EnergyPlus I/O Reference, AirTerminal:SingleDuct:ConstantVolume:Reheat, Damper Heating Action states:
With Reverse and ReverseWithLimits (the default) action, as the heating load increases, the unit starts at minimum air flow and minimum hot water flow. The hot water flow is increased until it reaches maximum flow or the user-specified maximum reheat air temperature is reached, then the air damper starts to open to meet the load. For Reverse the damper can open all the way. For ReverseWithLimitss the damper can only partially open to a maximum flow rate given by the following two fields. These options are used if the minimum air flow rate is not adequate to serve the peak heating load. This is sometimes called the dual maximum control logic as illustrated in following figure. For heating coil types other than the hot-water coil, e.g. electric, steam, and gas, the reverse action works the same as the normal action – always keeping the air flow at the minimum during heating.
Is the last sentence correct? I tested electric coils. Reverse worked as the reverse action. The air flow increased beyond the minimum flow to meet the heating load.
