Hello,
I have been struggling with under heated hours in my model. I have been
searching high and low through the archives and have been trying different
Suggestions made by many different users yet I still cannot manage to solve
my under heated hours problem. Unfortunately I don't have just a few
Hours here and a few hours there, it is a ton of hours that are under
heated.
I have tried these suggestions made by others and saw some improvement but
by some I mean very very little:
- Night Cycle Control --> Set to "Cycle on Any"
- Thermostat type -> Reverse Action
- Increased Throttling Range
- Defaulted all heating/cooling schedules for the zones in the
problematic system with the exception of the control zone
- Increased Heating Capacity
- Change Cooling Control range from 4 degs to 1 deg.
- Others that are not coming to mind at the moment but proved
unsuccessful
The main problematic zones are in the "Arena" and "Galleria" Shells of my
model. Adding heat to the Galleria did solve my under heated hours but I had
To add a whole lot of heat in order for that to happen, and I mean A LOT.
Is there something I am missing? Can anyone tell me something I may have
missed or something noticeably wrong with my system setup?
Please offer any advice you may have. The .pd2 and .inp files are attached.
Thank you very much!
Justin Elkin, LEEDR Green Associate
Please send the weather file too and I will take a look at it.
Kelsey Van Tassel
You have overridden the heating capacity of many zones to zero (Max Heat Rate column). By putting entries in this field you are overriding the calculated capacities of the heating/reheat coils based on the design day loads.
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Kelsey Van Tassel
Kelsey,
Thank you for taking a look at my file for me, I really appreciate it.
I zeroed out some of the zones in the "max heat rate" column because those
particular zones do not receive heat from the air system (ie reheat coils).
The heat to
those zones is entirely baseboard heating. Do you know if this would create
a problem? Maybe it zeros out the baseboard as well? In the item help it
says, however,
that the max heat rate does not include baseboards.
I have attached the .pd2, .inp, and the weather file to this email.
If you get the time let me know what you think.
Thank you,
Justin Elkin, LEEDR Green Associate