Trane SCXG-SVX01B-EN manual general Operation information, Condenser Condenser, Economizer V2

general

Operation information

economizer valve modulates, thus water flow through the unit modulates. If the water is cool enough for economizing, but mechanical cooling is also required, the economizer valve fully opens to establish full water flow through the condensers. Whenever the water is too warm for economizing and there is a call for cooling, the economizer valve fully closes and the bypass valve fully opens, establishing full water flow through the condensers. Full water flow is always maintained through the condensers when mechanical cooling is required. Both valves close whenever cooling is not required, and in the event of a power failure.

Condenser 1

Condenser 2

V2

Condenser 1

Condenser 2

Figure O-GI-3. Basic water piping, constant water flow

Figure O-GI-4. Intermediate water piping, variable water flow

V1

Economizer

V2

Condenser 1

Condenser 2

Figure O-GI-5. Intermediate piping with waterside economizer, variable or constant water flow

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