CWS Basic 121-161-201-251

3- FRESH WATER CIRCUIT 3.1- 1Fresh water circuit connections

Follow the installation schematic, with particular regard to the sense and position of components.Keep in mind the accessibility of components for the following steps of installation and also formaintenance. Respect the flow sense marked on the unit. Keep accessible the purging valve installed on the fresh water return. Respect the nominal diame-ters of the manifold.Manifold: install it in an accessible position, if possible with a certain heel (purging valve higher).Check that each calibrating valve (if installed) of the manifold is fully open.Expansion tank: respect the schematic. Connecting port must be upwards to drain out of it. Fresh water pump: respect the layout schematic. Fresh water circuit: keep in mind that the easiest and shortest is the best.Theorethically any "high" point in the circuit must have a purging valve. Siphoning and "up-and- down" must be avoided as anyway they make the air purging difficult and trap air.Fan coil: respect the flow sense. Each fan coil is equipped with a purging valve that must be acces-sible both at installation and also for maintenance.

3.2- Flow switch (option)

This item must be installed on the fresh water manifold. It must be accessible for maintenan- ce and calibration. The flow switch is needed as a safety device which cuts out the compressor if the fresh water circulation stops or is not enough. The flow must be electrically connected to the electrical box (two wires cables and ground connection), as specified in the electrical schematic. Page
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