|
Space Thermostat Throttling Range |
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|---|---|
|
Applicability |
All HVAC zones |
|
Definition |
The number of degrees that the room temperature must change to cause the HVAC system to go from no heating or cooling (i.e., space temperatures floating) to full heating or cooling. |
|
Units |
Degrees Fahrenheit (°F) |
|
Input Restrictions |
The default value is 2°F. No input is needed and the prescribed value may not be overridden. |
|
Baseline Rules |
Same as the proposed design |
|
Space Temperature Schedule |
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|---|---|
|
Applicability |
All HVAC zones |
|
Definition |
An hourly space thermostat schedule |
|
Units |
Data structure: temperature schedule |
|
Input Restrictions |
Design temperature schedules are required to be used when available. When not available, the schedules specified in Appendix B and detailed in Appendix C shall be used as a default. |
|
Baseline Rules |
Schedules in the baseline building shall be identical to the proposed design. |
| Building Zone Thermostat Throttling Range | |
|---|---|
| Applicability | All HVAC zones |
| Definition | The number of degrees that the room temperature must change to cause the HVAC system to go from no heating or cooling (i.e., space temperatures floating) to full heating or cooling |
| Units | Degrees Fahrenheit (°F) |
| Input Restrictions | As designed with a default of 2°F* |
| Baseline Building | Same as the proposed design |
* For simulation using EnergyPlus, the reporting tolerances would be set as 1°F to simulate a throttling range of 2°F.
| Zone Temperature Schedule | |
|---|---|
| Applicability | All HVAC zones |
| Definition | An hourly space thermostat schedule |
| Units | Data structure: temperature schedule |
| Input Restrictions | Design temperature schedules are required to be used when available. When design temperature schedules are not available, the schedules specified in COMNET Appendix C (COMNET 2017) can be used as a default. |
| Baseline Building | Schedules in the baseline building shall be identical to the proposed design. However, dry bulb temperature setpoint may be allowed to differ if a user can demonstrate via the simulation program that equivalent thermal comfort is being maintained in accordance with ASHRAE Standard 55, Section 5.3.3, “Elevated Air Speed,” or Standard 55, Appendix B, “Computer Program for Calculation of PMV-PPD.” |