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The DUROZONE 35229 SMZ-AC is a simple auto changeover zoning system incorporating individual thermostats and zone dampers to provide comfort and economy. It's a first call - first served system; if a zone calls for cooling, heating calls are locked out and the system will satisfy all cooling calls.
The SMZ-AC ensures efficient climate control by prioritizing the first call, whether for heating or cooling, and managing zone dampers accordingly.
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