Page 1
®
036-21335-002-A-1102
TECHNICAL GUIDE
SPLIT-SYSTEM AIR-COOLED
EVAPORATOR BLOWER
25, 30, 40 & 50 TON
LA300, LB360, 480 & 600
PROVEN PERFORMANCE
GENERAL
The LA/LB line is a flexible performer. LA300, LB360 & 480
canbepositionedinupto12differentpositionsandsuspended 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 situation.
FEATURING
• EASE OF SERVICE
•PUMP-OUTONSTART-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 TRANSFORMER AND MOTOR STARTER (motor, motor drive
kit and motor overloads sold separately).
This product was manufactured in
a plant whose quality system is
certified/registered as being
in conformity with ISO9001.
FOR DISTRIBUTION USE ONLY - NOT TO BE USED AT POINT OF RETAIL SALE
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036-21335-002-A-1102
TABLE OF CONTENTS
DESCRIPTION .............................4
MODULARDESIGN .........................4
FACTORY-MOUNTEDCOMPONENTS ..........4
ACCESSORIES.............................4
GUIDESPECIFICATIONS ...................23
LIST OF FIGURES
Fig. Pg.
1 PRODUCTNOMENCLATURE.................3
2 UNITINSTALLATION ........................4
3 DETAILS FOR SECURING BOTTOM MOUNTING
SUPPORTS ................................6
4 LA300/LB360 WEIGHT DISTRIBUTION . . . . . . . . .6
5 UNIT DIMENSIONS - LA300, LB360 & LB480 . . . .11
6 25 TON LIQUID LINE SOLENOID
WIRING ..................................11
7 30, 40 & 50 TON LIQUID LINE
SOLENOIDWIRING ........................11
8 LA300PIPINGCONNECTIONS ...............12
9 LB360PIPINGCONNECTIONS ...............12
10 LB480PIPINGCONNECTIONS ...............12
11 UNITDIMENSIONS-LB600..................13
12 LB600 PIPING CONNECTIONS - END PANEL
DETAIL...................................13
13 HOTWATERCOILDIMENSIONS .............14
14 STEAMCOILDIMENSIONS..................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 ACCESSORIES . 5
2 UNITMOUNTINGDIMENSIONS.................5
3 CORNERWEIGHTS...........................7
4 ACCESSORY OPERATING WEIGHT DISTRIBUTION
(LBS) .....................................7
5 UNITBLOWERMOTORDATA ..................7
6 UNITDRIVEDATA ...........................8
7 MOTOROVERLOADELEMENTS................8
8 HOT WATER COIL CAPACITIES. . . . . . . . . . . . . . . . . 9
9 CAPACITY CORRECTION & PRESSURE DROP
VSGPM ...................................9
10 STEAM COIL CAPACITIES (LA300 & LB360 ONLY) 10
11 CORRECTION FACTORS FOR HIGH STEAM . . . . . 10
12 UNIT DIMENSIONS - LA300, LB360 & LB480 . . . . . 11
13 HOTWATERCOILDIMENSIONS...............14
14 STEAMCOILDIMENSIONS ...................14
15 BASE SECTIONS DIMENSIONS . . . . . . .. .. . . . . . . 15
16 PHYSICALDATA............................16
17 ELECTRICALDATA..........................17
18 FAN PERFORMANCE DATA (25TON) . . . . . . . . . . . 18
19 FAN PERFORMANCE DATA (30TON) . . . . . . . . . . . 18
20 FAN PERFORMANCE DATA (40TON) . . . . . . . . . . . 20
21 FAN PERFORMANCE DATA (50TON) . . . . . . . . . . . 20
2 Unitary Products Group
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036-21335-002-A-1102
YORK SPLIT INDOOR PRODUCT NOMENCLATURE
L
A 300 C 00 A 6 A AA 1 A
Model #
Model Number
Description
Options
L Product Category L = Air Handling Unit - Cooling F = Air Handling Unit - Heat Pump
A Product Identifier
Nominal Cooling
300
Capacity
MBH
A =R-22 Standard Efficiency 2-Pipe
B =R-22 Standard Efficiency 4-Pipe
300 = 25 Ton
360 = 30 Ton
480 = 40 Ton
600 = 50 Ton
C Heat Type C = Cooling Only
Nominal Heating
00
Capacity
00 = No Heat Installed
A Airflow Options A=None
6 Voltage
0=None
5 = 575-3-60
6 = 208/230-460-3-60
A Factory Options A=None
AA Special Options AA = None
1 Product Generation 1 = First Generation 2 = Second Generation
FIGURE 1: PRODUCT NOMENCLATURE
NOTE: LB600 matches with both HB480 and HB600
Outdoor Condensing Units for maximum efficiency.
NOTE: LB480 Indoor and HB480 Outdoor Units do
match up,but do not meet ASHRAE 90.1 standards for efficiency.
