Grohe Axor Citterio M 34010XX1 Installation Instructions Manual page 5

Connect the hot and cold supply hoses to the stops with
3/8" compression fittings (not included).
Use two wrenches, as shown, to prevent the hoses from
twisting.
Set the high temperature limit stop, if desired.
Install the pop-up drain.
Set the High Temperature Limit Stop (optional)
Use a 3 mm Allen wrench to push the screw cover
3 mm
through the handle.
2 x
Use the Allen wrench to loosen the handle screw 2
complete revolutions.
Remove the handle.
Retrieve the screw cover.
Remove the flange.
Remove the high temperature limit stop.
Replace the high temperature limit stop so that the pin on
the cartridge is in the desired slot on the limit stop.
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