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Installation Instructions
FILTRATION DRAIN CONNECTION (cont .)
PREFERRED INSTALLATION:
OPTION C—WET-VENTED P-TRAP
INSTALLATION
Install a p-trap under the sink to be used exclusively for
the Reverse Osmosis drain line.
A wet-vented p-trap is a p-trap that shares a common
vent/stack. Attach the drain line adapter to the p-trap
and secure it with the slip joint nut and washer as
shown. The drain line MUST be routed through the air
gap provided in the RO water faucet. Locate the
Reverse Osmosis p-trap as high as possible (minimum
of 4” above horizontal).
SECONDARY INSTALLATION:
OPTION D—DRAIN LINE ADAPTER
INSTALLATION
CAUTION: Using Option D may result
in clogging under adverse conditions and requires
periodic inspection/cleaning
by the user.
DO NOT INSTALL THE DRAIN LINE DOWNSTREAM OF
A DISPOSER OR IN A HORIZONTAL PIPE. Install the
drain line adapter under the sink as shown (parts
included). The baffle tee shown must be installed to
prevent a clog in the Reverse Osmosis drain line. Route
the drain line from the air gap to the drain line adapter,
ensuring that there are no dips, loops or low spots in
the line. The drain line adapter should be aligned
vertically so that the hose connection points upward
(the hose connection should never be allowed to drop
below 45° from this vertical position). This installation
MAY result in a slight drain noise in the sink drain when
the Reverse Osmosis system is regenerating. If this
happens, simply place the sink drain stoppers
in the strainer to suppress it.
Reverse
Osmosis
drain line
Optional disposer
Reverse
Osmosis
drain line
4” minimum
Drain line
adapter
Maximum 45°
Baffle tee
(mandatory)
Optional
disposer
From second
sink or
disposer
45°
From faucet air gap
Drain line
adapter
Drain line connection should
be
180° opposite existing
horizontal pipe/baffle-tee as
shown in diagram
Drain line adapter
Proper drain line adapter orientation.
17