[Hai-users] Multiple Thermostats per zone

Rutherford, Austin Austin.Rutherford at cognos.com
Fri Jul 28 12:47:15 CDT 2006 

Thanks for your advice.  Here are a couple thoughts in response:

- I am thinking a hour or two on the timer versus five minutes because
people can be pretty still while watching the movie (the berklines are
mighty comfortable) and I'd hate for that not to allow "occupancy" state
to be maintained.  If you have any thoughts on this let me know!

- Unless I am missing something, I don't think I'd need to turn it on
1-2 before because the "idle" temp is always consistent with the other
temps in the basement.  Its just the added heat of 6-8 bodies,
projector, and amps that cause the heat to build up over the course of a
two hour movie(not to mention a 2.5 hour movie - it gets real toastie by
then!)

Have a great weekend,
Austin

-----Original Message-----
From: hai-users-bounces at tssi.com [mailto:hai-users-bounces at tssi.com] On
Behalf Of buzz2241 at sasktel.net
Sent: Friday, July 28, 2006 12:32 PM
To: jc.provost at sympatico.ca
Cc: hai-users at tssi.com
Subject: Re: RE: RE: [Hai-users] Multiple Thermostats per zone

The sensor wou;ld be great it automating the shutdown when no one is
around, the only thing is the warm will not warm up or cool right away -
the room will take time to adjust - how much will depend on the
temperature differences. I think your idea will work just fine if you
create a program / button function that will allow you to start the
adjustment of the room 1-2 hours before using the room.

----- Original Message -----
From: Jean-Claude Provost <jc.provost at sympatico.ca>
Date: Friday, July 28, 2006 5:20 am
Subject: RE: RE: [Hai-users] Multiple Thermostats per zone

> Hi,
> 
> Other than the fact that I personally would put a shorter timer (say 5

> minutes), I think it's a great idea.
> 
> 
> Cheers from Varennes, Quebec Canada,
> 
> JC 
> -----Original Message-----
> From: hai-users-bounces at tssi.com [hai-users-bounces at tssi.com] On
> Behalf Of Rutherford, Austin
> Sent: Thursday, July 27, 2006 3:54 PM
> To: hai-users at tssi.com
> Subject: RE: RE: [Hai-users] Multiple Thermostats per zone
> 
> Hmmm...  I am starting to think that the easiest way would be to 
> put a
> motion sensor in the HT and when there is "Occupancy" turn on the HVAC
> fan and it can recirculate the air between the HT and other parts 
> in the
> basement.  I already have three zones and I think that it would be
> difficult to add a 4th zone for the HT now that the basement is 
> finished(also my zone controller is for only three zones!)
> 
> How does my alternative idea sound? When the sensor is triggers 
> turn a
> occupancy flag on for 60 minutes.(then it will keep extending 
> occupancyevery time the sensor trips) and I can have the HVAC fan 
> in the basement
> turn on when the occupancy flag is on and turn it off when the 
> occupancyflag goes to off.
> 
> Thoughts?
> 
> Thanks,
> Austin
> 
> -----Original Message-----
> From: hai-users-bounces at tssi.com [hai-users-bounces at tssi.com] On
> Behalf Of buzz2241 at sasktel.net
> Sent: Thursday, July 27, 2006 1:03 PM
> To: Brad
> Cc: hai-users at tssi.com
> Subject: Re: RE: [Hai-users] Multiple Thermostats per zone
> 
> I have 2 furnaces in my house, but each furnace is divided into 2 
> zoneswith omni controlled dampers in the ducts. Each furnace has one
> thermostat, but a temperature sensor placed on the other zone of each
> furnace tells my omni to open or close the damper as required to keep
> the 2nd zone at the correct temperature. the damper is very sensitive
> and takes 5 minutes to go from full close to full open. The major 
> lessonI learned is to be patient with the damper adjustment - you 
> are not
> going to change the temperature in a few minute period.......
> 
> 
> Are you able to place a damper (or two) in your home theatre room
> duct(s) with its own temperature sensor there - you could then use the
> omni to control the damper?
> 
> If not - in your case - you do need one of your tstats to be the 
> masterand one to be the slave so they don't over cycle the heating 
> / cooling
> unit - but there are also ramp up and ramp down times to consider as
> well....
> 
> Does anyone know if the omni (or other compatible thermostat) can be
> used in a master slave configuration? 
> 
> ----- Original Message -----
> From: Brad <looney2ns at sigecom.net>
> Date: Wednesday, July 26, 2006 3:04 pm
> Subject: RE: [Hai-users] Multiple Thermostats per zone
> 
> > This is not trivial to accomplish. To add to others comments, I 
> highly
> > recommend you talk to a reliable HVAC installer about doing this.
> > 
> > -----Original Message-----
> > From: hai-users-bounces at tssi.com [hai-users-bounces at tssi.com] On 
> > Behalf Of LarryH
> > Sent: Wednesday, July 26, 2006 4:50 PM
> > To: hai-users at tssi.com
> > Subject: Re: [Hai-users] Multiple Thermostats per zone
> > 
> > It is not common to put two thermostats on a single zone.  I'm 
> not 
> > sure how a setup like that would really work.  I suppose if they 
> were 
> > in parallel than the zone would heat or cool if either of the 
> stats 
> > called for a cycle.
> > I don't think this setup would have a good result.  Many stats 
> (like 
> > the RC
> > series)  have settings for a maximum number of cycles per hour, 
> and a 
> > required off time between cycles.  Much of this is to promote 
> > efficiency by regulating short cycling or to protect the 
> equipment.  
> > Multiple stats doesn't play well with this type of setup.  I 
> believe 
> > there are some products out there which can have multiple 
> temperature 
> > sensors going to a single stat.  The stat then does some type of 
> > temperature averaging.  I believe the custom stat which goes 
> with the 
> > Rheem/Rudd modulating furnace can be setup this way.
> > 
> > If the temperature demands are different in the two areas, you 
> should 
> > probably look at getting it zoned.  With air based 
> heating/cooling, 
> > it's not
> > 
> > always easy to micro-zone a house.  The equipment needs a 
> certain 
> > minimum air flow to work safely for heat and to prevent freeze-
> up with
> 
> > cooling.
> > 
> > ----- Original Message -----
> > From: "Rutherford, Austin" <Austin.Rutherford at cognos.com>
> > To: <hai-users at tssi.com>
> > Sent: Wednesday, July 26, 2006 3:07 PM
> > Subject: [Hai-users] Multiple Thermostats per zone
> > 
> > 
> > > Hello all,
> > > I am in the final stages of finishing my basement.  One of the
> > rooms is
> > > a home theater and am considering putting a thermostat in 
> there -
> > but
> > > there is already a thermostat in another room on that zone.  
> Is it 
> > > reccomended/supported/common to put two thermostats in different
> > rooms> on the same zones?  It would be for heating/cooling.  The
> > hookup to the
> > > OP2 would be easy, but I am guessing that I would have to wire
> > the HVAC
> > > in parallel with the existing thermostat.
> > >
> > > Thoughts/suggestions?
> > >
> > > Thanks,
> > > Austin
> > >
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