Unitary Products Group 3
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036-21335-002-A-1102
DESCRIPTION
Evaporator blower units are designed with two distinct modules to provide maximum application flexibility. The 25, 30
and40tonunitsareshippedassinglepackageswiththe
blower module mounted on top of the coil module, The
blower module can be repositioned in the field to meet almost
any installation requirement. Blower and coil modules for the
50 ton units are shipped separately to simplify handling.
These modules can be connected in the field with the same
flexibility as thesmaller units.
The blower module includes the blower wheels and room for
a field-mounted motor and drive. The coil module includes
direct expansion coils, 2 in. throwaway filters, liquid line solenoid valves for both capacity reduction and pumpdown, thermal expansion valves, distributors and a condensate drain
pan.
Every evaporator coil is pressurized with air to 325 psig and
leak tested under water. After the headers are brazed onto
the coil and the coil is installed in the unit, the coil is pressurized with a combination of Refrigerant-22 and nitrogen to 150
psig for pressure testing and additional leak testing. After the
coil is evacuated and dehydrated, it is pressurized with a
holding charge of Refrigerant-22 for storage and/or shipping.
Steamcoils, hot water coils, base sections, suspension hardware, blower motors and drive packages are available as
field-installed accessories to provide additional application
flexibility.
These evaporator blowers, combined with condensing units,
provide years of quiet, efficient and dependable operation.
These units are manufactured under ISO 9001 Quality System Certification.
For Indoor Unit Installation details,please see document 03518496-000.
MODULAR DESIGN
These evaporator blowers can bearranged for a variety o f air
discharge patterns in either the horizontal or vertical position.
Figure 2 shows three of the common installation arrangements. Refer to the unit installationinstructions for otherpossibilities.
Units may be bottom-supported or ceiling-suspended and
can be arranged to meet almost any space or duct requirements. 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 blowers have
multiple coils with pre-piped distributors, expansion valves
and solenoid valves. Field modifications are not required for
part load operations. Capacity reduction not only provides
economical operation, but also maintains more even temperature and humidity levels in the conditioned space.
EASY SERVICE Serviceable expansion valves are provided
on every unit. These superior valves are factory-installed to
provide many years of trouble-free operation. If service is
required, it is not necessary to unbrazeany joints.
PUMP-OUT Evaporator blowers include a solenoid valve for
non-recycling pump-out. When a cooling requirement in the
conditioned space is needed, the refrigerant is pumped into
the high side of the system before unit start-up.
ACCESSORIES
BASE SECTIONS (25, 30 and 40 ton only: Base sections
can be used to elevate units above the floor. If desired, outdoor air may be introduced through these sections by cutting
an access opening to accommodate the outdoor air duct connection. These bases have a durable finish to match the
evaporator blower unit. They may have to be insulated for
certain applications.
SUSPENSION PACKAGES:
to suspend horizontal units from above without interfering
with access to the unit. They can also be used for elevating a
floor-mounted unit (either horizontal or vertical) to provide
additional height for the installation of a trap at the condensate drain connection. All suspension packages can be used
with vibration isolators.
These accessoriescan be used
FIGURE 2: UNIT IN STALLATION
4 Unitary Products Group
HOT WATER COILS:
field installation between the blower and the coil modules of
both horizontal and vertical units. Since their casings match
the dimensions and the finish of the basic units, they become
an integral part of the unit after installation. The coils slide out
of their casings for easy installation. Coils have c opper tubes
that have been mechanically expanded into aluminum fins.
Both headers are located on the same end of the coil. Coils
are leak-tested at 325psig under water and dried before their
connections are capped for storage and shipping.
Drainable water coils are available for
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036-21335-002-A-1102
STEAM COILS (LA300 & LB360 only): A steam coil is available on the 25 & 30 Ton for installation between the blower
rounding space. 5 HP motors are inherently protected. 7.5
HP - 15 HP require motor overload protection.
and coil modules of both horizontal and vertical units. Since
the casing matches the dimensions and the finish of the basic
unit, it becomes an integral part of the unit after installation.
The coil slides out of the casings for easy installation and is
pitched in the casings to facilitate condensate drainage. The
coil has copper tubes that have been mechanically expanded
into aluminum fins. Both headers are located on the same
end of the coil. The coil is leak-tested at 325 psig and dried
before the connections are capped for storage and shipping.
BLOWER MOTORS:
Different HP motors are available for
each unit to m eet almost any air delivery requirement. All
motors are UL approved, have permanently lubricated ball
bearings and are field-mounted within the insulated cabinet of
DRIVE PACKAGES:
available for each unit to provide a blower RPM range to
meet almost any air delivery requirement. Variable pitch
motorpulleyscanbeadjustedtoprovidetheproperblower
RPM. All drive packages are rated at least 25% above the
nominal HP rating of the blower motor. Two-groove pulleys
and two belts are provided on every drive package rated at 5
HP and above.
