The THZ N4 and THZ Comfort replace the previous versions and offer a more powerful power supply, increased connectivity and easier installation. Control units are the brain and the power supply of the smoke and heat extraction systems in a building.

In addition to extracting smoke from staircases the THZ N4 and THZ Comfort can also be used for smaller smoke and heat extraction systems such as a foyer and are suitable for use on new buildings and retrofitting. In large event venues with smoke extraction installed in the roof or with a machine smoke extraction system the THZ N4 is particularly suited for operating fresh air drives such as GEZE’s RWA K 600.

Both versions have received a hardware and capability upgrade; the more powerful power supply enables an increased output of 4.5A from the 3.4A in previous models which broadens the panel’s specification possibilities and allows more drives to be connected.

The motor line connection has also been upgraded to a spring level motor terminal to allow for easier installation and both can now be interfaced with the GEZE ST 220 service terminal for quick and easy commissioning.

Both control panels have a compact and attractive design; the THZ N4 has a plastic housing in white whilst the THZ Comfort has a robust metal housing in orange.

Andy Iredale, National Sales Manager for Automatic Doors and Window Control, said “These new control units offer even more options for smoke and heat extraction as more drives can be connected due to the more powerful power supply which in turn allows more options on where they can be used"

Key features

  • Compact and attractive design with a very robust metal housing

  • Increased safety due to integrated, illuminated RWA and ventilation button

  • Adjustable backlight of the SHEV button

  • Safety and reliability confirmed by VdS recognition and TÜV test

  • Highest flexibility due to extensive parameter setting options

  • Quick and easy commissioning with the ST 220 service terminal

  • Reduced installation effort thanks to integrated push buttons

  • Interconnection of several staircase control panels via potential-free contacts

Application areas

  • Smoke extraction in staircases

  • For smaller smoke and heat extraction solutions with one fire compartment

  • Connection options for smoke detector, FT 4 push button, fire alarm system contact, vent switch and weather sensors

  • For smoke and heat extraction system drives with a total power consumption of 4.5 A

  • Control of electromotive 24 V drives for smoke and heat extraction in the event of a fire

  • Control of a controlled natural ventilation

  • Suitable for new buildings and retrofitting

Technical data

THZ Comfort N4

Dimensions

140 x 248 x 85 mm

Width

140 mm

Height

248 mm

Depth

85 mm

Material

Aluminium die casting

IP rating

IP30

Service temperature

-5 - 40 °C

Operating voltage

230 V AC

Power consumption (max.)

120 W

Connection cross-section / mains

1.5 mm²

Output voltage

24 V DC +/-15%

Residual ripple

2 %

Output current (max.)

4.5 A

Duty rating with maximum output current

30 %

Motor cable wire size

4 mm²

Battery capacity

2.3 Ah

Alarm groups

1

Vent groups

1 x

Networking of several control units

Forwarding of alarm and reset signals for linking up to 10 control units

Signal outputs available

3 status contacts for which parameters can be set

Parameter setting of control units

Service push buttons and 5 LEDs or ST 220

Standard conformity

EN 12101-10, ISO 21927-9

Approvals

VdS