Market leader in Climate technology

GSX gas fired air heater

high efficiency air heater

Economical heating with the GSX

With the Mark GSX Heat is generated via a premix-burner and blown out by means of an axial fan. The robust air heater is particularly suitable for industrial use and is very economical thanks to its low gas consumption, low maintenance and long lifespan.

The GS+ is operated using an Optitherm+ clock thermostat or an Interface+ module that allows a connection with the BMS (building management system) via Modbus or 0-10V.

The Mark GSX series fully complies to the new Ecodesign 2018 and has a capacity range of 16,7 to 83,9 kW.

The GSX is suitable to heat garages, warehouses, workshops, distribution centers, showrooms and more.

Mark provides a 2 year full product warranty as standard and up to 10 years reducing warranty with the stainless steel heat exchanger.

Features of the Mark GSX

  • Long lifespan
  • Low operating costs
  • Robust
  • Reliable
  • Uniform temperature distribution through high air displacement
  • Small difference between supply air and room temperature
  • Control up to 8 units possible via a 2-wire bus system
  • Zone heating possible via 1 control (up to 8 zones)

Standard equipment

  • Stainless steel heat exchanger
  • Closed combustion circuit
  • Premix burner
  • Electronic ignition
  • Aluzinc coating
  • Powerful axial fan(s)
  • Downflow hood with horizontal louvres
  • CE-approval
  • No condensation pipe required

Controls/to be applied for:

interface module


Article code: 0629188 An Interface+ can be used in two ways. 1. Power control: An externally supplied 0-10VDC signal...

digital clock thermostat


Article code: 0629189 The OptiTherm+ is a digital clock thermostat with internal room sensor with which 1 or more...

External Room Sensor

Item: 0629194 External room sensor to be connected to the GNSD/GNCD or GS+/G(C)+ air heater. With the external room...

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