Inax RS Series, CW-RS3-W Installation And Use Manual

10. Avoid using front and rear washing functions excessively or for long periods of time as
such overuse may increase the possibility of washing away desirable resident bacteria and
causing an imbalance of bacteria in your body. If you are pregnant, are being treated for a
gynecological condition, develop excessive irritation in the area of use, or if you have
questions, please speak to your doctor before beginning or continuing use of the product.

2. Product description

This product provides features to enhance personal toilet hygiene and comfort. This product features
include a posterior wash, a bidet, a warm air dryer, and a seat heater, as well as controls for these
functions.
This product consists of a body (with heated toilet seat, toilet seat lid, warm water tank, and power cord),
hardware to mount the body on a toilet and connect it to the toilet water supply and this installation and
use manual.
This product is equipped with the following features:

posterior wash with water flow strength controls

•
bidet with water flow strength controls

•
warm air dryer with air temperature controls

•
seat heater with heat level control

•
wash and bidet water temperature control

•
seat and water temperature indicators

•
wash and bidet nozzle self-cleaning

•
stop button for the wash, bidet, and dryer

•

Note:

When carrying the product, take care not to inadvertently bump or drop it.

•
This product has been already inspected using tap water. A small amount of water may be

•
detected when installing the unit; this should not be a cause for concern.

5

3. Installing this product

Installation requirements

Before installing this product, ensure that each of the following installation requirements is met.

Product carton contents

Remove the parts from the product carton and make sure all the parts in the parts list (below) are
present. Inspect the parts carefully to make sure they are in good condition.
If any part is damaged or missing, do not install this product. Contact the nearest sales outlet for the
part(s) you need.
This product carton should contain the following parts:

Body (with heated toilet seat, toilet seat lid and power cord)

•
Slide plate

•
Manual set

•
Mounting bolts, washers, and bushings (2 pieces each)

•
Junction fitting (with a packing)

•
Body water supply hose (with 2 clips)

•

*Remote control unit and bracket are

packed in the box of the parts.

Body

Manual set

Slide plate

(This plate attaches to the body.)

Mounting bolt

Washer

Bushing

Remote control unit

Bracket

For remote control unit
Batteries (2) Wood screw Plastic anchor

Junction fitting

Clip

Clip

Water supply hose
(95 cm long)

Packing
(2 mm) thick

6

Ground fault circuit interrupter

A ground fault circuit interrupter must be installed in the circuit that supplies power to this product.

Power supply

This product is for use on a nominal 220 V circuit. Use a 220 V, 50 Hz power supply. The maximum
power consumption is 305 W. Electrical wiring must be installed that meets these conditions. The plug
outlet shall be placed in accessible location after installation.

Grounding

This product must be grounded. In the event of an electrical short circuit, grounding reduces the risk
of electric hazard by providing an escape wire for the electric current. The power cord has a grounding
wire and a three-blade grounding plug (shown below). Do not use an adapter with the product's power
plug, or use any other method to connect the plug to an improperly configured outlet.
The outlet to which the product is connected must be 220 V, 50 Hz, with a minimum electrical rating of 3
A. The outlet must be properly installed and grounded, and have a three-slot outlet (shown below).

DANGER:Improper use of the grounding plug can result in a risk of electric hazard.

If it is necessary to use an extension cord, use only a three wire extension cord that has a three-blade
grounding plug. The extension cord must be rated for at least 220 V, 50 Hz, 3 A.

220V

Installation location

This product is manufactured for family or personal use. In order to avoid damage to the electronic
components, prevent the body of this product from getting wet by drops or splashes of water. In
extremely humid conditions, please provide adequate ventilation by operating an exhaust fan or opening
a window (or door).

Water supply

Use only the tap water line to supply water to this product. There is danger of ground water or other
water that is not tap water causing trouble with this product.
The tap water pressure must be 0.06 to 0.74 MPa (0.6 to 7.5 kgf/cm

2

).

Checking the toilet room

The dimensions required for mounting this product on a
toilet are as shown in the figure below. Check to make
sure there is sufficient space inside the toilet room and
that there are no obstructions in the way.

