York LA300, 480, 600, LB360 User Manual
®
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).
1
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
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
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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
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
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
FIGURE 2: UNIT IN STALLATION
4 Unitary Products Group
are leak-tested at 325psig under water and dried before their
connections are capped for storage and shipping.
Drainable water coils are available for
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
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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