Kohler K-5401X User manual

Installation Guide
Integrated Toilet

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1226975-X2-B
English page 1-16

©2015 Kohler Co.
K-5401X

1226975-X2-B 2 Kohler Co.
Important Information
CONSUMER RESPONSIBILITIES
If you live in a hard water area, make certain that the holes in the toilet rim are kept clean to ensure proper
bowl ushing. Toilet bowl cleaners should be used at least once a week. Use a long-handled brush to clean the
rim holes, and to clean as far into the trap as possible to prevent mineral deposits from forming.
Most toilet bowl cleaners are not harmful to the vitreous chin or the surface of the toilet bowl. Please follow
the bowl cleaner manufacturer's instructions carefully.
Do not use abrasive cleaners or solvents.
WARNING: Risk of property or product damage. Kohler Company shall not be responsible or liable
for any damage to these ings caused by the use of cleaners containing chlorine (calcium hypochlorite).
CAUTION: Risk of product damage. Improper use of the grounding plug can result in a risk of electric
shock.
Do not use the product in the water below 1 C.
NOTE: Refer to "Homeowner's Guide" for the cleaning and maintenance of bidet seat.
NOTE: Flush the water supply pipes thoroughly to remove debris. Product is designed for tap water or potable
water.
Thank You for Choosing Kohler Company
Thank you for choosing Kohler. Kohler craftsmanship oers you a rare combination of proven performance
and graceful sophistication that will satisfy you for years to come. The dependability and beauty of your Kohler
product will surpass your highest expectations. We’re very proud of our products here at Kohler and we know
you will be too.
Please take a few minutes to review this manual before you start installation. If you encounter any installation
or performance problems, please don’t hesitate to contact us. Our phone numbers and website are listed on
back cover.
All information in this manual is based upon the latest product information available at the time of publication.
At Kohler, we constantly strive to improve the quality of our products. We reserve the right to make changes in
product characteristics, packaging or availability at any time without notice.
Thank you for choosing Kohler Company.
Tools and Materials
Drill with Assorted Bits
Assorted
Screwdrivers
Adjustable Wrench
Plus:
• Protective Material
• Tape
Offset Screwdriver
Knife Pencil Pliers Band Tape
Scissors

Kohler Co. 3 1226975-X2-B
Before You Begin
¨Please read the following instructions carefully and familiarize yourself with the required tools, materials,
and installation sequences. Follow the section that pertain to your particular installation. This will help you
avoid costly mistakes. In addition to proper installation, please also read all operating and safety instructions.
¨ All information in the instructions is based upon the latest product information available at the time of publication.
Kohler China reserves the right to make changes in product characteristics, packaging, or availability at any time
without notice.
¨These instructions contain important care, cleaning, and warranty information - please leave instructions for
the consumer.
¨We appreciate your commitment to Kohler quality. Please take a few minutes to review this manual before
installation. If you encounter any installation or performance problems, please don't hesitate to contact us.
Thanks again for choosing Kohler Company.
¨Pre-arrange enough space for toilet installation. Make sure it will not aect the opening and closing of the
door.
¨Conrm the rough in 305 mm, it need reach to 292~350 mm, otherwise it may aect installation.
¨Conrm the distance the water outlet connector away from the nished wall: upper the surface of
nished wall by 3 mm and lower the surface of nished wall by 5 mm otherwise it may aect installation.
¨Recommend using the main inlet hose at least DN 15 mm to make sure the following request of water supply
conditions.
¨Measure water conditions before buying the product, there are two measure ways as following.
NOTE 1. If combined with other faucets in the bathroom, make sure the water condition meets minimum
requirement.
2. Use the hose and Tee valve of this toilet.
3. Make sure meet the following water supply condition request before installation.
Simple way to measure water volume:
Prepare a bucket. Fully turn on the tee valve. Firstly ush three times and test. Fill the bucket with water into
the bucket for 10 seconds. The minimum water volume is advised to be above 5.7 L.
Product Inlet Hose
Product Tee Valve