120 or more

55.8

40 or more

3 or more

20.7

42.6

21.9

3 or more

Unit : cm

7

Checking the toilet

1. Measure the size of the toilet.

Depending on the toilet, it may not be possible to mount
this product on it.
Make sure the toilet's dimensions are as shown in the
figure at right.

14 to 15.7 cm

2.

In the case of a toilet with a corner
mounted tank, decide which is more
satisfactory, (1) or (2).

In the case of a corner mounted tank type toilet, it is
possible to mount this product if the dimensions A and B
meet the conditions in either (1) or (2) below.
(1) A: 17 cm or more
(2) A: 13 cm or more and

B: 17 cm or more
(3) A': 17 cm or more
(4) A': 13 cm or more and

B: 17 cm or more
If the measured dimensions satisfy neither (1) or (2),
(3) or (4), take measures such as raising the position
of the tank. (Please consult with the store where you
purchased this product.)

φ1.5 cm or more

A

80 cm or less

39 cm or less

5 cm or more

47 cm or more

A'

B

3. Conditions for use of this product's water
supply hose (packed with this product)

The length of the water supply hose shipped with this
product is 95 cm, but a length within 80 cm from the
junction fitting to the body's water supply socket is
appropriate. (See the figure at right.)

8

Names of parts

Overall view

<Bottom of body>

Remote control unit

(See page 10.)

Tank

Tank water supply pipe

Junction fitting

Water shutoff valve

Strainer
(See below.)

Water supply hose

Power plug

Caution label

Toilet seat lid

Deodorizer
cartridge cover

Deodorizer
cartridge

Marking label

Occupied seat sensor

Nozzle (for bidet)

Nozzle (for posterior)

Toilet seat

Body

Indicator panel

Power save lamp

Power lamp

Toilet bowl

Strainer

Strainer

* The strainer removes impurities and foreign matter in the

tap water. (See page 31.)

9

Operation panel

STOP

Stops posterior washing,
bidet washing, and drying
operations.

MASSAGE

Alternates spray strength
between strong and weak.

POWER

Pressing the stop switch
for 2 seconds or longer
turns the power on or off.
(See page 22.)

SHOWER

Use for posterior washing.

POWER SAVE

Pressing the toilet seat
switch and warm water
switch together for 2
seconds or longer turns off
the power to the toilet seat
heater and warm water
heater. (See page 26.)

BIDET

Use for bidet washing.

STRENGTH

Adjusts the spray strength
during posterior and bidet
washing. (See page 23.)

WATER TEMP.

Adjusts the water
temperature. (See page 22.)

DRY

Use when drying wet parts.
(See page 25.)

SEAT TEMP.

Adjusts the toilet seat
temperature. (See page 22.)

Warm water tank drain plug

<Bottom of body>

* Remove the warm water tank drain plug when draining the

water from the warm water tank. (See page 37.)

10

Warm water tank drain plug

Body locking plate

Body locking plate

Body

Lock lever

(See pages 33 and 34.)

Installation

1. Installation of branch fitting

Installation

Branch fitting

diagram

Packing
(color: black,
thickness: 2 mm)

Water shutoff valve

(1) Close the water shutoff valve.

Close the water shutoff valve

for the toilet very tightly with a
flathead screwdriver (or the valve
handle, if available) and shut off
the water supply.

Water shutoff valve

Close

CAUTION

Close the water shutoff valve before performing any

•
operations.

* If you perform operations without closing the valve,

you may experience water leaks.

(2)

(3) Attach the

Remove the existing water supply pipe.

1) Loosen the cap nut at the tank.
A small amount of water

may spill from the pipe
when loosening the cap

Tank

Supply pipe

Cap nut

nut. If this is a concern,
please place a rag
underneath to catch

Loosen

the spilled water before
loosening the nut.

2) Loosen the cap nut at the water shutoff valve and
remove the water supply pipe.

Supply pipe

Loosen

Water shutoff valve

CAUTION

Do not apply unnecessary force

•
on the water shutoff valve or water
supply pipe.

* Doing so may break the

connections and cause water leaks.

