead to Unit Ground

TROUBLESHOOTING

Also, make
installation.

only).

....................................

MAINTENANCE

NOTE:
THESE

(50ZP060

Leads into Unit ......................

Ground

Routing

START-UP

Units to Downflow

Disposal

High Voltage Connections

START-UP

Connections

Fig. 1 - 50ZP

...........................

Horizontal Discharge
......................................

Install Electrical

Routing

- Before the installation
, READ
CAREFULLY
AND COMPLETELY.
Manual

is left with

the

unit

editions

of the National

Electrical

Code (NEC)

In Canada refer to the current
Code CSA C22.1.

editions

Recognize

This is the safety-alert

safety

information.

of the Canadian

NFPA 70.
Electrical

symbol

words are used with the safety-alert
symbol. DANGER
identifies
the most serious hazards which will result in severe personal iniury
or death. WARNING
signifies
hazards
which could result in
personal
iniury or death. CAUTION
is used to identify unsafe
practices which may result in minor personal iniury or product and
property
damage. NOTE is used to highlight
suggestions
which
will result in enhanced installation, reliability, or operation.

ELECTRICAL

Improper installation
adjustment,
alteration, service, maintenance,
or use can cause explosion,
fire, electrical
shock,
or other
conditions
which may cause death, personal injury, or property
or your
qualified

installer or agency must use factory-authorized
kits or accessories
when modifying
this product Refer to the individual
instructions
packaged with the kits or accessories when installing.

When you see this symbol on the unit and in instructions
or
manuals, be alert to the potential for personal iniury. Understand
these signal words; DANGER,
WARNING,
and CAUTION.
These

after

CONSIDERATIONS

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

current

in
the

Failure to follow
iniury or death.

SHOCK
this

HAZARD
warning

could

Before installing or servicing system,
power to system and install lockout
more than one disconnect switch.

result

in personal

always turn off main
tag.
There may be

11.57
[294.0]

16.06
[408.0]

REQUIRED

CLEARANCE

TO COMBUSTIBLE

M,_'L,

TOP OF UNIT .........................................................................................
DUCT StDE OF UNtT .............................................................................
SIDE OPPOSITE DUCTS ......................................................................
BOTTOM OF UNIT .................................................................................

INCHES [ram]
0
0
0
0

NEe,

REQUIRED
CLEARANCES,
INCHES
BETWEEN UNITS, POWER ENTRY SIDE ....................................
42.00
UNIT AND UNGROUNDED
SURFACES, POWER ENTRY SIDE ,38.00
UNtT AND BLOCK OR CONCRETE WALLS AND OTHER
GROUNDED SURFACES, POWER ENTRY SIDE ......................... 42.00
REQUIRED

\
L

REAR VIEW

14.0 DtA.
[356,0]
DUCT OPENINGS

SERVICING
INCHES [mini
30,00 [782.0]
30,00 [782.0]
48.00 [1219.2]
30.00 [782,0}

National

Electrical Code

NOTES:

[1295.0]

EVAP

AND

[1088.8]

LEGEND

50.98

FOR OPERATION

CONDENSER
COIL ACCESS SIDE ..............................................
POWER ENTRY SIDE ....................................................................
(EXCEPT FOR NEC REQUIREMENTS)
UNIT TOP .......................................................................................
SIDE OPPOSITE DUCTS ..............................................................

NED

BOTTOM

CLEARANCE

[mini
[108&8]
[914,0}

UNI

1. Clearances must be maintained to prevent recirculation of air from outdoop
fan discharge with the exception of the condenser coil (38,00 in [914.0 mm], A

removable fence or barricade requires no clearance.
2, Dimensions are in inches, Dimensions in [] are in millimeters,

COIL_

L
\\
\\\\

II
II
II

\\\\

COND
COl Lm\\

II
II

3! .99
[812.5}
BOTrO/! OF UNIT

_CG

II
II
II
II
II

\
,

BLOWER, CONTROL BOX AND EVAP
ACCESS PANEL

COIL

2.72
1',:(}!7 I) I! E S {)

21.61

ANEL_\

X\\ X
3ER_'I(:E PORTS _\
FIELD E_i_T_'!
¸ TO .,

[89.01_]

1.75 DtA,

[44.51
C_ER El,TAT=\\

_
\

[594.01
_ 0.88
DtA,

[22.21
/// _/LS,00LTA;E

N\\

EtTRY

17.80
[447.0
Z

LEFT SIDE VIEW

12o/[_
[30.6]

FRONT VIEW

1.0540

LD x .50 DEEP _

[28,772

x 12,7]

2,50

19.61
[498,1]

[83.5]

RIGHT SIDE VIEW
C00002

Fig. 2 - Base Unit Dimensions,

UNIT

ELECTRICAL

CHARACTERISTICS

50ZP024-036
UNIT
Ib

WEIGHT
kg

50ZP024

208/230

- 1-60

219

50ZP030

208/230

- 1-60

226

103

234

106

50ZP036

208/230-1-60,

208/230-3-60

CENTER
x
355.6
(14.00)
355,6
(14.00)
355,6
(14.00)

OF GRAVITY
Y
508.0
(20.00)
508,0
(20.00)
508,0
(20.00)

IN, (MM)
z
241.3
(9.50)
241.3
(9.50)
241.3
(9.50)

1!.57
[294.0]

16.06
[408.0]

REQUIRED

CLEARANCE
TO COMBUSTIBLE
M,,,,,,,,,,,,,,,,,,_¢L
INCHES [mini
TOP OF UNIT .........................................................................................
0
DUCT SIDE OF UNIT .............................................................................
0
SIDE OPPOSITE DUCTS ......................................................................
0
BOTTOM OF UNIT .................................................................................
0
NEe,

REQUIRED

CLEARANCES,

_NCHES
UNITS
POWER
ENTRY
SIDE ....................................
42.00
UNGROUNDED
SURFACES,
POWER
ENTRY
SIDE .36.00
BLOCK
OR CONCRETE
WALLS
AND OTHER
SURFACES,
POWER
ENTRY
SIDE .........................
42.00

BETWEEN
UNIT AND
UNIT AND
GROUNDED
REQUIRED

CLEARANCE

FOR

OPERATION

AND

[1068.8]

SERVICING
INCHES

CONDENSER
COIL ACCESS
SIDE ..............................................
POWER
ENTRY
SDE ....................................................................
(EXCEPT
FOR NEC REQUIREMENTS)
UNIT TOP .......................................................................................
SIDE OPPOSITE
DUCTS
..............................................................

9.75

[mini
[1086.8]
[914.0]

[mini
30.00

30.00

[782.0]

48,00
30.00

[1219.2]
[782.0]

[762.0]

LEGEND

o
\, 14.0

NEC

DIA.

[356.01
DUCT OPENINGS

REAR VIEW

National

Electrical

Code

NOTES:
1.

Clearances

must

be maintained

to prevent

recircu}ation

fan discharge
with the exception
of the condenser
removable
fence
or barricade
requires
no clearance.
2.

Dimensions

are in inches.

Dimensions

in [ ] are

of air from

coi_ (38.00

outdoor-

in [914.0

mini.

in millimeters.

50.98
[! 295.0]
BOTTOM

UNIT

EVAPORATOR
COIL

CONDENSER _
COIL

y _

[8!2.5]
BOTTOMOF UNIF

BLOWER, CONTROL BOX AND
EVAPORATOR COIL ACCESS PANEL

2.72

2! .6!
[549.0]

....
,, 1.75DIA.
[44.5]

1.2_
[30.6]

LEFT SiDE VIEW

FRONT VIEW

1.0540 I.D. x .50 DEEP

! 9.61
[498. !]

2.50
[63.5]

RIGHT SIDE VIEW

[26.772 x 12.7]

C00003

Fig. 3 - Base []nit

UNIT

ELECTRICAL

CHARACTERISTICS

Dimensions,

50ZP042,
UNIT

048

WEIGHT

50ZP042

208/230-1-60,

208/230-3-60

297

135

50ZP048

208/230-1-60,

208/230-3-60

308

140

CENTER
X
355.6
(14.00)
355.6

(14.00)

OI = GRAVITY
Y
508.0
(20.00)
508.0

(20.00)

IN. (MM)
Z
304.8
(12.00)
304.8

(12.00)

DIMENSIONS

IN []ARE

IN mm
13.89

REQUIRED

[352.7]
4.63

_._

13.89

[117.6]

_2.11

[352.8]

CLEARANCE

COMBUSTIBLE

Mfi[L.