STARTERS AND HEATER ELEMENTS (7.5 - 15 HP):
blower motors that are available for the units do not have
inherent protection and require external motor overload protection. See details in Table 7.
the units to minimize the transmission of sound to the sur-
TABLE 1: STATIC RESISTANCES FOR UNIT ACCESSORIES
UNIT MODEL ACCESSORY CFM
8,000 9,000 10,000 11,000 12,000
LA300
LB360
LB480
LB600
Hot Water Coil 0.06 0.07 0.08 0.09 0.10
Steam Coil 0.11 0.14 0.17 0.20 0.23
10,000 11,000 12,000 13,000 14,000
Hot Water Coil 0.08 0.09 0.10 0.12 0.14
Steam Coil 0.17 0.20 0.23 0.27 0.31
12,800 14,400 16,000 17,600 19,200
Hot Water Coil 0.11 0.13 0.15 0.17 0.20
16,000 18,000 20,000 22,000 24,000
Hot Water Coil 0.15 0.18 0.21 0.24 0.28
Different size pulleys and belts are
The
TABLE 2: UNIT MOUN TING DIMENSIONS
LA/LB
UNIT
300
360
480
1.
See Figure 4 for dimensions AX, BX and CX.
Unitary Products Group 5
AX BX CX
69-1/4 49-1/16 26-5/8
69-1/4 49-1/16 26-5/8
84 50-9/16 34
1
DIMENSIONS, INCHES
Page 6
NOTE: The following illustration shows how the channels
should be secured to the unit using the hardware
provided with the suspension accessory.
(2) 9/16 HOLES FOR 1/ 2
HANGER RODS
SUSPENSION
CHANNEL
036-21335-002-A-1102
5/16 NUT,
FLATWASHER
3/8 NUT (USED
AS SPACER)
SIDE
PANEL
3
UNIT ANGLE
5/16 NUT,
LOCKWASHER,
FLATWASHER
UNIT PANEL
5/16 BOLT,
FLAT-WASHER
FIGURE 3 : DETAILS FOR SECURING BOTTOM MOUNTING SUPPORTS
D
AX
AX
A
3
1-1/2
HOR IZONTAL
LE U 360 O R 480
UN IT S U S PE ND ED
FR OM ABOVE
T he s ame c hannels ca n be us ed in e ither pos ition. W hen us ed to
1
support at ve rtical u nit, the se c hannels s hould be cut to ma tch the
bottom dimens ion of the e vapora tor coil s ection.
The s us pens ion cha nnels h ave two s ets o f mounting holes to
ac commodate horizontal u nits with or without a h eating c oil. O n
2
a h orizontal unit without a h eating coil, th e s uspens ion cha nnels
will extend 3 " beyond both e nds of the unit.
3
EVAP. C OIL
S E CT ION
BX
VERTICAL LA300, LB360, LB480
UNIT SUPPORTED FROM BELOW
BX
C
HE AT ING C OIL
SUSPENSION
ANGLE S
2
A
1
D
B
BLOWER
S E CT ION
BLOWER
S E CT ION
BX
B
EVAP.
COIL
S E CT ION
4
CX
BX
C
T he s ame channe ls c an be u sed to s upport a horiz ontal, fl oor-
3
mounted unit from be low.
After these bottom c hannels are c ut per Note 1 , a new h ole will h ave
4
to be d rilled a t the cut e nd if the unit is to be mounted o n isola tors.
FIGURE 4 : LA300/LB360 WEIGHT DISTRIBUTION
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036-21335-002-A-1102
TABLE 3: CORNER WEIGHTS
UNIT-
MODEL
LA300 1180 1125
LB360 1180 1146
LB480 1510 1426
LB600 1572 1640
Unit Weight
Configuration A B C DShipping Operation
HORIZONTAL 276 317 285 247
VERTICAL 262 301 301 262
HORIZONTAL 281 323 290 252
VERTICAL 266 307 307 266
HORIZONTAL 348 414 361 303
VERTICAL 292 348 427 359
HORIZONTAL 451 386 370 433
VERTICAL 484 414 342 400
TABLE 4: ACCESSORY OPERATING WEIGHT DISTRIBUTION (LBS)
ACCESSORY
2
BASE
HOT WATER COIL
STEAM COIL 1 ROW
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.
