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en-us_main.book.book Page 20 Tuesday, February 13, 2024 3:18 PM
20 INSTALLATION
• Where reverse osmosis water filtration
system is connected to a cold water supply:
- 40 - 60 psi minimum to reverse osmosis
2
system (2.8 kgf/cm
- 4.2 kgf/cm
2 - 3 seconds to fill a cup of 7 oz capacity)
If the water pressure from the reverse osmosis
system is less than 20 psi or 138 kPa or 1.4 kgf/cm
(takes more than 4 seconds to fill a cup of 7 oz or
198 cc capacity):
• Check to see if the sediment filter in the reverse
osmosis system is blocked. Replace the filter if
necessary.
• Allow the storage tank on the reverse osmosis
system to refill after heavy usage.
• If the water pressure remains low, call a
licensed, qualified plumber.
• All installations must be in accordance with local
plumbing code requirements.
Supplies Needed
• Copper or PEX Tubing, ¼ in. outer diameter, to
connect the refrigerator to the water supply. Be
sure both ends of the tubing are cut square. To
determine how much tubing you need, measure
the distance from the water valve on the back of
the refrigerator to the water supply pipe. Then,
add 8 feet (2.4 m). Be sure there is sufficient
extra tubing (about 8 feet [2.4 m] coiled into 3
turns of about 10 in. [25 cm] diameter) to allow
the refrigerator to move out from the wall after
installation.
• ½ in. or adjustable wrench.
• Flat-blade and Phillips screwdrivers.
• Two ¼ in. outer diameter compression nuts
and 2 ferrules (sleeves) to connect the copper
tubing to the shutoff valve and the refrigerator
water valve. If you are using a PEX water line kit,
it may already have the required fittings at either
end.
• If your existing copper water line has a flared
fitting at the end, purchase an adapter (available
at plumbing supply stores) to connect the water
line to the refrigerator OR cut off the flared
fitting with a tube cutter and use a compression
fitting.
NOTE
• The hookup line cannot be white, plastic tubing.
Licensed plumbers must use only copper tubing
2
, or less than
(NDA tubing #49595 or #49599) or Cross Link
Polyethylene (PEX) tubing.
• Be sure there is sufficient extra tubing (about 8
2
ft. coiled into three turns of about 10 in.
diameter) to allow the refrigerator to move out
from the wall after installation.
Connecting Water Line to
Refrigerator
1
Connect the tubing to the shutoff valve.
• Place the compression nut and ferrule
(sleeve) onto the end of the copper tubing
and connect it to the shutoff valve. If you
are using PEX, the tubing may already have
the required fittings at either end. Make
sure the tubing is fully inserted into the
valve. Tighten the compression nut
securely.
a
b
c
d
2
Flush out the tubing into a bucket.
• Flush out the tubing coming from the home
water supply until the water is clear. Shut
the water off at the water valve after about
one quart of water has been flushed
through the tubing.
Packing Nut
Shutoff Valve
Compression Nut
Ferrule (sleeve)
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