TOP OF UNIT .........................................................................................
DUCT SIDE OF UNIT .............................................................................
SIDE OPPOSITE
DUCTS ......................................................................
BOTTOM OF UNIT .................................................................................

[53.7]

INCHES [mm]
0
0
0
0

i
NEC.

REQUIRED
CLEARANCES.
INCHES
BETWEEN
UNITS, POWER ENTRY SIDE ....................................
42.00
UNIT AND UNGROUNDED
SURFACES.
POWER ENTRY SIDE .36.00
UNIT AND BLOCK OR CONCRETE
WALLS AND OTHER
GROUNDED
SURFACES.
POWER ENTRY SIDE .........................
4£00
27.80

REQUIRED

[706.0]

CONDENSER
COiL ACCESS SiDE ..............................................
POWER ENTRY SIDE ....................................................................
(EXCEPT FOR NEC REQUIREMENTS)
UNIT TOP .......................................................................................
SIDE OPPOSITE
DUCTS ..............................................................

CLEARANCE

FOR

O£ERATION

AND

[mm]
[1066.8]
[914.0]
[1066.8]

SERVICING
INCHES [mm]
30.00 [762.0]
3O.OO [762.0]
4&00 [12!92]
30.00 [762.0]

LEGEND

5.44

[13&3]

NEC

3.5o ::
[8&9]

REAR ViEW

National

Electrical

Code

NOTES:
1. Clearances

must be maintained

to prevent

recirculation

of air from outdoor-

fan discharge,
with the exception
of the condenser
coil (36.00 in [914.0
removable fence or barricade
requires no clearance.
50.98

Dimensions

are in inches.

Dimensions

mm]. A

in [ ] are in millimeters.

[1295.0]
(,TTOH ,LIE J:'ilT
COIL

....

CON[
,iO,I L

/ ,_

Iii
31.99

' "!_i"' __i
i

_W,iii

[812.5]
C:TT,M (iF JI, IT

i1!

'_;,i

'\.
I_

O;_IPRESS(;R

SI, EL

5LOWEI,
CO,?OL
_'CCESS £,IEL

B,)',

_1,;}, E,,£P

COIL

2.72

21.61

69.0

[549.0]

F I EL)

_,_T[I

T',}

0.88 DIA.

1.75 D1A.
[44.5]

[22.2]

\\
\\

/
\

;}
i

o
34 13
[8C7.0]

J
i (_(_

LEFT SiDE VIEW

2960
[751.8]

FRONT ViEW

}°
[

[30,6]

/"
/

1.0540 I.D. x .50 DEEP
[26.772

x 12.7]

19.61
[49& 1]

1.0O
[25.4]

RIGHT SIDE VIEW
000004

Fig. 4 - Base

UNIT
50ZP060

ELECTRICAL
208/230-1-60,

Unit Dimensions,

CHARACTERISTICS
208/230-3-60

50ZP060
UNIT

WEIGHT

344

156

CENTER
X
355.6
(14.00)

OF GRAVITY
Y
508.0
(20.00)

IN. (MM)
Z
355.6
(14.00)

Step 4 --

CUT

Unit can be moved
with the handholds
provided
in the unit
basepan.
Refer to Table 1 for operating
weights. Use extreme
caution
to prevent damage
when moving
the unit. Unit must

HAZARD

Failure

to follow this caution

may

result in personal

Sheet metal parts may have sharp edges
and wear appropriate clothing.

These instructions
existing national
these instructions
especially
residential
minimum

remain in an upright position during
unit
must
be level
for
proper

injury.

or burrs.

Use care

ground-level
pad must
When a field-fabricated
level and that it properly

cover minimum
requirements
and conform to
standards
and safety codes. In some instances,
exceed
certain
local codes and ordinances,

those that may not have kept up with changing
construction
practices. We require these instructions
as a
for a safe installation.

GENERAL

50ZP

cooling

units

are fully

self-contained

and

designed for outdoor installation.
See Fig. 1. As shown in Fig. 2-4,
units are shipped
in a horizontal-discharge
configuration
for

Step 5 --

plenum

according

INSTALLATION

Refrigeration,

Step 1 -- Check
UNIT

AND
The unit

local codes

model

are stamped on the unit identification
against shipping papers.

number

and serial number

plate. Check

this information

of the duct system

must be in

NFPA90B;

and/or

local codes

supply-air

ASHRAE

registers

(American

and Air Conditioning

and return-air

Society

Engineers)

recommendations.

and locations.
The 14-in.
(356 mm) round duct collars (size
024-048
units) are shipped inside the unit attached to the indoor
blower. They are field-installed
and must be removed
from the
indoor
cavity
installation.

inspectors
before
removal.
Forward
transportation
company.
Manufacturer

(50ZP060
ONLY) -- The 50ZP060 units are shipped
which must be field-installed
on the unit.

damage

incurred

Check

all

nearest

Carrier

To prevent
installation.

in transit.

items

against

Step 2 -- Provide
SLAB
to

MOUNT

support

the

list.

Immediately

notify

the

office if any item is missing.

leave all parts in original

packages

FLANGES

FOR

even

if they

DUCTWORK

are not

used

for

CONNECTIONS
with flanges

Unit Support
weight.

The

flat

surface

suitable

should

the unit to the flat surface

See Fig. 5. Screws

should be used around the
by grass or shrubs. Do not

except

where

required

3. Install the straight

by local

opening
position.

are field-supplied.

flange

(straight).

Bend

on the right side of the return-air

opening in holes provided. See Fig. 6. Flanges should
out from unit to allow for connection of ductwork.

extend

sides should be flush with the edge of the flat surface. A concrete
pad or a suitable fiberglass mounting pad is recommended.
A 6-in. (152 mm) wide gravel apron
flat surface to prevent airflow blockage

1. Five pieces of flange are shipped on the return-air
of the unit. Remove the flanges from the shipping

until

approximately
2-in. (51 mm) beyond the unit casing on the 2
sides. The duct connection
side and condensate
drain connection

secure
codes.

to start-up,

2. One piece of flange is used as it is shipped
the other 4 pieces at right angles.

Place the unit on a rigid, level surface,

unit

INSTALL

prior

To install unit flanges:
shipping

Air Conditioning

loss or damage,

grilles
Heating,

duct flanges
provided
on the supplyand return-air
on the side of the unit. See Fig. 2-4 for connection
sizes

INSPECT
SHIPMENT
-- Inspect for shipping damage while unit
is still on shipping pallet. If unit appears to be damaged or is torn
loose from its securing points, have it examined
by transportation
claim papers
directly
to
is not responsible
for any

and

and ordinances.

Select and size ductwork,

Use the
openings

Equipment
--

The
the

Select and Install Ductwork

• NFPA90A
or residence-type,
residence-type,
NFPA 90B;

applications

RECEIVING

operations.
drainage;

• the standards of the NFPA (National Fire Protection Association)
for
installation
of nonresidence-type
air conditioning
and
ventilating
systems;

• and/or

with a field-supplied

all moving
condensate

be level before setting the unit in place.
support is used, be sure that the support is
supports the unit.

The design and installation
accordance with:

installation
on
a ground-level
slab.
All
units
can
be
field-converted
to downflow
discharge configurations
for rooftop

IDENTIFY

Place Unit

4. Install 2 hand-formed
flanges onto
holes provided
to form a rectangle

stick

return air opening
around the return

in
air

opening.
5. Install

remaining

air opening
6. Ductwork
When

designing

2 hand-formed

flanges

around

discharge

in holes provided.
can now be attached
and installing

to flanges.

ductwork,

consider

the following:

The unit should be level to within 1/4 in. (6 mm). This is necessary
for the unit drain to function properly,

Step 3 -- Provide
The

required

Clearances

minimum

service

combustibles
are shown in Fig.
condenser air must be provided.

clearances
2-4.

and

Adequate

clearances
ventilation

to
and

The condenser
fan pulls air through the condenser
coil and
discharges it through the fan on the top cover. Be sure that the fan
discharge does not recirculate to the condenser coil. Do not locate
the unit in either a corner or under an overhead obstruction.
The

[]NIT

DAMAGE

HAZARD

Failure to follow this caution may result in damage to unit
components.
When connecting ductwork to units, do not drill deeper
than 3/4 in. (19.1 mm) in shaded area shown in Fig. 7 or
coil ma}z be damaged.

minimum
clearance under a partial overhang
(such as a normal
house overhang)
is 48 in. (1219 mm) above the unit top. The
maximum
horizontal
extension
of a partial overhang
must not

• All units should have field-supplied filters installed in the
return-air side of the unit. Recommended sizes for filters are
shown in Table 1.

exceed

• Avoid abrupt duct size increases and reductions. Abrupt change
in duct size adversely affects air performance. Use flexible
connectors between ductwork and unit to prevent transmission of
vibration. Use suitable gaskets to ensure weathertight and airtight
seal.

