The procedure for a Pump Startup is same as that of the Pump Speed Change except for the different curve settings. The curve starts with the pump off and a speed factor of zero. At some point in time the pump starts and ramps up to a full speed factor of 1.
Example - The pump speed ramps up from zero to 1 (full speed) in 2 seconds. Flow will initiate when Pump develops enough head to open check valve.
Please make sure not to check "Non-Reopen CV" when modeling a Pump Startup. If selected and the check valve is in the closed position during start up, the non-reopen option will close the pump discharge permanently even though the pump has enough head to initiate flow.