I am currently trying to model a 10,000 sf community center in climate zone 4a that uses a packaged rooftop system with 2 stage dx cooling with an electric heating coil, and VAV with electric reheat terminals in zone. The template from Openstudio for this type of air loop wants to use a scheduled set point manager. The deck temperature on this setpoint was set at 55 all year, and running this model results no unmet hours,but a significantly high heating energy load for the year (about 500,000 kBtu per year heating and 160,000 kBtu cooling). I tried using the Setpoint manager: Warmest, and had success in lowering the heating energy load by about half. What is the correct set point manager to use in this situation?
I am new to using openstudio/ energyplus, and haven't fully grasped how to pick set point managers for each situation. Besides the energyplus setpoint manager engineering reference, could someone explain how they choose their setpoint manager in their systems.
