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036-21335-002-A-1102

FOR DISTRIBUTION USE ONLY - NOT TO BE USED AT POINT OF RETAIL SALE

TECHNICAL GUIDE

SPLIT-SYSTEM AIR-COOLED

EVAPORATOR BLOWER

25, 30, 40 & 50 TON

LA300, LB360, 480 & 600

® 

1

This product was manufactured in
a plant whose quality system is 
certified/registered as being 
in conformity with ISO9001.

PROVEN PERFORMANCE

GENERAL

The LA/LB line is a flexible performer. LA300, LB360 & 480
can be positioned in up to 12 different positions and sus-
pended in various positions. The LB600 can be positioned in
up to 7 different arrangements and suspended also. The LA/
LB line will give you the power to condition large amounts of
building space and the ability to conform to almost any situa-
tion.

FEATURING

EASE OF SERVICE

PUMP-OUT ON START-UP

BASE SECTIONS (25, 30 & 40 Ton only)

SUSPENSION PACKAGES

HOT WATER COILS

STEAM COILS (LA300 & LB360 only)

WIDE RANGE OF BLOWER MOTORS

A VARIETY OF DRIVE PACKAGES

CONTROL BOX WITH LOW VOLTAGE TRANS-
FORMER AND MOTOR STARTER (motor, motor drive
kit and motor overloads sold separately).

Summary of Contents for 480

Page 1: ...in up to 12 different positions and sus pended in various positions The LB600 can be positioned in up to 7 different arrangements and suspended also The LA LB line will give you the power to conditio...

Page 2: ...4 STEAM COIL DIMENSIONS 14 15 BASE SECTION DIMENSIONS 14 16 BLOWER CURVE LA300 LB360 19 17 BLOWER CURVE LB480 21 18 BLOWER CURVE LB600 22 LIST OF TABLES Tbl Pg 1 STATIC RESISTANCES FOR UNIT ACCESSORIE...

Page 3: ...n Options L Product Category L Air Handling Unit Cooling F Air Handling Unit Heat Pump A Product Identifier A R 22 Standard Efficiency 2 Pipe B R 22 Standard Efficiency 4 Pipe 300 Nominal Cooling Capa...

Page 4: ...Each unit is available with a choice of blower motors drive packages and other accessories to make them suitable for most applications FACTORY MOUNTED COMPONENTS PART LOAD OPERATION These evaporator b...

Page 5: ...erload protection DRIVE PACKAGES Different size pulleys and belts are available for each unit to provide a blower RPM range to meet almost any air delivery requirement Variable pitch motor pulleys can...

Page 6: ...SUSPENSION ANGLES 1 BLOWER SECTION EVAP COIL SECTION CX 1 2 3 3 The same channels can be used in either position W hen used to support at vertical unit these channels should be cut to match the botto...

Page 7: ...5 STEAM COIL 1 ROW 30 30 35 50 1 These weights should be added to each point load in table 3 2 This accessory can only be applied on units installed in the vertical position TABLE 5 UNIT BLOWER MOTOR...

Page 8: ...3 8 12 4 1 3 16 2 78 6 B78 1LD0412 762 931 5 4 6 6 1 5 8 12 4 1 3 16 2 76 8 B75 TABLE 7 MOTOR OVERLOAD ELEMENTS1 1 These units are equipped from the factory with a cor rectly sized motor starter over...

Page 9: ...05 495 585 675 LB480 1HW0407 75 12 800 348 447 547 646 746 16 000 389 500 611 722 833 19 200 425 547 668 790 911 LB600 75 16 000 389 500 611 722 833 20 000 436 561 686 810 935 24 000 473 610 746 882 1...

Page 10: ...330 8 000 535 483 432 380 10 000 592 535 478 422 12 000 642 580 518 456 LB360 8 000 535 483 432 380 10 000 592 535 478 422 12 000 642 580 518 456 14 000 687 621 555 489 1 These capacities do not inclu...

