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Installation  Instructions

124ANS

PREFERRED

t

 SERIES AIR CONDITIONER

WITH PURON

r

 REFRIGERANT

1

1/2 TO 5 NOMINAL TONS

Fig. 1

 - 

124ANS

NOTE

:  Read the entire instruction manual before starting the

installation.

TABLE OF CONTENTS

PAGE

SAFETY CONSIDERATIONS

1

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

INSTALLATION

2

3

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Complete Pre

Installation Checks

2

. . . . . . . . . . . . . . . . . . .

Rig and Mount Unit

2

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

Complete Refrigerant Piping Connections

3

. . . . . . . . . . . . .

Make Electrical Connections

3

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

START

UP

4

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SERVICE

4

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

MAINTENANCE

6

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

SAFETY CONSIDERATIONS

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

damage. Consult a qualified installer, service agency, or your

distributor or branch for information or assistance. The 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.
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

thoroughly and follow all warnings or cautions included in

literature and attached to the unit. Consult local building codes and

the current editions of the National Electrical Code (NEC)

NFPA70.
In Canada, refer to the current editions of the Canadian Electrical

Code CSA C22.1.
Recognize safety information. This is the safety

alert symbol 

.

When you see this symbol on the unit and in instructions or

manuals, be alert to the potential for personal injury. Understand

the signal words 

DANGER

WARNING

, and 

CAUTION. 

These

words are used with the safety

alert symbol. 

DANGER 

identifies

the most serious hazards which 

will 

result in severe personal injury

or death. 

WARNING 

signifies hazards which 

could 

result in

personal injury or death. 

CAUTION 

is used to identify unsafe

practices which 

may 

result in minor personal injury or product and

property damage. 

NOTE 

is used to highlight suggestions which

will

 result in enhanced installation, reliability, or operation.

!

WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury

or death.
Before installing, modifying, or servicing system, main

electrical disconnect switch must be in the OFF position.

There may be more than 1 disconnect switch. Lock out and

tag switch with a suitable warning label.

ENVIRONMENTAL HAZARD

Failure to follow this caution may result in environmental

pollution.
Remove and recycle all components or materials (i.e. oil,

refrigerant, etc.) before unit final disposal.

CAUTION

!

Summary of Contents for PREFERRED 124ANS

Page 1: ...teratureand attached to the unit Consult local building codes and the current editions of the National Electrical Code NEC NFPA70 In Canada refer to the current editions of the Canadian Electrical Code CSA C22 1 Recognize safety information This is the safety alert symbol When you see this symbol on the unit and in instructions or manuals be alert to the potential for personal injury Understand th...

Page 2: ...n coil side and coil end and 20 504 0 mm minimum clearance on fan side Allow 24 609 6 mm minimum clearance on compressor end for service With fan facing wall Allow 8 203 2 mm minimum clearance on fan side and coil end and 20 504 0 mm minimum clearance on coil side Allow 24 609 6 mm minimum clearance on compressor end for service when units are stacked or there is less than 40 1016 mm of clearance ...

Page 3: ... system is exposed to the atmosphere Only use factory specified liquid line filter driers with rated working pressures less than 600 psig NOTE Do not install a suction line filter drier in liquid line Make Piping Sweat Connections EXPLOSION HAZARD Failure to follow this warning could result in death serious personal injury and or property damage Never use air or gases containing oxygen for leak te...

Page 4: ...hed indoor unit START UP PRELIMINARY CHECKS 1 Check that all internal wiring connections are tight and that all barriers covers and panels are in place 2 Field electrical power source must agree with unit name plate rating 3 All service valves must be open 4 Belly band crankcase heater must be tight on compressor crankcasefor those units with belly band heaters EVACUATE AND DEHYDRATE Field piping ...

Page 5: ...accepted heat sink material on the valve before brazing The service valve cannot be field repaired therefore only a complete valve or valve stem seal and service port caps are available for replacement Refrigerant Charging WARNING PERSONAL INJURY AND OR EQUIPMENT DAMAGE HAZARD Failure to follow this warning could result in personal injury and or equipment damage Wear safety glasses and gloves when...

Page 6: ...d outdoor temperatures are in a more favorable range NOTE If line length is beyond 80 ft 24 38 m or greater than 20 ft 6 10 m vertical separation See Residential Piping and Long Line Guideline for special charging requirements MAINTENANCE WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death Before installing modifying or servicing system main elec...

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