Daikin DCG Series Service Instructions Manual page 24

PRODUCT DESIGN
HIGH VOLTAGE !
T
O AVOID PERSONAL INJURY OR DEATH DUE TO ELECTRICAL
,
SHOCK DO NOT TAMPER WITH FACTORY WIRING
INTERNAL POWER AND CONTROL WIRING OF THESE UNITS
-
ARE FACTORY INSTALLED AND HAVE BEEN THOROUGHLY
. C
TEST PRIOR TO SHIPMENT ONTACT YOUR LOCAL
REPRESENTATIVE IF ASSISTANCE IS REQUIRED
T
O PREVENT DAMAGE TO THE WIRING
. F
EDGES OLLOW NATIONAL ELECTRICAL CODE AND ALL LOCAL CODES
. D
AND ORDINANCES O NOT ROUTE WIRES THROUGH REMOVABLE
.
ACCESS PANELS
C
ONDUIT AND FITTINGS MUST BE WEATHER
.
ENTRY INTO THE BUILDING
For unit protection, use a fuse or HACR circuit breaker that
is in excess of the circuit ampacity, but less than or equal to
the maximum overcurrent protection device. DO NOT EX-
CEED THE MAXIMUM OVERCURRENT DEVICE SIZE
SHOWN ON UNIT DATA PLATE.
All line voltage connections must be made through weather-
proof fittings. All exterior power supply and ground wiring
must be in approved weatherproof conduit.
The main power supply wiring to the unit and low voltage
wiring to accessory controls must be done in accordance
with these instructions, the latest edition of the National
Electrical Code (ANSI/NFPA 70), and all local codes and
ordinances. All field wiring shall conform with the tempera-
ture limitations for Type T wire (63°F/35°C rise).
The main power supply shall be three-phase, three wire. The
unit is factory wired for the voltage shown on the unit's data
plate.
NOTE: If supply voltage is 208V, all leads on primary of
transformer TRANS1 must be moved from the 230V to the
208V tap.
Main power wiring should be sized for the minimum wire
ampacity shown on the unit's database. Size wires in
accordance with the ampacity tables in Article 310 of the
National Electrical Code. If long wires are required, it may be
necessary to increase the wire size to prevent excessive
voltage drop. Wires should be sized for a maximum of 3%
voltage drop.
T
O AVOID PROPERTY DAMAGE OR PERSONAL INJURY DUE TO FIRE
.
ONLY COPPER CONDUCTORS
24
WARNING
. T
HE
.
CAUTION
,
PROTECT WIRING FROM SHARP
CAUTION
-
TIGHT TO PREVENT WATER
CAUTION
T
O PREVENT IMPROPER AND DANGEROUS OPERATION DUE TO WIRING
,
ERRORS LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING
. V
CONTROLS ERIFY PROPER OPERATION AFTER SERVICING
NOTE: A weather-tight disconnect switch, properly sized
for the unit total load, must be field or factory installed. An
external field supplied disconnect may be mounted on the
exterior panel.
Ensure the data plate is not covered by the field-supplied
disconnect switch.
• Some disconnect switches are not fused. Protect the
power leads at the point of distribution in accordance with
the unit data plate.
• The unit must be electrically grounded in accordance
with local codes or, in the absence of local codes, with
the latest edition of the National Electrical Code (ANSI-
NFPA 70). A ground lug is provided for this purpose. Size
grounding conductor in accordance with Table 250-95 of
the National Electrical Code. Do not use the ground lug
for connecting a neutral conductor.
• Connect power wiring to the middle contactor within the
main control box or to electrical power block if equipped.
NOTE: On 2 Speed Models, with a V in the 11th position of
the model number, a power block is provided.
,
USE
CAUTION
.
RC CF
RC CF
6 4
2
1
3
POWER
WIRING
THERMOSTAT
WIRING