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© STULZ GmbH – all rights reserved EN/06.2017/G18D
cyberair 3PrO cw2 Original instructiOns
5.3 Water piping connection
external water circuit
To seal the water circuit you must connect the unit to a chilled water ring mains, which contains either a chiller
or a dry cooler or cooling tower for the generation of cold water. If the water quality is insufficient, install a fine
mesh strainer at the water inlet of the A/C unit.
Connecting the A/C unit to the external system
The water connections end with an external thread.
• read the thread size and the diameter of the chilled water lines out of the
drawings in chapter 5.3.1 for Downflow units resp. 5.3.2 for Upflow units, to
establish the lines between the external system and the A/C unit.
• take the position of the connections out of these drawings, to conduct the
lines to the unit.
• remove the protective caps or sealing disks of the screwed connections.
Connection with external thread
notICe
Water remaining from the test run may escape when the protective caps
are removed.
• screw the lines of the external system to the lines of the unit respecting the designation at the unit (inlet/
outlet).
• insulate the water pipes with the diffusion tight insulating material, to prevent the introduction of ambient air
heat and the formation of condensate at the pipes.
notICe
Respect material compatibility in the whole hydraulic circuit, when installing additional
components.
