Carrier 39LA-25 - User Manual

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53390030-01 Printed in U.S.A. Form 39L-8SI Pg 1 5-22 Replaces: 39L-7SI
Installation, Start-Up and
Service Instructions
CONTENTS
Page
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 2
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Unit Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
PREINSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . 10
Rigging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Suspended Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Service Clearance . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
External Vibration Isolators . . . . . . . . . . . . . . . . . . . 10
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Base Rail Split . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Mixing Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
• DAMPER ACTUATORS
• DUCTWORK ATTACHMENT
Install Condensate Drain . . . . . . . . . . . . . . . . . . . . . 18
Variable Frequency Drive (VFD) . . . . . . . . . . . . . . . 18
Install Fan Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
• JUNCTION BOX CONDENSATE PREVENTION
• POWER KNOCKOUTS
Motor Nameplate Data . . . . . . . . . . . . . . . . . . . . . . . 19
Fan Motor Starter . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
•WIRING
• START-UP AND TEST
Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
• DISCONNECT WIRING
• START-UP AND TEST
VFD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
•WIRING
• START-UP AND TEST
VFD Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . 26
• START-UP WITH ASSISTANT
• START-UP BY CHANGING PARAMETERS
INDIVIDUALLY
VFD Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
• STANDARD DISPLAY MODE
• PARAMETERS MODE
• CHANGED PARAMETERS MODE
• DRIVE PARAMETER BACKUP MODE
• UPLOAD ALL PARAMETERS
• DOWNLOAD ALL PARAMETERS
• CLOCK SET MODE
• I/O SETTINGS MODE
Install Sheaves on Motor and Fan Shafts . . . . . . . . 28
•ALIGNMENT
Install V-Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
• TENSION MEASUREMENT PROCEDURE
Water and Steam Coil Piping Recommendations . .33
• GENERAL
•WATER COILS
•STEAM COILS
Coil Freeze-Up Protection . . . . . . . . . . . . . . . . . . . . .36
•WATER COILS
•STEAM COILS
• INNER DISTRIBUTING TUBE STEAM COILS
• IDT STEAM COIL PIPING
Refrigerant Piping, Direct-Expansion (DX) Coils . .38
• SUCTION PIPING
• EXPANSION VALVE PIPING
• HOT GAS BYPASS
• UNLOADING CONSIDERATIONS
• SPECIAL PIPING WITH 4 SPLITS PER COIL
Electric Heaters . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
• CONNECT POWER AND CONTROL WIRES
Discharge Modification . . . . . . . . . . . . . . . . . . . . . . .48
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
Check List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
• FILTERS
• FANS
•COILS
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
Fan Motor Replacement . . . . . . . . . . . . . . . . . . . . . .50
Coil Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
• DETERGENT
•STEAM
Winter Shutdown (Chilled Water Coil Only) . . . . . .50
• ANTIFREEZE METHODS OF COIL PROTECTION
• AIR DRYING METHOD OF COIL PROTECTION (UNIT
AND COIL MUST BE LEVEL FOR THIS METHOD.)
Field-Installed Coils (39LA,LD Only) . . . . . . . . . . . .51
Coil Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
• HORIZONTAL UNIT SLANT COIL REMOVAL (39LA
UNITS)
• VERTICAL UNIT SLANT COIL REMOVAL (39LD
UNITS)
• HORIZONTAL OR VERTICAL UNIT — DUAL COIL
REMOVAL (39LA, LD UNITS — SIZE 25)
• HORIZONTAL OR VERTICAL UNIT — VERTICAL
COIL REMOVAL (39LB,LC,LF,LH UNITS)
Changing Coil Hand . . . . . . . . . . . . . . . . . . . . . . . . . .55
•NU-FIN COILS
• DIRECT EXPANSION COILS
• CHILLED WATER AND HOT WATER COILS
• STEAM INNER DISTRIBUTING TUBE COILS
• PIPING
Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
• FILTER SECTIONS
39LA,LB,LC,LD,LF,LG,LH03-25
Indoor Air-Handling Units

Carrier 39LA-25 Specifications