.Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.ActiveAirFlow .Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.ActiveAirFlowThis sequence sets the active cooling and heating maximum and the active minimum setpoints for dual-duct terminal unit with cold-duct minimum control. The implementation is according to the Section 5.14.4 of ASHRAE Guideline 36, May 2020.
The setpoints shall vary depending on the mode of the zone group.
| Setpoint | Occupied | Cooldown | Setup | Warm-up | Setback | Unoccupied |
|---|---|---|---|---|---|---|
Cooling maximum (VActCooMax_flow) | VCooMax_flow |
VCooMax_flow | VCooMax_flow |
0 | 0 | 0 |
Minimum (VActMin_flow) | VOccMin_flow | 0 | 0 | 0 | 0 | 0 |
Heating maximum (VActHeaMax_flow) | VHeaMax_flow |
0 | 0 | VHeaMax_flow | VHeaMax_flow |
0 |
Note that the designer must ensure that the minimum (VOccMin_flow) and heating
maximum (VHeaMax_flow) sum to less
than the cooling maximum (VCooMax_flow) to avoid oversupplying the diffusers.