I am attempting to size the baseboards in my project. All zones have
baseboards. The systems are VAVS with cooling control set to zone reset.

First I enter a very large number for baseboard capacity
-999,999. Then I check the SS-F reports to determine the maximum
baseboard load. Then I enter a value 10% higher then that
maximum. The next run, the maximum baseboard loads are significantly
lower than the first run and lower than the capacity entered into
equest and there are a number of underheated hours. There were no
underheated hours in the run with all baseboards set at -999,999. My
question is why does equest report the maximum baseboard load as
lower than the input capacity of the baseboards. I would have
thought that the maximum baseboard load would equal the input
baseboard capacity if that capacity is required to get rid of
underheated hours.

For example, one zone - with capacity at -999,999 the maximum load
reported in SS-F is -35,678 and no underheated hours. So I enter
-40,000 as the capacity. Next run the maximum baseboard load is
reported as -28,436 and there are a number of underheated hours.

Any insights greatly appreciated.

>> Christopher Jones, P.Eng.