PAYNE Package Units(both Units Combined) Manual L0410505

User Manual: PAYNE PAYNE Package Units(both units combined) Manual PAYNE Package Units(both units combined) Owner's Manual, PAYNE Package Units(both units combined) installation guides

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II PAIZ 24-1
11/15/97

New

CONTENTS
Page
SAFETY CONSIDERATIONS
......................
I. General
...................................
RECEIVING
I. Step
II.
Ill.

Step
Step

AND

INSTALLATION

1 --

Check

2 -3 --

Provide
Provide

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

Equipment
Unit Support
Clearances

VI.

Step 6 -Disposal

Provide
for Condensate
..................................

VII.

Step

Install

START-UP
I.

........................
install Ductwork

Electrical

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

Place
Unit
Select and

PRE-START-UP

5-10

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

IV. Step 4 -V. Step 5 --

7 --

1 4
1

5
5

..........

Connections

.........

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

for

Refrigerant

11 14
Leaks

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

Indoor Airflow
Unit Controls

VI.

Sequence

MAINTENANCE
I.

Air Filter

I1. Unit

of Operation

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

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

Top Removal

(Condenser

.................................
Blower
and Motor

Condenser
Coil,
and Condensate

Evaporator
Drain Pan

Condenser

Fan

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

Electrical

Controls

IX.
X.

Refrigerant
Evaporator

Circuit
Airflow

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

Coil,
..................

and Wiring

TROUBLESHOOTING
CHECKLIST

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

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

COOLING

CHART

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

16
16

SAFETY
Installation

and

CONSIDERATIONS

servicing

of air-conditioning

equipment

be hazardous
due to system
pressure
and electrical
nents.
Only trained
and qualified
workers
should
repair,
or service
air-conditioning
equipment.
Untrained

workers

can

perform

basic

maintenance

flmc-

tions of cleaning
coils and filters.
All other
operations
be performed
by trained
service
people.
When working
conditioning
equipment,
pay attention
to precautions
literature,
precautions

tags and labels attached
that may apply.

to the unit,

can
compoinstall,

should
on airin the

and other

safety

16
17
17
17
17

Metering
Devices
..........................
Liquid
Line Strainer
........................

START-UP

14
14

14 17

IV.

VI.

.......

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

Coil Side)
II1. Evaporator

VII.
VIII.

11
11

and Airflow
Adjustments
..............................

Fig. 1 -- Unit PAIZ (Size 036 Shown)

I1. Start-Up
Cooling
Section
and
Make Adjustments
.........................
II1. Refrigerant
Charge
.........................
IV.
V.

7
11

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

Check

5
6

Follow all safety
Use quenching
extinguisher

codes. Wear safety
cloth
for unbrazing

available

for all brazing

glasses
and
operations.

work gloves.
Have
fire

operations.

17
17
............

18
CL-1

I. GENERAL
NOTE TO INSTALLER -- Before the installation,
READ
THESE INSTRUCTIONS
CAREFULLY AND COMPLETELY.
Also, make sure the Owner's Manual and Sex-vice Instruc
tions are left with the unit after installation.

The

PA1Z

cooling

unit

is flflly

selficontained

and

designed

for outdoor
installation,
See Fig. 1. As shown in Fig. 2 4, units
are shipped
in a horizontal
discharge
configuration
fox" instal
lation
on a ground
level slab. All units can be field converted
to downflow
discharge
with a field-supplied

configurations
plenum.

for rooftop

applications

_294

0
[11.51]

REQUIRED

_4080

CLEARANCES

TO COMBUSTIBLE

MAT'L -- mm (in.)

[16.N6]

Top of Unit ......................................
Duct Side of Unit ..................................
Side Opposite Ducts ................................
Bottom of Unit ....................................
NEC REQUIRED

-- mm (in.)

Between Units, Power Entry Side .............
Unit and Ungrounded Surfaces, Power
Entry Side .............................
Unit and Block or Concrete Walls and Other
Grounded Surfaces, Power Entry Side .........

247.6
[97R]

L,r

REQUIRED

3S6
[14,0]

REAR VIEW

DIA.

@.
il
II
II

FOR SERVICING

--y--

812.5
[31.RN|

BOTTOM

i
OLOWER, CONTROL DOX AND [VAP
ADDERS _ANRL

LEFT SIDE VIEW

COIL

FRONT VIEW

26 57

I D -/

U.O4N]

CONDENSATE DRAIN

UNIT

ELECTRICAL

PAIZ
024
030
036

CHARACTERISTICS
208/230-1-60
208/230-1-60
208/230-1-60, 208/230-3-60
Fig. 2 --

914.0 (36.00)
1066.8 (42.09)
-- mm (in.)
762.0 (30.00)
762.0 (30.00)
914.0 (36.00)
762.0 (30.00)

LEGEND
National Electrical Code

1066.8 (42.00)

NOTES:
1. Clearances must be maintained to prevent recircuIation of air from
outdoor-fan discharge, with the exception of the condenser coil
(914 mm [36 in.]). A removable fence or barricade requires no
clearance.
2. Dimensions are in millimeters. Dimensions in ( ) are in inches.

[_O,NB)
EVAPORATOR

CLEARANCES

Condenser Coil Access Side .................
Power Entry Side .........................
(Except for NEC Requirements)
Unit Top ................................
Side Opposite Ducts .......................

i
DUCT OPENIN6S

NEC

CONI_=NSER
O0_L

CLEARANCES

O
O
0
0

UNIT w'r
Ib
222
236
250
Base

Unit

kg
10!
107
114

CENTER OF GRAVITY -- mm (in.)
X
Y
Z
355.6 (14.00)
355.6 (14.00)
355.6 (!4.00)

Dimensions,

--2--

RIGHT SIDE VIEW

508.0 (20.00)
508.0 (20.00)
508.0 (20.00)

PAIZ024-036

241.3 (9.50)
241.3 (9.50)
241.3 (9.50)

_2940
[II,5?]

REQUIRED

_4080

CLEARANCES

TO COMBUSTIBLE

MAT'L -- mm (in.)

[15,06]

NEC REQUIRED

CLEARANCES

-- mm (in.)

REQUIRED

2476

C9,7S]

356.B

UIA,

[14.ol

DUCTOPENINGS

NEC
J295.0
t_O,98J
BOTTONI 0T UNIT

COIL

1066.8 (42.00)
914.0 (36.00)
1066.8 (42.09)
-- mm (in.)
762.0 (30.00)
762.0 (30.00)
914.0 (36.00)
762.0 (30.00)

LEGEND
National Eiectrical Code

t
f\

FOR SERVICING

L,
REAR VIEW

CLEARANCES

O
O
0
0

\
812.5

131._9]

BOTTON

UNIT

BLOWER, CONTROL BOX AND
EVAPORATORC01L ACCESS PANEL

COMPRESSOR

PAH£

FI[L_
ZNTRY
SERVIC[
PORTS

LEFT SIDE VIEW

UNIT

ELECTRICAL

PA1Z

CHARACTERISTICS

042
048

_R3.5
[2 S0}

FRONT VIEW

208/230-1-60,
208/230-1-60,

208/230-3-60
208/230-3-60

UNIT WT
Ib

297
310

135
141

CENTER OF GRAVITY -- mm (in,)
X
Y
Z
355.6 (14.00)
355.6 (14.00)

Fig. 3 -- Base Unit Dimensions,

--3--

508.0 (20.00)
508.0 (20.00)

PAIZ042,048

304.8 (12.00)
304.8 (12.00)

REQUIRED

_352,r
[BSR]
117.B
[4.B3]

_35Z8

_537
H3.Sfl

CLEARANCES

TO COMBUSTIBLE

MAT'L -- mm (in.)

