发明授权
US06450409B1 Method and apparatus for wiring room thermostat to two stage HVAC system
失效
配线室温控器到两级HVAC系统的方法和装置
- 专利标题： Method and apparatus for wiring room thermostat to two stage HVAC system
- 专利标题（中）： 配线室温控器到两级HVAC系统的方法和装置
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申请号： US09714029申请日： 2000-11-15
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公开(公告)号： US06450409B1公开(公告)日： 2002-09-17
- 发明人: Mitchell R. Rowlette , Walter H. Bailey , Mark E. Miller
- 申请人： Mitchell R. Rowlette , Walter H. Bailey , Mark E. Miller
- 主分类号： G05D2300
- IPC分类号： G05D2300
摘要：
A control used in a two stage HVAC system has a power supply from a 24 VAC transformer which is full wave rectified (D1, D2, D3, D4) to create DC voltages for a microcontroller (U1) and relays (K1-K3). All of the control information needed for the two stage control system is sent to the control from a room thermostat (12) having first and second stage cooling signal terminals (Y1, Y2) over a single line by connecting a diode between the Y1, Y2 terminals creating separate microprocessor recognizable signals.
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