Whirlpool CAE2743BQ Installation Instruction

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DRAIN SYSTEM
Drain system can be installed using a floor drain, wall standpipe, 
floor standpipe, or laundry tub. Select method you need.
Floor standpipe drain system 
Minimum diameter for a standpipe drain: 2" (51 mm). Minimum 
carry-away capacity: 10 gal. (38 L) per minute. Top of standpipe 
must be at least 39" (990 mm) high; install no higher than  
96" (2.44 m) from bottom of washer.
Laundry tub drain system
4.5"
(114 mm)
4.5"
(114 mm)
39"
(990 mm)
39"
(990 mm)
4.5"
(114 mm)
Wall standpipe drain system
See requirements for floor standpipe drain system.
Floor drain system
Floor drain system requires a Siphon Break Kit (Part Number 
285834). Minimum siphon break: 28" (710 mm) from bottom  
of washer. Additional hoses may be needed.
Minimum capacity: 20 gal. (76 L). The top of the laundry tub  
must be at least 39" (990 mm)
 
above floor.