[Lit3

NEC REQUIRED

CLEARANCES

O
O
0
0

-- mm (in.)

REQUIRED

CLEARANCES

FOR SERVICING

1066.8 (42.00)
914.0 (36.00)
1066.8 (42.00)
-- mm (in.)

76G
IZ?

352.5
;.88)

1
NEC

.44]

762.0 (30.00)
762.0 (30.00)
914.0 (36.00)
762.0 (30.00)

LEGEND
National Electrical Code

REARVIEW

88,9

NOTES:
1. Clearances must be maintained to prevent recirculation of air from
outdoor-fan discharge, with the exception of the condenser coil
(914 mm [36 in.]). A removable fence or barricade requires no
clearance.
2. Dimensions are in millimeters. Dimensions in ( ) are in inches.

]

(3.501

[5038!

O01LFVAPORATOR
_

-I

8_2,5
[31.R9]

BOTTOH

ii
i

_______________________

CONTROL
PANEL

ACCESS

BOX

AND

COIL

EVkP.

68.0
[2.72]

COMPRESSOR

_549.G
[21.GI]

FIELD ENTRY
SERVICE PORTS
[0 8B]
LOW VOLTAGE

POWER ENTRY

(f:)s, °'"X
•

22,2

ENTRY

DIA.

LEFT SIDE VIEW

FRONT VIEW

UNIT

ELECTRICAL

PA1Z

CHARACTERISTICS

060

230-1-60,

208/230-3-60,

460-3-60

_25.4
[I.00]

UNIT vv'r

CENTER

350

159

355.6 (!4.00)

508.0 (20.00)

355.6 (14.00)

Fig. 4 -- Base Unit Dimensions,

--4--

OF GRAVITY -- mm (in.)

PAIZ060

RECEIVING AND INSTALLATION
I. STEP I--CHECK
A. Identify

STEP

3 --

The required
combustibles

EQUIPMENT

Unit

condenser

The unit model number and serial
the unit identification
plate. Check
shipping papers.
B. Inspect

III.

number are stamped
on
this information
against

The

Shipment

leave

all parts

air

condenser

head

To prevent loss or dan]age,
ages until installation.

minimum
are shown
must
fan

CLEARANCES
service
in Fig.

clearances
and clearances
2-4. Adequate
ventilation

to
and

be provided.
pulls

air

through

the

condenser

coil

and

discharges
it through
tire 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 over-

Inspect fox" shipping damage while unit is still oi1 shipping
pallet. If unit appears to be damaged or is torn loose fi'om its
securing points, have it examined by transportation
inspec
tars before removal. Fox,yard claim papers directly to trans
portation
company. Manufacturer
is not responsible
for any
damage incurred
in transit.
Check all items against stripping list. hmnediately
local representative
if any item is missing.

PROVIDE

obstruction.

The

minimmn

hang
(such as a normal
unit top. The maximum
hang

must

not

clearance

under

a partial

over-

house
overhang)
is 48 in. above the
horizontal
extension
of a partial
over-

exceed

48 inches.

notify yotxr

in original

Do not

pack-

place

the

unit

overhang
or roof will
be installed
on wood

II. STEP 2 -- PROVIDE UNIT SUPPORT

ering

where

damage
flooring

water,

ice,

or snow

from

or flood the unit. The unit may
or on Class A, B, or C roof cov

materials.

A. Slab Mount
Place the unit on a rigid, level surface, suitable
to support
the unit weight.
The flat surface should extend approxi
mately 2 in. beyond tire unit casing on the 2 sides. The duct
connection side and condensate
drain connection sides should
be flush with the edge of the flat surface. A concrete pad or a
suitable fiberglass mounting
pad is recommended.

IV. STEP

4 --

Unit

be moved

can

basepan.
caution
rolnaJi1

Refer

PLACE

UNIT

with

to Table

tire

handholds

provided

1 for operating

in the

weights.

unit

U:se extreme

m prevent
(tamaqe
when movJI\_
the unit.
ill all u[)r_q]lt posJHoi1 duriil_
_1]] nlovillg

Unit mu_st
oDer_lHolls.

The unit must
be level for proper
condensate
drainage;
the
ground
level pad must be level before setting
the unit in place.

A 6 in. wide gravel apron should be used around the flat surface to prevent airflow blockage by grass or shrubs. Do not
secure the unit to the flat surface except where required by
local codes.

When a field-fabricated
port is level and that

support
it properly

is used, be sure that
supports
the unit.

the

sup-

The unit should be level to within 1/a inch. This is necessary
for the unit drain to function properly.
Table 1 -- Physical Data
UNIT PAIZ
OPERATING

WEIGHT

COMPRESSOR
REFRIGERANT
Charge (Ibs)
REFRIGERANT

(Ibs)

024

030

036

042

048

060

222

236

250

297

310

350

TYPE
2.8
METERING

[

Reciprocating
R-22
4.7
[
4.4
Acutrol TM System

3.9

DEVICE

CONDENSER COIL
Rows,,.Fins/in.
Total Face Area (sq ft)
CONDENSER-FAN
MOTOR
CFM
Nominal Rpm
Motor Hp
Diameter (in.)
EVAPORATOR COIL
Rows,,.Fins/in.
Total Face Area (sq ft)
EVAPORATOR-FAN MOTOR
Blower Motor Size (in.)
Nominal Cfm
Rpm Range
Number of Speeds
Factory Speed Setting
Motor Hp

1...!7
6.7

1...!7
7.9

1600
825
7_
20

2000
1!00
¼
20

2...15
2.8

3...!5
2.8

10 x 8
800
550-1000
3
Low
¼

10 x 8
1000
550-1000
3
Med
¼

"opper Tubes, Aluminum Plate Fins
2...17
1...17
6.2
11.1
Pro )elier
2000
2600
1100
1100
¼
_¼
20
20

6.1

24 x 24

"460-v motors are 2-speed only.
1-Required filter sizes shown are based on the ARI (Air Conditioning and Refrigeration
of 300 ft!min for throwaway type or 450 ft/min for high capacity type. Recommended

--5--

24 x 24

7.5

2...17
10.7

2600
1!00
¼
20

2800
1100
¼
20

Round
14
14
24 x 24

2...!7
8.6

_opper Tubes, Aluminum Plate Fins
3...15
3...15
3...!5
3.1
3.9
4.3
Direct Drive
10 x 8
10 x 9
10 x 9
!200
1400
1600
800-1050
800-1050
!000-1100
3
3
2
Low
Med
Low
½
_½
%

CONNECTING DUCT SIZES
Supply Air (in.)
Return Air (in.)
FIELD-SUPPLIED RETURN AIR FILTER1"
Throwaway (in.)

