Installation guide

ELECTRICAL WIRING
ELECTRICALSHOCK HAZARD
Failure to follow this warning could result in personal iniury
or death.
Before installing, modifying, or servicing system, main
electrical disconnect switch nmst be in the OFF position.
There may be more than 1 disconnect switch. Lock out and
tag switch with a suitable warning label.
The supply voltage must be 208/230 volts (197 volt minimum to
253 volts naaxinmm) 60 Hz single phase.
Outdoor units are approved for use with copper conductors only.
Do not use alunfinum wire.
Refer to unit rating plate for minimum circuit ampacity and circuit
protection requirements.
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.
ELECTRICALSHOCK HAZARD
Failure to follow this warning could result in personal injury
or death.
Unit cabinet must have an uninterrupted or unbroken ground
to nfininfize personal iniury if an electrical fault should occur.
The ground may consist of electrical wire or metal conduit
when installed in accordance with existing electrical codes.
Wiring Connections
Make all outdoor electrical supply (Line Voltage) connections with
rain-tight 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
Fig. 8.
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 Fig. 9 for low voltage wiring
examples.
All wiring must be NEC Class 2 and must be separated from
inconfing power leads.
NOTE: Use No. 18 AWG (American Wire Gage) color-coded,
insulated (35 °C nfininmm) wire. If thermostat is located more than
100 feet (31 m) from unit as measured along the control voltage
wires, use No. 16 AWG color-coded wires to avoid excessive
voltage drop.
DISCONNECT
PER NEC AND/OR
LOCAL CODES
FIELD POWER
WIRING
1
CONTACTOR
L.1 @
_- ®
[ 23 or 13
FIELD GROUND
-g)
WIRING ] GROUND
LUG
A10476
Fig. 8 - Electrical Supply (Line Voltage) Connections
A/C Typical
THERMOSTAT FURNACE
24VACHOTE}"------Q
24VACCOM[D'------E]--
HEATSTAGE1....-El
COOLSTAGE1...."42]"'
,NDOORFANEl--------El
AIR
CONDITIONER
A/C Typical AIR
THERMOSTAT FAN COIL CONDITIONER
24 MAC HOT [_,
24 MAC COM D"
HEAT STAGE 1 [_
COOL STAGE 1 [_
INDOOR FAN [_'
LEGEND
24-V FACTORY WIRING
24-V FIELD WIRING
C_ FIELD SPLICE CONNECTION
CONTACTOR
Fig. 9 - Typical Thermostat Connections
(See Thermostat Installation Instruction
for specific unit combinations)
A97368
_,a4B
A02326