12
Fan Unit ELS-V..
Installation and Operating Instructions
– The following functions are implemented:
1. Start-up delay
Following the activation of the fan via the required ventilation (terminal 1/2/3), operation begins after the set delay time
(at all stages for multi-speed types). Thus, e.g. in case of joint activation/deactivation with the light, a room can be ent-
ered temporarily, without the fan becoming operational. Factory setting approx. 45 seconds.
2. Overrun
The fan will continue to run after the deactivation during the set time and it will then automatically deactivate. Factory
setting approx. 6 minutes.
3. Interval operation
The fan can be automatically operated in adjustable time intervals. After the set overrun time, it automatically deacti-
vates. The interval time begins after the last deactivation process, even if manual operation is active in the meantime.
Factory setting approx. 4 hours.
4. Changing the factory settings
Changes must be made before the installation of the fan unit. An installed fan unit
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must be removed from the casing
(see section 8.1), and the terminal box cover must be removed (see section 9.1).
5. Automatic function
The automatic function can be externally activated or deactivated at the deactivation input (see wiring diagram over-
view).
6. Initial commissioning, or after a power failure
When the operating voltage is applied, a start initialisation is carried out. The fan will then be in test mode for one minute.
Condition: the DIP switch has the factory setting (10000).
If the DIP switch is not set to the factory setting, normal operation will be activated after approx. 20 second lockout
period.
When test mode is running, the fan can be activated without start-up delay using the switch input for demand-control-
led ventilation (always the highest stage for multi-speed units). When deactivating demand-controlled ventilation in the
test minute, the fan will immediately switch off without overrun. This applies for a switch cycle within the test minute.
The activation and deactivation of demand-controlled ventilation within the test period will end the test period with the
deactivation of demand-controlled ventilation. If the switch input remains activated beyond the test minute, the fan will
continue to run until the switch input is deactivated and the subsequent overrun time is finished.
7.3 Functional description Fan unit ELS-VP.. with integrated presence sensor
This control unit contains a PIR sensor. The sensor detects thermal radiation, which is invisible to the human eye, but
typical for human beings. If a person enters the detection range of the sensor, it recognises the room use and activates
the fan (always at the highest stage for multi-speed types). If no other movement is detected in the detection range, the
15 minute overrun time will begin. Any other movement within the overrun time will restart the overrun time.
Range and detection angle:
Under ideal conditions up to approx. 5 m, horizontal 100°, vertical 82°, see Fig.23. The temperature difference between
the object and background must be at least 4 °C. The lowest object speed is 0.5 to 1.5 m/s. The range depends on the
temperature difference, movement and speed.
The sensor cannot detect movement if it is covered, e.g. by shower curtains or the like. If the object moves at
the border of the measuring range, it is possible that the object will not be detected.
The best detection coverage is achieved when the predominant movement direction in the room is at a right angle to
the sensor. There is an area in which no objects can be detected directly in front of the Sensor (0°).
The following errors can occur during movement detection:
Other heat sources
– Animals
– Light sources with high IR proportion (e.g. sunlight, incandescent lamps, etc.)
– Rapidly changing air temperature differences, which result from e.g. the activation of air conditioning units, fan heaters
or the like.
Other error sources
– IR filters in front of the sensor, e.g. glass or acrylic, absorb a proportion of the thermal radiation,
so that the objects may no longer be detected.
– If the heat source moves very rapidly or very slowly (see above), detection is not possible.
1. Initial commissioning or after a power failure
Upon connection of the operating voltage, the movement sensor will be started after approx. 30 seconds due to the
stabilisation of the movement sensor.
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NOTE
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