Alpina SUNDEAR XD-YS2000 Manuel D'utilisation page 9

A wall mounting bracket is provide with the heater which has been
specifically designed to allow this product to be fitted to a wall or
ceiling before drilling the holders for the wall/ceiling is solid and that
there are no hidden water pipes or electric wires. The heater must be
installed no less than 16'' form side walls and no less than 6"' off the
floor.
Important: Ensure that the supply cables is well mounted and that it
does not come into contact with reflector of the heater or that is does
not trail into heated area, the supply cable can be fixed to them metal
mounting bracket behind heater with plastic zip ties
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