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sun coast Joined: 13 Aug 2007 Posts: 1	Posted: Mon Aug 13, 2007 9:56 pm    Post subject: passive solar heating question Hello, thanks for being there... I have a simple question. I am converting a room into a greenhouse. This room has an existing 14" duct at ground level that feeds the FAU heater, which connects ducting to all rooms in this large home,and is operated via thermostat. My question is this: When a sensor in the greenhouse indicates enough heat, is there a by-pass switch /control that I can install that will allow the blower to send the greenhousee air through the house, by-passing the heating element of the FAU??? In early morning, the thermostat would trigger the heating element because the greenhouse has no heat at that time. And, second question: WHERE can I buy this by-pass switch, OR what other options do i have other than a manual switch that over-rides the FAU, but still allows me to activate the blower to distribute this hot air through the house? Thank you so much for a response, as I'm stuck... John
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csintexas millennium club Joined: 06 Feb 2006 Posts: 1716 Location: USA	Posted: Tue Aug 14, 2007 6:13 am    Post subject: Your basically talking about a duel fuel system with solar heat as one of the fuels. Other than manually operating it you might try here: http://www.smarthomeideas.com/hvac_ideas.html _________________ Chris Stewart Modern Texas Home Project
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ArchitectureWeek DesignCommunity Forum Index » Green Building Forum

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