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Dorma ED 100/250 Technical Specs & Installation Dimensions

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Operator Housing Dimensions

The following table lists the length dimensions for different operator cover variations.

Operator Cover Lengths
Model / Cover Type Length (mm)
Basic 685
Basic RM (with Integrated Smoke Detector) 735
Vario / Professional 900 - 1600

Installation Configurations

Technical data for various mounting positions and arm types.

Slide Channel (Pull Version) - Hinge Side

Configuration: EN 3-6 slide channel (pull version) on hinge side with ED 100 or ED 250.

  • Mounting: Hinge side
  • Arm Type: Slide Channel

Slide Channel (Push Version) - Opposite Hinge Side

Configuration: EN 3-4 slide channel (pull version) on opposite hinge side with ED 100 or ED 250.

  • Mounting: Opposite hinge side
  • Arm Type: Slide Channel
  • Note: Not suitable for fire and smoke doors.

Standard Arm (Push Version) - Opposite Hinge Side

Configuration: EN 3-6 arm (push version) on opposite hinge side with ED 100 or ED 250.

  • Mounting: Opposite hinge side
  • Arm Type: Standard Arm (Push)
  • ED 225 arm: max. 225 mm
  • ED 500 arm/ED 100: > 226-300 mm
  • ED 500 arm/ED 250: > 226-500 mm (max 350 mm with 90 mm spindle extension)

EN 7 Arm (Push Version) - Opposite Hinge Side

Configuration: EN 7 arm (push version) on opposite hinge side with ED 250.

  • Mounting: Opposite hinge side
  • Arm Type: EN 7 Arm (Heavy Duty)
  • ED 225 arm: max. 125 mm

Component Dimensions

Spindle Extensions

Dimensions for axle extensions relative to the operator spindle center.

Spindle Extension Dimensions (mm)
Extension Length Dimension A (Axis Vertical Position) Dimension C (Total Clearance)
Standard 22 31
20 mm 42 51
30 mm 52 61
60 mm 82 91
90 mm (ED 250 only) 112 121

Pivot Pins

Dimensions for arm pivot pins.

Pivot Pin Dimensions (mm)
Pivot Pin Dimension B (Pin Height) Dimension D (Total Height)
12.5 mm 29 19
25 mm 42 32

Minimum System Widths

Required minimum widths for different installation setups to ensure proper operation.

Standard Configuration

  • Standard: min. 1,400 mm
  • With ESR door coordinator: min. 1,450 mm
  • With integrated emergency power supply: min. 1,610 mm (Standard) / min. 1,700 mm (CPD arm)

Asymmetrical Door Systems

Minimum door leaf width requirements for asymmetrical double doors:

  • General: 630 mm
  • CPD arm configuration: 630 mm
  • EN 3-6 arm (push) configuration: 510 mm
  • EN 7 arm (push) configuration: 610 mm
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