48 in. (1219 mm).

Do not place the unit where water, ice, or snow from an overhang
or roof will damage or flood the unit. The unit may be installed on
wood flooring

or on Class A, B, or C roof covering

materials.

• Size ductwork

for cooling

air quantity

(CFM).

• Insulate and weatherproof
all external ductwork.
Insulate
and
cover
with
a vapor
barrier
all ductwork
passing
through
conditioned

spaces.

latest

Sheet

Metal

and

systems.
all ducts

to building

vibration-isolate
duct openings
construction
practices.
Fig. 8 shows

a typical

structure.

Flash,

weatherproof,

in wall or roof according

duct system

Discharge

Units to Downflow

Air

Conditioning
Contractors
National
Association
(SMACNA)
and
Air Conditioning
Contractors
Association
(ACCA)
minimum
installation
standards
for residential
heating and air conditioning
• Secure

Converting Horizontal
(Vertical) Discharge

and

to good

ELECTRICALSHOCK
Failure to follow
injury or death.

HAZARD
this

warning

could

result

in personal

Before performing
service or maintenance
operations on the
system, turn off main power to unit and install lockout tag.

with 50ZP unit installed.
Units

are dedicated

side supply

)roducts.

to vertical air supply. A field-supplied
convert to vertical air discharge.

Step 6 -NOTE:

Provide

are not convertible
must be used

for Condensate

Be sure that condensate-water

with local codes,

They
plenum

restrictions,

Disposal
disposal

methods

comply

and practices.

Unit removes condensate
through a 1-3/64 -in. (26.6 mm) ID hole
which is located at the end of the unit. See Fig. 2-4 for location of
condensate
connection.

FIVE PIECES OF DUCT
FLANGE ATTACHED
HERE FOR SHIPMENT
C00005

Fig. 5 - Shipping

Location

of Duct Flanges

(Size 060 Only)

C00007

Fig. 7 - Area

Not to Be Drilled

Than

3/4-in.

DISCONNECT
pER

Power
--

HAND FORM
*

STRAIGHT PIECE

Wirir

Control

Wiring

Conden

set

Airllow

*Separate di_onnecper NEC
(National Electrical Code)

C00006

Fig. 6 - Flanges

Installed

on 50ZP060

Units

NEC*

A10018

Fig. 8 - Typical

Installation

Table
024
268
122

UNIT 50ZP
SHIPPING WEIGHT
COMPRESSOR
REFRIGERANT

(Ibs)
(kg)
TYPE

I - Physical
030
275
125

2.8
1.3

Charge

(Ib)
(kg)
REFRIGERANT METERING DEVICE
CONDENSER COIL
Rows...Fins/in.
Face Area (sq ft)
CONDENSER-FAN
MOTOR CFM
Nominal Rpm
Motor Hp
Diameter (in.)
(mm)
EVAPORATOR COIL
Rows...Fins/in.
Face Area (sq ft)
EVAPORATOR FAN MOTOR

3.9
1.8

Data
036
284
129

042
048
347
358
157
162
Reciprocating
R-22
4.7
4.4
6.1
2.1
2.0
2.8
Acutrol
Device
Copper Tubes, Aluminum Plate Fins
2...17
1...17
2...17
6.2
11.1
8.6
Propeller
2000
2600
2600
1100
1100
1100
1/4
1/4
1/4
20
20
20
508
508
5O8
Copper Tubes, Aluminum Plate Fins
3...15
3...15
3...15
3.1
3.9
4.3
Direct Drive
10x8
10x9
10x9
254 x 203
254 x 229
254 x 229
1200
1400
1600
800-1050
800-1050
1000-1100
3
3
2
Low
Med
Low
1/2
1/2
3/4
Round
14
356
14
356

7.5
3.4

Blower Motor Size (in.)
(mm)
Nominal CFM
Rpm Range
Number of Speeds
Factory Speed Setting
Motor Hp
CONNECTING
DUCT SIZES

1...17
6.7

1...17
7.9

1600
825
1/8
20
508

2000
1100
1/4
20
508

2...15
2.8

3...15
2.8

10x8
254 x 203
800
550-1000
3
Low
1/4

10x8
254 x 203
1000
550-1000
3
Med
1/4

Supply Air (in.)
(mm)
Return Air (in.)
(mm)
FIELD-SUPPLIED
RETURN-AIR FILTERt
24 x 24
24 x 24
24 x 24
Throwaway (in.)
610 x 610
610 x 610
610 x 610
(mm)
tRequiredfiltersizes
shown are based onthe AHRI(Air Conditioning, Heating and Refrigerationlnstitute)
type or450ff/minforhigh
capacitytype.
Recommended filters are 1-in.(25
mm) thick.

24 x 24
610 x 610

t_"-'-------------d

2...17
10.7
2800
1100
1/4
20
5O8

4...15
4.9
10x10
254 x 254
1850
950-1100
3*,2*
Low
1
Square
13.9 x 13.9
353 x 353
13.9 x 27.8
353 x 706

24 x 30
610 x 762

24x30
610 x 762

rated airflow ata velocity of300ff/minforthrowaway

HIGH-VOLTAGE
POWER WIRING
ENTRY HOLE

1" (25 mm) MIN.

"__

060
394
179

LOW-VOLTAGE
WIRING ENTRY
HOLE

2"(51 mm)MIN.

A08001
Condensate

Trap

(Using

Tubing)

TRAP

idn. (25 ram) mhs.
OUTLET
o

................
j_,
C00010

A09052
Condensate

Trap

(Using

Fig. 9 - Condensate

PVC

Trap

Piping)

Fig. 10 - Unit Electrical

Connection

Entry

Holes

Condensate

water can be drained

directly

installations
(where permitted)
or onto
level installations.
Install a field-supplied
condensate

connection

the outlet
drain-pan

of the trap
condensate

overflowing.
gravel apron,

to ensure

onto the roof in rooftop

proper

drainage.

Make

sure that

is at least 1 in. (25 mm) lower than the
connection
to prevent
the pan from

See Fig. 9. Prime the trap with water. When
make sure it slopes away from the unit.

If the installation

The

a gravel apron in ground
condensate
trap at end of

requires

draining

the condensate

using

Operation

the unit, install a 2-in. (51 mm) trap using a 3/4 -in. OD tubing or
pipe. See Fig. 9. Make sure that the outlet of the trap is at least 1 in.
(25 mm) lower than the unit drain-pan
condensate
connection
to
prevent the pan from overflowing.
Prime the trap with water.
Connect a drain tube using a minimum
of 3/4 -in. PVC, 3/4 -in.
CPVC,
or 3/4 -in. copper
pipe (all field supplied).
Do not
undersize the tube. Pitch the drain tube downward
at a slope of at

disconnect

of unit on improper

ROUTING

POWER

ELECTRICALSHOCK

line voltage

that could
LEADS

constitutes

abuse

and

affect warranty.

INTO

UNIT

Use

only

copper

must

be watertight.

Run

the high-voltage

leads

through

the

hole on the control box side of the unit (see Fig. 10 for location).
When the leads are inside the unit, run leads to the control box
(Fig. 11). For single-phase
yellow wires; for 3-phase
yellow,

units, connect
units, connect

leads to the black and
the leads to the black,

and blue wires (see Fig. 12).

CONNECTING

GROUND

LEAD

TO UNIT

to Fig. 11 and 12. Connect the ground
unit ground lug in the control box.

