9
Option: Ventilation time module (time ventilation module WSA 303)
Automatic closing in the ventilation mode according to pre selected time (1 min. to 30 min.) after ventilation
OPEN or STOP was actuated
Once this time has elapsed, the actuators close after ventilation „OPEN“ or
ventilation „STOP“. This function is not operative if the setting potentiometer is on the right-hand stop.
Option: Gab ventilation module (module WSA 304B) WSC 204 / WSC 204KP /
WSC 204MH
It is not always necessary for an electric actuator to open a ventilation unit (window or light dome) by its full
stroke. Sometimes, a small gap is sufficient for ventilation purposes. This module enables time-controlled
limitation of the actuator stroke (the opening time can on the potentiometer be set from 1 - 60 sec). Even re-
triggered in ”OPEN” direction the window will not open further than set preset opening value
The module has no influence on the actuator when an ”EMERGENCY OPEN” function is triggered. In this case
the actuator opens to its maximum stroke.
It is
not
possible to install both a WSA 303 and a WSA 304B module in one smoke control panel.
Wind/rain CLOSE
The actuators close when the wind/rain sensor has been activated (potential free contact in the sensor
switches).
As long as the sensor is activated, the ventilation function is out of operation and the green wind/rain LED
lights.
Activated alarm has 1. priority.
Option: Transmission of the wind/rain signal (module WSA 302)
The activated signal of the wind/rain sensor can be transmitted potential free to the next smoke control panel.
1 x change-over contact (max. load: 60V, 1A) with 3 pole connection terminal for potential free transmission
of the wind/rain trip.
CLOSE after a power failure
2 minutes after a power failure actuators opened for natural ventilation will automatically close.
In the event of alarm, this function will be out of operation.
4.3. General information
EMC protection
All inputs and outputs are protected from coupled in electrical interferences.
Short-circuit protection
All outputs are protected against short-circuit and overload.
4.4. Connection possibilities
1) Actuators with a total power consumption of max. 4A
2) Smoke detectors, up to 10 pieces in 1 sensor group
Optical smoke detector and/or thermo-differential sensor
and/or heat max. sensor
WSA 300, WSA 310
3) Break glass units (main), up to 4 per sensor group
WSK 320 000X*
4) Break glass units (secondary), up to 15
WSK 330 000X
5)
Ventilation buttons with ‘indicator, up to 15,
any number without ‘open’ indicator
WSK 100 1161
6) Wind/rain detector with potential free close contact
WLA 330 01, WLA 331 01
7) SHE activation on potential free
ASV contact in the smoke detector connector
WSA 306 to be installed
* incl. the break glass unit in the door on the WSC 204KP
