5.6.7-1
Central air conditioning system
Component Information
- Code:
- 5.6.7-1
- Sequence:
- 1
- Unit:
- m2
- Sub-Element:
- 5.6.7 - 7 Central air conditioning
Central air conditioning system
details to be stated
Component Statistics
Measurement Rules
Included Items
Excluded Items
Measurement Rules (6)
The area measured is the area serviced by the system (i.e. the area of the rooms and circulation spaces that are served by the system, which is not necessarily the total GIFA of the building). The area serviced is measured using the GIFA.
Where more than one system is employed, the area measured for each system is the area serviced by the system.
Installations for residential units, hotel rooms, student accommodation units, etc. may be enumerated (nr). The type of residential unit or room, and size (by number of bedrooms) of unit, is to be stated.
Work to existing buildings is to be described and identified separately.
Where the contractor is only responsible for designing specific elements and/or components of the building project (i.e. not the entire building project), contractor-designed work is to be described and identified separately.
The percentage additions for testing and commissioning are to be applied to the total cost of the items comprising the sub-element. A single combined percentage addition can be applied to cover the costs of both testing and commissioning.
Included Items (19)
Plenum air heating systems.
Variable air volume (VAV) and constant volume air conditioning systems.
Single and dual-duct air conditioning systems.
Multi-zone air conditioning systems.
Induction air conditioning systems.
Hybrid air conditioning systems (i.e. systems based on a combination of a number of other air conditioning systems).
Chillers.
Air handling units (AHUs).
Terminal units/emitters.
Distribution pipelines and pipeline fittings.
Valves.
Pumps.
Distribution ductwork and ductwork fittings and ancillaries, e.g. supports, hangers, access openings and dampers (control, fire and smoke).
Grilles, fans, filters and other ancillary components of central air conditioning systems.
Instrumentation and control components for central air conditioning systems.
Thermal insulation.
Sundry items.
Testing and commissioning.
Where works are to be carried out by a subcontractor, the subcontractor’s preliminaries, design fees, risk allowance, overheads and profit, with allowance for these to be made within unit rate applied to element or component.
Excluded Items (5)
Heat source (included in element 5.5).
Local cooling and air treatment independent of heating systems, e.g. local comfort cooling, (included in sub-element 5.6.8).
General-purpose LVLV power supplies (included in sub-element 5.8.2).
Building management systems and other control systems (included in sub-element 5.12.3).
Builder’s work in connection with services (included in element 5.14).
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