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035-18496-000-C-1102
2 UnitaryProductsGroup
TABLE OF CONTENTS
GENERAL ......................................4
NOTES, CAUTIONS AND WARNINGS . . . . . . . . . . . . . . . .4
REPLACEMENTPARTS ...........................4
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
LIMITATIONS..................................4
INDOOR PRODUCT NOMENCLATURE . . . . . . . . . . . . . . .5
BLOWERMOTORMOUNTINGLOCATIONS.........7
LA300/LB360/LB480MOTORMOUNTING............7
LB600MOTORMOUNTING .......................7
MOTORMOUNTARRANGEMENTS ...............8
LA300/LB360/LB480 MOTOR ARRANGEMENTS . . . . . . 8
ADDITIONAL MOTOR ARRANGMENTS FOR
LA300/LB360/LB480 ............................8
LB600MOTORARRANGEMENTS..................9
RE-LOCATING THE LB600 MOTOR MOUNTING PLATE 9
ALTERNATEPOSITIONONE......................9
ALTERNATEPOSITIONTWO .....................9
ALTERNATEPOSITIONTHREE ...................9
AIRDISCHARGECONVERSION ..................9
LA360/LB360/LB480 AIRDISCHARGE ..............9
LB600AIRDISCHARGE .........................11
UNITINSTALLATION ............................11
LOCATION...................................11
RIGGING ....................................11
CLEARANCES................................11
MOUNTING ..................................12
DUCT CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . .15
INSULATION ..................................15
SUPPLY AIR DUCTS . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
RETURN AIR DUCT ANGLES . . . . . . . . . . . . . . . . . . . .16
DRAINCONNECTIONS .........................16
REFRIGERANTMAINS .........................16
EVAPORATORSECTIONPIPING .................17
EXPANSION VALVE BULB INSTALLATION . . . . . . . . .17
LA300........................................17
LB360/LB480/LB600 ............................17
LIQUIDLINESOLENOIDS .......................17
PUMPOUT ...................................18
BEARING ALIGNMENT: LB600 . . . . . . . . . . . . . . . . . . .18
AIR SYSTEM ADJUSTMENT . . . . . . . . . . . . . . . . . . . .18
TWINBELTDRIVEADJUSTMENT................18
ELECTRICALCONNECTIONS ...................19
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
LIST OF FIGURES
Fig.# Pg.#
1 LA300 AND LB360/LB480 FACTORY MOTOR
MOUNTINGPOSITION ........................7
2 LB600 FACTORY MOTOR MOUNTING POSITION . . 7
3 LB600MOTORMOUNTPLATE..................7
4 LA300/LB360/LB480 MOTOR LOCATION A . . . . . . . . 8
5 LA300/LB360/LB480 MOTOR ARRANGEMENTS . . . . 8
6 VERTICAL AIRFLOW ARRANGEMENTS . . . . . . . . . 10
7 HORIZONTAL AIRFLOW ARRANGEMENTS . . . . . . 10
8 LB600AIRFLOWARRANGEMENTS.............11
9 DETAILS FOR SECURING BOTTOM MOUNTING
SUPPORTS ................................13
10 LA300/LB480/LB360 WEIGHT DISTRIBUTION . . . . 13
11 LB600 WEIGHT DISTRIBUTION WITH SUSPENSION
APPLICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
12 DETAILS FOR SECURING SUSPENSION
CHANNELS ................................15
13 SUGGESTED METHOD FOR CONNECTING
DUCTWORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
14 RECOMMENDEDDRAINPIPING ...............16
15 LB600 CENTER BEARING . . . . . . . . . . . . . . . . . . . . . 18
16 DOUBLEGROOVEPULLEY ...................18
17 UNIT DIMENSIONS - LA300, LB360, LB480 . . . . . . . 22
18 25TONLIQUIDLINESOLENOIDWIRING ........22
19 30, 40 & 50 TON LIQUID LINE SOLENOID
WIRING....................................22
20 LA300PIPINGCONNECTIONS.................23
21 LB360PIPINGCONNECTIONS.................23
22 LB480PIPINGCONNECTIONS.................23
23 UNITDIMENSIONS ..........................24
24 LB600 PIPING CONNECTIONS - END PANEL
DETAIL ....................................24
25 HOLE LOCATION FOR PRESSURE DROP
READING ..................................25
26 25-TON PRESSURE DROP VS. CFM ACROSS
INDOORCOIL ..............................26
27 30-TON - PRESSURE DROP VS. CFM ACROSS
INDOORCOIL ..............................26
28 40 TON - PRESSURE DROP VS. CFM ACROSS
INDOORCOIL(DOMESTIC) ...................27
29 50 TON - PRESSURE DROP VS. CFM ACROSS
INDOORCOIL ..............................27
30 INDOOR UNIT WIRING DIAGRAM LB360,
480&600 ..................................28
31 INDOORWIRINGDIAGRAMLA300 .............29