ATEX Fan Coil Heater

The WWH Ex-series is engineered for use in ATEX-zones 2 (gas) and 22 (dust) and direct connection to your existing central heating system. This ATEX heater can be applied for heating your production or storage areas.

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The Ex-series WWH is designed to work in ATEX zones 22 (dust) and 2 (gas). The heater is directly linked to your current radiant heating system. This ATEX warmer can be used in manufacturing and storage fields.

The consistent temperatures of our heaters safeguard your goods and materials and also promote a stable and pleasant working atmosphere. The heaters may also be used for drying applications, after a site has been cleaned.

Common uses for our explosion proof fan coil heaters are found in the chemical sector, the oil & gas industry, the pharmaceutical industry and the food industry.

Explosion Proof Thermostat

We optionally provide an explosion proof thermostat to regulate the temperature in the hazardous area.

Explosion Proof 5 Phase Fan Regulator

The heater has a specially built explosion proof 5 phase fan speed regulator provided with them and as a result, you’ll be able to easily modify the heating capacity in the hazardous area. The five phase fan controller is located in a sturdy control cabinet.

All of our explosion proof heating systems are supplied with the following features:

  • ATEX Certification
  • Instructions For Use
  • Installation guidance for hazardous areas
  • Declaration of conformity Class 3G/D


Product Sheet: ATEX Certified WWH Heater

WWH Heater Certificate

WWH Heater Certificate


Additional information


From 10 up to 80 kW (9 different sizes)


230 VAC, 50/60 Hz

Heater Technology

Hot Water: 50/30°C – 90/70°C


1200 – 8000 m3/hr


Smallest model: 505mm x 505mm x 250mm
Largest model: 834mm x 834mm x 530 mm

Weight (including water)

Smallest model: 20 kg
Largest model: 65 kg

EU Directive

2014/34/EU (ATEX 114)

ATEX marking gas

3G Ex nA h IIC T4 Gc

ATEX marking dust

3D Ex tc h IIB T135°C Dc

Applied Standards

EN 60079-0; Explosive atmospheres – Part 0: Equipment – General requirements

EN 60079-15; Explosive atmospheres – Part 15 : Equipment protection by type of protection "n"

EN 60079-31; Explosive atmospheres – Part 31: Equipment dust ignition protection by enclosure "t"

EN 80079-36; Explosive atmospheres : Non-electrical equipment for explosive atmospheres – Basic method and requirements

EN 80079-37; Explosive atmospheres : Non-electrical equipment for explosive atmospheres – Non-electrical type of protection “h”