Transcription of Steven T. Taylor Changeover Controls Coils
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Steven T. Taylor Changeover Controls Coils
ASHRAE JOURNAL AUGUST 201766 COLUMN ENGINEER S NOTEBOOKS teven T. TaylorBY Steven T. Taylor , , FELLOW ASHRAEC hangeover Controls & CoilsSystems such as radiant floors, radiant ceilings, and chilled beams are often designed to have both heating and cooling capability and thus must have connections to both the hot water and chilled water systems. This month s column addresses how to design the Changeover Controls that manage the switch from one hydronic system to the other. Also addressed is the use of Changeover Controls to allow a single coil in an air-handling or fan-coil system to provide both heating and cooling, a design option that can reduce both first costs and energy costs.
Changeover Controls Coils. Systems such as radiant oors, radiant ceilings, and chilled beams are often designed ... to both the hot water and chilled water systems. This month’s column addresses how to design the changeover controls that manage the switch from one hydronic system to ... ators are spring return or electronic fail-safe type ...
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