Unitary products group LA300 User manual

NOTES, CAUTIONS AND WARNINGS
Installer should pay particular attention to the words:
NOTE, CAUTION, and WARNING. Notes are intended to
clarify or make the installation easier. Cautions are given to
prevent equipment damage. Warnings are given to alert
installer that personal injury and/or equipment damage
may result if installation procedure is not handled properly.
INSTALLATION
MANUAL
CAUTION: READ ALL SAFETY GUIDES BEFORE YOU
BEGIN TO INSTALL YOUR UNIT.
SAVE THIS MANUAL
66337-YIM-D-0206
SPLIT-SYSTEM
(AIR COOLED)
EVAPORATOR BLOWER
MODELS: LA300
LB360
LB480
LB600
CONTENTS
GENERAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
REPLACEMENT PARTS . . . . . . . . . . . . . . . . . . . . . . . . 4
INSPECTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
INDOOR PRODUCT NOMENCLATURE . . . . . . . . . . . . 5
UNIT INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . 11
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
See the following page for a complete Table of Contents.

66337-YIM-D-0206
2Unitary Products Group
TABLE OF CONTENTS
GENERAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
NOTES, CAUTIONS AND WARNINGS . . . . . . . . . . . . . . . .4
REPLACEMENT PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . .4
INSPECTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
LIMITATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
INDOOR PRODUCT NOMENCLATURE . . . . . . . . . . . . . . .5
BLOWER MOTOR MOUNTING LOCATIONS . . . . . . . . .7
LA300/LB360/LB480 MOTOR MOUNTING . . . . . . . . . . . .7
LB600 MOTOR MOUNTING. . . . . . . . . . . . . . . . . . . . . . . .7
MOTOR MOUNT ARRANGEMENTS. . . . . . . . . . . . . . . .8
LA300/LB360/LB480 MOTOR ARRANGEMENTS. . . . . . .8
ADDITIONAL MOTOR ARRANGMENTS FOR
LA300/LB360/LB480 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
LB600 MOTOR ARRANGEMENTS . . . . . . . . . . . . . . . . . .9
RE-LOCATING THE LB600 MOTOR MOUNTING PLATE.9
ALTERNATE POSITION ONE . . . . . . . . . . . . . . . . . . . . . .9
ALTERNATE POSITION TWO . . . . . . . . . . . . . . . . . . . . . .9
ALTERNATE POSITION THREE . . . . . . . . . . . . . . . . . . . .9
AIR DISCHARGE CONVERSION. . . . . . . . . . . . . . . . . . .9
LA360/LB360/LB480 AIR DISCHARGE . . . . . . . . . . . . . . .9
LB600 AIR DISCHARGE . . . . . . . . . . . . . . . . . . . . . . . . .11
UNIT INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
RIGGING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
CLEARANCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
MOUNTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
DUCT CONNECTIONS. . . . . . . . . . . . . . . . . . . . . . . . . .15
INSULATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
SUPPLY AIR DUCTS . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
RETURN AIR DUCT ANGLES . . . . . . . . . . . . . . . . . . . . .16
DRAIN CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . .16
REFRIGERANT MAINS . . . . . . . . . . . . . . . . . . . . . . . . .16
EVAPORATOR SECTION PIPING. . . . . . . . . . . . . . . . . .17
EXPANSION VALVE BULB INSTALLATION . . . . . . . . .17
LA300 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
LB360/LB480/LB600. . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
LIQUID LINE SOLENOIDS. . . . . . . . . . . . . . . . . . . . . . . .17
PUMP OUT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
BEARING ALIGNMENT: LB600 . . . . . . . . . . . . . . . . . . .18
AIR SYSTEM ADJUSTMENT. . . . . . . . . . . . . . . . . . . . .18
TWIN BELT DRIVE ADJUSTMENT . . . . . . . . . . . . . . . .18
ELECTRICAL CONNECTIONS. . . . . . . . . . . . . . . . . . . .19
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
LIST OF FIGURES
Fig.# Pg.#
1 LA300 AN LB360/LB480 FACTORY MOTOR
MOUNTING POSITION. . . . . . . . . . . . . . . . . . . . . . . . .7
2 LB600 FACTORY MOTOR MOUNTING POSITION. . .7
3 LB600 MOTOR MOUNT PLATE . . . . . . . . . . . . . . . . . .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 LB600 AIRFLOW ARRANGEMENTS . . . . . . . . . . . . .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 RECOMMENDED DRAIN PIPING. . . . . . . . . . . . . . . .16
15 LB600 CENTER BEARING . . . . . . . . . . . . . . . . . . . . 18
16 DOUBLE GROOVE PULLEY. . . . . . . . . . . . . . . . . . . .18
17 UNIT DIMENSIONS - LA300, LB360, LB480 . . . . . . .22
18 25 TON LIQUID LINE SOLENOID WIRING . . . . . . . .22
19 30, 40 & 50 TON LIQUID LINE SOLENOID WIRING .22
20 LA300 PIPING CONNECTIONS . . . . . . . . . . . . . . . . .23
21 LB360 PIPING CONNECTIONS . . . . . . . . . . . . . . . . .23
22 LB480 PIPING CONNECTIONS . . . . . . . . . . . . . . . . .23
23 UNIT DIMENSIONS. . . . . . . . . . . . . . . . . . . . . . . . . . .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
INDOOR COIL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
27 30-TON - PRESSURE DROP VS. CFM ACROSS
INDOOR COIL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
28 40 TON - PRESSURE DROP VS. CFM ACROSS
INDOOR COIL (DOMESTIC). . . . . . . . . . . . . . . . . . . .27
29 50 TON - PRESSURE DROP VS. CFM ACROSS
INDOOR COIL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
30 INDOOR UNIT WIRING DIAGRAM
LB360, 480 & 600 . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
31 INDOOR WIRING DIAGRAM LA300. . . . . . . . . . . . . .29

