How many sensors are required in a
typical installation?
Where should they be located?
The number of zones with different
occupancy patterns should dictate the number of sensors.
In a small office application for
example, it would be ideal to have one sensor in the office
space and one in the conference area.
Carbon dioxide distribution in a
space is influenced by the same factors that influence
temperature distribution.
Much like temperature sensors,
placement of CO2 sensors should be based on the zone to be
controlled and anticipated loads. (e.g. common prescence of
several persons).
For optimum control, there should be
a CO2 sensor placed in every location where temperature
controls are used.
If an HVAC system is serving a series
of zones with similar occupancy patterns, sensors placed in
the return air ducting may be appropriate.
