SOMFY J4 WT Protect - 4. INSTALLATION IN AN EVB; 4.1. CUTTING THE HEAD RAIL; 4.2. ASSEMBLY IN A HEAD RAIL

J4 WT Protect Drive
Full installation guide
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4. INSTALLATION IN AN EVB
4.2. ASSEMBLY IN A HEAD RAIL
Details of assembly in each type of head rail are given on a single sheet.
The assembly procedure for the desired head rail can therefore be printed
out on one page for ease of display.
LIST OF HEAD RAILS:
58mm x 56mm head rail, open at the bottom
& and 57mm x 51mm head rail, open at the bottom p. 17
57 mm x 51 mm head rail, open at the top
& 58 mm x 56 mm head rail, open at the top
Assembly with external clips p. 18
57 mm x 51 mm head rail, open at the top
Assembly with internal clips p. 19
78 mm x 67 mm head rail, open at the bottom
Assembly with J406 and J410 drives p. 20
78 mm x 67 mm head rail, open at the bottom
Assembly with J418 drive p. 21
67mm x 66mm head rail, open at the bottom p. 22
4.1. CUTTING THE HEAD RAIL
To assemble a drive in a head rail that is open at the
top, a cut must be made so that the mushroom and/
or its extensions can pass through the head rail. This
cut must have the following dimensions (in mm):