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INSTALLATION 
MANUAL

CAUTION:

READ ALL SAFETY GUIDES BEFORE YOU 
BEGIN TO INSTALL YOUR UNIT.

SAVE THIS MANUAL

MODEL: LA120

(AIR COOLED)

SPLIT-SYSTEM

AIR CONDITIONER 

035-18525-001-B-0203

CONTENTS

NOMENCLATURE   . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3

GENERAL  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

SAFETY CONSIDERATIONS  . . . . . . . . . . . . . . . . . . . . .  4

AGENCY APPROVALS   . . . . . . . . . . . . . . . . . . . . . . . . .  4

INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  4

INSTALLATION   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6

MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  16

NOTES, CAUTIONS AND WARNINGS

Installer should pay particular attention to the words:

NOTE

CAUTION

, and 

WARNING

. Notes are intended to

clarify or make the installation easier. Cautions are given
to prevent equipment damage. Warnings are given to
alert installer that personal injury and/or equipment dam-
age may result if installation procedure is not handled
properly.

Содержание LA120

Страница 1: ...IONS 4 AGENCY APPROVALS 4 INSPECTION 4 INSTALLATION 6 MAINTENANCE 16 NOTES CAUTIONS AND WARNINGS Installer should pay particular attention to the words NOTE CAUTION and WARNING Notes are intended to c...

Страница 2: ...ION 8 4 SUPPLY AIR PLENUM ACCESSORY 9 5 BASE ACCESSORY VERTICAL ONLY 9 6 RECOMMENDED DRAIN PIPING 10 7 RETURN AIR GRILLE ACCESSORY VERTICAL 10 Fig Pg 8 FIELD WIRING DIAGRAMS FOR POWER SUPPLY 12 9 FIEL...

Страница 3: ...tandard Efficiency 2 Pipe B R 22 Standard Efficiency 4 Pipe 120 Nominal Cooling Capacity MBH 090 7 1 2 Ton 120 10 Ton 150 12 1 2 Ton 180 15 Ton 240 20 Ton C Heat Type C Cooling Only 00 Nominal Heating...

Страница 4: ...on this equipment The forms referenced in this instruction may be ordered from Standard Register 2101 West Tecumseh Road Norman Oklahoma 73069 Toll Free TEL 877 318 7920 Toll Free FAX 877 379 7920 Thi...

Страница 5: ...provided in the filter rack Qty Size in 6 20 X 20 X 1 Face Area Sq Ft 16 7 Operating Charge Refrigerant 22 Lbs Oz 5 8 Weight Lbs Shipping 439 Operating 399 Accessory Weights Lbs Electric Heaters 10 K...

Страница 6: ...e suspended from above as shown in Figure 1 Refer to Form 035 16622 001 for more information on the installation of the suspension accessory and for the individual load on each hanger rod A field adde...

Страница 7: ...illips machine bolts that hold the coil and blower sections together A bolt is located near each corner 3 Move the blower section to the proper location 4 Attach the blower section to the coil section...

Страница 8: ...CCESS OPENING FOR POWER SUPPLY WIRING 1 2 WIRING HARNESS LOCATION This opening in the bottom of the heater control box is used for the wiring harness that connects the heater accessory to the basic un...

Страница 9: ...n and a sealing material such as permagum should be packed around refrigerant lines where they penetrate a wall to reduce vibration and to retain some flexibility Support all refrigerant lines at mini...

Страница 10: ...ith these codes Route the power wires into the unit through one of the 7 8 knockouts in the panel with the supply air opening and connect them to the terminals on blower motor contactor 10M Route the...

Страница 11: ...t is made by moving the blower motor mount ing plate Refer to Figure 7 Turning the adjustment bolt B moves the motor mounting plate up or down Note Never loosen the tow nuts C Two hex nuts A have to b...

Страница 12: ...orator coil may vary greatly measuring the pressure drop across a wet coil under field conditions would be inaccurate To assure a dry coil the refrigerant system should be de activated while the test...

Страница 13: ...Motor Blower HP Blower RPM Adjustable Motor Pulley Fixed Blower Pulley Belt Pitch Dia Inches Bore Inches Pitch Dia Inches Bore Inches Designation Pitch Lg Inches LA120 2 549 716 3 1 4 1 7 8 9 5 1 A55...

Страница 14: ...ing air stream upstream of any heating device Units with steam or hot water coils are the only exception LA120 3000 3500 4000 4500 5000 5500 6000 6500 7000 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 1 1 1...

Страница 15: ...1 9 1 0 2 1 8 2 5 8 K N O C K O U T F O R 1 5 8 O D S U C T I O N C O N N 3 2 3 8 1 8 7 8 6 5 1 2 5 7 8 B L O W E R S E C T I O N 7 1 4 1 6 1 2 7 8 1 9 3 8 2 1 7 8 6 0 3 4 B L O W E R M O T O R A N D...

Страница 16: ...LUBRICATION The bearings for the blower shaft and the blower motors are permanently lubricated and should not require additional lubricant BELTS Maintain belt tension to extend belt life Replace when...

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