GROUND

lead to the chassis

COMPRESSOR
CONTACTOR

Refer

using the

TRANSFORMER

Connections

HAZARD

Failure to follow
iniury or death.

this warning

could

result

in personal

o
o

The unit cabinet must have an uninterrupted,
unbroken
electrical
ground to minimize
the possibility
of personal
iniury if an electrical fault should occur. This ground may
consist of an electrical wire connected
to the unit ground
screw in the control compartment,
or conduit approved for
electrical ground when installed in accordance
with NEC,
ANSI/NFPA
70 American
National
Standards
Institute/
National
Canada,
electrical

on the unit over

wire between disconnect
and unit. The high-voltage
leads should
be in a conduit until they enter the unit; conduit termination
at the

least 1 in. (25 mm) for every 10 ft (3 m) of horizontal
run. Be sure
to check the drain tube for leaks. Prime trap at the beginning
of the
cooling
season start-up.
Allowable
glues for condensate
trap
connection
are: Standard ABS, CPVC, or PVC cement.

Step 7 -- Install Electrical

may be mounted

inlet hole. See Fig. 2-4.

may cause unit damage

unit

water away from

field-supplied

the high-voltage

Fire Protection
Association
(latest edition)
(in
Canadian
Electrical
Code CSA C22.1) and local
codes.
GROUND
LUG

INDOOR
FAN
RELAY

OUTDOOR PAN MOTOR
AND COMPRESSOR
START CAPACITOR

HIGH
VOLTAGE
LEADS
A10019

Fig. ll
[]NIT

COMPONENT

DAMAGE

Failure to follow this caution
unit being installed.
1. Make

all electrical

ANSI/NFPA
governing
connections

Box Wiring

HAZARD

may result

connections

- Control

UNIT GROUND

in damage

in accordance

to the

r
[SINGLE-PHASE
|CONNECTIONS

3-PHASE

with NEC

LEAD
_
q

..........................
GROUND[

BLK-

-/
l

70 (latest edition) and local electrical codes
such
wiring.
In Canada,
all electrical
must be in accordance
with CSA standard
C00012

C22.1 Canadian
Electrical Code Part 1 and applicable
local codes. Refer to unit wiring diagram.

Fig. 12 - Line Power

Connections

2. Use only copper conductor
for connections
between
field-supplied
electrical disconnect
switch and unit. DO
NOT USE ALUMINUM
WIRE.
3. Be

sure

operating
3-phase

that

high-voltage

power

to unit

is within

voltage range indicated on unit rating plate. On
units, ensure
phases are balanced
within
2

percent. Consult local power company for correction
improper voltage and/or phase imbalance.
4. Do not damage
internal
through any panel to mount
etc.
HIGH-VOLTAGE

CONNECTIONS

separate
electrical
service
disconnect
switch mounted
to the unit rating
minimum

circuit

components
when
electrical hardware,

The

unit

@
@

drilling
conduit,

must

have

THERMOSTAT
AND SUBBASE

plate for maximum

fuse/circuit

for wire sizing.

breaker

C00013

with
a field-supplied,
waterproof
at, or within sight from the unit. Refer

amps (ampacity)

UNIT CONTROL BOX

size and

Fig. 13 - Control

Connections

ROUTING

CONTROL

with the thermostat

POWER

leads before

WIRES
routing

them

Form

PRE-START-UP

a drip-loop

into the unit. Route

the thermostat leads through grommeted
hole provided in unit (see
Fig. 10) into unit control box. Connect thermostat
leads to unit
control power leads as shown in Fig. 13.
Route thermostat wires through
the panel. Connect low-voltage

grommet providing
a drip-loop
at
leads to the thermostat as shown in

Fig. 13.
The

unit

transformer

supplies

24-v

power

for complete

system.

Transformer
is factory wired for 230-v operation. If supply voltage
is 208 v, rewire transformer
primary as described in the Special
Procedures
for 208-v Operation section below.
SPECIAL

PROCEDURES

FOR 208-V

OPERATION

FIRE,
HAZARD

EXPLOSION,

Failure to follow this warning
could
iniury or death and/or property damage.
1. Follow
goggles

Failure to follow
iniury or death.

this warning

could

result

leak

not

use torch

contains

suspected

to remove

oil and refrigerant

5. To remove

Before performing
service or maintenance
operations on the
system, turn off main power to unit and install lockout tag.

proceed

a component,

to BLK

lockout

wire. Disconnect
the ORG transformer-primary
lead from
the BLK wire. Save wirenut. See unit wiring label.

b. Relieve

2. Remove

wirenut

from

the wirenut

connection

from

RED transformer-primary

of ORG

the terminal

wire

cutter

3. Save the wirenut.

Step 1.
5. Using the wirenut removed from the RED lead, insulate
loose terminal on the ORG lead.

Indoor blower-motor
operation.
Refer to
section.

speeds
Indoor

electrical

tape

so that

the

the metal

may need to be changed
for 208-v
Airflow
and Airflow
Adjustments

any

while

component.

under

pressure.

wear

protective

all refrigerant

System

goggles

and

from system

and low-pressure
connecting

and remove

d. Carefully
necessary.

4. Connect
the RED lead to the BLK wire from which the
ORG lead was disconnected.
Insulate with wirenut
from

connection

power to unit and install

and reclaim

c. Cut component

on the end of the

compressor

tag.

using both high-

lead.

6. Wrap the wirenuts
with
terminals cannot be seen.

around

before
box if

as follows:

a. Shut off electrical
1. Remove

protective
system.

2. Relieve and recover all refrigerant
from system
touching or disturbing
anything inside terminal

4. Do

in personal

and wear
refrigerant

3. Never
attempt
to repair
soldered
refrigerant system is under pressure.

HAZARD

SHOCK

result

recognized
safety practices
when checking or servicing

refrigerant
terminals.

ELECTRICALSHOCK

ELECTRICAL

tubing

component

ports.
with tubing

from unit.

unsweat remaining
tubing stubs when
Oil can ignite when exposed to flame.

Use the Start-Up
Checklist
supplied
proceed
as follows
to inspect and

at the end of this book and
prepare the unit for initial

start-up:
1. Remove

all access panels.

2. Read and follow instructions

on all DANGER,

WARNING,

CAUTION,
and INFORMATION
labels attached
shipped with, unit. Make the following inspections:
a. Inspect

for shipping

broken

and handling

damages

lines, loose parts, disconnected

b. Inspect

for oil at all refrigerant

tubing

to,

such as

wires,

etc.

connections

and

on unit base. Detecting oil generally indicates a
refrigerant leak. Leak-test
all refrigerant tubing
connections
using electronic leak detector, or
liquid-soap
solution. If a refrigerant leak is detected,
following
Check for Refrigerant Leaks section.
c. Inspect

all field-

and factory-wiring

sure that connections
d. Inspect

are completed

coil fins. If damaged

handling,

carefully

3. Verify the following

during

straighten

connections.

see

and tight.
shipping

and

fins with a fin comb.

conditions:

a. Make sure that outdoor-fan
blade is correctly positioned
in fan orifice. Top edge of blade should be 3.125 in.
down from condenser
section.

outlet

grille. See Condenser

b. Make

sure that air filter is in place.

c. Make

sure that condensate

with water

to ensure proper

Fan

drain pan and trap are filled
drainage.

d. Make sure that all tools and miscellaneous
have been removed.

loose parts

START-UP
Use the Start-Up
proceed

Checklist

supplied

at the end of this book,

1. Connect
line.

and

2. Mount

as follows:

Step 1 -- Check
LOCATE

for Refrigerant

AND

CHARGE

REPAIR

THE UNIT

2. Repair
NOTE:

LEAKS

TO USE COOLING

accepted

and

pressure
2. Refer

the system

has been opened

for leaks using an approved

4. Evacuate
additional

refrigerant
system
leaks are found.

5. Charge

unit

with

R-22

Cooling

CHECKING

CONTROL
cooling

1. Place room thermostat
Observe
that blower

refrigerant,

for

Step 2 -- Start-Up
Adjustments
check the unit for proper

refrigerant

4. Recheck

if no

using

internal

Section

control

operation

pressure
chart.

Start

and

within

the

temperature

and read the suction

chart

to determine

what

the suction

is high,

is low, carefully

add refrigerant.

