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9 Electrical installation
9.5 Hold-open system according to DIN EN 14637
Any hold-open system set up and operated according to DIN EN 14637 must be classified by the
installer. Classification is based on a 6-digit code, of which the 2nd and 6th places must be entered
on site according to the hold-open device used. Places 1, 4 and 5 are specified by DIN EN 14637 and
place 3 by the respective type approval.
Classification of a Hekatron hold-open system according to DIN EN 14637:
Hold-open system DIN EN 14637 3 5 1/2/4 1 1 3
Digit 1 2 3 4 5 6
Digit 1 – Application class:
Class 3: Frequent use by the public and other persons with a low inclination to care and diligence,
i.e. cases where misuse is probable to a certain degree.
Digit 2 – Stress test of the hold-open device:
Class 5: 50,000 test cycles
Hekatron’s electromagnetic door retainers comply with this class.
Digit 3 – Door type:
Class 1: Swing doors
Class 2: Sliding gates/doors
Class 4: Automatic swing doors
According to Hekatron’s type approval, the hold-open system may be used on doors of
classes 1, 2 and 4.
Digit 4 – Use on fire/smoke control doors
Class 1: Suitable for use on fire/smoke control doors.
Digit 5 – Safety:
Class 1: All hold-open systems must fulfil a critical safety function for which reason no other class
than the highest one is defined for using this standard.
Digit 6 – Corrosion resistance:
Class 3: High resistance
Hekatron’s electromagnetic door retainers comply with this class.
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