LA300 LB360 LB480 LB600
25 25 30 45
35 35 45 35
30 30 35 50
TABLE 5: UNIT BLOWER MOTOR DATA
UNIT MODEL HP
5
LA300
7.5
5
LB360
7.5
10
7.5
LB480
10
10
LB600
15
MOTOR KIT
MODEL NUMBER
2LR04605032
2LR04605023 208
2LR04605158 575
2LP04607133
2LP04607158 575
2LR04605032
2LR04605023 208
2LR04605158 575
2LP04607133
2LP04607158 575
2LP04610133
2LP04610158 575
2LP04607133
2LP04607158 575
2LP04610133
2LP04610158 575
2LP04610133
2LP04610158 575
2LP04615133
2LP04615158 575
1
FRAMESIZE
184
213
184
213
215
213
215
215
254
VOLTAGE
(3PH-60HZ)
230/460
230/460
230/460
208/230/460
208/230/460
208/230/460
208/230/460
208/230/460
208/230/460
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036-21335-002-A-1102
TABLE 6: UNIT DRIVE DATA
ADJUSTABLE MOTOR PULLEY FIXED BLOWER PULLEY BELTS
UNIT
MODEL
DRIVE KIT
MODEL
NUMBER
1LD0440 600 - 750 4.0- 5.0 1 1/8 12.0 1 3/16 2 63.3 A62
LA300
1LD0407 700 - 850 4.2- 5.2 1 3/8 11.0 1 3/16 2 63.3 A62
1LD0442 780 - 940 5.3 - 6.3 1 3/8 12. 0 1 3/16 2 63.3 A62
1LD0415 636 - 795 4.0 - 5.0 1 1/8 11.0 1 3/16 2 63.3 A62
LB360
1LD0407 668 - 827 4.2 - 5.2 1 3/8 11.0 1 3/16 2 63.3 A62
1LD0408 827 - 986 5.3 - 6.3 1 3/8 11.0 1 3/16 2 59.7 A59
LB480 1LD0409 607 - 776 4.3 - 5.5 1 3/8 12.4 1 3/16 2 85.1 B84
1LD0410 776 - 917 5.4 - 6.6 1 3/8 12. 4 1 3/16 2 86.8 B85
LB600 1LD0411 692 - 833 4.8 - 6.0 1 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
BLOWER
RPM
RANGE
PITCH DIA.
(IN.)
BORE
(IN.)
PITCH DIA.
(IN.)
BORE
(IN.) QTY.
PITCH
LENGTH
(IN.) DESIGNATION
TABLE 7: MOTOR OVERLOAD ELEMENTS
MOTOR HP VOLTAGE MODEL NUMBER
208 2MP04704600
5
7.5
10
15
230 2MP04704600
460 2MP04704900
575 2MP04705000
208 2MP04703700
230 2MP04704500
460 2MP04704300
575 2MP04704000
208 2MP04701600
230 2MP04704100
460 2MP04704200
575 2MP04704300
208 2MP04704400
230 2MP04701700
460 2MP04704500
575 2MP04704600
1
Do not operate the supply air blower motor above
its nominal HP rating when a unit is equipped with
a hot water coil a ccessory. Do not use steam in hot
water coils.
Do not operate the supply air blower above its
nominal HP rating when a unit is equipped with a
steam coil accessory.
Although these coils are suitable for a much higher
pressure, steam above 25 psig provides too much
heat that could damage the blower motor.
1.
These units are equipped from the factory with a correctly sized motor starter; overload elements are not
factory supplied.
Note: Three elements required per unit.
8 Unitary Products Group
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036-21335-002-A-1102
TABLE 8: HOT WATER COIL CAPACITIES
UNIT
MODEL
LA300
LB360 50
LB480
LB600 75
1.
NOTE: Temperature Water Drop (ºF) = (2 X MBH) /GPM.
HOT WATER
COIL MODEL
1HW0406
1HW0407
These capacities do not include any blower motor heat.
GPM CFM
6,000 204 263 325 384 443
8,000 236 304 372 440 508
50
10,000 265 341 416 492 568
12,000 291 374 457 540 623
8,000 236 304 372 440 508
10,000 265 341 416 492 568
12,000 291 374 457 540 623
14,000 315 405 495 585 675
12,800 348 447 547 646 746
75
16,000 389 500 611 722 833
19,200 425 547 668 790 911
16,000 389 500 611 722 833
20,000 436 561 686 810 935
24,000 473 610 746 882 1,019
1
ENTERING WATER TEMPERATURE MINUS ENTRY AIR TEMPERATURE °F.
70 90 110 130 150
TABLE 9: HOT WATER COIL CAPACITY CORRECTION AND PRESSURE DROP VS GPM
HOT WATER COIL MODEL GPM
25 0.4 0.79
1HW0406
1HW0407
1.
For pressure drop in feet (water), multiply these values by2.31.
50 1.0 1.00
75 1.8 1.04
100 3.4 1.07
50 1.0 0.95
75 1.5 1.00
100 2.4 1.03
125 3.5 1.05
PRESSURE DROP
PSI
CAPACITY CORRECTION
1
FACTOR
Unitary Products Group 9
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036-21335-002-A-1102
TABLE 10: STEAM COIL CAPACITIES1,MBH@2PSIG
UNIT
MODEL
LA300
LB360
1.
These capacities do not include any blower motor heat.
2.
Multiply these capacities by the factors in Table 11 to correct for higher steam pressure.