If suction

the suction

recover

pressure

some of the charge.

as charge

is adjusted.

(Fig. 14)

Suction Temperature
should be ............. 70 °F (21 ° C)
(Suction Temperature
may vary _+5 ° F. [2.8°C])
If Chargemaster ® charging
device is used, temperature

and Make

OPERATION

must

line

does not

Outdoor Temperature
..................... 85 ° F (29 ° C)
Suction Pressure ....................... 80 psig

volume

on the suction
temperature

be.

temperature

or accurate
scale. Refer to
charge. Be sure to add extra

compensate
filter drier.

COOLING

should

EXAMPLE:

volumetric-charging
cylinder
unit rating plate for required
refrigerant
field-installed

method.

and reclaim

device
ambient

CHARTS

ambient

to appropriate

3. If suction
system

port on the suction

gage.

temperature

for repair.
3. Check

CHARGING

1. Take the outdoor

practices.

a filter drier whenever

sensing

it so that outdoor

affect the reading.
Indoor-air
cfm
normal operating range of the unit.

AND

and low-pressure
ports, locate leaks
refrigerant to relieve system pressure.

leak following

Install

Leaks

REFRIGERANT

gage to the service

the temperature

and insulate

AS FOLLOWS:

1. Using both highreclaim remaining

the pressure

Step 4 -ments

readings

must be accomplished

Indoor Airflow

using

and Airflow

and

the charging

Adjust-

as follows:

SYSTEM
switch in OFF position.
motor starts when FAN switch
is

placed in ON position and shuts down when FAN switch
placed in AUTO position.

2. Place SYSTEM switch in COOL position and FAN switch
in AUTO
position.
Set cooling
control
below
room

NOTE:

For cooling

operation,

to 450 CFM for each 12,000

the recommended

airflow

Btuh of rated cooling

capacity.

Table 2 shows dry coil air delivery for horizontal
Tables 3-NO TAG show pressure drops.
NOTE:

Be sure that all supply-

free from obstructions,

and return-air

and adjusted

discharge
grilles

is 350

units.

are open,

properly.

temperature.
Observe that compressor,
condenser
fan, and
evaporator
blower motors start. Observe that cooling cycle
shuts down when control setting is satisfied.
3. When

using

automatic

changeover

room

thermostat,

place both
SYSTEM
and FAN switches
positions. Observe that unit operates in Cooling
temperature
temperature).

control

is set to "call for cooling"

Step 3 -- Refrigerant
Amount

of refrigerant

to Table 1). Refer
Manual, Refrigerants

CHARGE

evacuating

system,

(below

room

Charge

to Carrier
section.

Use

Failure to follow
iniury or death.

Refrigerant

Service

unit is operating

standard

weigh

evacuating

in the specified

during

techniques.

amount

After

of refrigerant

Airflow can be changed
blower motor.

used. Charts are based on charging the units to the correct
for the various operating
conditions.
Accurate pressure

To measure

suction

sensing
pressure,

device are required.
perform

warning

could

result

in personal

the following:

by changing

the lead connections

Units 50ZP024,036,048,
and 060 blower motors are factory
for low speed operation. Units 50ZP030 and 042 are factory
for medium speed operation.
FOR 208/230-V

The motor

3-SPEED
black = high speed
blue = medium speed
red = low speed

LOW CHARGE COOLING
-- Use Cooling Charging Charts, Fig.
14-19. Vary refrigerant until the conditions of the appropriate chart
are met. Note that charging
charts are different from the type

gage and temperature

this

(also refer
Techniques

(refer to Table 1).

normally
superheat

HAZARD

Disconnect
electrical power to the unit and install lockout
tag before changing blower speed.

charge is listed on unit nameplate

Unit panels must be in place when
charging procedure.
NO

ELECTRICALSHOCK

in AUTO.
mode when

To change the speed
motor speed leg lead
and replace with lead
removed lead to avoid

leads are color-coded

of the
wired
wired

as follows:

2-SPEED
black = high speed
red = low speed

of the blower motor (BM), remove the fan
from the indoor (evaporator)
fan relay (IFR)
for desired blower motor speed. Insulate the
contact with chassis parts.

", %81 i 1 3

KDOORTEMP
_FoO

8{3 31 13

Lr)
t

2 _

15
05

46
41

65
55

18
13

•
bU
Z4qo_
....
z

2 7_;I

40
I

/,o

hU(T]ON LINE
I
I
4
I 0
%UCTI ON LINE

rEHPERATURE (°F)
I
I
I6
21
rENPERA rURE (_ (

'!I

4 :,

I
27

I
_2

5U(}T]ON LINE
I
I
4
I0
SUCT I ON LINE

rEHPERATURE (°F)
I
I
I6
21
rENPERA rURE (_ C)

I
27

I
1!/2

C00015

Fig. 14 - Cooling

Charging

Chart,

000017

50ZP024

Fig. 16 - Cooling

Charging

Chart,

50ZP036

Units

OUTDOOR
TEMP
F
O

2
.,,_4

105

,,_q

_@,,__

,,,,,,_ _

40
I

-'UCT]ON LINE
I
I
4
I 0
%U(T I ON LINE

rEHPERATURE (°F)
I
I
I@
21
rENPERA FURE (_ ()

80
I
27

)

I
_2

",UCT]ON LINE
I
I
4
I0
%U(TI ON LINE

(X)

FEHPERATURE (°F)
I
I
I@
21
FEHPERAFURE ("()

I
27

I
_2

C00016

Fig. 15 - Cooling

Charging

(:hart,

50ZP030

C00018

Units

Fig.

Cooling

Charging

(:hart,

50ZP042

Units

Step 6 -FAN

Sequence

OPERATION

indoor

fan operation.

position,
terminal

of Operation

-- The FAN switch
When

the FAN

the IFR (indoor-fan
on the thermostat.

on the thermostat
switch

is placed

relay) is energized
The normally-open

controls
in the ON

through
contacts

the G
close,

which then provide
power to the indoor (evaporator)
fan motor
(IFM). The IFM will run continuously
when the FAN switch is set
to ON.
When

the FAN

switch is set to AUTO,

the thermostat

deenergizes

the IFR (provided there is not a call for cooling). The contacts open
and the IFM is deenergized.
The IFM will be energized only when
there is a call for cooling.
NOTE:
50ZP030 and 060 units
relay. On these units, the indoor

are equipped
fan remains

with a time-delay
on for 30 seconds

after G or Y is deenergized.
COOLING
-- On a call for cooling, the compressor
contactor (C)
and the IFR are energized
through the Y and G terminals of the
thermostat.
On units with a compressor
time-delay
relay, there is a

[,o

hU(T]ON LINE
I
I
4
I 0
%U(}T I ON LINE

rENPERATURE (°F)
I
I
I6
21
rENPERA rURE (_ (

8©

I
27

I
_2

5-minute
(_+ 45 sec) delay between compressor
starts. Energizing
the compressor
contactor supplies power to the compressor
and the
outdoor
provides
When
C00019

Fig. 18 - Cooling

Charging

Chart,

50ZP042

Units

(condenser)
fan motor
power to the IFM.
the

compressor,
is equipped
energized

need

for

cooling

(OFM).
has

Energizing

been

satisfied,

the
the

IFR
OFM,

and IFM (FAN on AUTO) are deenergized.
If the unit
with a 30-second
delay, the indoor fan will remain
for 30 seconds

after the compressor

is deenergized

(030

and 060 units only).

MAINTENANCE
To ensure
continuing
possibility
of premature

high performance,
equipment
failure,

and to reduce
the
periodic maintenance

must be performed
on this equipment.
This cooling unit should
inspected
at least once each year by a qualified service person.

be
To

troubleshoot
cooling
back of book.

NOTE:

of units,

TO EQUIPMENT

about the availability

PERSONAL
HAZARD

refer

OWNER:

of a maintenance

INJURY

to Troubleshooting
Consult

your

chart
local

dealer

contract.

AND

UNIT

DAMAGE

Failure to follow this warning
could result in personal
iniury or death and possible unit component
damage.

