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Posted by rking on May 11, 2007, 12:50 am
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> >>I sympathize with your problem. Yes the guys are right...too often a 2
> >>storey house with only one system works poorly. It amazes me that when you
> >>consider the cost of a house that the HVAC Systems is most are archaic in
> >>this day and age...Ideally you should have separate zoning...
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> > Ding! There's a few more pieces involved with multiple zones than several
> > thermostats.
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> >> Having said that, it is not a perfect world and we all dont have money to
> >> re-engineer the system...Here is a trick that I have used with customers
> >> in your situation and all are happy with the inexpensive solution and
> >> excellent results....
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> > I doubt it.
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> >> Go and purchase a Honeywell or Carrier thermostat that has a remote
> >> temperature sensor option on it..At that time, you purchase one
> >> additional sensor so now you have one thermostat with 2 sensors. Locate
> >> one temperature on the main floor wherever you like...Locate the other
> >> one upstairs where you like...You wire a wall switch in somewhere that
> >> switches the sensors...a three way switch from Home Depot works for
> >> this...in the daytime, the switch is connected to the main floor sensor
> >> so the AC unit will control to satisfy the main floor...When you go to
> >> bed, you flip the switch and the thermostat is now looking at the sensor
> >> upstairs and ignoring the main floor...Next morning flip it back...
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> > So, you don't understand that the remote sensor on most any thermostat
> > that a HoMoaner will likely be able to purchase is for dsplaying the
> > temperature, and has no effect on determining whether a setpoint is
> > reached? Or, are you trying to explain to him that he needs to open up the
> > thermostat - I'll use a T8611 for an example - and disconnect the internal
> > temperature sensor, install a switch in the thermostat, and connect an
> > (aquired from who knows where because the internal sensor is a diode, and
> > the external sensors are thermistors) remote sensor to it, so he can
> > switch between them. What about the fact that he's trying to cool the
> > second floor from the first floor. You don't think he'd have to get it a
> > little nippley downstairs before upstairs even begins to feel cool? He
> > didn't describe whether there's any ductwork for the second floor as far
> > as I saw in his post.
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> >> Problem solved...minimal cost...of course you will hear lots of heckling
> >> from this group...but give it consideration...good results for about
> >> $150.00...
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> > Actually, a decent Window shaker would go for a bit more than that and
> > would be more likely to resolve the issue.
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> No, I am not trying to explain to him to open up the thermostat and
> disconnect the sensor... As I indicated, he should purchase a thermostat
> that has remote sensing capabilities such as a Honeywell Vision Pro TH
> Series (TH8110U1011) with 2 remote sensors (T7189U1005) and a swithing
> arrangement to switch the two sensors. Yes, I realize that it may get a
> little nippley downstairs, but he has the option and flexibility to program
> his new programmable thermostat to find a setpoint that works...
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> Again, I realize this is not an ideal situation, and I also realize that
> there is more to zoning than thermostats. He is not asking for a window
> shaker. I agree, that is a good solution. He is simply asking how to use a
> separate thermostat for two locations, not how to re-engineer or re-design
> his home HVAC system. If he asked that question, I would certainly have some
> good advice for him...Keep it simple...- Hide quoted text -
>
> - Show quoted text -
Thanks for the idea Steve. Since 4 wires go into my thermostat, I will
buy 4 pole toggle switch and identical thermostat so I can switch
between the 2 thermostat. With the switch, only 1 thermostat is use at
any given time. Hopefully, my cost will bring it down to $80. Again,
appreciate your help.
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