19
figure 29 - Remove Control box Cover
rating Plate
figure 30 - electrical Connections
l2
High-voltage Cable
l1
Ground Lug
Ground Wire
low-Voltage
Connections
general electrical Requirements
Electrical wiring must be in accordance with all electrical
codes. In absence of such requirements to the National
Electrical Code (NEC).
WARnIng
Electrical shock hazard. Turn OFF electrical power
supply before making electrical connections. Failure
to do so could result in death or serious injury.
!
1.
Standard unit voltage is 208/230v (60Hz, 1Ph). verify
model’s electrical requirements from rating plate.
2.
Have wires capable of carrying maximum load current
under non-fault conditions at stipulated voltages.
3.
Avoid large voltage drops on cable runs, particularly in
low-voltage wiring.
4.
Use correct cable size to insure voltage drop of less
than 1 volt in control wiring.
5.
When refrigeration pipe work is complete electrical
supply can be connected.
6.
Low-voltage wiring must be at least 18 AWg.
Connect Wiring
1.
Loosen four screws on front of control box cover. Slide
cover up and off to access high-voltage wiring. See
Figure 29.
2.
Rating plate is located on outside of control box cover.
3.
Each unit must have separate branch circuit protected
by fuse or breaker. Check rating plate for circuit
ampacity and breaker or fuse size. Use only HACR type
breakers. Select proper wire for ampacity rating.
4.
Connect local disconnect switch within 3 feet of unit.
High-Voltage Electrical Wiring
1.
Inspect existing wiring for cut or frayed wires. Replace
if found. See Figure 30.
2.
Route cable through hole in control box for high-
voltage electrical wiring. Connect power wire to L1 and
neutral wire to L2 at power connector location.
3.
Connect ground wire to ground lug or lead at same
location in control box.
Terminate ALL unused wires with wire nut or crimp
connector.
eleCTRICAl WIRIng