4...15
4.9
10 x 10
2000
950-1100
3*
Low
1
Square
!3.9 x !3.9
!3.9 x 27.8

24 x 24

24 x 30

Institute) rated airflow at a velocity
filters are 1-in. thick,

24 x 30

V. STEP 5 -- SELECT AND INSTALL DUCTWORK
The design and installation
accordance
with:

of the duct

system

must

When
designing
following:

be in

• the standards
of the NFPA (National
Fire Protection
Association)
for installation
of nonresidence
type air con
ditioning
and ventilating
systems;
• NFPA 90A or residence-type,
NFPA 90B; and/or local codes
and residence-type,
NFPA 90B;
• and/or local codes and ordinances.

and

installing

ductwork,

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

Select
and
size
ductwork,
supply-air
registers
and
return air grilles according to ASHRAE (American Society of
Heating, Refrigeration,
and Air Conditioning
Engineers)
recommendations.

consider

installed in the
sizes fox"filters

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

Use the duct flanges provided on the supply
and return air
openings on the side of the unit. See Fig. 2 4 for connection
sizes and locations. The 14tin. round duct collars (size 024048 units) are shipped inside the unit attached
to the indoor
blower. They are field-installed
and must be removed fl'om
the indoor cavity prior" to start up, even if they are not used
for" installation.

• Size
mum
listed
tities

To install

units are shipped
on the unit.

with flanges

which

must

unit flanges:

1. Five pieces of flange are shipped on the return air open
ing of the unit. Remove the flanges from the shipping
position. See Fig. 5. Screws are field-supplied.
2. One piece of flange is used as it is shipped
Bend the other 4 pieces at right angles.

(straight).

3. Install
the straight
flange on the right side of the
return air opening in holes provided. See Fig. 6. Flanges
should stick out from unit to allow for connection
of
ductwork.
4. Install 2 hand formed flanges onto return air opening
in holes provided to form a rectangle around the return
air opening.
5. Install
charge

remaining
air opening

6. Ductwork

2 hand-formed
flanges
in holes provided.

can now be attached

around

dis-

HAND

FORM
STRAIGHT

to flanges.
Fig. 6 -- Flanges

PIECE

Installed

on PAIZ060

Units

/
/
/
FIVE PIECES
FLANGE
HERE

DUCT

Fig. 7 --

ATTACHED

FOR

SHIPMENT

Fig. 5 -- Shipping Location of Duct Flanges
(Size 060 Only)

--6--

and
gas-

ductwork
for cooling air quantity
(cfln). The miniair quantity
for proper electric heater operation
is
in Table 2. Heater limit switches may trip at air quanbelow those recommended.

A. Install Flanges for Ductwork Connections (PAIZ060 Only)
The PA1Z060
field-installed

the

Area

Not to be Drilled

than

3/4-in.

• Insulate and weatherproof
all external ductwork. Insulate
and cover with a vapor barrier all ductwork passing through
conditioned
spaces. Follow latest Sheet Metal and Air Con
ditioning Contractors
National Association
(SMACNA) and
Air Conditioning
Contractors
Association
(ACCA) minimum installation
standards
for" residential
heating and air
conditioning
systems.

Condensate

• Secure all ducts to building
structure.
Flash, weatherproof, and vibration-isolate
duct openings in wall or roof
according to good construction
practices.

the trap
it slopes

Figure
8 shows
installed,

a typical

duct

system

with

PA1Z

water

can

be drained

rooftop installations
(where
in ground
level
installations.
densate
drainage.

trap at end of condensate
Make
sure that the

unit

onto

the

roof

or onto a gravel
a field supplied

apron
con

connection
to ensure
proper
outlet
of the trap
is at least

1 in. lower than the drain-pan
vent the pan fl'om overflowing.
with water.
away from

directly

permitted)
Install

condensate
See Fig.

When using
the unit.

connection
to pre9A and 9B. Prime

a gravel

apron,

make

sure

If the installation
requires
draining
fl'om the unit, install
a 2 in. trap

the condensate
water away
using a :_/4 in. OD tubing
or

pipe.
trap

sure that the outlet
of the
the unit drain-pan
conden-

See Fig. 9A and 9B.
is at least
1 in. lower

Make
than

sate connection
to prevent
the pan from overflowing.
Prime
the trap with water.
Connect
a drain
tube using a minimum

INDOOR
THERMOSTAT

of :_/4in. PVC, 3/4 in. CPVC, or :_/4in. copper
pipe (all field sup
plied).
Do not undersize
the tube. Pitch the drain
tube down
ward at a slope of at least 1 in. for every
10 ft 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

SOURCE_

fox" condensate
PVC cement.

trap

connection

are:

Standard

ABS,

CPVC,

1" MIN.
TRAP
POWER AND
LOW VOLTAGI
ENTRY

OUTLET I
DISCONNECTS
PER NEC*
UNIT AND
_LECTRIC

COMPOSITE
RUST-PROOF
BASE PAN
CONDENSATE
DRAIN
CONNECTION

LEGEND

2" MIN.

HEATER)

Fig. 9A --

*Separate
disconnect
per NEC
(National Electrical Code) required
for electric heater when singlepoint connection is not used.

Power Wiring
Control Wiring

t
Condensate

Trap

(Using

Tubing)

Condenser Airflow
TRAP

%
_

Evaporator

Airflow

Fig. 8 -- Typical Installation
1" min.

Table 2 -- Minimum Airflow for Safe Electric
Heater Operation (Cfm)
__OUTLET

024
700

Converting
(Vertical)

036
042
UNIT SIZE PA1Z
1200
!225

030
875

Horizontal

Discharge

048

060

1400

1750

Units

&
I

Fig. 9B -- Condensate

Downflow

Trap (Using PVC Piping)

Discharge

VII. STEP 7 -- INSTALL ELECTRICAL

Units are dedicated side supply products. They are not con
vertible to vertical air supply. A field-supplied
plenum must
be used to convert to vertical air discharge.
Vl. STEP 6 -- PROVIDE FOR CONDENSATE
NOTE: Be sure that condensate
ply with local codes, restrictions,

DISPOSAL

water disposal methods
and practices.

corn

Unit removes condensate
through a lS/t;4-in. ID hole which is
located at the end of the unit. See Fig. 2 4 for" location of con
densate connection.

--7--

CONNECTIONS

Routethermostat
wiresthroughgrmnmet
providinga drip
loopatthepanel.Connect
lowvoltageleadstothethermo
statasshownin Fig.13.
Theunittransformer
supplies
24-vpowerforcomplete
systemincludingaccessory
electricalheater.Transformer
is
facto
W wiredfor230v operation.
If supplyvoltageis 208v,
rewiretransformer
primaryasdescribed
in theSpecial
Pro
cedures
for208-vOperation
section
below.
E. Accessory Electric

Heat Wiring

Refer to accessory electric heat installation
information
on installing
accesso W electric
electric heat wiring is shown in Fig. 14.

instructions
for
heat. Accessory

F. Special Procedures for 208-V Operation

1. Remove wirenut
fl'om connection
of ORG wire to BLK
wire. Disconnect the ORG transformer-primary
lead from
the BLK wire. Save wirenut.
See unit wiring label.
2. Remove the wirenut from tile terminal on the end of the
RED transformer-primary
lead.
3. Save the wirenut.
A.

High-Voltage

The unit
supplied,
sight
mum

a separate
disconnect

from the txnit. Refer
flxse/circuit
breaker

(ampacity)

for wire

The

field

supplied

the

high

voltage

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

Connections

must have
waterproof

to the unit rating
size and minimum

sizing.

