34
| EN
EIOM v2018.04
devices (e.g. smoke detectors).
Units with control system can be equipped with smoke detector.
Smoke detector has been developed to detect smoke in ventilation ducts.
The duct detector contains an intelligent controlling circuit. This circuit is adjusting the sensitivity to give an optimal function during the whole life
time of the detector. When the controlling circuit has reached the maximum sensitivity compensation for contamination, a service alarm is indi-
cated.
Figure 11.4.1 – Duct smoke detector and waterproof cover
When installing outdoors or in cold attics etc, where there is a risk for condensation, the smoke detector should be insulated from the surrounding
air with e.g. weatherproof housing.
NOTE: For more information, control, maintenance, diagnostics and troubleshooting refer to smoke detector technical specification.
11.5 CO
2
DUCT AND ROOM SENSOR (WITH INTEGRATED CONTROL SYSTEM)
Units with control system can be equipped with the CO
2
sensor which measures the concentration of CO
2
in ducts or premises. Four pre de-
fined ranges provide ideal measurement windows with one user-definable range. The implemented NDIR sensor is self calibrating and mainte
-
nance-free. These sensors are equipped with Modbus RTU (RS485) communication and have an analogue output.
Figure 11.5.1 – CO
2
duct and room sensor
NOTE: For more information, control, maintenance, diagnostics and troubleshooting refer to CO
2
sensor technical specification.
11.6 HUMIDITY DUCT AND ROOM SENSOR (WITH INTEGRATED CONTROL SYSTEM)
Humidity sensor is designed for humidity detection. The calibrated humidity sensor measures the relative humidity of air and converts the mea-
surands into standard signal (0-10V).
Figure 11.6.1 – Humidity duct and room sensor
NOTE: For more information, control, maintenance, diagnostics and troubleshooting refer to humidity sensor technical specification.
