System tab (data taken from Room Template, but editable)

This tab specifies the systems serving the room space conditioning (heating and cooling) and domestic hot water.

Under the heading Systems:

System is the Apache system supplying space conditioning.

Auxiliary vent system is not applicable to VE-SBEM.

DHW system is the Apache system supplying domestic hot water (including any solar water heating system). An individual DHW system is recommended.

Under the heading Heat Recovery (SBEM only):

The type of heat recovery should be selected from the drop-down list, and the Heat recovery seasonal efficiency set to a suitable value.

Under the heading Ventilation & extract:

Mechanical supply in this room? should be ticked if the room is served by a mechanical ventilation air supply. This invokes auxiliary energy calculations applied at room level.

Local mechanical exhaust in this room? should be ticked if the room has mechanical extract. This invokes auxiliary energy calculations applied at room level.

Scope of extract system feeds into the auxiliary energy calculation. Select as appropriate from the options ‘Fan within zone’, ‘Fan remote from zone’ and ‘Fan remote from zone with grease filter’.

Under the heading Demand controlled ventilation:

The Type of demand controlled ventilation should be selected from the drop-down list.

Night cooling? should be ticked as appropriate and the parameters SFP, Max flow rate and Max hrs/mth set appropriately.