",UCT]ON LINE
I
I
4
I 0
%U(T I ON LINE

rENPERATURE (°F)
I
I
I6
21
FEMPERAFURE ("()

I
27

I
_2

The ability
to properly
perform
maintenance
on this
equipment
requires
certain
expertise,
mechanical
skills,
tools and equipment.
If you do not possess these, do not
attempt to perform any maintenance
on this equipment,
other than those procedures
recommended
in the Owner's
Manual.
C00020

Fig. 19 - Cooling

Charging

Chart,

50ZP060

Units

The minimum maintenance requirements for this equipment are as
follows:

Step 5 -- Unit Controls
All compressors
HIGH-PRESSURE
the pressure
excessive.

have the following
RELIEF

differential

VALVE

between

COMPRESSOR
OVERLOAD
to the compressor
when either

internal-protection
--

This valve

the low and high

1. Inspect air filter(s) each month.
necessary.

controls.
opens

when

2. Inspect indoor coil, outdoor coil, drain pan, and condensate
drain each cooling season for cleanliness. Clean when
necessary.
3. Inspect blower motor and wheel for cleanliness each
cooling season. Clean when necessary.

side becomes

-- This overload interrupts power
the current or internal temperature

become
excessive,
and automatically
resets when the internal
temperature
drops to a safe level. This overload may require up to

4. Check electrical connections for tightness and controls for
proper operation each cooling season. Service when
necessary.
5. Check the drain channel in the top cover periodically for
blockage (leaves, insects). Clean as needed.

60 minutes (or longer) to reset; therefore, if the internal overload
is
suspected of being open, disconnect the electrical power to the unit
and check the circuit through the overload
with an ohmmeter
or
continuity

Clean or replace when

tester.
12

Step 3 --

ELECTRICALSHOCK
HAZARD
Failure
to follow these warnings
could
injury

Evaporator

Blower

and Motor

For longer life, operating
economy,
and continuing
clean accumulated
dirt and grease from the blower
motor annually.
result

efficiency,
wheel and

in personal

or death:

1. Turn off electrical power and install lockout tag to the
unit before performing
any maintenance
or service on
this unit.

ELECTRICALSHOCK

2. Use extreme

Failure to follow this warning
injury or death.

caution

when removing

3. Never place anything
with the unit.

combustible

panels

and parts.

either on or in contact

HAZARD

could result in personal

Disconnect electrical power, and install lockout tag to the
unit before cleaning and lubricating the blower motor and
wheel.

Step 1 -- Air Filter
IMPORTANT:

Never operate

in the return-air
same dimensional
for recommended

the unit without

each cooling season
dust and lint.
filters

originally

or whenever

with

provided,

When

To clean the blower
1. Access

the

same

clogged

dimensional

and

size

type

b. Remove

3 screws that hold blower

2. Remove

and cleaning,

and condensate

drain

which secure
wheel

procedures

(clips)

on blower

wheel vanes.

wheel and housing with vacuum cleaner, using a soft
brush attachment.
Remove grease and oil with a mild
solvent.

that

pan inspection

c. Reassemble
blower into housing.
ring on blower to judge location

and

cleaning.

Blower wheel
below bottom

Failure to follow
injury or death.

HAZARD

this warning

d. Set upper
step 1.

could result in personal

e. Replace

Disconnect electrical power, and install lockout tag to the
unit before removing top.
Only

qualified

service

procedures

that require

Refer to the following
1. Remove

personnel

should

perform

maintenance

and

procedures:

Inspect

and are not on

orifice ring in place with 3 screws
top access

the condenser

removed

panel.

coil, evaporator

Coil, and

coil, and condensate

pan at least once each year. Proper inspection and cleaning
the removal of the unit top. See Unit Top Removal section

drain
requires
above.

7 screws

unit

top

cover

surface.

(Save

all

The coils are easily cleaned when dry; therefore, inspect and clean
the coils either before or after each cooling season. Remove
all

2 screws

unit

top

cover

flange.

(Save

all

obstructions
(including
weeds and shrubs) that interfere with the
airflow through the condenser
coil. Straighten bent fins with a fin
comb. If coated with dirt or lint, clean the coils with a vacuum

Set top on edge and make sure

cleaner, using a soft brush attachment.
Be careful not to bend the
fins. If coated with oil or grease, clean the coils with a mild

screws.)
2. Remove

on motor

Step 4 -- Condenser
Coil, Evaporator
Condensate Drain Pan

unit top removal.

top removal

Place upper orifice
of the blower wheel.

should be approximately
0.2-in. (5 mm)
of orifice ring when centered correctly.

Be sure setscrews are tightened
round part of shaft.
ELECTRICALSHOCK

wheel to motor shaft.

as follows:

b. Remove caked-on dirt from wheel and housing with a
brush. Remove lint and/or dirt accumulations
from

require removal of the unit top, be sure to perform all of the routine
maintenance
procedures
that require top removal, including
coil
inspection

setscrew(s)

and clean blower

weights

or service

orifice ring to blower

Save screws.

a. Lift wheel from housing. When handling and/or
cleaning blower wheel, be sure not to disturb balance

(Condenser-Coil

maintenance

as follows:

top access panel.

when necessary.

performing

assembly

a. Remove

c. Loosen

with

wheel:

the blower

housing.

month
and replace
at least twice during

the filters become

Step 2 -- Unit Top Removal
Side)
NOTE:

air filter

duct system. Always replace the filter with the
size and type as originally installed. See Table 1
filter sizes.

Inspect
air filter(s)
at least once
each
(throwaway-type)
or clean (cleanable-type)

Replace

a suitable

screws.)
3. Lift top from unit carefully.
that top is supported
plenum) side.

by unit side that is opposite

duct (or

4. Carefully replace and secure unit top to unit, using screws
removed in Steps 1 and 2, when maintenance
and/or service
procedures are completed.

detergent-and-water
solution. Rinse coils with clear water, using a
garden hose. Be careful not to splash water on motors, insulation,
wiring, or air filter(s).
from inside to outside

For best results, spray condenser-coil
fins
the unit. On units with an outer and inner

condenser
coil, be sure to clean between
all dirt and debris from the unit base.
Inspect
the coils.

the drain

pan and condensate

the coils. Be sure to flush
drain

Clean the drain pan and condensate

line when

inspecting

drain by removing

all

foreign
matter
fromthepan.Flushthepananddraintubewith
clear
water.
Donotsplash
water
ontheinsulation,
motor,
wiring,
or
airfilter(s).
If thedraintubeisrestricted,
clear
itwitha"plumbers
snake" or similar probe device. Ensure
above the drain tube is also clear.

Step 5 -- Condenser

that the auxiliary

drain port

Step 8 --

and that the air filter
Airflow
and Airflow
airflow.

Fan

Step 9 -OPERATION

Failure to follow
components.

HAZARD

this caution

Keep the condenser
fan free from all obstructions
proper cooling operation.
Never place articles
unit.

assembly

cover, and fan) by removing
onto unit top cover.

4. Adjust

fan height

as shown

setscrews.

6. Replace

condenser-fan

Step 6 -- Electrical
Inspect

to ensure
on top of

motor,

and flipping

motor

top

panel

in Fig. 20.

and Wiring

controls

and wiring

annually.

controls

and

power to the unit.

to locate

all the

electrical

wiring. Check all electrical connections
for tightness.
Tighten all
screw connections.
If any smoky or burned
connections
are
noticed, disassemble
the connection,
clean all the parts, restrip the
wire end and reassemble

the connection

properly

and securely.

C00021

Fig. 20 - Condenser-Fan

Adjustment

After inspecting the electrical controls and wiring, replace all the
panels. Start the unit, and observe at least one complete cooling
cycle to ensure proper operation.
If discrepancies
are observed in
operating cycle, or if a suspected
each
electrical
component
instrumentation.
checkouts.

Refer

malfunction
with
the

to the unit wiring

NOTE:
Refer to the Sequence of Operation
determining
proper control operation.

Step 7 -- Refrigerant

has occurred, check
proper
electrical

label when

making

section,

these

as an aid in

Circuit

Inspect all refrigerant tubing connections
and the unit base for oil
accunmlations
annually.
Detecting
oil generally
indicates
a
refrigerant

leak.