STEAM COIL
MODEL
1NF0454
CFM
6,000 471 424 380 330
8,000 535 483 432 380
10,000 592 535 478 422
12,000 642 580 518 456
8,000 535 483 432 380
10,000 592 535 478 422
12,000 642 580 518 456
14,000 687 621 555 489
2
DRY BULB TEMPERATURE OF AIR ENTERING COIL (°F)
10 30 50 70
TABLE 11: CORRECTION FACTORS FOR HIGH STEAM
STEAM PRESSURE (PSIG) 5101520 25
CAPACITY CORRECTION FACTOR 1.05 1.12 1.19 1.25 1.30
NOTE: Steam Rate = (lbs/Hr.) = 1.025 x MBH
10 Unitary Products Group
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036-21335-002-A-1102
EVAPORATOR
COIL SECTION
7/8 KNOCKOUTS FOR POWER
AND CONTROL WIRING
AIR
OUT
M
K
L
C
AIR
IN
B
A
AIR
OUT
K
J
AIR
IN
5/8
BLOWER
SECTION
EVAPORATOR
SECTION
5/8
D
LESS
BOTTOM
E
{
PANEL
D
See detailed drawings for piping
and drain connections
5/8 PANEL
on following pages.
D
5/8 BOTTOM
PANEL
FIGURE 5: UNIT DIMENSIONS - LA300, LB360 & LB480
T ABLE 12: UNIT DIMENSIONS - LA300, LB360, LB480
MODEL
LA300
LB360
LB480
A BCDEFGH J KLM
100-1/8 95-5/8 33-1/4 36-5/8 74 2-1/2 18-7/8 16-1/2 15-13/16 21-7/8 18 22-9/16
100-1/8 95-5/8 33-1/4 36-5/8 74 2-1/2 18-7/8 16-1/2 15-13/16 21-7/8 18 22-9/16
103-1/8 95-5/8 40-5/8 44 88-5/8 2-1/2 18-7/8 23-7/8 20-11/16 21-7/8 18 22-11/16
FIGURE 6: 25 TON LIQUID LINE SOLENOID
WIRING
Unitary Products Group 11
FIGURE 7: 30, 40 & 50 TON LIQUID LINE
SOLENOID WIRING
Page 12
036-21335-002-A-1102
LIQUID
SYS. #1
LIQUID
SUCTION
FIGURE 8: LA300 PIPING CONNECTIONS
LIQUID
SUCTION
SYS. # 2
SYS. #2
SYS. #1
FIGURE 10: LB480 PIPING CONNECTIONS
TABLE 1 3: UNIT CONNECTION SIZES
Connection Entry
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 2-1/8
Liquid Line Sys # 1 7/8 7/8 7/8 7/8
Liquid Line Sys # 2 N/A 7/8 7/8 7/8
Power Wiring 7/8 (2) 7/8 (2) 7/8 (2) 1-3/8
Control Wiring 7/8 (2) 7/8 (2) 7/8 (2) 7/8 (2)
Connection Size
LIQUID (SYS. #1)
LIQUID (SYS. #2)
SUCTION
(SYS. #2)
FIGURE 9: LB360 PIPING CONNECTIONS
12 Unitary Products Group
SUCTION
(SYS. #1)
Page 13
036-21335-002-A-1102
FIGURE 11: UNIT DIMENSIONS - LB600
Condensate
Drain
10.1"
23.86"
3.0"
Liquid
Line
Sys. #1
Liquid
Line
Sys. #2
3.0"
2.1"
6.7"
6.0"
4.7"
13.5"
4.0"
3.8"
24.0"
Suction
Line
Sys. #2
13.5"
Suction
Line
Sys. #1
FIGURE 12: LB600 PIPING CONNECTIONS - END PANEL DETAIL
Unitary Products Group 13
Page 14
FIGURE 13: HOT W ATER COIL DIMENSIONS
TABLE 14 : HOT WATER COIL DIMENSIONS
COIL
MODEL
1HW0406
1HW0407
UNIT
MODEL
LA300
LB360
LB480
LB600
ABCDEF
100-1/8 37-7/8 6-3/4 3-7/8 1-3/8 1-3/8
103-1/8 45-1/4 6-1/2 4 1-5/8 1-5/8
036-21335-002-A-1102
DIMENSIONS
FIGURE 14: STEAM COIL DIMENSIONS
TABLE 15: STEAM COIL DIMENSIONS
COIL
MODEL
1NF0454
1.
Coils are field-installed between the evaporator coil and the blower section of the unit.
UNIT
MODEL
LA300
LB360
1
DIMENSIONS
A BCDEFG
100-1/8 37-7/8 4-3/ 8 18-3/8 1-1/2 2 2-1/2
TABLE16:BASESECTIONSDIMENSIONS
BASE
MODEL
1BS0406
1BS0407 LB480 103-1/8 45-1/4
1.