See Table

disconnect
inlet

electrical
service
switch
mounted

hole.

may

plate fox" maxicircuit
amps

3 fox" electrical

be mounted

See Fig.

with a field
at, or within

5. Using the wirenut
removed fl'om the RED lead,
late the loose terminal
on the ORG lead.

data.

on the unit

6. Wrap the wirenuts
with electrical
terminals
cannot be seen.

over

2 4.

Routing

Power

Leads

into

the
the

unit
unit,

at the
through

LOW-VOLTAGE
WIRING
ENTRY
HOLE

Unit

Use only copper wire between
disconnect
voltage
leads should
be in a conduit
until
conduit
termination
high voltage
leads

tape so that the metal

Indoor blower motor speeds may need to be changed for 208 v
operation.
Refer to Indoor Airflow and Airflow Adjustments
section on page I4.
HIGH-VOLTAGE
POWER
WIRING
ENTRY
HOLE

and unit. The highthey enter the unit;

unit must be watertight.
the hole on the control

(see Fig. 10 fox" location).
run leads
to the control

When the
box (Fig.

Run the
box side of

leads are inside
ll). For single-

phase
units,
connect
leads to the black and yellow
wires;
for
3-phase
units,
connect
the leads to the black, yellow, and blue
wires
C.

(see Fig.

Connecting

12).
Ground

Lead to Unit

insu

Ground

Refer to Fig. 11 and 12. Connect
the ground
sis using
the unit ground
lug in the control

lead to the
box.

chas
o

D. Routing Control Power Wires

o
=7==

Form a drip loop with the thermostat
leads before routing
them into the unit. Route the thermostat
leads through grom
meted hole provided in unit (see Fig. 10) into unit control box.
Connect thermostat
leads to unit control power leads as shown
in Fig. 13.

,
..............

,9
_,"

:
' 7.

,
/_

Fig. 10 -- Unit Electrical Connection

--8--

o
....................X;:

Entry Holes

Table 3 -- Electrical Data
NOMINAL
VOLTAGE
(V-Ph-Hz)

UNIT
PA1Z
024

208/230-1-60

030

208/230-1-60

VOLTAGE
RANGE
Min
Max
187

187

254

COMPRESSOR

OFM

IFM

ELECTRIC

RLA

FLA

Nominal kW*

10.9

15.2

15.9

LRA
61.0

69.4

86.0

0.9

1.5

208/230-1-60

187

254

8.9

18.5

64.5

97.6

1.5

208/230-1-60

187

254

10.9

21.3

73.0

107.0

1.5

FLA

MCA

MOCP

FLA

LRA

2.4

16.9/ !6.9
25.6/ 29.0
48.1/ 55.1

20/ 20
30/ 30
50/ 60

16/ !6
24/ 27
44/ 51

2.4

--/-3.8/ 5.0
7.5/10.0
11.3/15.0

--/-18.!/20.8
36.1/41.7
54.2/62.5

22
27
51
75

--/-18.!/20.8
36.!/41.7
54.2/62.5
72.2/83.3

30/ 30
30/ 30
50/ 60
80/ got
30/ 30
30/ 30
50/ 60
80/ got
!00/110t
20/ 20
20/ 20
30/ 35
45/ 50
60/ 70t
35/ 35
35t 35
50/ 60
80/ 90t
100/110t
25/ 25
25/ 25
30/ 35
45/ 50
60/ 79t
40/ 40
40/ 40
60/ 60
80/ 90t
100/110t
25/ 25
25/ 25
35/ 40
45t 60
69/ 70t
50
50
60
90t
125t
35/ 35
35t 35
35/ 40
50/ 60
60/ 70t
20
20
20
30
35

22/
24/
44/
65/

--/-3.8/ 5.0
7.5/10.0
11.3/15.0

22.9/ 22.9
25.6/ 29.0
48.1/ 55.1
70.7/ 81.1
24.2/ 24.2
26.1/ 29.5
48.6/ 55.6
71.2/ 81.6
93.6/107.7
15.4/ !5.4
!6.5/ 18.5
29.6/ 33.6
42.6/ 48.6
55.6/ 63.6
27.4/ 27.4
27.4/ 29.5
48.6/ 55.6
71.2/ 81.6
93.8/107.7
17.9/ 17.9
17.9/ 18.5
29.6/ 33.6
42.6/ 48.6
55.6/ 63.6
32.3/ 32.3
32.3/ 32.3
50.4/ 57.3
72.9/ 83.4
95.5/109.4
21.1/ 21.1
21.1/ 2!.1
31.3/ 35.3
44.3/ 50.4
57.4/ 65.4
41.2
41.2
59.8
85.9
111.9
29.7/ 29.7
29.7/ 29.7
33.8/ 37.8
46.8/ 52.9
59.9/ 67.9
15.2
15.2
19.0
26.6
34.1

23/
24/
45/
66/
86/

23
27
51
75
99

15/
15/
27/
39/
51/

!5
17
31
45
59

26/
26/
45/
66/
86/

26
27
51
75
99

107

!7/
17/
27/
39/
51/

17
17
31
45
59

31/ 31
31/ 31
46/ 53
67/ 77
88/101

12!

2.8

4.2

048
208/230-3-60

230-1-60

060

208/230-3-60

460-3-60

187

207

187

414

254

508

12.3

26.9

17.7

9.0

73.0

128.0

63.0

1.5

1.4

0.7

4.2

6.2

3.2

LEGEND
FLA
HACR
IFM
LRA
MCA
MOCP
NEC
OFM
RLA

----------

DISCONNECT
SIZE

--/-18.1/20.8
36.1/41.7

042
208/230-3-60

POWER SUPPLY

--/-3.8/ 5.0
7.5/10.0

036
208/230-3-60

HEAT

15.0/20.0
--/-3.8/ 5.0
7.5/10.0
11.3/15.0
15.0/20.0

--/-10.4/12.0
20.8/24.1
31.3/36.1
41.7/48.1

--/-3.8/ 5.0
7.5/10.0
11.3/15.0

--/-18.!/20.8
36.1/41.7
54.2/62.5
72.2/83.3

15.0/20.0
--/-3.8/ 5.0
7.5/10.0
11.3/15.0
15.0/20.0

--/-10.4/12.0
20.8/24.1
31.3/36.1
41.7/48.1

--/-3.8/ 5.0
7.5/10.0
11.3/15.0

--/-18.!/20.8
36.!/41.7
54.2/62.5
72.2/83.3

15.0/20.0
--/-3.8/ 5.0
7.5/10.0
11.3/15.0
15.0/20.0

--/-10.4/12.0
20.8/24.1
31.3/36.1
41.7/48.1

5.0
10.0
15.0
20.0

20.8
41.7
62.5
83.3

--/-3.8/ 5.0
7.5/10.0
11.3/15.0
15.0/20.0

--/-10.4/12.0
20.8/24.1
31.3/36.1
41.7/48.1

5.0
10.0
15.0
20.0

6.0
12.0
18.0
24.1

EXAMPLE:

Full Load Amps
Heating, Air Conditioning and Refrigeration
Indoor (Evaporator) Fan Motor
Locked Rotor Amps
Minimum Circuit Amps
Maximum Overcurrent Protection
National Electrical Code
Outdoor (Condenser) Fan Motor
Rated Load Amps

21/
21/
29/
41/
53/

21
21
32
46
60

40
40
55
79
103
29/
29/
31/
43/
55/

29
29
35
49
62

15
15
18
24
3!

