Carrier 39LA Installation, Start-up And Service Instructions Manual

Also see for 39L Series: Installation, Operation, and Start-Up Instructions

Contents

Carrier 39LA Installation, Start-up And Service Instructions Manual Manual pdf 1 page image

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Catalog No. 533-932 Printed in U.S.A. Form 39L-6SI Pg 1 1110 2-04 Replaces: 39L-5SIInstallation, Start-Up andService InstructionsCONTENTSPageSAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . .1INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2,3Unit Identification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2PREINSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7Rigging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4Suspended Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4Service Clearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4External Vibration Isolators . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-29Mixing Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8Inlet Guide Vane Actuators . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Install Fan Motor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11Install Sheaves on Motor and Fan Shafts . . . . . . . . . . . . . .11Install V-Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Water and Steam Piping Recommendations . . . . . . . . . . 14Coil Freeze-Up Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Refrigerant Piping, Direct Expansion(DX) Coils . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Electric Heaters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25Discharge Modification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28START-UP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29,30Check List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30-38General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30Fan Motor Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30Coil Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30Winter Shutdown (Chilled Water Coil Only) . . . . . . . . . . . 30Field-Installed Coils . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31Coil Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31Changing Coil Hand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35Filters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36Fan Shaft Bearing Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . 36Fan and Shaft Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38METRIC CONVERSION CHART . . . . . . . . . . . . . . . . . . . . . . . 39SAFETY CONSIDERATIONSAir-handling equipment is designed to provide safe andreliable service when operated within design specifications. Toavoid injury to personnel and damage to equipment or propertywhen operating this equipment, use good judgment and followsafe practices as outlined below.NEVER enter an enclosed fan cabinet or reach into a unitwhile the fan is running.LOCK OPEN AND TAG the fan motor power disconnectswitch before working on a fan. Take fuses with you andnote removal on tag. Electric shock can cause personalinjury or death.LOCK OPEN AND TAG the electric heat coil power dis-connect switch before working on or near heaters.CHECK the assembly and component weights to be surethat the rigging equipment can handle them safely. Notealso, the centers of gravity and any specific rigginginstructions.CHECK for adequate ventilation so that fumes will notmigrate through ductwork to occupied spaces when weld-ing or cutting inside air-handling unit cabinet or plenum.WHEN STEAM CLEANING COILS be sure that the areais clear of personnel.DO NOT attempt to handle access covers and removablepanels on outdoor units when winds are strong or gustinguntil you have sufficient help to control them. Make surepanels are properly secured while repairs are being made toa unit.DO NOT remove access panel fasteners until fan is com-pletely stopped. Pressure developed by a moving fan cancause excessive force against the panel which can injurepersonnel.DO NOT work on dampers until their operators aredisconnected.BE SURE that fans are properly grounded before workingon them.SECURE drive sheaves with a rope or strap before work-ing on a fan to ensure that rotor cannot free-wheel.DO NOT restore power to unit until all temporary walk-ways inside components have been removed.NEVER pressurize equipment in excess of specified testpressures.PROTECT adjacent flammable material when welding orflame cutting. Use sheet metal or asbestos cloth to containsparks. Have a fire extinguisher at hand and ready forimmediate use.IMPORTANT: The installation of air-handling units and allassociated components, parts, and accessories which makeup the installation and subsequent maintenance shall be inaccordance with the regulations of ALL authorities havingjurisdiction and MUST conform to all applicable codes. Itis the responsibility of the installing contractor to determineand comply with ALL applicable codes and regulations.Field-supplied motors should be Underwriters Laboratories(UL) or Canadian Standards Association (CSA) approved.Field wiring must comply with National Electrical Code(NEC) and all local requirements.39LA,LB,LC,LD,LF,LG,LH03-25Indoor Air-Handling Units