Design Guide
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 89
UNDERCOUNTER REFRIGERATION
Plumbing
The water supply line should be located within the shaded 
area shown in the illustrations below. The water supply line 
should be connected to the house supply with an easily 
accessible shut-off valve between the supply and the 
unit. Do not use self-piercing valves. A saddle valve kit is 
avail able through an authorized Sub-Zero dealer. For local 
dealer information, visit the nd a showroom section of our 
website, subzero.com.
IMPORTANT NOTE: A reverse osmosis system can be used 
provided there is constant water pressure as indicated in the 
chart below at all times. A copper line is not recommended 
for this application.
PLUMBING REQUIREMENTS
Water Supply 
1
/4" OD copper, braided 
stainless steel or PEX tubing
Pressure (UC-24CI) 20–100 psi (1.4–6.9 bar)
Pressure (UC-15I) 20–80 psi (1.4–5.5 bar)
Excess Line for Connection 36" (914)
3" (76)
15
1
/2"
(394)
2"
(51)
LEFT SIDE
OF OPENING
AREA EXTENDS 
1
/2" (13)
FORWARD ON FLOOR
LOCATION OF
WATER LINE
8"
(203)
1
/2"
(
13
)
TOP VIEW
Model UC-24CI.
Ice machine.
ICE MACHINE DRAIN
Ice machine models can be ordered with or without a drain 
pump. Models without a pump will drain water by gravity. 
A drain must be installed.
The drain and inlet water tubes must be plumbed before 
connecting to the ice machine. For the gravity drain, hori-
zontal drain lines must have a 
1
/4" (6) per 12" (305) fall. An air 
gap will likely be required between the unit and drain. 
A stand pipe with a trap below is acceptable for the drain.
BUILT-IN PRO 48 INTEGRATED WINE UNDERCOUNTER










