Convention 6.14 - Individual Shop Units in Shopping Centres

There are three scenarios that should be dealt with when assessing a locally and centrally conditionedindividual shop in a shopping centre:

1. The unit has local heating or Air Conditioning and receives unconditioned central fresh air from theplant room. This unit should be assessed in SBEM with the local heating plus ‘mechanicalventilation’ to the affected zones. The level of assessment will depend on the type of systemconditioning the room. Please refer to assessment level decision flowchart (10.02).

2. The unit has local heating or Air Conditioning and tempered fresh air from a central location. Thisunit should be modelled as item 1 above.

3. The unit is supplied by a centrally conditioned system in addition to local devices. In thesecircumstances the following should be followed:-The zone should be split into a number of zones to match the number of HVAC types. All of thezone’s envelopes, including glazing, should be equally split and entered into each relevant zonealong with the appropriate respective HVAC type.

(Note – it may not be possible for all of the zone’s envelopes, including glazing to be equally split inapproved software versions using a graphical interface. If this is the case the zone, its envelopes and glazingshould be divided as equally as possible and the limitation recorded on site notes).