Branch fitting

branch fitting.

Set the gasket seat

packing (color:
black, thickness: 2
mm) in the branch
fitting and attach
the fitting to the
water shutoff valve.

Water shutoff
valve

2. Installation of water supply pipe

Installation diagram

Gasket packing
(color: blue,
thickness: 2 mm)

Cap nut

Water supply from the wall

CAUTION

Please verify the orientation and the installation

•
sequence for each part.

* If you attach the parts in an incorrect sequence or

inappropriately, it may cause water leaks.

CAUTION

Please do not cut the guard area of the supply pipe.

•

•

Use a pipe cutter when shortening the supply pipe. Please connect the shortened pipe only after cleaning the cutting burrs by rinsing it with water or

some other method.

•

If the water shutoff valve can move vertically 5 mm or more, first please securely affix the stop valve.

* This may cause water leaks.

Ball tap
(or ball valve)

Guard area

Supply pipe

Branch fitting

Tank

Cap nut

Cap nut

Split compression
ring

Slip washer

Gasket packing
(color: black,
thickness: 4 mm)

Insertion tolerance
(10 to 15 mm)

Branch fitting

Gasket packing
(color: blue,
thickness: 2 mm)

Ball tap
(or ball
valve)

Guard
area

Tank

Supply pipe

Water supply from the floor

(1) Shorten the water supply pipe.

1) Mark the end of the water supply
pipe (on the side without the
guard) for a cutting position which
is suitable for attachment to the
branch fitting and then increase
that amount by an additional
10 to 15 mm for some insertion
allowance.

2) Cut the water supply pipe at the
position determined above with a
pipe cutter.

Add 10 to 15
mm for insert
allowance.

Pipe cutter

11

(2) Attach the water supply pipe.

1) Place the cap nut for the tank and branch fitting, split
compression ring, slip washer, and packing (color: black,
thickness: 4 mm) on the shortened water supply pipe and
insert the pipe into the branch fitting. (Please see the
above installation diagram of the water supply pipe.)

Supply pipe

Branch fitting

2) Place the gasket packing (color: blue, thickness: 2 mm)
between the ball tap and the supply pipe, and attach the

Hose connection socket

supply pipe to the tank with the cap nut.

3) The cap nut for the branch fitting should be finger­tightened as much as possible, and then, additionally
tighten it with a wrench for another 3/4 to one full turn. Do
not over-tighten the nut.

(Tightening torque: 10 to 15 Nm ( 8-11 ft-lbs) or 100 to

150 KgF/cm)

While tightening the nut with a wrench, place a spanner

(monkey wrench) around the hexagonal area of the
branch fitting to hold it firmly, and then tighten the cap nut.

CAUTION

Tighten the cap nut

•
while securely grasping
the ball tap to prevent it
from turning.

* If the ball tap is rotated

out of position, the float
ball may make contact with the inside wall of the tank
and cause a water stoppage failure.

• Please be careful not to break or damage the hose
connection.

* Doing so may cause water leaks.

• Please firmly connect the water supply pipe.

* If the cap nut is not sufficiently tightened, it may

cause water leaks.

3. Installation of water supply hose to the shower
toilet (at the shower toilet body)

1)

Remove the protective cover

Installation diagram

from the end of the water supply
hose, and pull out the cap from the
water supply connection socket.

2) Connect the water supply hose
for the shower toilet into the water
supply connection socket.

Water supply connection socket

Water supply hose for shower toilet

3) Insert the attachment clip onto the
water supply hose to attach it to
the shower toilet and water supply
connection socket.

* The attachment clip can be attached in

any direction.

4) Bend the clip end and firmly clip
together both the feeding hose for
the shower toilet and the feeding
socket. After you install the clip,
twist it in both directions to verify
that it is firmly attached.

Clip

O-ring

Clip

Clip

Bend here

Water supply
socket

Protective cover

Water supply
socket

Water supply
hose for the seat

CAUTION

Please be careful not to damage the O-ring.

•
*If the O-ring is damaged, it may cause water leaks.

CAUTION

Please firmly insert the clip.

