Heatcraft Refrigeration Products II - Manual (Page 12)

12
Field Wiring
The field wiring should enter the areas as provided on the unit. The wiring diagram for each unit is
located on the inside of the electrical panel door. All field wiring should be done in a professional manner
and in accordance with all governing codes. Before operating unit, double check all wiring connections,
including the factory terminals. Factory connections can vibrate loose during shipment.
1. The nameplate on the unit is marked with the electrical characteristic for wiring the unit.
2. Consult the wiring diagram in the unit cooler and in the condensing unit for proper connections.
3. Wire type should be of copper conductor only and of the proper size to handle the connected load.
4. The unit must be grounded.
5. For multiple evaporator systems, follow the wiring diagrams for multiple evaporator systems carefully.
This will assure complete defrost of all evaporators in the system.
6. If a remote defrost Timer is to be used, the Timer should be located outside the refrigerated space.
** Hoshizaki ice machines
require a 115 volt relay
which must be field supplied
replacing the factory relay.
WARNING : All wiring must be done in accordance with applicable codes and local ordinances.
Note: Control wiring from the Ice Machines must be connected
to the relays in the MCCU Control Panel to properly energize condenser fans.
Figure 12.
Relay # Remote Unit Voltage
R4 Ice Machine 208-240**
Table 3. Fan Cycling Relay