We factory acceptance test (FAT) water chillers typically under
maximum load conditions.
What is a maximum load condition?
A maximum load condition is primarily ambient temperature focused. Not
chilled water temperature focused. It is the condition whereby while
the chilled water temperature's are at the design full load return and
supply points the coincident ambient temperature is at the maximum
specified for a given altitude.
But water chillers fail mostly under lowest load conditions.
What is a lowest load condition?
It is precisely the reciprocal!
What sayeth the PJM's and the other great minds of our industry?
Of course, given the above described limitations that a typical FAT is
subjected to, the imagination, of a technical nature, regarding
SSAT's, is more about extrapolation though mostly about seasonal