20 11.8.22 © STULZ USA – all rights reserved
CYBERWALL™ INSTALLATION, OPERATION AND MAINTENANCE MANUAL
Inter-Module Cable Connections
Cable harnesses connect between the top and bottom modules for all power and control signal connections.
When shipped, the electrical cables are coiled inside the bottom electrical enclosure. Perform the following
steps to connect the modules. After assembly, feed the harnesses from the bottom module electrical box
(Figure 9) into bottom of the auxiliary electric box, and make connections to the appropriate distribution and
terminal blocks in accordance with the unit wiring diagram.
FEED CABLES
THROUGH
PORTS TO
TOP UNIT
BOTTOM MODULE
Figure 9. Inter-Module Cable Routing
External Connections
Chilled Water Piping Connections
Pipe connections for the chilled water supply and return can be made using rolled groove couplings,
copper sweat, or threaded copper connections. See the installation drawing provided with your unit for pipe
connection sizes. Field piping is not necessarily the same size as the unit’s pipe connections. Piping should
be sized to match the system pressure drop and flow capacity, and may require reducing fittings to match the
connection size on the air conditioner.
CAUTION
When installing and filling chilled water loops, all air must be bled from the piping system.
NOTE
A 20 mesh stainless steel strainer (865 micron opening size) is recommended to be installed in the
supply line. The strainer screen should be cleaned periodically.
NOTE
If newly installed chilled water supply and return piping is used, clean the piping system prior to
connecting it to the unit. If solvents/cleaning solutions are used, ensure they are completely flushed from
the piping before connecting it. Failure to do so could result in equipment problems.
NOTE
Chilled water lines should be insulated to prevent condensation from forming on the pipes.
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