Ventilation air can be brought into the unit through the
base section providing the base section is fully insulatedinthefield.
UNIT
MODEL
LA300
LB360
DIMENSIONS
AB
100-1/8 37-7/8
1
FIGURE 15: BASE SECTION DIMENSIONS
14 Unitary Products Group
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036-21335-002-A-1102
TABLE 17: PH YSICAL DATA
DESCRIPTION
Rows Deep X Rows High 4 x 40 4 x 40 4 x 50 4 x 62
Finned Length, Inches 93 93 96 96
EVAPORATOR
COIL
CENTRIFUGAL
BLOWERS (2 PER UNIT)
FILTERS (THROWAWAY)
OPERATING CHARGE
(LBS R-22)
DRAINABLE HOT WATER
COIL ACCESSORY
NON-FREEZE, STEAM
DISTRIBUTING COIL
ACCESSORY
Face Area, Feet
Tube (copper) OD,Inches 3/8 3/8 3/8 3/8
Fins (Aluminum) per 1 inch 16 16 16 16
Piping Connections,
Inches
Diameter X Width, Inches (Forward Curved) 18 x 18 20 x 18
Size and Quantity Per
Model, Inches
Total Face Area / feet
System 1 49.65 30.08 37.83 46. 59
System 2 - 30.08 37.83 46.59
Tube (copper) OD,Inches 1/2 1/2 1/2
Rows Deep 2 2 2
Fins (Aluminum) per 1 inch 12 12 8
Face Area, Feet
Connections (Supply & Return), Inches 1 3/8 OD (Copper) 1 5/8 OD (Copper)
Tube (copper) OD,inches 1 (Outside) 5/8 (Inside)
Rows Deep 1
Fins (Aluminum) per 1 inch 8
Face Area, feet
Connection, (Brass)
Inches (NPTE)
MODEL
LA300 LB 360 LB480 LB600
2
25.8 25.8 33.3 41.3
Liquid, Inches 7/8 7/8 7/8 7/8
Suction, Inches 2 1/8 1 1/8 1 3/8 2 1/8
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
2
2
2
34.7 42.6 53.1
21.2 27.2 27.2
N/A
18.2
Inlet 2
Outlet 1-1/2
Unitary Products Group 15
Page 16
TABLE 17: PHYSICAL DATA
DESCRIPTION
Basic Unit (Less Motor & Drive) 980 980 1260 1474
Shipping Weight (lbs) 1180 1180 1510 1572
Operating Weight (lbs) 1125 1146 1426 1640
COMPONENT WEIGHT
Accessories
Blower Motor (1750 RPM)
036-21335-002-A-1102
MODEL
LA300 LB 360 LB480 LB600
Hot Water Coil 150 150 190 190
Steam Coil 160 160 - -
117(5hp) 117 (5hp) - -
120 (7.5hp) 120(7.5hp) 120 (7.5hp) 141 (10hp)
- 141 (10hp) 141 (10hp) 217 (15hp)
16 Unitary Products Group
Page 17
036-21335-002-A-1102
TABLE 18: ELECTRICAL DATA
UNIT MODEL HP FLA
5
LA300
7.5
5.0
LB360
LB480
LB600
7.5
10
7.5
10
10
15
VOLTAGE
(3PH-60HZ)
16.7 208 21 35
15.2 230 19 30
7.6 460 10 15
6.1 575 8 15
24.2 208 30 50
22 230 28 45
11 460 14 20
9 575 11 20
16.7 208 21 35
15.2 230 19 30
7.6 460 10 15
6.1 575 8 15
24.2 208 30 50
22 230 28 45
11 460 14 20
9 575 11 20
30.8 208 39 60
28 230 35 60
14 460 18 30
11 575 14 20
24.2 208 30 50
22 230 28 45
11 460 14 20
9 575 11 20
30.8 208 39 60
28 230 35 60
14 460 18 30
11 575 14 20
30.8 208 39 60
28 230 35 60
14 460 18 30
11 575 14 20
46.2 208 58 100
42 230 53 90
21 460 26 45
17 575 21 35
MIN. CIRCUIT AMPACITY
MAX. FUSE SIZE
(Amps)
Unitary Products Group 17
Page 18
036-21335-002-A-1102
TABLE 19: FAN PERFORMANCE DATA - 25 TON
1
CFM
RPM
8,000 9,000 10,000 11,000 12,000
SP
2
BHP
3
W
K
SP
2
BHP
3
W
K
SP
2
BHP
3
W
K
SP
2
BHP
3
W
K
SP
2
BHP
3
600 - - - 0.30 2.5 2.3 0.20 3.1 2.9 0.02 3.6 3.4 - - 635 0.56 2.4 2.3 0.43 2.7 2.6 0.31 3.3 3.1 0.13 3.8 3.5 - - -
700 0.80 3.0 2.8 0.68 3.3 3.1 0.54 3.7 3.5 0.38 4.2 3.9 0.20 4.8 4.5
775 1.12 3.7 3.4 1.00 4.0 3.7 0.85 4.4 4.1 0.70 4.8 4.5 0.54 5.3 5.0
800 1.23 3.9 3.7 1.11 4.3 4.0 0.97 4.7 4.4 0.82 5.1 4.8 0.66 5.6 5.2
875 1.60 4.8 4.5 1.48 5.1 4.8 1.34 5.6 5.2 1.19 6.0 5.7 1.04 6.6 6.2
900 1.73 5.1 4.8 1.61 5.5 5.1 1.47 5.9 5.5 1.33 6.4 6.0 1.17 7.0 6.5
940 1.95 5.6 5.2 1.82 6.0 5.6 1.70 6.5 6.1 - - - - - -
1.