66337-YIM-D-0206
Unitary Products Group 3
LIST OF TABLES
Tbl.# Pg.#
1 UNIT APPLICATION DATA. . . . . . . . . . . . . . . . . . . . . . 5
2 PHYSICAL DATA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 UNIT MOUNTING DIMENSIONS . . . . . . . . . . . . . . . . 12
4 CORNER WEIGHTS . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5 ACCESSORY OPERATING WEIGHT
DISTRIBUTION (LBS) . . . . . . . . . . . . . . . . . . . . . . . . . 12
6 ELECTRICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7 MOTOR OVERLOAD ELEMENTS . . . . . . . . . . . . . . . 19
8 UNIT DRIVE DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Tbl.# Pg.#
9 UNIT BLOWER MOTOR DATA. . . . . . . . . . . . . . . . . . 20
10 FAN PEFORMANCE DATA - 25 TON. . . . . . . . . . . . . 21
11 FAN PEFORMANCE DATA - 30 TON. . . . . . . . . . . . . 21
12 FAN PERFORMANCE DATA - 40 TON . . . . . . . . . . . 21
13 FAN PERFORMANCE DATA - 50 TON . . . . . . . . . . . 21
14 UNIT DIMENSIONS - LA300, LB360, LB480 . . . . . . . 22
15 UNIT CONNECTION SIZES . . . . . . . . . . . . . . . . . . . . 23

66337-YIM-D-0206
4Unitary Products Group
GENERAL
The LA and LB evaporator units are designed for use with the
HA/HB Series condensing units.Units are designed to match
up with LA/LB series Evaporator Blowers to meet ASHRAE
90.1 standards.
Each unit consists of a coil section and a blower section that
are factory assembled and shipped as shown in figures 3 and
4. These sections may be rearranged in the field for other air
discharge patterns. See figures 7, 8 and 9.
The LA and LB evaporator units have 24 volt normally closed
solenoid valves to match the 24-volt control circuits of the
SimplicityTM control board in the HA300 as well as the
HB360, HB480 and HB600 condensing units.
NOTES, CAUTIONS AND WARNINGS
Installer should pay particular attention to the words: NOTE,
CAUTION and WARNING. Notes are intended to clarify or
make installation easier. Cautions are given to prevent equip-
ment damage. Warnings are given to alert installer that per-
sonal injury and/or equipment damage may result if
installation procedure is not handled properly.
REPLACEMENT PARTS
Refer to parts manual for complete listing of replacement
parts on this equipment.
INSPECTION
As soon as a unit is received, it should be inspected for possi-
ble damage during transit. If damage is evident, the extent of
the damage should be noted on the carrier's freight bill. A
separate request for inspection by the carrier's agent should
be made in writing.
LIMITATIONS
This unit must be installed in accordance with all national and
local safety codes. If no local codes apply, installation must
conform to the appropriate national code. The unit is
designed to meet National Safety Code Standards. If
components are to be added to a unit to meet local codes,
they are to be installed at the dealer's and/or the customer's
expense. See Table 1 for unit application data.

