[Equest-users] Thermostat Setting

[Carol Gardner]

I think I can point Susan in the right direction at least. First read this:

For example, if the heating/cooling setpoints are 70/75, the throttling
range is 0.5F (throttling range is centered about the setpoint), then the
heating/cooling trigger temperatures for these reports are 68.75F and 76.25F
(half the throttling range plus 1F).

So you have 72 for heating and 74 for cooling. That means for heating your
trigger temperature is 72 +/- 2F +/- 1F for 69F and 75F , for cooling you
have 71F and 77F. So your heating/cooling trigger temperatures are crossing.
That seems like it could cause a problem like you are experiencing.

WRT to the other temp, 70 F in the space, read the online help for setting
this temp and follow it.

Cheers,
Carol

On Thu, Apr 22, 2010 at 10:19 AM, Howe, Timothy <Timothy.Howe at stantec.com>wrote:

>  Just re-name the file “not-a-top-secret-nuclear-facility.pd2”.  Should be
> all good.
>
>
>
>
>
> *Timothy Howe, MS, LEED® AP*
> Mechanical Engineer
> Stantec
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> *From:* equest-users-bounces at lists.onebuilding.org [mailto:
> equest-users-bounces at lists.onebuilding.org] *On Behalf Of *Eric O'Neill
> *Sent:* Thursday, April 22, 2010 1:18 PM
> *To:* Susan F
>
> *Cc:* equest-users at lists.onebuilding.org
> *Subject:* Re: [Equest-users] Thermostat Setting
>
>
>
> Can’t you just remove the sensitive project information from the files? A
> text editor should allow you to find any “incriminating evidence” and you
> can switch the weather file location so we won’t even know where in the
> world it’s located :-) Unless you’re modeling the pentagon, in which case
> I’ll quiet down.
>
>
>
> And I doubt this is it, but you might want to double check your header in
> the hourly report to make sure you’re not looking at just the heating
> setpoint (see attached pg.2 and below). The space isn’t being cooled at all,
> correct?
>
>
>
> *From:* equest-users-bounces at lists.onebuilding.org [mailto:
> equest-users-bounces at lists.onebuilding.org] *On Behalf Of *Susan F
> *Sent:* Thursday, April 22, 2010 11:47 AM
> *To:* Carol Gardner
> *Cc:* equest-users at lists.onebuilding.org
> *Subject:* Re: [Equest-users] Thermostat Setting
>
>
>
> Unfortunately due to the sensitive nature of the project I cannot send the
> files.  I have checked and my heating/cooling schedules are assigned to the
> right locations.
>
> Could it be related to the design temperatures I have indicated for each
> zone?  The tstat schedules are as I have stated below but I have the design
> temperatures at 74 cooling and 72 heating.  The load temperature (in the
> space definition) is 70.  My throttling range is 2.  Would any of this cause
> problems?
>
> On Thu, Apr 22, 2010 at 11:50 AM, Carol Gardner <cmg750 at gmail.com> wrote:
>
> Susan,
>
> While in detailed data edit go onto one of your thermal zone spreadsheets
> to look at your schedules. You will be able to see them easily from there.
> Make sure you haven't accidentally put your heating schedule in where your
> cooling schedule should be. If this doesn't work zip up your .inp and .pd2
> files and send them to us.
>
> Good luck,
> Carol
>
> On Thu, Apr 22, 2010 at 6:11 AM, Susan F <modelsenergy at gmail.com> wrote:
>
>  I have a model that does not seem to be switching the thermostat between
> heating and cooling.  When I output the hourly data for the Zone Thermostat
> Setting it seems to always be the heating setpoints (70 occupied and 64
> unoccupied).  Any idea why this wouldn't be changing over to cooling
> setpoints (75 occupied and 82 unoccupied) during the warmer months?
>
> Thanks in advance.
>
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