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TRANE
LWHA Model Number Description
(KAEC Version)
L W
H
A
0
1
3
K
1
A
D
1
4
X
L
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20
Digit 1,2,3,4
L W H A
Low Height Air Handler
Digit 5,6,7
0 1 3
Unit Sizes
013
023
043
063
020
033
053
083
Digit 8
K
Minor Design Sequence:
K=First Design for LWHA_ME
Digit 9
1
Fan Drive Type / Motor MCLS,
1 = Belt Drive/IE
2 = Belt Drive/IE2
3 = Belt Drive/IE3
Digit 10
A
D = Direct Drive
Fan Motor kW. Refer Table
Digit 11
D
Electrical rating / Utilization Range : Volt/Phase/Hz.
B = 380V/ 3Ph/ 50Hz
C = 400V/ 3Ph/ 50Hz
D = 415V/ 3Ph/ 50Hz
F = 380V/ 3Ph/ 60Hz
Model
Digit 12
1
Fan Model
LWHA 013
LWHA 020
LWHA 023
LWHA 033
LWHA 043
LWHA 053
LWHA 063
LWHA 083
LWHA 113
LWHA 133
Digit 13
4
Coil Row
3 = 3 Row
6 = 6 Row
Digit 14
X
TURB Option
Digit 15
L
Coil Connection
Digit 16
2
Filter Type
Digit 17
0
Electric Heater
0 = None
A = 2.1kW, 1Step
B = 3kW, 1Step
C = 3.6kW, 1Step
D = 4.2kW, 1Step
E = 5.1kW, 1Step
Digit 18
1
Drain Pan
Digit 19
0
Future Use
Digit 20
A
Service Indicator, A = First Design
2
0
1
0
A
BELT DRIVE
113
Low Static
Std.Static
High Static
133
LWHA 013
A=0.18
B=0.37
C=0.75
LWHA 020
A=0.18
B=0.37
C=0.75
LWHA 023
B=0.37
C=0.75
D=1.1
LWHA 033
C=0.75
D=1.1
E=1.5
LWHA 043
C=0.75
D=1.1
E=1.5
LWHA 053
D=1.1
E=1.5
F=2.2
LWHA 063
E=1.5
F=2.2
G=3
LWHA 083
E=1.5
F=2.2
G=3
LWHA 113
F=2.2
G=3.0
H=4.0
LWHA 133
G=3.0
H-4.0
I=5.5
K = 400V/ 3Ph/ 60Hz
H = 460V/ 3Ph/ 60Hz
5 = 220-240/ 1Ph/ 50Hz (For Direct Drive)
Belt Driven
Direct Driven
1 = KAT 7-7 S
E = KDD 9/7T 350W
1 = KAT 7-7 S
L = KDD 9/7T 550W
2 = KAT 9-7 S
F = KDD 9/9T 550W
2 = KAT 9-7 S
G = KD2 9/7T 600W
3 = KAT 9-7 S2
H = KD2 9/7 750W
4 = KAT 10-8 S2
I = KD2 9/9 1550W
4 = KAT 10-8 S2
NA
5 = KAT 12-9 S2
NA
6 = KAT 15-11 S2
NA
6 = KAT 15-11 S2
NA
4 = 4 Row
5 = 5 Row
7 = 4+1 Row
8 = 6+1 Row
X = None
Y = Yes
L = Left
R = Right
2=2" Washable, G3: EN779
X = None
S = Special
F = 6.6kW, 1Step
L = 4.2kW, 2Step
R = 13.2kW, 2Step
G = 7.5kW, 1Step
M = 5.1kW, 2Step
S = 15kW, 2Step
H = 9.6kW, 1Step
N = 7.8kW, 2Step
T = 17.4kW, 2Step
I = 10.2kW, 1Step
O = 8.4kW, 2Step
U = 20.4kW, 2Step
J = 3kW, 2Step
P = 10.2kW, 2Step
K = 3.6kW, 2Step
Q = 12.6kW, 2Step
1 = GI
2 = Stainless Steel
1
Unit Location Recommen-
dations
When selecting and preparing of the
unit operating location, consider the
following:
Direct
1. LWHA shall be installed for hori-
Drive
zontal application only.
