Refer to the Vista Section of this Help Site for details on the use of this module; however, the following is typical:
Carry out common sense simulation checks:
- Occupancy & gains operate at the desired times (line chart & table);
- Set-points are correct at the desired times (line chart & table);
- Auxiliary ventilation (NVHR supply fan) operates at the desired times (line chart & table);
- Openings operate at the desired times (line chart & table);
- Room temperature conditions do not lie outside of sensible limits (line chart & table);
- Room CO2 conditions do not lie outside of sensible limits (line chart & table).
It is important that an appropriate number of NVHR rooms are assigned to a space; an insufficient number of units can often be detected by poor CO2 performance.
Carry out design performance checks:
- Winter temperature test (range test < X°C (e.g. 20°C), occupied hours, heat map);
- Summer low-level overheating test (range test > X°C (e.g. 23°C), occupied hours, heat map);
- Summer comfort overheating test (range test > X°C (e.g. 25, 28°C), occupied hours, heat map);
- CO2 test (range test > X PPM (e.g. 1000 PPM), occupied hours, heat map);
- Room temperature both when occupied and during night cool (line chart);
- Operation of mechanical cooling if provided versus room temperature (line chart);
- Active opening operation versus internal & external temperatures (line chart & table);
- Energy use (line chart & summary table).
It is important that you review simulated operation and consider adjusting NVHR set-point values to fine tune the design performance.
Carry out compliance performance checks: