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ELECTRICAL WIRING
4&
WARNING
ELECTRICAL SHOCK HAZARD
Failure to turn off the main (remote) electrical discon-
nect device could result in personal injury or death.
Before
installing,
modifying
or servicing
system,
turn
OFF
the
main
(remote)
electrical
disconnect
device.
There may be more than one disconnect device.
Single phase supply voltage must be 208/230 volts (197
volt minimum to 253 volts maximum) 60 Hz.
Outdoor
units
are
approved
for
use
with
copper
conductors only. Do not use aluminum wire.
Refer to unit rating plate for minimum circuit ampacity and
circuit protection requirements.
For
3-phase
units,
refer
to
unit
rating
plate
for the
required
supply
voltage.
Depending
on
the
model,
required supply voltage will be:
208/230 V, 3-phase, 60 Hz
or
460 V, 3-phase, 60 Hz
Grounding
Permanently ground unit in accordance with the National
Electrical Code
and
local codes or ordinances.
Use a
copper conductor of the correct size from the grounding
lug in control box to a grounded connection in the service
panel
or a properly
driven
and
electrically
grounded
ground rod.
Wiring Connections
Make
all
outdoor
electrical
supply
(Line
Voltage)
connections
with
raintight
conduit
and
fittings.
Most
codes require a disconnect switch outdoors within sight of
the unit. Consult local codes for special requirements.
Route
electrical
supply
(Line Voltage)
wiring
through
knockout hole in bottom of Control Box. Connect wires to
Contactor and Ground Lug according to Wiring Diagram
on unit. Also refer to Figure 9.
For 3-phase 208/230V and 460V - Connect two power
wires to Contactor and one power wire to Blue lead wire
(use wire nut). Connect ground wire to Ground Lug. Refer
to Wiring Diagram on unit and Figure 10.
Thermostat Wiring Connections
Route
thermostat
wiring
through
rubber
grommet
in
bottom
of Control
Box.
Low
voltage
lead
wires
are
provided in the control box for connection to thermostat
wires (use wire nuts). Refer to Wiring Diagram on unit and
Figure 11 for low voltage wiring examples.
NOTE:
Use
No.
18
AWG
(American
Wire
Gage)
color-coded,
insulated
(35
°C
minimum)
wire.
[ff
thermostat is located more than 100 feet (81m) from unit
as measured along the control voltage wires, use No. 16
AWG
color-coded wires to avoid excessive voltage drop.
Figure 9
Electrical Supply (Line Voltage) Connections
DISCONNECT
PER NEC AND/OR
LOCAL CODES
TCS
CONTACTOR
"4
11
0
"FELDPOWER
fo
8
WIRING
L2
weet steer eee TB eee eee OD
®
23 or 13
FIELD GROUND
inne
oe ©
GROUND
LUG
Figure 10
3-Phase 208/230V and 460V Electrical Supply (Line Voltage) Connections
DISCONNECT
PER NEC AND/OR
LOCAL CODES
SY
CONTACTOR
11.0
wee eee ee eee eee
LI ---L®
&
FIELD POWER
L3
veeeec reese AB eee eee OD
®
WIRING
13
e e e
eee eee eee l2__
\
]
BLUE LEAD WIRE
FIELD GROUND
Wining PTT
@
GROUND
LUG
10
421 01 6400 00
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