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FDS...EX
Technical Parameters
CE certificate number:
FDS-3G...EX: 1396 - CPR - 0163
FDS-EI90S...EX, FDS-EI120S: 1396 - CPR - 0169
Atex certificate number:
FDS-3G...EX: FTZÚ 20 ATEX 0017X
FDS-EI90S...EX, FDS-EI120S: FTZÚ 20 ATEX 0016X
Explosion Proof Class:
{EX} II 2 D Ex h IIIB T85°C...T100°C Db, {EX} II 2 G Ex h IIB T6...T5 Gb. For activation type H2-EX the temperature class is
reduced to T85°C Db and T6 Gb
Durability test
• 50 cycles/manually operated activation mechanism – with no change of the required properties
• 10000 + 100 + 100 cycles/actuator operated activation mechanism – with no change of the required properties
Fire testing pressure
Underpressure up to 300 Pa
Safety position
Closed. (In fire scenario the damper closes via a spring in the actuator or a spring in the manual mechanism)
Airflow direction
Both directions
Allowed air velocity
Damper can still operate at max. 12 m/s. Air without any mechanical or chemical contamination
Side with fire protection
Depending on installation classification: From both sides (i <-> o)
Repeated opening
Suitable for daily check procedure. It is not possible to operate the device after reaching the activation temperature.
Activation Temperature
Temperature of the fire damper closing
• Manually operated: 74 °C by means of a spring after the melting of the thermofuse
• Actuator operated: 72 °C by means of the spring after current interruption in the electro-thermal fuse
Operational temperature
Permissible temperature in the duct and its surroundings
• Minimum: 0 °C, for all types of mechanism
• Maximum: 60 °C for 74 °C and 72 °C thermofuse (All mechanism types); 85 °C for 100 °C thermofuse (mechanism
type H0)
Environment suitability
Protected against weather disruptions, with temperature above 0 °C (3K5 according to EN 60721-3-3)
Open/Closed indication
• Manually operated microswitches - Activation types H0-EX and H2-EX
• Actuator operated built-in microswitches - Activation types SET-EX and SRT-EX
Closing/Opening time
Manually operated < 10 s, actuator operated < 20 s
Inspection possibility
By opening of the inspection lid. For smaller sizes than 200 mm after removing the activation mechanism, or an
inspection opening must be added to the connected duct.
Summary of Contents for FDS-3G EX Series
Page 1: ...FDS EX Atex Fire Damper ...
Page 8: ...8 70 FDS EX Product parts ...
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Page 57: ...57 70 FDS EX 5 4 On Out FDS 3G EX 100 100 1200 800 EI 60 ve i o S a b ...
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Page 63: ...63 70 FDS EX 7 Multi FDS EI90S EX W 1600 H 1000 EI 90 ve i o S b ...
Page 70: ...Systemair DESIGN 2021 04 27 Handbook_FDS_EX_en GB ...