Start by deciding on a fixing location, as per the diagram below.
With the unit unlocked, remove the bolt with a twist and pull action. Remove the existing bolt cover by taking a flat head screwdriver and placing in the end slots of the plastic cover.
Place the plastic packer on the door, ensure you have at least 16mm clearance between the top of the body and the frame. Drill two 4mm pilot holes to suit fixing screws where marked.
If you have “keyed alike” your locks you will need to snap off the triangular cylinder stop on the back of he product using a flat head screwdriver and mount the lock using the 4mm packer or by drilling a 16mm clearance hole to provide clearance for the longer key.
Screw the lock body into position using the appropriate screws for the frame material. Replace bolt, check operation and refit screw cover. (N.B the timber screw has a sharp point and the aluminium screw has a flat tip).
Ferrule option. If you are securing the bolt into a jamb or door frame then, with the door firmly closed, tap the end of the bolt to mark the drilling location and drill a 13mm hole deep enough to take the full movement of the bolt.
Ferrule option. Hold ferrule in position over 13mm hole and mark fixing locations. Drill two 2.5mm holes to suit fixing screws and fix ferrule in position.
Keeper plate option. For use when the bolt doesn’t engage the door frame. With the door firmly closed, position keeper plate over locked bolt and mark location.
Keeper plate option. To fit the keeper plate, hold it in position and mark fixing locations, drill two 3mm pilot holes to suit fixing and fix keeper plate in position.
Ensure the bolt engages fully so that the key can be locked. Pull down the bolt to unlocked position and open the door to check that the bolt remains clear of obstacles when door swings open and close.