A couple of very disconcerting errors and messages had come up on the
model that I have been working on for the past month and all day today.
Firstly, when I went to simulate the building performance in detailed
Data Edit and suddenly the weather data disappeared. "An error occurred
while opening the file to be downloaded, Error:3". Does anyone know how
to reattach the weather file? Or know what happened?
Second and more alarmingly, I can see the building but when I try to go
into the Building Creation Wizard all of my inputs are gone and are the
defaults. This would be fine except for the heat recovery and set
points that I have to change. Everything seems to be fine in Wizard
Data Edit (except for the lack of weather which I realize might be
because the project data doesn't have the building's location)
Is there a way to "find" the data that seems to be present in the
geometry of the building but not in the Building Creation Wizard? If I
re-input everything will I lose the geometry and settings that I have?
Thanks,
Jessica
Before doing anything further, make a copy of the directory you have for
a backup as you might inadvertently dig yourself a deeper hole to climb
out of.
Not to sound dismal, but keep in mind you might save time by simply
working from an earlier save point if you have been making backup saves
somewhere within the past month (+1 day)... just keep that in mind
before investing hours into fixing the current state.
That said - some quick fix possibilities for said behaviors: are you
opening a 3.63 file with 3.64 (or otherwise have a version mismatch)
and/or have you moved any of the files between opening/closing the
project? If so, you might find some or all of your issues resolved by
correcting those actions.
With that out of the way, see my query-specific comments below in red.
Hope this helps! Many of us have been made to survive these "trial by
fire" situations... so rest assured you'll at the least receive some
sympathy and hopefully useful feedback from this community. Remember
that sometimes it's critical when everything goes wrong is to invest in
regular sleep or take a long lunch... whatever you might need to keep
your head on straight!
Good luck to you,
NICK CATON, E.I.T.
Hey Jessica,
I'm copying the list for others' benefit - hope you won't mind =).
"Where are the setpoints?" is a pretty common question that's probably
unintentionally broad, but I'll try to cover all the bases...
'Setpoints' can mean a lot of things for different systems... the
temperatures you set in the wizards, depending on the exact system(s)
you chose, should end up within a few locations in detailed mode...
* Double click on any zone (beneath a system in the component
tree, under the airside HVAC tab), and in the first screen you can enter
DESIGN-HEAT-T AND DESIGN-COOL-T... these are effectively your thermostat
setpoints for your design cooling and heating day, used for any
airflow/capacity autosizing by the program. In the same location you
can identify and select your cooling and heating thermostat schedules.
Find and double-click those schedules in the tree to the left to
investigate your hourly thermostat setpoints (independent from the
design day calculations). Those schedules are the result of everything
you entered in the wizards for occupied/unoccupied (setback)
temperatures, the associated hourly scheduling, and potentially any
seasonal definitions (i.e. summer session for a school) you may have as
well.
* Other zonal-level inputs for heating/cooling may be active for
your editing as well under the zone's heating and cooling tabs,
depending on your system selection(s) - worth a quick check.
Margin Note: Remember that in detailed edit and for multiple systems,
anything you change in these windows is probably faster to change in the
spreadsheet view, but the dialogs organize the inputs pretty well and
help you find what you need to change so they're a great place to start!
If you have the time to take on a few time-saving tips, "mass-setpoint
edits" are a great example of where one should be aware of the magic
within the "user defaults" feature. Related archive link: (
http://lists.onebuilding.org/htdig.cgi/equest-users-onebuilding.org/2009
-April/001278.html) Also remember, and this is particularly true of
detailed mode after the wizards, that you can right click almost any
input field to pull up a corresponding help file entry and learn more if
you're unsure of the meaning/significance.
* Pretty much every other temperature 'setpoint' can be found
within the dialogues for the airside HVAC system itself - double click
any system in the tree under airside HVAC tab. Navigate to the heating
and cooling tabs, and peruse the sub-tabs therein.
* Also, you will find temperature set points from the wizards
within loops/boiler/chiller/DOMHW heaters/etc underneath the waterside
HVAC tab, double-clicking the corresponding components in that tree.
NICK CATON, E.I.T.