14!

146

Supply voltage is 460-3-60
AB = 452 v
AC = 455 v

Average
=
BC = 464voltage
v
=

452 + 464 + 455
3
457

Determine maximum deviation from average voltage:
(AB) 457 - 452 = 5 v
(BC) 464 - 457 = 7 v
(AC) 457 - 455 = 2 v
Maximum deviation is 7 v.

*Heater capacity (kW) is based on heater voltage of 208 v, 240 v, or
480 v. If power distribution voltage to unit varies from rated heater voltage, heater kW will vary accordingly.
tFuse or HACR circuit breaker.
NOTES:
1. In compliance with NEC requirements for multimotor and combination load and equipment (refer to NEC Articles 430 and 440), the
overcurrent protective device for the unit shall be fuse or HACR breaker.
2. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in supply voltage is
greater than 2%. Use the following formula to determine the percentage of voltage imbalance.

Determine

percentage of voltage imbalance:
7
= 100 x -457
= !.53%

% Voltage imbalance

This amount of phase imbalance
maximum allowable 2%.

% Voltage Imbalance

is satisfactory

as it is below the

IMPORTANT:
If the supply voltage phase imbalance is more than 2%
contact your local electric utility company immediately.

= 100 x max voltage deviation from average voltage
average voltage

--9--

COMPRESSOR
CONTACTOR

TRANSFORMER

UNIT GROUND
GROUND
-- -- LEAD --

3-PHASE
CONNECTIONS
TO DISCONNECT"
PER NEC

SINGLE-PHASE
LEL--CONNECTIONS
TO DISCONNECT|
PER NEC
LL_-'-_

"BLU--

LEGEND
©

NEC

National Electrical Code
Field Wiring
Splice Connections

NOTE: Use copper wire only.
Fig.

12 --

Line

Power

Connections

o
©

®
ELECTRIC
HEATER
FUSES

GROUND
LUG

INDOOR
FAN
RELAY

OUTDOOR
FAN MOTOR
AND COMPRESSOR
START
CAPACITOR

HIGH
VOLTAGE
LEADS

RED---_

I_3__GRN___

Fig. 11 -- Control Box Wiring

® ]
®

Z:;:___yEL
__
UNIT CONTROL

THERMOSTAT
AND SUBBASE

Fig, 13-

va_
_

___o_.(s__m__:)__
--_! _m,_ 12.
....

TO
UNIT
POWER
tf_IRING

1
1 I
I I

I
I
I

I :ZF-, ,'T--T_- 1

I
I

__tL.J

'_LI'
BI_K"_

[

I I -I'_-

_L_.

Fig. 14 -- Accessory

Electric

--10--

Heater

Wiring

Control Connections

BOX

PRE-START-UP

START-UP
Use the Start-Up
Checklist
and proceed as follows:

supplied

I. CHECK FOR REFRIGERANT
Locate and
follows:

repair

refrigerant

at the end of this book,

LEAKS
leaks

and charge

1. Using both high and low pressure
and reclaim
remaining
refl'igerant
pressure.
2. Repair
NOTE:
opened

leak following

accepted

Install a filter drier
for repair.

3. Check system

for leaks

ports, locate leaks
to relieve system

practices.

whenever
using

tile unit

the system

an approved

4. Evacuate
refi'igerant
system and reclaim
no additional
leaks are found.

has been

method.
refrigerant

5. Charge unit with R-22 refrigerant,
using a volumetriccharging
cylinder or accurate scale. Ret_r ro zmJt roth\q
pie*re _)z"Fequh'ect d_afge. Be sure to add extra refriger
ant to compensate
for internal volume of field installed
filter drier.
II. START-UP COOLING SECTION AND MAKE
ADJUSTMENTS

Use the Start-Up
Checklist supplied at the end of this book
and proceed as follows to inspect and prepare
the unit for
initial start-up:
1. Remove
2. Read

all

access

and

panels.

A. Checking Cooling

instructions

TION, and INFORMATION
with,
unit.
Make

the

Inspect
broken

Inspect

following

labels

all

attached

for shipping
lines,
loose

and
parts,

for oil at all

tubing

oil generally
all refl'igerant

nections

leak

electronic

Inspect
sure

all
that

Inspect

carefldly

the

Make
tioned

and

connections
coilfins.

dling,
3. Verify

field

following

liquid
see

connections.

completed

and

If damaged

during

shipping

straighten

fins

with

tight.
and

han-

a fin comb.
III.

sure that
outdoor-fan
in fan orifice.
Top

blade
is correctly
posiedge of blade
should
be

Make

sure

that

air filter

is in place.

Make

sure

that

condensate

drain

to ensure

proper

filled

with

water

Make
have

sure
been

that all tools
removed.

and

grille.

pan

and

Unit panels
must
charging
procedure.

are

drainage.

miscellaneous

loose

REFRIGERANT

CHARGE

Amount
of refrigerant
refer to Table
1).

See Coil

trap

operation

3. When using an automatic
changeover
room thermostat,
place both SYSTEM and FAN switches in AUTO. positions. Observe that unit operates in Cooling mode when
temperature
control is set to "call for cooling" (below room
temperature).

conditions:

3.125 in. down fl'om condenser
outlet
denser
Fan section
on page 17.

control

2, Place SYSTEM switch in COOL position and FAN switch
in AUTO. position. Set cooling control below room tern
perature.
Observe that compressor,
condenser
fan, and
evaporator blower motors start. Obselwe that cooling cycle
shuts down when control setting is satisfied.

indicates
a
tubing
con

detector,

factory-wiring
are

connections

leak is detected,
Leaks
section.

cooling

1. Place room thermostat
SYSTEM switch in OFF posi
tion. Observe that blower motor starts when FAN switch
is placed in ON position and shuts down when FAN switch
is placed in AUTO. position.

handling
damages
such as
disconnected
wires,
etc.

refl'igerant

Control Operation

Start and check the unit for proper
as follows:

to, or shipped

and on unit base. Detecting
refl'igerant
leak. Leak test
using

CAU

inspections:

soap solution.
If a refrigerant
following
Check for Refrigerant
c.

WARNING,

No Charge

Use

standard

tern, weigh
Table
1).

parts

charge

be in place

evacuating
in the

specified

is listed

when

techniques.
amount

on unit

unit

nameplate

is operating

After

(also

during

evacuating

of refl'igerant

sys
(refer

Low

Use
until

Charge

Cooling

?58

Cooling
Charging
Charts,
Fig.
the conditions
of the appropriate

15 20. Vary refrigerant
chart
are met.
Note

that charging
charts
are different
fl'om the type normally
Charts
are based on charging
the units to the correct
heat
gage

for the various
and temperature

To measure

operating
sensing

suction

1. Connect
the
tion line.

conditions.
device
are

pressure,
pressure

perform
gage

Accurate
required.

the

used.
super621

pressure

following:

to tile seYvice

port

on the

suc

2. Mount
the temperature
sensing
device
on the suction
line and insulate
it so that
outdoor
ambient
tempera
ttlre does not affect
within
the normal

C. To Use Cooling

the reading.
Indoor-air
opei'ating
range
of the

cfm
unit.

must

414

345

27E

Charging Charts

1. Take the outdoor ambient temperature
tion presstlre gage.

and read the suc

2. Refer to appropriate
chart to determine
tion temperature
should be.

what

the suc

30
I

3. If suction temperature
is high, add refi'igerant.
If suc
tion temperature
is low, carefidly recover some of the
charge.
4. Recheck

_60

the suction

pressure

as charge

Fig.

