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Air cooled liquid chillers and reverse cycle air/water heat pumps ...

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INTEGRATED HYDRONIC UNIT (Optional).<br />

Compact PLUG <strong>and</strong> PLAY units.<br />

NECS has been designed to reduce installation work to a minimum.<br />

The integrated hydronic unit incorporates all the hydraulic components, thus optimising installation space,<br />

time <strong>and</strong> costs.<br />

The integrated hydronic unit comprises:<br />

• storage tank<br />

• circulation pump with composite impeller<br />

• pre-mounted Y-shaped <strong>water</strong> filter with stainless steel mesh<br />

• <strong>water</strong> flow switch<br />

• pump inlet pressure gauge<br />

• output flow adjustment valve<br />

• safety valve<br />

• expansion tank<br />

• <strong>air</strong> vent<br />

• <strong>water</strong> drain.<br />

A circulation pump with a two-pole electric motor <strong>and</strong> an elevated useful static head is available<br />

for all sizes.<br />

Pumps with a low useful static head <strong>and</strong> a 2- or 4-pole electric motor are available for units with four<br />

compressors (NECS xxx4) in order to more fully adapt the unit to system requirements in terms of flow<br />

rate/head. On request, the hydronic assembly can be supplied with two circulation <strong>pumps</strong>, one of which<br />

backing up the other, featuring a programmed rotation schedule <strong>and</strong> automatic swap-over should the<br />

working pump fail.<br />

In this case, the hydronic assembly is fitted with a check valve in order to ensure the unit is installed <strong>and</strong><br />

operated correctly.<br />

Hydronic unit rendering

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