•
* If the clip is not firmly

inserted, it may cause
water leaks.

CAUTION

Please insert the clip

•
until you feel a click
from the clip edge.

* If not firmly inserted,

it may cause water
leaks.

O-ring

•

When removing the clip, hold
the clip with your fingers, set
the flathead screwdriver and
push the clip downward to
remove it as shown in the
figure below.

Flathead
screwdriver

12

4. Installation of the shower toilet

Installation diagram

Shower toilet

Caution

•

When installing the shower

toilet, make sure to use the parts
provided in the installation kit.

(2) Attach the slide plate onto the seat.

1) Insert the bushings into
the seat mounting holes.

Bushings

Seat mounting bolts

Mounting brackets
Slide plate

Bushing

Toilet seat mounting guide holes

2) Insert the mounting
brackets into the slide
plate and attach the slide
plate with the mounting
bolts on the seat.

Mounting bolts for the toilet

(1) Remove the existing

seat.

1) Remove the nuts from the
seat mounting bolts, the
slip washers, and rounded
packing.

2) Raise the seat and remove
it by lifting the seat mounting
bolts.

Seat mounting bolts

Existing seat

Nut

Loosen

References

Some toilet seats may require different methods

•
of removal that differ from our explanation.

•

The removed toilet seat should be stored in your

home in case you remove the shower seat.

Rounded packing
Slip washer

Mounting brackets

Seat mounting holes

(3) Attach the shower toilet.

1) Place the shower toilet on the toilet and align the ▽
mark on the slide plate with the △ mark on the rear
section of the shower toilet.

2) Slightly raise the front side of the shower toilet, slide it
until the slide plate is fully inserted, and then press the
locking lever to secure the shower toilet.

Slide plate

Shower toilet

1

2

Slide plate

* For the attachment lacations of

the mounting brackets, please see
"Checking the toilet seat."

CAUTION

When use of the slide plate is not

•
necessary, please retain the slide
using the attaching screw included in
the installation kit to prevent it from
moving or becoming lost.

Slide plate

Attaching screw

13

5. Attachment of the water supply hose for the shower
toilet (at the branch fitting)

Installation diagram

O-ring

Water supply hose
for the shower toilet

CAUTION

Please be careful not to damage the O-ring.

•
* If the O-ring is damaged, it may cause water leaks.

•

Please firmly insert the clip.

* If the clip is not firmly inserted, it may cause water leaks.

•

Please insert the clip until you feel a click from the clip edge.

* If not firmly inserted, it may cause water leaks.

Branch
fitting

Clip

Example of water supply from the floor

(1) Remove the

protective covers
from the ends of
the water supply
hose and insert
the hose into the
branch fitting.

(2) Attach the clip in the same manner as

it is attached on the shower toilet, and
then attempt to twist the clip from side
to side to make sure that it is firmly
attached.

When removing the clip, hold

•
the clip with your fingers, set
the flathead screwdriver and
push the clip downward to
remove it as shown in the
figure below.

Clip

Branch fitting

Protective
covers

Bend here

O-ring

Water supply hose

Clip

Flathead
screwdriver

6. Confirming water flow

Branch fitting area

Water supply socket area

CAUTION

• When water supply into the tank does not stop, or the

tank does not fill at all, please check if the float ball is
making contact with the inside wall of the tank.

• If so, please reposition it using the following procedure:

(1) Loosen the inside nut on the side of the tank and

vertically straighten the ball tap.

(2)

While holding the ball tap with your hand, tighten the nut.

• Please do not remove the strainer while the water shutoff valve is open.

• Doing so may cause water leaks from the strainer area.

(1) Turn the water shutoff valve

counterclockwise to open the supply
of water to the tank and shower toilet.

Branch fitting

Water shutoff valve

Turn counterclockwise.

(2) Operate the flush handle attached on

the tank and check each joint to see if
there are any water leaks.

* If water is leaking, further tighten the

connections, or re-install the shower toilet.

(3) Confirm that the water flow stops after

the tank is filled with water.

* If the tank does not fill with water, or the

water flow does not stop, please check
whether the ball tap and float ball are
functioning.

14