16 --

TEMPERATURE ('E)
I
]

SUCTION

TEMPERATURE ('C)

Cooling

LINE

810

SUCTION LINE
I
b

Charging

Chart

90
t

PAIZ030

is adjusted.

EXAMPLE: (Fig. 15)
Outdoor Temperature
.....................
Suction Pressure
.......................
Suction Temperature
should be .............
(Suction Temperature
may vary _+5 ° F.)

85 F
80 psig
70 F

Ill!!

758

i
i
:

If Chargemaster
¢>charging
device is used, temperature
and
pressure
readings must be accomplished
using the charging
chart.

: :

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Chart -- PAIZ024

--12--

SUCTION LINE
t
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TEMPERATURE (*F)
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Fig. 17 -- Cooling Charging

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Fig. 18 -- Cooling Charging Chart -- PAIZ042

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16
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SUCTION LINE TEMPERATURE ('_)

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--13--

Chart

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IV.INDOOR

AIRFLOW AND AIRFLOW ADJUSTMENTS

VI. SEQUENCE
A.

OF OPERATION

Fan Operation

The FAN switch
oil the thermostat
controls
indoor
fan opera
tion. When
the FAN switch
is placed
in the ON position,
the
IFR (indoor fan relay)
is energized
through
the G terminal

Table 4 shows dry coil air delivery for horizontal discharge
units. Tables 5-7 show pressure drops.
NOTE: Be sure that all supply and return-air grilles are open,
fl'ee fl'om obstructions, and adjusted properly.

Airflow can be changed
the blower motor,

by changing

the lead connections

on the thermostat.
then provide
power
The
ON.

IFM will

The normally-open
contacts
to the indoor (evaporator)
fan

run

continuously

when

tire FAN

close,
motor

switch

which
(IFM).
is set

When the FAN switch is set to AUTO, the thermostat
de_
energizes
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, or if the
unit is equipped
with accessory
electric heat, the indoor
fan motor will also run while he accessory electric heat is
energized.

Units PA1Z024,036,048,
and 060 blower motors are factory
wired for low speed operation.
Units PAIZ030 and 042 are
factory wired for medium speed operation.

NOTE: PA1Z030 and 060 units are equipped
with a timedelay relay. On these units, the indoor" fan remains on for
30 seconds after G or Y is deenergized.

A. For 208/230-V

Tile motor leads

Blower Motors:
are color-coded

as follows:

3 SPEED
black
blue
red

black = high speed
red
= low speed

a 5 minute
Energizing
compressor

To change the speed of the blower motor, remove the fan
motor speed leg lead from the indoor (evaporator)
fan relay
(IFR) and replace with lead for desired blower motor speed.
[i_szllage the relnove(t leact go avoid conflict with ch&ssis parg_s.

Energizing
for" cooling

are color coded as follows:

tire

compressor

the IFR provides
has been satisfed,

power to the IFM. When
the OFM, compressor,

(FAN on AUTO)
are deenergized.
a 30 second
delay, the indoor

contactor

the

through
the Y and G terminals
of the therwith a compressor
time-delay
relay, there
is

(+_ 45 sec) delay
between
compressor
the compressor
contactor
supplies
power
and the outdoor
(condenser)
fan motor

30 seconds
after
units
only).

B. For 460-V Blower Motors:
Tile motor leads

for cooling,

IFR are energized
mostat.
On units

2 SPEED

= high speed
= medium speed
= low speed

Cooling

OIl a call

the

fan

compressor

starts.
to the
(OFM).
the need
and IFM

If the unit is equipped
will remain
energized
is deenergized

(030

and

with
for
060

Heating

2 SPEED
If accessory

black
yellow
purple
red

=
=
=
=

to purple
line
to black
line

the thermostat
tric heaters.
fan
the

To change the speed of the blower motor fl'om low speed to
high speed, remove the red lead fl'om the indoor fan relay (IFR).
Insulate the red lead to avoid contact with any chassis parts,
Separate
the black lead fl'om the purple lead. Connect the
black lead to the IFR. Insulate the purple lead to avoid contact with any chassis parts.
V. UNIT CONTROLS
All compressors
controls.

have

the

A. High-Pressure

Relief Valve

following

internal-protection

between

the

Overload

This overload
interrupts
power to tile
either the current or internal temperature
and automatically
resets when the internal
to a safe level.

heating

heaters

are

installed,

energized
the W relay which
The IFR is energized
which
If the
stage

is satisfied,

oil a call for heat
energizes
the elecstarts
the indoor-

heaters
are staged,
W2 is energized
when
of heating
is required.
When
the need for
the

heater

and

IFM

are

deenergized.

MAINTENANCE
To ensure continuing high performance,
and to reduce the possibility of premature
equipment
faihu'e, periodic mainte
nance must be performed on this equipment.
This cooling unit
should be inspected at least once each year by a qualified serv
ice person. To troubleshoot
cooling of units, refer to Troubleshooting chart in back of book.
NOTE TO EQUIPMENT OWNER: Consult your local dealer
about the availability
of a maintenance
contract.

This valve opens when the pressure
differential
low and high side becomes excessive.
B. Compressor

motor.
second

electric

compressor
when
become excessive,
temperature
drops

This overload may require tip to 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 conti
nuity tester'.

--14--

Table 4 -- Dry Coil Air Delivery* -- Horizontal Discharge
(Deduct 10% for 208 Volt Operation)
230 AND 460 VOLT HORIZONTAL
UNIT
PA1Z

024

030

036

042

AIR
DELIVERY
0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

Low

Watts
CFM

288
875

285
820

282
802

279
734

274
668

268
582

261
478

---

Med

Watts
CFM

390
1131

383
!090

378
1038

369
978

360
9!7

350
830

340
721

---

High

Watts
CFM

528
1391

520
!338

510
1285

495
!200

480
11!5

460
!018

450
920

---

Low

Watts
CFM

288
875

285
820

282
802

279
734

274
668

268
582

261
478

---

Med

Watts
CFM

390
1131

383
1090

378
1038

369
978

360
9!7

350
830

340
721

---

High

Watts
CFM

528
1891

520
1338

5!0
1285

495
!200

480
11!5

460
1018

450
920

---

Low

Watts
CFM

450
1231

435
!218

420
1204

400
!120

380
1008

335
950

328
883

311
75!

Med

Watts
CFM

470
1302

450
1264

445
1205

410
1163

388
1081

359
940

338
873

321
783

High

Watts
CFM

660
1700

635
!660

610
1581

575
1450

540
1297

505
1190

485
1095

460
989

Low

Watts
CFM

478
1303

458
!270

440
1224

4!1
!179

378
1128

350
!022

327
911

317
816

Med

Watts
CFM

481
13!0

468
!280

450
1241

438
!181

404
11!0

370
!022

338
943

320
81!