If oil is detected

or if low

cooling

performance

is suspected,

leak-test all refrigerant tubing using an electronic leak-detector,
or
liquid-soap
solution. If a refrigerant leak is detected, refer to Check
for Refrigerant
Leaks section
If no refrigerant
leaks are found and low cooling
suspected, refer to Refrigerant Charge section.

performance

Chart

START-UP

assembly

Use the Start-Up

Controls

sure to turn off the electrical
the

screws

and are located

TROUBLESHOOTING

assembly.

and check the electrical

Remove

(grille,

orifices

coil.

The liquid line strainer (to protect metering device) is made of wire
mesh and is located in the liquid line on the inlet side of the
metering device.

fan hub setscrews.

5. Tighten

are fixed

to the evaporator

Refer to the Troubleshooting
information.

condenser-fan

3. Loosen

Devices

devices

Step 10 -- Liquid Line Strainer

to unit

1. Shut off unit power supply.
2. Remove

is clean. When necessary,
refer to Indoor
Adjustments
section to check the system

Metering
metering

the inlet header

may result in damage

Airflow

The cooling airflow does not require checking
unless improper
performance
is suspected.
If a problem
exists, be sure that all
supplyand return-air
grilles are open and free from obstructions,

Refrigerant
UNIT

Evaporator

Checklist

(Table

5) for troubleshooting

CHECKLIST

at the back of this manual.

Table
2 Motor

Unit

Dry Coil Air Delivery*

Horizontal

Discharge

10 % for 208 Volt Operation)

0.3
282
Cfm
8O2
Watts
378
024
Med
Cfm
1038
Watts
510
High
Cfm
1285
Watts
282
Low
Cfm
8O2
Watts
378
030
Med
Cfm
1038
Watts
510
High
Cfm
1285
Watts
420
Low
Cfm
1204
Watts
445
036
Med
Cfm
1205
Watts
610
High
Cfm
1581
Watts
440
Low
Cfm
1224
Watts
450
042
Med
Cfm
1241
Watts
678
High
Cfm
1688
Watts
801
Low
Cfm
1898
048
Watts
870
High
Cfm
2000
Watts
89O
85O
810
Low
Cfm
1834
1820
1791
1040
1018
1000
060t 2
Med
Watts
2230
2102
2025
Speed
Cfm
Watts
1073
1038
1001
High
Cfm
2230
2202
2160
Watts
1058
1008
942
Low
Cfm
2384
2200
2197
060 3
Watts
1266
1086
1021
Med
2724
2476
2392
Speed
Cfm
Watts
1301
1216
1197
High
Cfm
2760
2618
2543
* Air delivery values are based on operating voltage of 230 v dry coil, without
able for ducting,
See Tables 3-NO TAG.
NOTES:
1. Do not operate the unit at a cooling airflow that is less than 350 cfm for each 12,000 Btuh of rated cooling capacity. Evaporator
airflows below this point.
2. Dashes indicate portions of the table that are beyond the blower motor capacity or are not recommended.
Speed

0.1
288
875
390
1131
528
1391
288
875
390
1131
528
1891
450
1231
470
1302
660
1700
478
1303
481
1310

(Deduct

External Static Pressure (IN. W.C.)
0.4
0.5
0.6
0.7
0.8
0.9
279
274
268
261
734
668
582
478
369
360
350
34O
978
917
830
721
495
480
460
45O
1200
1115
1018
92O
279
274
268
261
734
668
582
478
369
360
350
34O
978
917
830
721
495
480
460
45O
1200
1115
1018
92O
400
380
335
326
311
1120
1008
950
863
751
410
388
359
338
321
1163
1081
940
873
783
575
540
505
485
46O
1450
1297
1190
1095
999
411
378
350
327
317
1179
1126
1022
911
816
438
404
370
338
32O
735
1181
1110
1022
943
811
647
618
578
540
5OO
1618
1510
1421
1309
1187
76O
730
688
650
6OO
1841
1757
1682
1564
1429
842
818
782
696
632
1903
1799
1718
1625
1446
790
735
680
580
480
1762
1703
1640
1415
1159
950
950
890
835
790
650
580
1960
1901
1855
1752
1468
1121
958
896
840
800
691
575
2122
2052
1926
1791
1588
1202
891
860
828
750
700
630
2071
1989
1889
1820
1729
1840
1002
977
924
860
819
700
2344
2262
2132
2001
1910
1820
1127
1058
1011
979
869
870
2423
2292
2169
2056
1943
1832
filter. Deduct wet coil, filter pressure drops to obtain external static pressure avail-

Air
Delivery
Watts

Low

0.2
285
820
383
1090
520
1338
285
820
383
1090
520
1338
435
1218
450
1264
635
1660
458
1270
468
1280
798
1736

Table
UNIT SIZE 50ZP

030

036

042

048

060

Table

024-042
048,060

Coil

Pressure

FILTER

SIZE

IN.

(mm)

24 x 24

coil frosting

may occur at

Drop

AIRFLOW (CFM)
6OO
7OO
8OO
9OO
9OO
1000
1200
1000
1200
1400
1600
1000
1200
1400
1600
1400
1600
1800
1700
1800
2100
2300

024

UNIT SIZE 50ZP

3 - Wet

150600
163685

PRESSURE

(IN.

DROP (IN. W.C.)
0.02
0.05
0.06
0.07
0.06
0.06
0.08
0.07
0.09
0.11
0.12
0.04
0.06
0.08
0.09
0.07
0.08
0.09
0.07
0.08
0.09
0.10

4 - Filter

Pressure

Drop

W.C.)

500

600

700

800

900

CFM
1000

1100

1200

1300

1400

0.06

0.07

0.08

0.09

0.10

0.11

0.12

0.08

0.09

(810 x 610)
24 x 30
(610 x 762)

UNIT SIZE 50ZP
024-042
048,060

CFM
FILTER

SIZE

IN. (mm)

24 x 24
(810 x 610)
24 x 30
(610

x 762)

1500

1600

0.14

0.15

0.10

0.11

1700

1800

1900

2000

2100

2200

2300

0.12

0.13

0.14

0.15

0.16

0.17

0.18

NAXIMU_ WIRE
SIZE 2 AWG

I
TNERNOSTATSUB-BASE

COI_MON

(SEE

NOTE_D)

ear SPLICE
BOX

LEGEND

COMPONENTARRANGEMENT
_KEL_

FIELO

SPLICE

_ARNEO

WIRE

TERMINAL

OFN J

DR_

(NARNED)

TENNINNL

(NN_ANNES)

TERNINAL

BLOCK

SPLICE

{_ARKED)

FACTORY

_IRIRG

FIELD

CONTROL

FIELS

PO_ER

_IRIRG
_[RING

OR OPTIONAL

ACCESSORY

_IRING

TO INDICATE CO,NON
POTENTIAL
ONLY:
_._{030,03G_04R

NOT TO

A $60)

RRN D OPM

REPRESENT

CONFAC TOR,CO_PRESSOR

CAP

CAPACITOR

CONP

COMPRESSOR

EOUIP

EONIPHENT

FL
FR
GNS

FNSE LINK
FUSE
GROUND

HEATER

RELAY

IP_

INDOOR

FAN ROTOR

ROTOR

{STRIP

IPN
[P

INDOOR FAN RELAY
INTERNAL
PROTECTOR

0fN

OUTDOOR

OT
SB

OUADRUPL Z TERmiNAL
SLO_ 8LO_ FUSE

ST
TB
TDR

START
TNEN_STSR
TERMINAL DLOCK
T[_E DELAY RELAY

TH
TRAM

THERmOSTAT-HEATING
TRARSFORf_ER

NEAT)

FAR _OTOR

_IRING

NOTES

CAPe
CAP1

l. IP ANY OF TIE ORIGINAL
_IRE FURNISHED
RUST BE REPLACED,
IT HURT BE REPLACED

IP_ CAP
EONIP GNO
==L-.

• ITR
£.SEE
ANO
3. SET

TYPE

SRBBASE
NEAT

90=G _IRE
PAGES FOR

PRICE

PART

ITS

EOUIVALENT.

TNERNOSTAT
FAN SEOUENCE FOR

RUNNERS.

ANTICIPATOR

,_.USE ?D_C COPPER
CONDUCTORS
ONLY.
S._)/_D
IS CONNECTED
ONLY IF EXTERNAL
HEATING
SOURCE
IS USES.

