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035-18496-000-C-1102
Unitary Products Group 19
Check belt tension. Drive packages are supplied with fiber-
glass belts that must be properly tensioned at installation
because they do not stretch. The belt should deflect 3/16"
per foot of belt span with a 2 or 3-pound force. Alignment of
the resilient motor mount can be corrected by adjustment at
the slots on the end opposite the pulleys.
ELECTRICAL CONNECTIONS
The electric box ships complete with motor starter, transform-
ers, relays and terminal block for making field connections.
Remember: One air handlers with factory installed pump out
solenoids, wires to the solenoid must be field connected.
Refer to Figures 30 & 31 for Indoor Unit Wiring Diagrams.
Install a power supply to meet the requirements listed in
table 6.
Provide a disconnect switch and fusing as required.
Install interconnecting control wiring between condensing
section, evaporator blower and room thermostat.
Starters are shipped without overloads. These must be
ordered separately to match the selected motor used in the
air handler. See unit’s Technical Guide or price page for cor-
rect overload.
NOTE: For the 10HP 200/208-volt motors, install the
power wiring to the supply air blower through
the starter.
TABLE 6: ELECTRICAL DATA
UNIT
MODEL
HP FLA
VOLTAGE
(3PH-60HZ)
MIN
CIRCUIT
AMPACITY
MAX.
FUSE
SIZE
(Amps)
LA300
5
16.7 208 21 35
15.2 230 19 30
7.6 460 10 15
6.1 575 8 15
7.5
24.2 208 30 50
22 230 28 45
11 460 14 20
9 575 11 20
LB360
5.0
16.7 208 21 35
15.2 230 19 30
7.6 460 10 15
6.1 575 8 15
7.5
24.2 208 30 50
22 230 28 45
11 460 14 20
9 575 11 20
10
30.8 208 39 60
28 230 35 60
14 460 18 30
11 575 14 20
LB480
7.5
24.2 208 30 50
22 230 28 45
11 460 14 20
9 575 11 20
10
30.8 208 39 60
28 230 35 60
14 460 18 30
11 575 14 20
LB600
10
30.8 208 39 60
28 230 35 60
14 460 18 30
11 575 14 20
15
46.2 208 58 100
42 230 53 90
21 460 26 45
17 575 21 35
TABLE 7: MOTOR OVERLOAD ELEMENTS
*
*.
These units are equipped from the factory with a cor-
rectly sized motor starter; overload elements are not
factory supplied. Three elements required per unit.
MOTOR HP VOLTAGE MODEL NUMBER
5
208 2MP04704600
230 2MP04704600
460 2MP04704900
575 2MP04705000
7.5
208 2MP04703700
230 2MP04704500
460 2MP04704300
575 2MP04704000
10
208 2MP04701600
230 2MP04704100
460 2MP04704200
575 2MP04704300
15
208 2MP04704400
230 2MP04701700
460 2MP04704500
575 2MP04704600