For supplemental heating, major inputs are:
(1) OA temperature below which supplemental heating is allowed
(2) OA temperature below which the heat pump is turned off
The first is to be set at 40?F per Section G3.1.3.1 - Heat Pumps (Systems 2 and 4).
I do not seem to find anything on which value to set the second at. Is there any guidance over there?
______________
Demba NDIAYE
