Puff - How do you connect the oven drain?

An air gap cup must be interposed guaranteeing a minimum clearance of 25 mm between the appliance’s plastic drain bend and the drain piping. Direct connections are prohibited.

WARNING: The drain must be outside the oven perimeter, Min. 300 mm./1 ft. and Max. 2000 mm / 7 ft.

It is prohibited to reduce the drain diameter.