condenser staging

Variable Speed ECM Condenser Fan Motors | HVAC Refrigeration

[caption id="attachment_3405" align="alignleft" width="151"]Variable Speed ECM Condenser Fan Motors - High SEER Trane Condenser Variable Speed ECM Condenser Fan Motor This high SEER Trane condenser uses an ECM variable speed fan motor to modulate the speed of the fan[/caption] Variable Speed ECM Condenser Fan Motors are used in condensers for the high efficient models so that the fan speed for the condenser can be modulated according to the load of the system. The ECM fan motors are used in condensers that either have a modulating compressor or condensers that have two compressors where one compressor is small and one compressor is large. The ECM motor adds to the efficiency of the system by modulating the condenser fan motor to match the compressor use needed to satisfy the load.

Variable Speed ECM Condenser Fan Motors - Peak Operation

On very hot days you need more air conditioning capacity to satisfy the heating load demand put on your home in the summer. In milder weather you do not need to run the air conditioner at 100% to satisfy the higher demand. HVAC equipment manufacturers have introduced systems that have the ability to run in two-stages so that on the hotter days you can satisfy the demand and on the cooler days you can run the system at a lower setting thereby using less energy. (more…)
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