GE PNRQ21LBN - Manual (Page 16)

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).
1 ″
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.
16