66337-YIM-D-0206
Unitary Products Group 5
NOTE: LB600 Indoor Unit matches with both HB480
and HB600 Outdoor Condensing Units for
maximum efficiency.
INDOOR PRODUCT NOMENCLATURE
LA 300 C 00 A 6 A AA 1
Model # Model Number
Description Options
L Product Category L = Air Handling Unit
A Product Identifier A = R-22 Standard Efficiency 2-Pipe
B = R-22 Standard Efficiency 4-Pipe
300 Nominal Cooling Capacity
MBH
300 = 25 Ton
360 = 30 Ton
480 = 40 Ton
600 = 50 Ton
CHeatType C = Cooling Only
00 Nominal Heating
Capacity 00 = No Heat Installed
A Airflow Options A = None
6Voltage 5 = 575-3-60 6 = 208/230-460-3-60
A Installation Options A = None
AA Additional Options AA = None
1 Product Generation 1 = First Generation 2 = Second Generation
TABLE 1: UNIT APPLICATION DATA
Model Power Supply Voltage Voltage Variation Supply Air Range CFM Entering Air Temperature Degrees °F
Cooling
DB/WB Heating DB*
Min. Max. Min. Max. Min. Max. Min. Max.
LA300 208/230-3-60 187 253 8,000 12,000 65/57 95/72 40 77 460-3-60 414 506 8,000 12,000 65/57 95/72 40 77
575-3-60 540 630 8,000 12,000 65/57 95/72 40 77
LB360 208/230-3-60 187 253 10,000 14,000 65/57 95/72 40 77 460-3-60 414 506 10,000 14,000 65/57 95/72 40 77
575-3-60 540 630 10,000 14,000 65/57 95/72 40 77
LB480 208/230-3-60 187 253 12,800 19,200 65/57 95/72 40 77 460-3-60 414 506 12,800 19,200 65/57 95/72 40 77
575-3-60 540 630 12,800 19,200 65/57 95/72 40 77
LB600 208/230-3-60 187 253 16,000 24,000 65/57 95/72 40 77 460-3-60 414 506 16,000 24,000 65/57 95/72 40 77
575-3-60 540 630 16,000 24,000 65/57 95/72 40 77
*. Heating Min/Max temperatures apply to steam and hot water coils. NOTE: Do not apply steam to hot water coils.

66337-YIM-D-0206
6Unitary Products Group
TABLE 2: PHYSICAL DATA
DESCRIPTION MODEL
LA300 LB360 LB480 LB600
EVAPORATOR
COIL
Rows Deep X Rows High 4 x 40 4 x 40 4 x 50 4 x 62
Finned Length, Inches 93 93 96 96
Face Area, Feet225.8 25.8 33.3 41.3
Tube (copper) OD, Inches 3/8 3/8 3/8 3/8
Fins (Aluminum) per 1 inch 16 16 16 16
Piping Connections,
Inches Liquid, Inches 7/8 7/8 7/8 7/8
Suction, Inches 2 1/8 1 1/8 1 3/8 2 1/8
CENTRIFUGAL
BLOWERS (2 PER UNIT) Diameter X Width, Inches (Forward Curved) 18 x 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 / feet234.7 42.6 53.1
OPERATING CHARGE
(LBS R-22) System 1 49.65 30.08 37.83 46.59
System 2 - 30.08 37.83 46.59
DRAINABLE HOT WATER
COIL ACCESSORY
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, Feet221.2 27.2 27.2
Connections (Supply & Return), Inches 1 3/8 OD (Copper) 1 5/8 OD (Copper)
NON-FREEZE, STEAM
DISTRIBUTING COIL
ACCESSORY
Tube (copper) OD, inches 1 (Outside) 5/8 (Inside)
N/A
Rows Deep 1
Fins (Aluminum) per 1 inch 8
Face Area, feet218.2
Connection, (Brass)
Inches (NPTE) Inlet 2
Outlet 1-1/2
COMPONENT WEIGHT
Basic Unit (Less Motor & Drive) 980 980 1260 1474
Shipping Weight (lbs) 1180 1180 1510 -
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) 120 (7.5hp) 141 (10hp)
- 141 (10hp) 141 (10hp) 217 (15hp)

