15
Fan Unit ELS-V..
Installation and Operating Instructions
6. Activation of start-up delay and overrun timer at all power levels
This function can be adjusted for multi-speed types. Adjust DIP switch 6 to “on” (factory setting is
“off”). By activating all levels as time input, even the smaller levels can be used as push button inputs
for multi-speed fans (for adjustment without start-up delay). The inputs are then equivalent for mul-
ti-speed fans.
Active switch input results in:
– deactivation of humidity control system
– the last activation specifies the level, any other previously activated level will be overridden
During a running humidity stop period, the activation or deactivation of demand-controlled ventilation
(manual operation) will result in the activation or deactivation of the desired level after overrun time. In this
case, the humidity stop period will continue to run in the background or until the end. In this case, the
humidity control system will not be reset by activating demand-controlled ventilation. If multiple swit-
ches are activated after the end of the humidity stop period, the highest level will be activated.
7. 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 immediately activated. When
test mode is running, the fan can be activated
without start-up delay
using the switch input for
demand-controlled 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-con-
trolled ventilation within the test period will end the test period with the deactivation of demand-con-
trolled 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.
The humidity sensor (function 4.4) remains active in test mode, but only works as “push button” during
the test minute (humidity activation threshold reached
→
immediately on, level falls below humidity
activation threshold
→
immediately off).
The aforementioned conditions shall apply, as with demand-controlled ventilation.
8. Checking the humidity function
If the humidity required for the initial commissioning is not available, then the fan unit can be checked
as follows:
If a damp cloth is held below the facade, the humidity sensor will detect a rapid humidity increase and
it will activate the fan after approx. 20-40 seconds.
9. Functional disturbances
In order to enable a correct humidity measurement, the fan or the fan temperature must be
adjusted to the temperature of the installation site. A warm fan in a cold environment or a
cold fan in a warm environment will lead to a shift in the humidity measurement value. The
electronic control unit has been designed and extensively tested according to the cur-
rent regulations (DIN, EMV). Should functional disturbances still occur, proceed as follows:
– Check that electrical connection is correct.
– Disconnect the unit from the power supply by switching off the fuse for at least 30 sec. Then switch
the fuse on again.
– It must be ensured that sufficient supply air can flow into the room to be ventilated. If the functional
disturbance cannot be resolved with these measures, please contact the Helios customer service
team.
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There must be no repair attempts in the terminal box!
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NOTE
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WARNING
EN
