Sub-Zero UC15IO - Manual (Page 7)

Plumbing Requirements
DRAIN CONNECTION
Models UC-15I and UC-15IO are gravity drain models that
require a drain tube that is pitched down from the outlet at
the back of the unit to the sanitary sewer connection.
Models UC-15IP and UC-15IPO have a built in drain pump
that will pump water up to a drain point, such as a sink.
Gravity drain models are supplied with a drain hose for
gravity draining. A pump model must be used if a gravity
drain is not possible. Both drain methods require routing
to an open site drain. Do not connect directly to a drain
line as bacteria from the drain line may contaminate the
ice machine. Locate the drain in an adjacent cabinet.
Refer to the illustrations below. For installations that will
not allow the drain to be placed in an adjacent cabinet,
the drain must be located within 1 / 2 " (13) of the back wall.
Ice Machine Specifications 7
subzero.com/specs
Improper drainage can lead to water flowing back into
ice machine and poor performance.
SHUT-OFF
VALVE
WATER
SUPPLY
DRAIN
TUBE
Gravity drain models. Drain pump models.
DRAIN TUBE
SHUT-OFF
VALVE
AIR GAP
WATER
SUPPLY
• The ice machine drain connection is approximately
5" (127) from the floor.
• For the gravity drain, all horizontal runs of drain lines
must have a 1 / 4 " (6) per 12" (305) fall.
• Drain pump models have a maximum rise of 12' (4 m)
and a maximum run of 100' (31 m) .
• Drain pump models will likely require an air gap
between the unit and the drain receptacle.
• The floor drain must be large enough to accommodate
drainage from all drain lines.
• The drain pump discharge line must terminate at an
open site drain.
• If there is not adequate room behind the ice machine
for the drain or waste water receptacle, the drain can
be located below the floor.
WATER FILTER
The water filter provided with the ice machine is designed
to inhibit scale formation, filter sediment, and remove
chlorine odor and taste. The life expectancy of the water
filter is approximately six months during normal usage.
The ice machine control board will monitor water usage
and indicate when replacement is required.
Replacement water filters are available through your
authorized Sub-Zero dealer. For local dealer information,
visit the find a showroom section of our website,
subzero.com.