K=0.35
2. Available power supply must agree
L=0.55
L=0.55
with
electrical
data
M=0.6
nameplate.
N=0.75
3. Consider the weight of the unit .
Q=1.55
4. Allow sufficient space for the recom-
mended clearances. Refer to
Figure 1.
5. Installer must provide suspension
rods (threaded) for ceiling mounted
unit.
6. All unit must be installed level.
7. Coil piping and condensate drain
requirements must be considered.
Allow room for proper ductwork and
electrical connections. Support all
piping and ductwork independently
of unit to prevent excess noise and
vibration.
Lifting / Rigging Recom-
mendations
Before preparing the unit for lifting,
estimate the approximate center of
gravity for lifting safety. Because of
placement of internal components, the
unit
weight
may
distributed, with more weight in the coil
area. Before hoisting unit into position,
be sure that a proper rigging method
is used, with straps or slings and
spreader bars for protection and safety
during lifting. Always test-lift the unit to
determine exact unit balance and
stability before hoisting it to the
installation location.
Unit Installation
WARNING
!
DO NOT LIFT THE UNIT WITHOUT
TEST-LIFTING FOR BALANCE AND
RIGGING. DO NOT LIFT THE UNIT
ABOVE PERSONNEL. FAILURE TO
OBSERVE THESE WARNINGS MAY
RESULT IN PERSONAL INJURY,
DEATH OR EQUIPMENT DAMAGE.
on
unit
MOUNTING
Unit Suspension - Typical
Use suspension mouting kit to isolate
the unit from structure. This is usually
accomplished through the use of
spring or rubber type vibration
isolators. The units are designed to be
suspended from ceiling on threaded
rod size 1/2"(M12), furnished by the
installing contractor. Four external
mounting lugs are provided at bottom
of the unit. The false ceiling opening
must be large enough for future
maintenance.
WARNING
!
CHECK THAT THE SUPPORTING
STRUCTURE IS STRONG ENOUGH
TO SUPPORT UNIT WEIGHT.
be
unevenly
To install unit complete the
following:
1. Determine the unit mounting hole
dimensions. Prepare the hanger
rod isolator assemblies (provided
by installing contractor) and install
them in the selected area. Threaded
rods are recommended for leveling
the unit.
2. Hoist the unit to the suspension rods
and attaché with washers and lock
nut. Refer to figure 2, for specific
mounting details.
3. Level the unit for proper coil drainage
and condensate removal from drain
2
®
TRANE
pan. Refer to drain trap sketch in the
piping section.
4. Connect the ductwork to the unit.
Auxiliary Drain Pan
A field fabricated auxiliary drain pan
may be installed under the unit, and
when condensate overflow may cause
damage. This drain pan will eliminate
any excess condensation that may be
due to extreme humidity or an
obstructed drain in the primary drain
pan. Drain lines from this pan must be
installed, but should not be connected
to the primary drain line from the unit.
Isolate the auxiliary drain pan from both
the air handler and the structure.
Air Filters
LWHAs are shipped with 2" Washable
filters installed in the unit as standard.
For filter dimension and quantity, refer
to General Specification. Filter loading
method is sliding type and accessible
from both sides.
Duct Connections
The Inlet and Discharge air duct
connections to the unit should be
made
with
a
flexible
material
minimizing noise and vibration.
Typically, about 3 inches(75mm) is
needed for this connection to rigid
ductwork.
Duct turns and transitions must be
made carefully to minimize air friction
losses. Avoid sharp turns and use
splitters or turning vanes when elbows
are necessary. Discharge (supply)
ductwork should run in a straight line,
unchanged in size or direction, for at
least a distance of 1-1/2 fan diameters
(see General Specification, for fan
diameter).
The return duct should be sized to the
same dimensions as the return inlet
the return inlet of the unit.
All ductwork should be properly
insulated to prevet condensation and
heat loss.
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