66337-YIM-D-0206
Unitary Products Group 7
BLOWER MOTOR MOUNTING LOCATIONS
Units are shipped from the factory less motor and drives. The
blower motor and drive packages are ordered and shipped
separately for field mounting. However, the units are shipped
with the motor mounting assembly installed as shown in
1 for the LA300, LB360, LB480 and 2 for the LB600.
NOTE: The 5HP motors are not inherently protected.
The motors used with the evaporator blower are 3-phase and
can drive the blower wheels from either end of the blower
section. Reversing the direction of rotation can be accom-
plished by changing the connection of the power supply wir-
ing at the motor terminal box.
NOTE: The 7.5-15 HP blower motors have solid bases
and are not inherently protected. For proper
operation, these motors require overload
heater elements. Please see current product
price pages for overloads.
LA300/LB360/LB480 MOTOR MOUNTING
The LA300, LB360 and LB480 ship from the factory with a
motor mounting adapter plate for use with the 7.5 and 10 HP
motors. If a 5 HP motor is used, the adapter is not necessary
and should be removed and discarded.
LB600 MOTOR MOUNTING
The motor mounting plate will accommodate a 10 or 15 HP
motor. One set of boltholes is provided on each end of the
motor mounting plate for either motor. The motor mounting
plate can be raised or lowered to any position on the adjust-
ment screws to adjust the belt tension for the various pulley
settings to cover the complete range of blower speeds.
The physical size of the 15 HP motor reduces the adjustment
range of the motor mounting plate. To maximize this amount
of adjustment, one set of boltholes is provided near the
adjustment screws on each end of the motor mounting plate
(refer to 4).
For some motor/blower wheel arrangements, however, the
motor cannot be mounted in these bolt holes because the
motor terminal box would interfere with one of the blower sec-
tion panels. To make these motor/blower wheel arrange-
ments possible, a second set of boltholes is provided near
the pivot bolts on each end of the motor mounting plate.
The 15 HP drive package requires two different lengths of
belts to vary the blower wheel RPM over the complete range
of rated conditions. When the motor is mounted near the
adjustment screws, the two lengths of belt are interchange-
able except for the higher and lower limits of blower wheel
RPM. When the motor is mounted near the pivot bolts, the
shorter length of belt is recommended for the higher blower
wheel Rpm's and the longer length of belt is recommended
for the lower blower wheel Rpm's. See Page 7 for the recom-
mended blower motor locations.
FIGURE 1 - LA300 AN LB360/LB480 FACTORY
MOTOR MOUNTING POSITION
FIGURE 2 - LB600 FACTORY MOTOR MOUNTING
POSITION
MOTOR MOUNTING
CHANNELS AND
MOUNTING PLATE
ARE ALWAYS
SHIPPED IN THIS
LOCATION.
A l t e r n a t i v e P o s i t i o n
1 F o r P i v o t B o l t s
A l t e r n a t e
P o s i t i o n 3
F o r P i v o t B o l t s
A l t e r n a t i v e P o s i t i o n
2 F o r P i v o t B o l t s
A d j u s t m e n t
S c r e w ( 2 )
M o t o r M o u n t i n g P l a t e
( S t a n d a r d L o c a t i o n
a s S i p p e d ) P i v o t B o l t ( 2 )
FIGURE 3 - LB600 MOTOR MOUNT PLATE
1 0 H P
A d j u s t m e n t
S c r e w H o l e s
1 5 H P
1 5 H P
1 5 H P
1 5 H P
1 0 H P
1 5 H P
1 5 H P

