Power And Control Wiring - York CHAMPION D2EB Installation Instructions Manual

POWER AND CONTROL WIRING

Field wiring to the unit must conform to provisions of the current
N.E.C. ANSI/NFPA No. 70 or C.E.C. and/or local ordinances.
The unit must be electrically grounded in accordance with local
codes or, in their absence, with the N.E.C./C.E.C. Voltage toler-
ances which must be maintained at the compressor terminals
during starting and running conditions are indicated on the unit
Rating Plate and Table 3.
The wiring entering the cabinet must be provided with me-
chanical strain relief.
A fused or HACR breaker disconnect switch should be field pro-
vided for the unit. If any of the wire supplied with the unit must be
replaced, replacement wire must be of the type shown on the wir-
ing diagram.
** = Minimum wire size of 18 AWG
wire should be used for all field
installed 24 volt wire.
PROGRAMMABLE
THERMOSTAT ONLY
* = Only required on units with
supplemental electric heat.
CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can
FIG. 2 - TYPICAL FIELD WIRING DIAGRAM
4
CONTROL WIRING
THERMOSTAT
UNIT TERMINAL STRIP
4 **
/
;
9
*
+
cause improper and dangerous operation. Verify proper operation after servicing.
POWER WIRING
REFER TO ELECTRICAL DATA
TABLES TO SIZE THE DISCON-
NECT SWITCH, WIRING &
OVERCURRENT PROTECTION.
Electrical line must be sized properly to carry the load. Each
unit must be wired with a separate branch circuit fed directly
from the meter panel and properly fused.
Refer to Figure 2 for typical field wiring and to the appropriate unit
wiring diagram for control circuit and power wiring information.
COMPRESSORS
Units are shipped with compressor mountings factory-adjusted
for shipping. CAUTION: Loosen compressor mounting bolts
half turn before operating unit.
NOTE:
HEAT ANTICIPATOR
4
SHOULD BE SET AT 0.25
AMPS FOR ALL MODELS.
/
;
24 VOLT TRANSFORMER
9
+
174065-YIM-A-0206
Unitary Products Group