All the data on this tab is under your control, though set initially from the Room Template. Much of the data displayed here is shared with other VE views such as Apache View and other Regulatory Frameworks within VE Compliance. The room should be assigned an Apache System with properties accurately describing the system proposed for the actual building.
The following System tab attributes that would normally appear in the ‘System outside air supply’ frame are, however, hidden from view in Scotland Section 6 (2022):
· Flow rate
· Variation profile
The reason is that a specification of scheduled minimum ventilation forms part of the standard room conditions associated with the NCM activity (which is handled via data on the Air Exchange tab). To avoid a double specification of minimum ventilation the System tab ventilation parameters are disabled for ratings analysis.
Ventilation & extract
Mechanical supply
This option becomes active when the Apache System serving the room has Cooling/mechanical ventilation mechanism set to ‘Mechanical ventilation’. In other cases it is disabled.
Mechanical exhaust
This option allows setting mechanical ventilation for the selected zone. Specify the Exhaust flow rate together with the Specific fan power. Care should be taken to set vales appropriate to the system serving the room, as this is not done automatically in the course of system assignment.
Demand controlled ventilation
Where there is demand controlled ventilation, select a suitable option from the drop-down menu.