Unit resistance is based on a dry evaporator coil an d clean filters.
2.
Available s tatic pressure in IWG to overcome the resistance ofthe duct system and any accessories added to the unit. Refer t o
the blower motor and drive table and the accessory static resistance table for additional information.
3.
Motors can be selected to operate into the service factor because they are located in the moving air stream, upstream of any heating device. 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.
W
K
TABLE 20: FAN PERFORMANCE DATA - 30 TON
1
CFM
RPM
10,000 11,000 12,000 13,000 14,000
SP
2
BHP
3
K
W
SP
2
BHP
3
K
W
SP
2
BHP
3
K
W
SP
2
BHP
3
K
W
SP
2
BHP
3
600 0.20 3.1 2.9 0.02 3.6 3.4 - - - - - - - - -
635 0.31 3.3 3.1 0.13 3.8 3.5 - - - - - - - - -
700 0.54 3.7 3.5 0.38 4.2 3.9 0.20 4.8 4.5 0.03 5.3 5.0 - - -
775 0.85 4.4 4.1 0.70 4.8 4.5 0.54 5.3 5.0 0.39 5.8 5.5 0.20 6.4 6.0
800 0.97 4.7 4.4 0.82 5.1 4.8 0.66 5.6 5.2 0.52 6.1 5.7 0.35 6.7 6.3
875 1.34 5.6 5.2 1.19 6.0 5.7 1.04 6.6 6.2 0.93 7.1 6.6 0.77 7.7 7.2
900 1.47 5.9 5.5 1.33 6.4 6.0 1.17 7.0 6.5 1.07 7.5 7.0 0.90 8.2 7.6
940 1.70 6.5 6.1 1.55 7.0 6.6 1.40 7.7 7.2 1.31 8.3 7.8 1.09 9.0 8.4
1.
Unit resistance is based on a dry evaporator coil an d clean filters.
2.
Available s tatic pressure in IWG to overcome the resistance ofthe duct system and any accessories added to the unit. Refer t o
the blower motor and drive table and the accessory static resistance table for additional information.
3.
Motors can be selected to operate into the service factor because they are located in the moving air stream, upstream of any heating device. 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.
K
W
18 Unitary Products Group
Page 19
036-21335-002-A-1102
3.2
3.0
2.8
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
TOTAL STATIC PRESSURE, IWG
0.8
0.6
0.4
0.2
0
0
10 20 30
Available external static pressure for unit accessories and
the duct system.
1000 RPM
900 RPM
800 RPM
700 RPM
600 R
500 RPM
PM
40
50 60 70
80
6 BHP
5 BHP
3 BHP
2 BHP
90
4 BHP
110
100
Internal unit resistance based
on a dry coil plus 2"
throwaway filters.
120 130
CFM (X 100)
8 BHP
140
10 BHP
150
160 170
180
190
200 210
220
230
LA300 & LB360
FIGURE 16: BLOWER CURVE LA300 & LB360
Unitary Products Group 19
Page 20
036-21335-002-A-1102
TABLE 21: FAN PERFORMANCE DATA - 40 TON
1
CFM
RPM
12,800 14,400 16,000 17,600 19,200
SP
2
BHP KW
SP
2
BHP
KW
SP
2
BHP
KW
SP
2
BHP
KW
SP
2
BHP
600 0.20 4.3 3.7 - - - - - - - - - - - -
640 0.38 4.8 4.1 0.19 5.6 4.8 - - - - - - - - -
700 0.65 5.5 4.7 0.47 6.4 5.5 0.28 7.2 6.2 - - - - - -
775 0.99 6.5 5.6 0.84 7.4 6.4 0.66 8.4 7.2 0.46 9.4 8.1 0.23 10.4 9.0
800 1.11 6.8 5.9 0.96 7.8 6.7 0.79 8.8 7.6 0.59 9.8 8.4 0.36 10.8 9.3
900 1.65 8.1 7.0 1.52 9.3 8.0 1.36 10. 5 9.0 - - - - - -
915 1.73 8.3 7.2 1.60 9.5 8.2 1.44 10. 7 9.2 - - - - - -
1.
