I would check your Sizing:Zone object first, ensuring that Zone Heating Design Supply Air Temperature Input Method is set to SupplyAirTemperature and Zone Heating Design Supply Air Temperature is set to 32.2C/90F.

If Sizing:Zone isn't the issue, double check whatever SetpointManager is controlling the SAT (probably SetpointManager:SingleZone:Reheat).

It appears you've entered fahrenheit temperatures into OpenStudio; I'm not sure that OpenStudio supports IP unit inputs, so double check that your temperatures are translating to Celsius as expected in the IDF.