GEZE THZ - Operation; General Operation

Staircase control unit THZ
31
Operation
2.2 Properties
à Controlling of motorised 24-V DC drives for smoke and heat extraction in case of re
à Controlling of a controlled natural ventilation
à Processing of triggering signals of manual and automatic smoke alarms and smoke alarm systems
à Manual and automatic ventilation control (via vent switches, wind-rain sensors, room temperature sensor, etc.)
à Passing of all important operating states to external evaluation components
à Possibility of maintenance and conguration
à NRA/RWA operation in case of failure if the mains power supply via batteries
à Line monitoring of all the connected manual and automatic detectors as well as of the drive lines
à Optical operating and fault indications of rapid fault localisation
à Digital storage of important operating states and of the service settings
à Temperature sensor for temperature-dependent battery charging
3 Operation
3.1 Operation general
WARNING!
Danger of fatal injury in case of malfunctions during a re since the rescue routes can ll with smoke.
The system has to function free of faults.
X
Eliminate all the faults immediately.
X
If the yellow fault display of the RWA switch lights up, inform those responsible immediately.
Faults in the system have to be eliminated immediately.
X
Ensure that the operator of the system is instructed at least in the operating modes described below.
Manual triggering at alarm (EMERGENCY-OPEN)
X
Break the glass at the RWA switch and press the alarm switch.
Manual opening and closing of the ventilation
X
Press the OPEN or CLOSE switch at the vent switch or the ventilation control unit.
à Pressing the switch briey for approx. 1 second is sucient for latching (no continuous contact).
The process can be stopped by pressing the opposite switch.
à In the case of dead-man operation the ventilation only closes as long as the switch is pressed.
Automatic opening and closing (e.g. wind-rain control) takes priority over manual operation.
3.2 Ventilation mode
Opening and closing windows
The windows are divided into ventilator groups. The ventilator group has one or more vent switches with which
the windows of the ventilator group can be opened and closed together.
Opening width restriction
The service technician can specify a time-controlled opening width limitation of the windows for the ventilator
group. When the drives receive an Open signal via the vent switch, they stop after the specied opening time.
Further opening of the windows is not possible until the Close switch has been pressed.
The opening width limitation is only eective during ventilation operation, not during a re alarm.
Rain/wind control
If a rain/wind control is connected, all the windows are closed in the case of rain or strong wind. The vent
switches are then out of operation.