All - I'm trying to resolve a gshp school system model, to reduce the
number of hours outside of throttling range for LEED purposes. I have
scowered multiple threads talking about sizing, throttling range, min
air flow ratios, reverse-action TSTATs, night-setback, gshp's, etc. and
have applied suggestions with minimal result. The only way I can take
considerable hours out of the % not in throttling range is if I increase
sizing ratios way beyond design capacities and strip out everything that
makes the model accurately reflect design conditions.

I've attached the before and after (.pd2) files for reference, however
results are still not seen. SS-R reports indicate hours in the 100+ load
range, but again this is going beyond manually specifying capacities and
using sizing ratios. Also to be noted, the ASHRAE baseline (Pkg Elec HP)
is also in the same range and is not responding to changes... which
would suggest something common to both within Appendix G criteria.

Experience and opinions would be greatly appreciated.

--
Matthew Higgins, LEED AP + ASHRAE-HBDP