| 摘要 |
A control system and method for space ventilation and air conditioning economizer operation are disclosed. An economizer hood ventilator and its control cente r, integrating the operation of other space heating ventilation and air conditioning apparatus, are further disclosed. This low cost economizer hood ventilator and its control center a re invented mainly for both existing and future residential houses to meet controlled fresh air ventilation requirements. The manual operated principal ventilation switch can override any other automatic ventilation controls. When ambient air is available for free cooling, the system works as air conditioning economizer.
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