Page 11: ...ngs for piping and drain connections on following pages EVAPORATOR SECTION TABLE 12 UNIT DIMENSIONS LA300 LB360 LB480 MODEL A B C D E F G H J K L M LA300 100 1 8 95 5 8 33 1 4 36 5 8 74 2 1 2 18 7 8 1...

Page 12: ...LB480 PIPING CONNECTIONS TABLE 13 UNIT CONNECTION SIZES Connection Entry Connection Size LA300 LB360 LB480 LB600 M2CX600 Suction Line Sys 1 2 1 8 1 1 8 1 3 8 2 1 8 Suction Line Sys 2 N A 1 1 8 1 3 8 2...

Page 13: ...oup 13 FIGURE 11 UNIT DIMENSIONS LB600 FIGURE 12 LB600 PIPING CONNECTIONS END PANEL DETAIL 6 7 13 5 6 0 2 1 3 0 10 1 23 86 3 0 3 8 Liquid Line Sys 2 4 0 24 0 13 5 4 7 Liquid Line Sys 1 Condensate Drai...

Page 14: ...AM COIL DIMENSIONS1 COIL MODEL UNIT MODEL DIMENSIONS A B C D E F G 1NF0454 LA300 LB360 100 1 8 37 7 8 4 3 8 18 3 8 1 1 2 2 2 1 2 1 Coils are field installed between the evaporator coil and the blower...

Page 15: ...18 20 x 18 FILTERS THROWAWAY Size and Quantity Per Model Inches 16 x 20 x 2 6 20 x 20 x 2 3 20 x 22 x 2 16 x 25 x 2 6 20 x 25 x 2 10 6 3 25 x 25 x 2 6 Total Face Area feet2 34 7 42 6 53 1 OPERATING C...

Page 16: ...hipping Weight lbs 1180 1180 1510 1572 Operating Weight lbs 1125 1146 1426 1640 Accessories Hot Water Coil 150 150 190 190 Steam Coil 160 160 Blower Motor 1750 RPM 117 5hp 117 5hp 120 7 5hp 120 7 5hp...

Page 17: ...1 460 14 20 9 575 11 20 LB360 5 0 16 7 208 21 35 15 2 230 19 30 7 6 460 10 15 6 1 575 8 15 7 5 24 2 208 30 50 22 230 28 45 11 460 14 20 9 575 11 20 10 30 8 208 39 60 28 230 35 60 14 460 18 30 11 575 1...

Page 18: ...ce units with steam or hot water coils are the only exception On these units the BHP must not exceed the nominal HP rating of the motor TABLE 20 FAN PERFORMANCE DATA 30 TON1 RPM CFM 10 000 11 000 12 0...

Page 19: ...70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 LA300 LB360 Available external static pres sure for unit accessories and the duct system Internal unit resistance based on a dry coil...

Page 20: ...e accessory static resistance table for additional information TABLE 22 FAN PERFORMANCE DATA 50 TON1 RPM CFM 16 000 18 000 20 000 22 000 24 000 SP2 BHP KW SP2 BHP KW SP2 BHP KW SP2 BHP KW SP2 BHP KW 6...

Page 21: ...ternal unit resistance based on a dry coil plus 2 throwaway filters 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 3 2 3 0 2 8 2 6 2 4 2 2 2 0 1 8 1 6 1 4 1 2 1 0 0 8 0 6 0 4...

Page 22: ...360 1 6 B H P 1 4 B H P 1 2 B H P 1 0 B H P 8 B H P 6 B H P 500 RPM 600 RPM 700 RPM 800 RPM 900 RPM 3 2 3 0 2 8 2 6 2 4 2 2 2 0 1 8 1 6 1 4 1 2 1 0 0 8 0 6 0 4 0 2 0 AvaIlable external static pres sur...

Page 23: ...s of 18 gauge steel finished with baked enamel to provide a long lasting quality appearance Removable panels to provide easy access to the internal components for maintenance and service and A filter...

Page 24: ...o change without notice Printed in U S A 036 21335 002 1 1102 Copyright by Unitary Products Group 2002 All rights reserved Supersedes 036 21335 001 B 0202 Unitary 5005 Norman Products York OK Group Dr...

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