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Sensors
Safety Solutions
Room & System Solutions
(incl. VAV and room temperature controllers)

Room comfort
Controllers for VAV / chilled ceiling systems, etc.
Room temperature controllers for ventilation of apartments
Heated / chilled ceiling controllers (6-way)

Volumetric flow
and pressure control
VAV-Compact, dynamic
VAV-Universal, dynamic
VAV-Universal, static
System solution
VRP-M
VAV control system for controlled apartment ventilation

Fan control
Fan Optimiser

Retrofit
VAV-Retrofit products
VAV-Retrofit documentation
Retrofit-Tool
Bus & System Integration
Retrofit
Products A to Z
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VAV-Universal, dynamic (VAV-Control)
Universal VAV controllers with D3 dynamic differential pressure sensor
VAV actuators for VRD.. controllers

Application
Comfort zone   
Laboratory -
Industrial zone -
VAV: V'min...V'max   
CAV steps: V'min / V'max   
Override functions: OPEN / CLOSE / V'min / V'max   
Operating volumetric flow setting V’min / V’max ZTH EU /
potentiometer
Settings and parameters, diagnostic functions (test, trend, logging,
etc.) via the built-in service socket or, if not directly accessible, from
the control cabinet, floor distributor, etc.
ZTH EU

Bus integration via I/O
Universal VAV controllers with D3 dynamic differential pressure sensor

VRD3
       







Pressure sensor
Integrated, dynamic -20...600 Pa   
Operating range of VAV controller
2...300 Pa   
Nominal voltage
AC / DC 24 V   
Display
LEDs for 24 V supply and states   
VAV application
0...10 / 2...10 V   
CAV application
CAV contacts, switches   
LONWORKS integration
Via I/O   
EIB/Konnex integration
Via I/O   
Actuator
External, pluggable   
Settings, diagnostics
Locally or via control cabinet ZTH EU /
potentiometer
VAV actuators for VRD.. controllers

LM24A-V

NM24A-V

SM24A-V

LF24-V

SF24A-V
       







































Torque 4 Nm                   
5 Nm                   
10 Nm                   
20 Nm                  
Function Rotary actuator 0...95°                 
Spring return actuator 0...95°                  
Safety function Safety position OPEN or CLOSE                  
Adaptation Adaptation of the control range
to the damper angle of rotation
               
Display LED displays for 24 V supply and status                 
Running time VAV logic               
Supply From VRD.. controller               
Connection Pluggable, preassembled plug               




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