Hea09 Carbon dioxide sensors – Above Green

(2 credits)

Aim

Credits	Answer	Select a single answer
0	A	Question not answered
0	B	No
2	C	Yes, in all regularly occupied space

Assessment criteria

Criterion	Assessment criteria	Applicable answer
1	Carbon dioxide sensors are installed as follows: a) In mechanically ventilated spaces, the sensors EITHER: Are linked to the mechanical ventilation system and provide demand-controlled ventilation to the space. OR Visibly or audibly alert the residents or building managers when carbon dioxide levels exceed the recommended set point. b) In naturally ventilated spaces, the sensors can EITHER: Visibly or audibly alert the residents or building managers when carbon dioxide levels exceed the recommended set point. OR Are linked to controls with the ability to adjust the quantity of fresh air, e.g. automatically open windows or roof vents.	C
2	Sensors must be installed, tested, calibrated and maintained in accordance with the manufacturer’s instructions. Sensors should be placed to provide representative readings of conditions within each space. Sensors should be wall-mounted and at a height above floor level that corresponds to an average seated or standing head height for the main activity performed within the space.	C
3	Set points for sensors must not exceed a carbon dioxide concentration of 800 ppm in indoor air.	C

Evidence

Criteria	Evidence requirement
-	The evidence below is not exhaustive, please also refer to the ‘BREEAM evidential requirements’ section in the scope of the Guidance for appropriate evidence types which can be used to demonstrate compliance.
All	Photographic evidence of the sensors.
All	Description of how the sensors work in terms of actuating ventilation or alerting users.
All	Operation and maintenance manuals or records for the installed system(s).

Definitions

Occupied space:

A room or space within the asset that is likely to be occupied for 30 minutes or more by an asset user. For the purpose of this issue, the definition excludes the following:

Atria or concourses
Entrance halls or reception areas
Ancillary space, e.g. circulation areas, storerooms and plant rooms.