Unit resistance is based on a dry evaporator coil an d clean filters.
2.
Available s tatic pressure in IWG to overcome the resistance ofthe duct system and any accessories added to the unit. Refer t o
the blower motor and drive table and the accessory static resistance table for additional information.
TABLE 22: FAN PERFORMANCE DATA - 50 TON
1
KW
CFM
RPM
16,000 18,000 20,000 22,000 24,000
SP
2
BHP KW
SP
2
BHP
KW
SP
2
BHP
KW
SP
2
BHP
KW
SP
2
BHP
KW
600 0.82 6.0 5.2 0.59 7.2 6.2 0.35 8.4 7.2 0.08 9.7 8.4 - - -
660 1.17 7.3 6.3 0.96 8.5 7.3 0.73 9.8 8.5 0.45 11.2 9.7 0.14 12.7 11.0
700 1.40 8.2 7.1 1.21 9.4 8.1 0.98 10. 7 9.2 0.70 12.2 10.5 0.40 13.7 11.8
760 1.76 9.5 8.2 1.59 10.8 9.3 1.38 12.3 10.6 1.11 13.8 11.9 0.81 15.6 13.5
800 2.00 10.4 9.0 1.85 11.8 10.2 1.64 13.3 11.5 1.38 14.9 12.9 1.09 16.9 14.6
900 2.60 12.8 11.0 2.49 14.5 12.5 2.35 16.0 13.8 - - - - - -
930 2.78 13.5 11.6 2.68 15.3 13.2 - - - - - - - - -
1.
Unit resistance is based on a dry evaporator coil an d clean filters.
2.
Available s tatic pressure in IWG to overcome the resistance ofthe duct system and any accessories added to the unit. Refer t o
the blower motor and drive table and the accessory static resistance table for additional information.
20 Unitary Products Group
Page 21
036-21335-002-A-1102
3.2
3.0
2.8
2.6
LB480
15 BHP
1000 RPM
12-1/2 BHP
2.4
2.2
2.0
1.8
1.6
1.4
1.2
TOTAL STATIC PRESSURE, IWG
1.0
0.8
0.6
0.4
0.2
0
0
10
20
30
900 RPM
800 RPM
700 RPM
600 RPM
500 RPM
40
50
60 70
80
100
90
CFM (X 100)
5 BHP
110
8 BHP
6 BHP
120
130 140 150 160
10 BHP
170
180
190
200
Available external static pressure for unit accessories and
the duct system.
FIGURE 17: BLOWER CURVE LB480
Unitary Products Group 21
Internal unit resistance based
on a dry coil plus 2"
throwaway filters.
Page 22
LB600
036-21335-002-A-1102
3.2
3.0
2.8
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
TOTAL STATIC PRESSURE, IWG
1.0
0.8
900 RPM
800 RPM
700 RPM
600 RPM
500 RPM
8 BHP
6 BHP
12 BHP
10 BHP
14 BHP
16 BHP
0.6
0.4
0.2
0
0
40
20
AvaIlable external static pressure for unit accessories and
the duct system.
60
80
100
FIGURE 18: BLOWER CURVE LB600
120
140
160
180 200
CFM (X 100)
Internal unit resistance based
on a dry coil plus 1"
throwaway filters.
220 240
260
280
300
320
340 360
22 Unitary Products Group
Page 23
036-21335-002-A-1102
GUIDE SPECIFICATIONS
EACH UNIT SHALL BE:
• Covered by a 1-year limited parts warranty on the complete unit.
• In current production with published literature available
to check performance, limitations, specifications, power
requirements,dimensions, operation and appearance;
also equipped with a V-belt drive option that:
a. Will permit the blower RPM to be adjusted to meet
the exact CFM requirement of the system.
EACH UNIT ENCLOSURE SHALL HAVE:
• A steel angle frame toprovide the rigid support required
for shipping, rigging and years of dependable operation.
• Exterior panels of 18 gauge steel, finished with baked
enamel to provide a long lasting quality appearance
• Removablepanels to provide easy access to the internal
components for maintenance and service, and,
• A filter rack with 2 ” filters.
THE DIMENSIONS OF EACH UNIT SHALL NOT
EXCEED THOSE SPECIFIED.
THE BLOWER MOTOR SHALL:
• Be mounted within the insulated cabinet to minimize the
transmission of soundto the surrounding space, and
• Have a service factor of 1.15.
THE EVAPORATOR COIL SHALL:
• Consist of copper tubes arranged in staggered rows,
mechanically expanded into aluminum fins,
• Be draw-through, and
• Include factory-mounted distributors, expansion valves
and solenoid valves for both capacity reduction and
pumpdown.
THE BLOWER WHEELS SHALL:
• Be dynamicallybalanced to minimize the levels of sound
and vibration generated by the unit.
Unitary Products Group 23
Page 24
Subject to 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 Drive 73069
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