[Hap-users] Thermostat Setpoints Setup

[Daniel Lim]

Hi HAP Users,
I am modeling a multifamily building and would like to be sure how to implement USGBC's Multifamily Energy Model Simulation Guidelines which specifies that for cooling, the following setpoints shall be used for dwelling unit spaces: 

12-9am: 78 degrees F; 9am-3pm: 80 degrees F; 3pm-12am: 78 degrees F.
I am thinking of modeling these two setpoints by (1) setting the occupied period to 78 deg F and the unoccupied period to 80 deg, (2) using a thermostat schedule set according to the specified time periods when 78 deg F and 80 deg F will occur, and (3) selecting 'cooling is available during unoccupied period' to let the system respond to cooling demand during said period. The occupancy schedule is typical for residential spaces i.e., high occupancy during the night and low occupancy during the day.
I simulated to check the hourly cooling coil load and the graph looks okay showing lower cooling coil load during the unoccupied period when thermostat is at 80 deg F.
Any comment or suggestion to improve or correct the above approach is much appreciated. Thanks.
Daniel Lim



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