J&E Hall JEHSD-0400-B3-M-3, Technical Manual

Page: 16 / 44

Issue: 01.08.2020 Page 16
Installation
Electrical
Mains cable type and sizing must be selected for the particular application and the electrical installation should
conform to the current local standards.
•
Cables to the condensing unit should wherever possible be routed through the cable glands supplied on the rear of the
units.
•
Connect the mains supply to the units as per the wiring diagrams on pages 32 – 33.
To gain access to the electrical box, turn the mains isolator switch on the end of the unit to the OFF position, loosen the screws
on the left hand side of the door and open door. The electrical box is located behind the door. Remove the screws in the electrical
box cover to access components.
Important Note:
The mains electrical supply to the condensing unit must be via a suitable motor rated circuit breaker or fuse. A
mains isolator is fitted to all condensing units therefore an additional isolator is not required unless site
conditions or regulations dictate differently.
J & E Hall Fusion Digital Scroll condensing units require a 400 volt / 3 phase / 50Hz supply, which must include
a Neutral and an Earth. These systems are not suitable for any other supply voltages (other than a deviation of
+/- 10% of the above values) and are not suitable for 60Hz supplies.
The three phase supply must be connected to ensure that the compressor motor rotates in the
correct direction. Please see note on page 24.