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2 - INSTALLATION
• Read all installation and operating instructions before installing
and using your RO system.
• Numbered diagrams correspond with numbered steps.
1 - Installing the water supply adapter
The supply adapter fits 1/2" 14 NPS threads. If local codes
permit, it may be used to connect the RO-2500 to the cold
water supply line. If local codes do not permit the use of the
supply adapter, alternate connectors can be obtained from
your local plumbing wholesaler.
Directions
(A) Turn off cold water inlet supply line. If cold water line
does not have a shut-off valve under the sink, you should
install one.
(B) Turn on the cold water faucet and allow all water to drain
from line.
(C) Disconnect cold water line from 1/2" 14 NPS threaded stub on bottom of main faucet.
(D) Using the nut that previously connected the cold water line to the faucet, screw the cold water line to
the male supply adapter threads.
2 - Selecting the faucet location
The drinking water faucet should be positioned with function,
convenience and appearance in mind. An adequate flat area
is required to allow faucet base to rest securely. The faucet
fits through a 1
1
⁄
" hole. Most sinks have pre-drilled 1
4
1
3
/
" diameter holes designed for spray hoses. The drinking
8
water faucet may be installed using one of these holes,
despite their larger size. If these pre-drilled holes cannot be
used or are in an inconvenient location, it will be necessary to
drill a 1
1
⁄
" hole in the sink or through countertop next to the
4
sink for the faucet.
CAUTION:
This procedure may generate dusts which can
cause severe irritation if inhaled or come in
contact with the eyes. The use of safety glasses
and safety mask for this procedure is
recommended.
CAUTION:
Do not attempt to drill through an all-porcelain or porcelain-coated sink. For applications on
these types of sinks we recommend using the sprayer hole or mounting the faucet through the
countertop.
CAUTION:
When drilling through a countertop make sure the area below the drilled area is free of wiring
and piping. Make certain that you have ample room to make the proper connections to the
bottom of the faucet.
CAUTION:
Do not drill through a countertop that is more than 1" thick.
CAUTION:
Do not attempt to drill through a tiled, marble, granite or similar countertop. Consult a plumber
or the countertop manufacturer for advice or assistance.
The following instructions apply to stainless steel sinks ONLY.
(A) Line bottom of sink with newspaper to prevent shavings, parts or tools from falling down the drain.
(B) Place masking tape over the area to be drilled to help prevent scratches if drill bit slips.
(C) Mark point with centre punch. Use a 1/4" drill bit to drill a pilot hole through sink.
(D) Use a 1
1
⁄
" hole saw to enlarge hole. Smooth rough edges with a file.
4
1
C
D
2
1
⁄
" or
2
Pilot Hole
1
1
/
"
4
D
5
B
A
B
1/4"
C
A
Mounting Hole
E
N
G
L
I
S
H
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