{ODa

IPR;D

D 048)

TDR

rTOR
j)% ,31
_

0
@
NERGIZED

T
T_3O
0
OE -ENERGIDEO

50ZP500656

A
A10093

Fig. 21 - 50ZP

208/230-1

Wiring

Diagram

MAXIMUM WIRE
BIZE 2 AWB

SCHEMATIC
208/230-3-60

BLK_

L_---_) o,,
P_L===

_======_

TEL

COMP

IFR
B_

_IIt_BL

U __
BLU

OVERLOAD

(O_IB)

(036,04B

I_ OBOE

PROTECTOR

ALL EXCEPT

O4B

---:LL
--l

',
ANI

=_,

GRN-YEL_

-i:::=-_--__.=--_o=

-ooo_ i.=-i_

_',O=B.O,=BOBO,
_I

kBR°--kV=RL=E

o=Jl _=o=--Ic

B°=
|

........
COMMON,

(_E

.........

NOTE_2)

oX],oo
IfR_3

LEGEND
COMPONENT ARRANGEMENT

FIELD
_X)

SPLICE

HARKED

NINE

TERNINAL
0

{BARKED)

TERNINAL

{UNIARKEB)

TERMINAL

BLOCK

5PLIOE
SPLICE

(HAIIKEB)

FACTORY

WIRING

FIELD

CONTROL

FIELD

POWBR

lllllllllmmllllllllm
ACCEBBOIIY
TO

WIRING
WIRING

INDICATE

OPTIONAL

WIRING

CONNOB

POTENTIAL
ONLY=
NOT TO REPREBENT

CONTACTOR,COHPREBSOR

CAP
CONP

CAPACITOR
CONPBEBBOR

EQUIP

EQUIPMENT

FL
FU
BIB

FUBE LINK
FoBl
GROUND

I_R

_ATER

RBLAY

)FN

INDOOR

FAN ROTOR

ROTOR

CBTRIP

IFR
IP

INDOOR FAN BELAY
INTERNAL
PROTECTOR

OFN
OT

OUTDOOR
FAN ROTOR
OUADRUPLE
TERNIWAL

SB
TB

BLOW BLOW FUBE
TERMINAL
BLOCK

TOR
TH

TINE DELAY
RELAY
THBRHOBTAT=HBATING

TRAN

TRANBFORNER

_AT)

WIRING

NOTEB
l. IF

All Of

MUST BE

TIIE ORIGINAL
REPLACED,

WITH TYPE 9O'C
2.BEE PRICE
PAGEB
AND
3.USE

BUBBASI_
7B_C

PART

COPPER

WIRE

IT MUST

FURNI_B

REPLACED

WIRE OR ITS EOUIVALENT,
FOR TIIEBMOBTAT
NUMBERB,
CONBUCTORB

_.Wl/W?
IS CO_NECTED
O_LY
[XT[RNAL
H[ATING
SOORC[

ONLY.
IF
IS US[D.

FANBEOOENCE
FOBTOR
TOR
_I,3)

I
O
B
ENIRGIZEB

I
I
T
T_3O
O
BE=ENERGIZED

50/P50066

CO4B)

A
A10094

Fig. 22 - 50ZP

208/230-3

Wiring

Diagram

Table

5 - Troubleshooting

SYMPTOM

Compressor and outdoor fan
will not start

Compressor
runs

will not start but condenser

Chart

CAUSE

fan

Compressor cycles (other than normally satisfying) cooling/heating
calls

REMEDY

Power failure

Call power company

Fuse blown or circuit breaker tripped

Replace fuse or reset circuit breaker

Defective contactor, transformer, control relay, or
high-pressure,
or low-pressure switch

Replace component

Insufficient line voltage

Determine

Incorrect or faulty wiring

Check wiring diagram and rewire correctly

Thermostat

Reset thermostat

setting too low/too high

Check wiring and repair or replace

Compressor

Determine

motor burned out, seized, or

Replace compressor

Defective run capacitor, overload, or PTC (positive
temperature coefficient) thermistor

Determine

One leg of 3-phase

Replace fuse or reset circuit breaker
Determine cause

power dead

head

pressure

Determine

Refrigerant overcharge

Recover refrigerant,
charge to capacities

or undercharge

Excessive suction pressure

Suction pressure too low

cause and correct
evacuate system, and reshown on rating plate

Defective compressor

Replace and determine cause

Insufficient line voltage

Determine

cause and correct

Blocked outdoor coil

Determine

cause and correct

Defective run/start capacitor, overload or start relay

Determine

cause and replace

Faulty outdoor fan motor or capacitor

Replace

Restriction in refrigerant

Locate restriction and remove

system

Replace filter

temperature

Decrease
set too low

load or increase unit size

Reset thermostat

setting

Low refrigerant charge

Locate leak, repair, and recharge

Air in system

Recover refrigerant,
charge

Outdoor coil dirty or restricted

Clean coil or remove restriction

Dirty air filter

Replace filter

Dirty indoor or outdoor coil

Clean coil

Refrigerant overcharged

Recover excess refrigerant

Air in system

Recover refrigerant,
charge

Indoor or outdoor air restricted
Head pressure too low

cause and replace

Low input voltage

Thermostat

Excessive

cause

internal overload open

Unit undersized for load

operates continuously

setting

Faulty wiring or circuit
Loose connections in compressor

Dirty air filter

Compressor

cause and correct

or air short-cycling

Determine

evacuate system, and re-

cause and correct

Low refrigerant charge
Restriction in liquid tube

Check for leaks, repair and recharge
Remove restriction

Refrigerant overcharged

Recover excess refrigerant

Dirty air filter
Low refrigerant charge

Replace filter
Check for leaks, repair and recharge
Remove source of restriction

Metering device or low side restricted
Insufficient coil airflow
Temperature

too low in conditioned

Outdoor ambient below 55°F (13°C)
Filter drier restricted

area

Check filter-replace if necessary
Reset thermostat setting
Install low-ambient kit
Replace

START-UP
(REMOVE
I. PRELIMINARY

AND

CHECKLIST
STORE

IN JOB

FILE)

INFORMATION

Model No ............................................................................................................................................................
Serial No .............................................................................................................................................................
Date .....................................................................................................................................................................
Technician
Customer

..........................................................................................................................................................
Information(Name/Address)

.....................................................................................................................

II. PRE-START-UP
__
__

Verify that all packing
Verify that condensate

materials have been removed from unit.
connection
is installed per installation instructions.

__
__

Check all electrical connections
and terminals for tightness.
Check wire proximity to refrigerant tubes and sheet metal edges.

__
__
__

Check that indoor (indoor)
Verify that unit installation
Check fan wheel propeller

IlL START-UP
Supply Voltage: L1-L2
Compressor Amps: LI(C)
Indoor Fan Amps:
TEMPERATURE-Cooling

L2-L3
L2(S)
Outdoor Fan Amps:

Refrigerant Suction
Suction Line Temp*
Refrigerant Discharge
Discharge Temp]-

tightness.

L3-L1
L3(R)

Mode
DB

Outdoor Air Temperature:
Return-Air
Temperature:
Cooling Supply Air:
PRESSURES-Cooling

air filter is clean and in place.
is level.
for location in housing and setscrew

DB
DB

WB
WB

Mode
psig
psig

*Measured at suction inlet to compressor
]-Measured at liquid line leaving outdoor coil

2010 Carrier Corp. • 7310 W. Morris

Manufacturer

reserves

the right to change,

St. • Indianapolis,

IN 46231

at any time, specification8

and design8

Printed
without

in U.S.A.

Edition

notice and without

Date:

02/10

obligations,

Catalog No: 50ZP-06SI
Replaces:

50ZP-4SI

Source Exif Data:

File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.2
Linearized                      : No
Page Count                      : 20
Page Layout                     : SinglePage
Page Mode                       : UseNone
Producer                        : Goby Monitor Application version 4, 0, 0, 13
Create Date                     : Sun Mar 14 04:14:23 2010
Author                          : 
Title                           : 
Subject                         :

EXIF Metadata provided by EXIF.tools

Carrier 50ZP042300 User Manual PACKAGE UNIT Manuals And Guides L1003132

CARRIER Package Units(both units combined) Manual L1003132 CARRIER Package Units(both units combined) Owner's Manual, CARRIER Package Units(both units combined) installation guides

Navigation menu

Versions of this User Manual:

Views

Navigation