Old McQuay Chiller Control Panel | Electro-Mechanical Controls

Old McQuay Chiller Control Panel – Electro-Mechanical ControlsOld McQuay Chiller Control Panel - This panel is part of the controls for an older McQuay chiller. New chillers whether they be McQuay, Trane, York, or Carrier chillers still require these types of controls in them to make them work.

This part of this electro-mechanical control panel consists of contactors and switches (both manual and automatic) for electro-mechanical control of this chiller. To the right is the main power which feeds the unit with three-phase main power. (more…)

DDC Integration | HVAC DDC Controls

DDC Integration – HVAC DDC ControlsDDC Integration | HVAC DDC Controls - This is an electrical project which is in the process of changing the old control system to a new DDC control system. Installing new controls in an occupied building takes plenty of planning to avoid interruption in air conditioning or heating. The old control system was a basic electro-mechanical control system which little more than just basic building management control.

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