Functional Description Fan Unit Els Ec - Helios Ultra Silence ELS EC series Montage- Und Betriebsvorschrift

Installation and Operating Instructions
EN
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HINWEIS
Fan unit ELS EC..
The following functions are implemented:
1. Required ventilation
Regardless of sensor operation (F or P types), the stages can be activated or deactivated using a light switch via the
control inputs.
The last actuated stage always runs.
2. 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 ente-
red temporarily, without the fan becoming operational. Factory setting approx. 45 seconds.
3. Overrun
The fan will continue to run after the deactivation of the required ventilation, and after the deactivation of all required
ventilations for multi-speed types, during the set time and it will then automatically deactivate. Factory setting approx.
15 minutes.
4. Interval operation
Interval operation is inactive in the delivered state. An interval of 8, 12, 24 hrs. can be activated using the DIP switch.
The fan will be automatically activated at the time interval of the set interval time for the duration of the set overrun time.
The cycle begins with the activation of the fan power supply or after the last fan operation.
5. Changing the factory settings
Changes must be made before the installation of the fan unit. An installed fan unit must be removed from the casing
(see section 8.1), and the terminal box cover must be removed (see section 9.1).
6. Automatic function
The automatic function (humidity operation or interval operation) can be externally activated or deactivated at the deac-
tivation input (see wiring diagram overview). In case of deactivated automatic operation, the fan can be controlled using
the required ventilation inputs without restriction.
7.3 Functional description Fan unit ELS EC.. P (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.
Alternatively to the motion control system, the fan can be controlled normally via required ventilation.
The required ventilation can be reasonably used for this type e.g. as a remote control input.
Range and detection angle:
Under ideal conditions up to approx. 5 m, horizontal 100°, vertical 82°, see Fig. 21. The temperature difference bet-
ween 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 or after a power failure, the sensor will be in a stabilisation phase for approx.
1 min. No movements will be detected during the stabilisation phase.
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