Question-and-Answer Resource for the Building Energy Modeling Community
Get s tarted with the Help page
Ask Your Question

Revision history [back]

In OpenStudio (and E+) thermostats do no have on/off times. Thermostats use a temperature schedule to control a zone to a specified temperature. For a PTAC, system availability is controlled with the Availability Schedule and the Supply Air Fan Operating Mode Schedule Name.

In OpenStudio (and E+) thermostats do no have on/off times. Thermostats use a temperature schedule to control a zone to a specified temperature. For a PTAC, system availability and operation is controlled with the Availability Schedule and the Supply Air Fan Operating Mode Schedule Name.

In OpenStudio (and E+) thermostats do no have on/off times. Thermostats use a temperature schedule to control a zone to a specified temperature. For a PTAC, PTAC, system availability and operation is controlled with the Availability Schedule and the Supply Air Fan Operating Mode Schedule Name.

In OpenStudio (and E+) thermostats do no have on/off times. Thermostats use a temperature schedule to control a zone to a specified temperature. For a PTAC, system availability and fan operation is controlled with the Availability Schedule and the Supply Air Fan Operating Mode Schedule Name.

OpenStudio includes a default Availability Schedule of 'Always On' which allows the PTAC to be available to operate at any hour during the year.

The Supply Air Fan Operating Mode Schedule tells the fan how to operate. A schedule value of 0 indicates the fan and the heating/cooling coil cycle on and off together to meet the load. A schedule value other that 0 indicates the supply fan runs continuously while the heating or cooling coil cycles to meet the load. The OpenStudio default schedule for this is also 'Always On' (value=1) which does force the fan to operate continuously 24/7.

In OpenStudio (and E+) thermostats do no have on/off times. Thermostats use a temperature schedule to control a zone to a specified temperature. For a PTAC, system availability and fan operation is controlled with the Availability Schedule and the Supply Air Fan Operating Mode Schedule Name.

OpenStudio includes a default Availability Schedule of 'Always On' which allows the PTAC to be available to operate at any hour during the year.

The Supply Air Fan Operating Mode Schedule tells the fan how to operate. A schedule value of 0 indicates the fan and the heating/cooling coil cycle on and off together to meet the load. A schedule value other that 0 indicates the supply fan runs continuously while the heating or cooling coil cycles to meet the load. The OpenStudio default schedule for this is also 'Always On' (value=1) which does force the fan to operate continuously 24/7.

24/7.

To my knowledge, there is no way to control a system's availability based on a thermostat setpoint schedule (I think this is what you are getting at).