23 © STULZ USA – all rights reserved 11.8.22
CYBERWALL™ INSTALLATION, OPERATION AND MAINTENANCE MANUAL
The unit is provided with terminals for all required field-wiring. Refer to the electrical schematic supplied with
the unit when making power and control field-wiring connections. It is important to identify the options that
were purchased with the unit in order to confirm which field control connections are required.
WARNING
Verify power is turned off before making connections to the equipment.
NOTE
All wiring must conform to local and national electrical code requirements. Use only copper conductors.
Wiring terminations may become loose during transit of the equipment; therefore, it is required to verify
that all wiring terminations are secure.
CAUTION
Improper wire connections may result in damage to the unit.
It is important to verify that the main power supply coincides with the voltage, phase and frequency
information specified on the system nameplate. The supply voltage measured at the unit must be within
±10% of the voltage specified on the system nameplate.
Pilot holes for entry of power and control wiring are located in the top of the cabinet. If necessary, these
holes may be enlarged to properly fit the connector. See the installation drawing provided with your unit for
recommended entrance hole sizes and locations.
Route facility power into the electric box and terminate the phase wires at the main power disconnect
switch as shown in the electrical drawing. An equipment ground bar is provided in the main electric box for
termination of an earth ground.
CAUTION
Prior to unit operation, an adequate earth ground must be connected to the unit.
Electrical Box Components
Components in the main and auxiliary electrical boxes are labeled with reference designators. See the unit
electrical drawing provided in the data package to identify the components.
Note that power to the fans can be manually controlled at the motor starter protectors.
CAUTION
Do not connect any additional loads to the factory supplied control transformers. Connecting additional
loads to a control transformer may overload the transformer.
Optional Equipment
Additional control conductors may be required depending on the options purchased with the equipment.
Refer to the electrical drawing supplied with your unit to determine the total number of interconnecting
conductors required for your system. It is important to note that control transformer(s) supplied with the
equipment are sized and selected based upon the expected loads for each system.
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