High

Watts
CFM

---

798
!736

678
1688

647
!618

618
15!0

578
!42!

540
1309

500
!187

46O
1080

Low

Watts
CFM

---

801
1898

760
!84!

730
1757

688
!682

650
1564

600
1429

57O
1365

High

Watts
CFM

---

870
2000

842
!903

818
1799

782
!718

696
1625

632
1446

828
1333

Low

Watts
CFM

890
1834

850
1820

8!0
1791

790
!762

735
1703

880
1640

580
1415

480
1159

422
95O

Med

Watts
CFM

1040
2230

!018
2102

1000
2025

950
!960

890
1901

835
1855

790
1752

850
1468

58O
1!21

High

Watts
CFM

1073
2230

!038
2202

1001
2160

958
2122

896
2052

840
!928

800
1791

691
1588

575
1202

O48

0601

External Static

*Air delivery values are based on operating voltage of 230 v or 460 v,
dry coil, without filter or electric heater. Deduct wet coil, filter, and electric heater pressure drops to obtain external static pressure available
for ducting. See Tables 5-7.
1-460-v motors have 2 speeds (size 060 only).

Table
UNIT SIZE
PAIZ

024

DISCHARGE

MOTOR
SPEED

5 --

Wet

Coil

AIRFLOW
(cfm)
600
700
800
900

Pressure

Table
UNIT SIZE
PAIZ

6 --

024-042

FILTER
SIZE
(in.)
24 x 24

048,060

24 x 30

030

900
1000
1200

0.08
0.06
0.08

UNIT SIZE

036

1000
1200
1400
1600

0.07
0.09
0.11
0.!2

042

1000
1200
1400
1600

0.04
0.08
0.08
0.09

UNIT SIZE
PA1Z

048

1400
1600
1800

0.07
0.08
0.09

060

1700
1800
2100
2300

0.07
0.08
0.09
0.!0

--]5--

0.9

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-coil frosting may occur at airflows below this point.
2. Dashes indicate portions of the table that are beyond the blower
motor capacity or are not recommended.

Drop

PRESSURE DROP
(in. wg)
0.02
0.05
0.08
0.07

(in. wg)

Filter

Pressure

Drop

(in. wg)

CFM
500
0.06

600
0.07

700
0.08

800
0.08

900
0.09

1000
0.09

1100
0.09

PAIZ

FILTER
SIZE
(in.)

CFM
1200

1300

1400

1500

1600

1700

1800

024-042
048,060

24 x 24
24 x 30

0.!0
--

0.!1
0.08

0.12
0.09

0.14
0.10

0.!5
0.11

0.12

0.!3

2000

2100

2200

2300

024-042

FILTER
SIZE
(in.)
1900
24 × 24

048,060

24 x 30

0.15

0.16

0.17

0.!8

0.14

CFM

Table

7 --

Accessory

Electric

Heat

Pressure

Only qualified
service personnel
nance and service procedures
that
Refer" to the following top removal

Drop

(in. wg)

I
I

HEATER
kW

1. Remove
screws.)

530

7 screws

on unit

should perform
mainterequire unit top removal.
procedures:

top cover surface.

(Save

all

2. Remove 2 screws on unit top cover flange. (Save all screws,)

HEATER
kW

3. Lift top fi'om unit carefully. Set top on edge and make
sure that top is supported
by unit side that is opposite
duct (or plenum) side.

5-20

The minimum maintenance
are as follows:

requirenmnts

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.

for" this equipment

1. Inspect air filter(s) each month. Clean or replace when
necessary.
2. Inspect indoor coil, outdoor coil, drain pan, and condm>
sate drain each cooling season for" cleanliness.
Clean
when necessary.

III. EVAPORATOR

BLOWER AND MOTOR

Fox" longer life, operating
economy, and continuing
efficiency,
clean accumulated
dirt and grease from the blower wheel and
motor annually.

3. Inspect blower motor and wheel for cleanliness each cooling season. Clean when necessary. Fox" first heating season, inspect blower wheel bimonthly
to determine proper
cleaning fi'equency.
4. Check electrical connections
for tighmess
and controls
for proper operation each cooling season. Service when
necessary.
5. Check the drain channel
in the top cover periodically
fox"blockage (leaves, insects). Clean as needed.

To clean

the blower wheel:

1. Access

the blower

a. Remove

assembly

top access

as follows:

panel.

b. Remove 3 screws that hold blower orifice ring to blower
housing. Save screws.
c. Loosen setscrew(s) which secure wheel to motor shaft.
2. Remove and clean blower wheel as follows:
a. Lift wheel from housing. When handling and/or clean
ing blower wheel, be sure not to disturb balance weights
(clips) on blower wheel vanes.
b. Remove
a brush.

caked-on dirt from wheel and housing
Remove lint and/or dirt accumulations

with
from

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

c. Reassemble
blower into housing. Place upper orifice
ring on blower to judge location of the blower wheel.
Blower wheel should be approximately
0.2 in. below
bottom of orifice ring when centered correctly. Be sure
setscrews are tightened on motor and are not on round
part of shaft.
d. Set upper orifice ring in place with 3 screws
in Step 1.

Inspect

air

filter(s)

least

once

(throwaway-type)
or clean (cleanable
ing each cooling season
or whenever
with
dust and lint.
Replace
originally

filters

with

provided,

the
when

same

each

month

and

e. Replace

replace

type) at least twice dur
the filters become clogged

dimensional

size

and

type

Inspect the condenser
coil, evaporator
coil, and condensate
drain pan at least once each year. Proper inspection and cleaning requires
the removal of the unit top. See Unit Top
Removal section on thLs [)age.

SIDE)

NOTE: When performing
maintenance
or service
that require removal of the unit top, be sure to
of the routine
maintenance
procedures
that
removal, including coil inspection
and cleaning,
sate drain pan inspection
and cleaning.

panel.

IV. CONDENSER COIL, EVAPORATOR COIL, AND CONDENSATE DRAIN PAN

necessary.

II. UNIT TOP REMOVAL (CONDENSER-COIL

top access

removed

The coils are easily cleaned when dry; therefore,
inspect and
clean the coils either before or after each cooling season.
Remove 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 vacumn cleaner, using a soft brush attachment.
Be carefnl not to bend the fins. If coated with oil or grease,
clean the coils with a mild detergent-and-water
solution. Rinse
coils with clear" water, using a garden [rose. Be careful not to

procedures
perform all
require
top
and conden-

splash
wateronmotors,
insulation,
wiring,orairfilter(s).Fox"
bestresults,spraycondenser
coilfinsfrominsidetooutside
theunit.Onunitswithanouterandinnercondenser
coil,be
suretocleanbetween
thecoils.Besuretoflushall dirt and
debrisfl'omtheunitbase.
Inspect
inspecting

the drain
the coils.

pan
and
condensate
drain
line
Clean the drain pan and condensate

when
drain

motor,
wiring,
or air filter(s).
If the drain
clear it with a "plumbers
snake"
or similar

device.
Ensure
that
tube is also clear.

CONDENSER

the

auxiliary

drain

port

above

the

wiring.

Check

top panel

to locate

all electrical

all the

electrical

connections

tube is
probe
drain

NOTE: Refer to the Sequence
page 14, as an aid in determining

FAN

of Operation
proper control

power

fan height

as shown

5. Tighten

setscrews.

