When setting the heat range it is important to limit the highest heat set point, while it is not that important to limit the lowest heat set point.
This is because the higher the heat set point, the warmer the occupant can adjust the thermostat and the longer the unit will run heating. While the low side allows the heat set point to be set lower, which means heating will not run until the room reaches the lower temperature (which delays when heat will run).
We do not have an opinion on how you set this, but we are always available to assist.