Maytag MLE20PD Instructions D'installation page 21

WASHER DRAIN SYSTEM
The washer can be installed using the standpipe drain system
(floor or wall), the laundry tub drain system, or the floor drain
system.
Standpipe drain system — wall or floor
The standpipe drain requires a minimum diameter standpipe of
50 mm (2"). The minimum carry-away capacity can be no less than
38 L (10 gal.) per minute.
Wall
The top of the standpipe must be at least 762 mm (30") high and
no higher than 2.4 m (96") from the bottom of the washer.
Floor
Laundry tub drain system
The laundry tub needs a minimum 76 L (20 gal.) capacity.
The top of the laundry tub must be at least 762 mm (30")
above the floor.
Floor drain system
The floor drain system requires a siphon break that may be
purchased separately.
The siphon break (Part Number 285834) must be a minimum
of 710 mm (28") from the bottom of the washer. Additional hoses
might be needed.
Syphon-
Break
710 mm
(28")
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