6. Replace

condenser-fan

and the unit base
oil generally
indi-

If oil is detected or if low cooling performance
is suspected,
leak-test
all refrigerant
tubing
using an electronic
leakdetector,
or liquid-soap
solution.
If a refrigerant
leak is
detected,
reDr to Check for Refrigerant
Leaks section on
page 11.

supply.

2. Remove condenser-fan assembly (grille, motor, motor cover,
and faT]) by removing screws and flipping assembly onto
unit top cover.
3. Loosen fan hub setscrews.
4. Adjust

section
on
operation.

CIRCUIT

Inspect all refrigerant
tubing connections
for oil accumulations
annually.
Detecting
cates a refl'igerant
leak.
off unit

and

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.

VII. REFRIGERANT

1. Shut

controls

for tightness.

After inspecting
the electrical controls and wiring, replace all
the panels. Start the unit, and obsmwe at least one complete
cooling cycle to ensure proper operation.
If discrepancies
are
observed in operating cycle, or if a suspected malfunction
has
occurred, check each electrical component with the proper elec
trical instrumentation.
Refer to the unit wiring label when
making these checkouts.

by removing
all foreign
matter
from the pan. Flush
the paT]
and drain
tube with clear water.
Do not splash
water
on the
insulation,
restricted,

Remove

If no refl'igerant
leaks are found and
mance is suspected,
reDr to Refl'igerant
page 11.

in Fig. 21.

assembly.

low cooling perforCharge section on

VIII. EVAPORATOR AIRFLOW
The cooling airflow does not require
checking
unless improper performance
is suspected.
[ta [rFolJlem _xisr_, be _sz11"e
that ai] _szff_Ir{yatrct retzxrir ah" gz'iiies are opeir atrct free [}'am
ob.sgfzlction.s, aird that the oh" _lgez" is clean. WheT] necessary,
reDr to Indoor Airflow and Airflow Adjustments
section on
page 14 to check the system airflow.

3.125 in.

IX. METERING

Fig. 21 -- Condenser-Fan

DEVICES

Refrigerant
metering
devices
are fixed orifices
located in the inlet header to the evaporator
coil.

Adjustment

and

are

X. LIQUID LINE STRAINER
Vl. ELECTRICAL CONTROLS

AND WIRING

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.

Inspect and check the electrical
controls and wiring annually. Be _szl/'e go tzl/'ir off fire electrical [rower go fire zlnir.

--17--

TROUBLESHOOTING
SYMPTOM
Compressor
denser
start.

Compressor
will not
start but condenser
fan runs.

Compressor
cycles
(other than normally
satisfying
thermostat).

operates

Call power company.

Fuse btown or circuit breaker tripped

Replace fuse or reset circuit breaker.

Defective thermostat,
or control retay

Replace component.

Head pressure

Determine cause and correct.

Incorrect or faulty wiring

Check wiring diagram and rewire correctly.

Thermostat

Lower thermostat setting below room temperature.

setting too high

Faulty wiring or loose connections in
compressor circuit
Compressor motor burned out, seized, or
internal overload open

Check wiring and repair or replace.

Defective run/start capacitor, overload,
or start relay

Determine cause and replace.

One leg of 3-phase power dead

Replace fuse or reset circuit breaker.
Determine cause.

Refrigerant overcharge
Defective compressor

Recover refrigerant, evacuate system, and recharge
to capacities shown on nameplate.
Replace and determine cause.

Insufficient line voltage
Blocked condenser

Determine cause and correct.
Determine cause and correct.

Defective run/start capacitor, overload
or start relay

Determine cause and replace.

Defective thermostat

Replace thermostat.

Excessive

suction

pressure.
Suction

pressure

too

low.

or undercharge

motor or capacitor

Locate restriction and remove.
Replace filter.
Decrease load or increase unit size.

for load

set too low

Reset thermostat.

Low refrigerant charge

Locate leak, repair and recharge.

Leaking valves in compressor

Replace compressor.

Air in system

Recover refrigerant,

Condenser

Clean coil or remove restriction.

coil dirty or restricted

evacuate system, and recharge.

Replace filter.
Clean coil.

coil

Refrigerant overcharged

Recover excess refrigerant.

Air in system

Recover refrigerant,

Condenser

Determine cause and correct.

air restricted or air short-cycling

evacuate system, and recharge.

Low refrigerant charge
Compressor valves leaking

Check for leaks, repair, and recharge.
Replace compressor.

Restriction in liquid tube

Remove restriction.

High heat load

Check for source and eliminate.

Compressor

Replace compressor.

valves leaking

Refrigerant overcharged

Recover excess refrigerant.

Dirty air filter

Replace filter.

Low refrigerant charge

Check for leaks, repair, and recharge.

Metering device or Iow side restricted

Remove source of restriction.

Insufficient evaporator

Increase air quantity. Check filter -- replace if
necessary. Check for other evaporator coil obstructions.

Field-installed

1997 Carrier Corporation

Replace.

Dirty air filter
Unit undersized

airflow

Temperature too low in conditioned
Outdoor ambient below 40 F

Determine cause. Replace compressor.

Restriction in refrigerant system

Dirty air filter
Dirty condenser

too low.

contactor, transformer,

Insufficient line voltage

Thermostat

head

REMEDY

Power failure

Faulty condenser-fan

Excessive
pressure.

CHART

CAUSE

and con-

fan will not

Compressor
continuously.

COOLING

filter-drier

restricted

area

Reset thermostat.
Install low-ambient

kit.

Replace.

CATALOG

NO 53PA-1Z0

START-UP
(Remove

I. PRELIMINARY
MODEL

CHECKLIST

and Store in Job File)

INFORMATION

SERIAL NO.:

NO.:

TECHNICIAN:

DATE:

II. PRE-START-UP (insert

checkmark in box as each item is

completed)
LIJ

[] VERIFY THAT ALL PACKING MATERIALS HAVE BEEN REMOVED FROM UNIT

[] VERIFY THAT CONDENSATE
[] CHECK ALL ELECTRICAL

CONNECTION

CONNECTIONS

LIJ

IS INSTALLED PER INSTALLATION INSTRUCTIONS

kb-

O
c3

AND TERMINALS FOR TIGHTNESS

[] VERIFY THAT UNIT INSTALLATION IS LEVEL

[] CHECK FAN WHEEL AND PROPELLER FOR LOCATION 1N HOUSING/ORIFICE
TIGHTNESS

AND SETSCREW

III. START-UP
ELECTRICAL
SUPPLY

VOLTAGE

COMPRESSOR
INDOOR

AMPS

L1-L2

L2-L3

L3-L1
L3

FAN AMPS

TEMPERATURES
OUTDOOR-AIR

TEMPERATURE

RETURN-AIR TEMPERATURE

COOLING SUPPLY AIR
PRESSURES
REFRIGERANT

SUCTION

REFRIGERANT DISCHARGE

LIJ
Z

PSIG

LIJ
F-

[] VERIFY REFRIGERANT

CHARGE USING CHARGING

'O
,el
©
'Z

CHARTS ON PAGES 12 AND ! 3

,q
<
bD

1997 Cartier Corporation

CL 1

CATALOG

NO 53PA-1Z0

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PAYNE Package Units(both Units Combined) Manual L0410505

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