66337-YIM-D-0206
8Unitary Products Group
MOTOR MOUNT ARRANGEMENTS
The motor mounting arrangement can be changed to allow
motor access based on the airflow arrangement required.
The recommended motor location for each blower arrange-
ment is as follows.
LA300/LB360/LB480 MOTOR ARRANGEMENTS
The LA300, LB360 and LB480 units are shipped with the
motor mount in location A as shown in 4. If this is the desired
position, the motor mounting assembly is already in the cor-
rect position and the motor and drive package can be
installed without modifications.
ADDITIONAL MOTOR ARRANGMENTS FOR LA300/
LB360/LB480
Move the entire motor amounting assembly (both the mount-
ing plate and the channels) so that the mounting plate will be
in the correct location.
1. Rotate the motor mounting plate 180 degrees on the
mounting channels. (For locations B, and D only! Do not
rotate the plate for location C or E.)
2. Install the motor and drive package.
NOTE: The blower section must be lifted off the evap-
orator section to gain access to the mounting
channel fasteners. Since these sections have
to be repositioned for the arrangements 2
through 10 and 12 of 6, the motor mounting
assembly should be relocated before the two
sections are rejoined.
FIGURE 4 - LA300/LB360/LB480 MOTOR
LOCATION A
M O T O R M O T O R
M O U N T I N G
C H A N N E L S
M O T O R
M O U N T I N G
P L A T E
FIGURE 5 - LA300/LB360/LB480 MOTOR ARRANGEMENTS
SEE
NOTES
ARRANGEMENT 1, 4, 8 OR 11
AB
SEE
NOTES
SEE
NOTES
CD
C
E
SEE
NOTES
ARRANGEMENT 3, 5 OR 10 ARRANGEMENT 9 OR 12
ARRANGEMENT 2, 6 OR 7
NOTE: Since the motor mounting assembly cannot be
secured to the panel with the blower openings,
the motor cannot be installed in either of the
normally recommended bottom positions.

66337-YIM-D-0206
Unitary Products Group 9
LB600 MOTOR ARRANGEMENTS
The LB600 unit is shipped with the motor mount in the stan-
dard location as shown in 2.
If this is the desired position, the motor mounting assembly is
already in the correct position and the motor and drive pack-
age can be installed without modifications.
RE-LOCATING THE LB600 MOTOR MOUNTING PLATE
The motor mounting plate can be re-located in three alternate
positions:
ALTERNATE POSITION ONE
For locating motor mounting plate in alternate position one,
see 3 and re-locate as follows:
1. Remove pivot bolts from the mounting plate.
2. Remove the mounting plate from the adjustment screws.
3. Rotate mounting plate 180.
4. With pivot bolts removed in Step 1 fasten the mounting
plate to alternate position No. one.
5. Fasten mounting plate to the adjustment screws.
ALTERNATE POSITION TWO
The motor mounting plate, the pivot bolts and the adjustment
screws can be moved into a position similar to the one shown
as standard in 3 but under the other blower scroll. The frame-
work under each blower scroll has the same bolthole
arrangement.
ALTERNATE POSITION THREE
The motor mounting plate, the pivot bolts and the adjustment
screws can be moved into a position similar to the one
detailed in alternate position one but behind the other blower
scroll. The framework behind each blower scroll has the
same bolthole arrangement.
AIR DISCHARGE CONVERSION
LA360/LB360/LB480 AIR DISCHARGE
The LA300 LB360 and LB480 units are shipped for upflow
operation, but may be converted for any of the illustrated air
discharge patterns shown in 7 and 8. Convert as follows:
1. Remove the panels from the blower section.
2. Remove the Phillips machine screws located inside cas-
ing corner angles that hold the coil and blower sections
together.
3. Rotate the blower section for the desired air discharge
pattern.
NOTE: Before proceeding to step 4, see the section
on the blower motor mounting locations and
mount the blower motor in the desired position.
4. If accessory heating coils are used, mount heating coil
between cooling coil and blower sections. Screw fasten-
ing locations are the same for all sections and heating
accessories. If heating coils are not used, fasten coil
section to blower section with machine screws removed
in step 2.
5. Before replacing panels, see duct connections and drain
connections.
6. Replace panels.

66337-YIM-D-0206
10 Unitary Products Group
FIGURE 6 - VERTICAL AIRFLOW ARRANGEMENTS
FIGURE 7 - HORIZONTAL AIRFLOW ARRANGEMENTS
AIR
AIR
BLOWER
1
VERTICAL ARRANGEMENTS
EVAPORATOR
COIL
AIR
AIR
2
AIR
AIR
AIR
A I R
4
AIR
AIR
5
AIR
AIR
6
3
* IF REQUIRED, SOME AIR CAN
BE BROUGHT THROUGH THE
BOTTOM OF THE EVAPORATOR
SECTION.
* * *
* * *
AIR
AIR
AIR
AIR
AIR
AIR
AIR
AIR
AIR
AIR
AIR
AIR
78 9
11 12 10