1226975-X2-B 4 Kohler Co.
Before You Begin (cont.)
Simple way to measure water volume 2:
Aention: must use dedicated water supply capacity testing device. After the ball valve is opened, rstly ush
three times and test.
The minimum dynamic pressure for the testing device is advised to be above 0.46 Bar. (kgf/cm2) [0.046 Mpa] (6.7 psi).
Pressure Gauge
Ball Valve
Product Inlet Hose
Hose
Product Tee Valve
DANGER: Risk of electric shock. Disconnect power before using.
WARNING: Risk of electric shock. Connect only to circuits protected by Ground-Fault Circuit-
Interrupters (GFCI) or Earth-Leakage Circuit-Breakers (ELCB).
CAUTION: Risk of hazardous gases. If a new toilet is not installed immediately, temporarily place a rag
in the oor ange opening.
WARNING: Risk of electric shock for hardwire installations/through-oor electrical supply. Connect
only to properly-grounded, dedicated 220~240 V, 10A, 50/60 Hz circuit protected by a Class A Ground-Fault
Circuit-Interrupter (GFCI) or Earth- Leakage Circuit- Breaker (ELCB).
WARNING: Risk of electric shock. Must use 10 A receptacle.
NOTICE: Follow all local plumbing and electrical codes.
NOTICE: Receptacles installed in bathrooms to be located at least 1 meter from a bathtub or shower if practical.
Observe all local plumbing and building codes.
¨Carefully inspect the new toilet for damage.
¨Water and electrical supplies may be wall mounted.
¨There is a wiring schematic on the inside of the of the junction box cover.

Kohler Co. 5 1226975-X2-B
Measurements
Specications
160
900
438
533
150
250 250
58
150
305
670
Remote control
Finished Wall
Water Outlet Finished Floor
Tee Valve (with Filter)
Inlet Hose
10A Waterproof
Socket
(Grounding Type)
Flushing Volume 3L/4.8L
Minimum Distance from Hole to Wall 305mm
Lowest Supply Condition (Recommend) 1 Bar. (kgf/cm2) [0.1Mpa] (Dynamic Pressure)
Highest Supply Condition 7.4 Bar. (kgf/cm2) [0.74Mpa] (Static Pressure)
Electrical Power 220~240V, 50/60 Hz, 1000 W
Power Cord Length About 1.3 m
Outline Dimension of Product 670 x 438 x 533 mm
Product Weight About 46 kg
Operation Environment 1-40 °C
NOTE: "Homeowner's Guide" for detailed specications of the bidet seat.
Dimensions are approximate.
Unit: mm

1226975-X2-B 6 Kohler Co.
A. Hold the rim of the vitreous shell and take out the toilet.
Overall Sketch
Preparations Before Installation
Crash pad x 4
Seat (Anti-microbial)
Cover (Antibiosis)
Nozzle
Seating sensing area
Press the button to enter Rear Wash mode.
Press it again to turn it off.
Light sensing area
Press Warm wind button to start the warm wind function.
Press it again to turn it off.
Press the button to turn off the power (long tone hint).
Press the button to turn off the night light function
(long tone hint). Press it again to turn on (short tone hint).
Press the button to enter front Wash mode.
Press it again to turn it off.
Press the button for flushing.
Toilet
WARNING: Risk of of personal injury and product damage. Please do not hold the rim of the bidet seat
when lifting the toilet. As the toilet is heavy, please seek help if necessary.

Kohler Co. 7 1226975-X2-B
B. Place an 800 x 800 mm cushion on the oor, take out the toilet from the carton then put the
toilet on it.
Installation
A. To Remove Existing Toilet
Turn o the water supply. Flush the toilet, and use a sponge to remove the remaining water from the tank and
bowl. Disconnect the supply shut-o valve (if present), and remove the old tank and bowl.
Remove old gasket from the oor and closet ange with a puy knife. Remove old T-bolts and discard them.
NOTICE: if a new toilet is not installed immediately, temporarily stu a rag in the closet oor ange.
Closet Floor Flange
Preparations Before Installation (cont.)

1226975-X2-B 8 Kohler Co.
B. Roughing-In
Unit: mm
C1. Conrm the drain hole center and mark down the “+” centerline perpendicular to the nished wall.
2. Conrm the toilet drain hole center and mark down the centerline on Front, back , left and right outside of
toilet.
3. Make sure the toilet side mark symbol is align to the drain hole centerline on the nished oor. Mark down
the left and right holes.
DANGER: Risk of electric shock. Disconnect power before servicing.
WARNING: Risk of electric shock. Connect only to circuits protected by Ground-Fault
Circuit-Interrupters (GFCI) or Earth-Leakage Circuit-Breakers (ELCB).
NOTE: Keep bath and shower away from electrical parts (such as remote controller, receptacle, etc.).
When the electrical supply is mounted on the wall, a GFCI or ELCB protected and water proof receptacle is
required.
NOTE: This product is designed to work with wall mounted electrical and water supplies as shown in the
mounting dimensions.
250 ± 10 250 ± 10
200 ± 5
85 ± 5
150 ± 10
305
Hole (Two Sides)
Mark Symbol
305 mm
Installation (cont.)

Kohler Co. 9 1226975-X2-B
D. Drill two holes and insert two anchors and bolts.
3/8
Bolt
(10 mm)
E. Install the Electrical Service and Water Supply.
F. Install the Floor Flange.
Silicone on the opposite side of oor ange. Position the oor ange align the drain hole, and press it onto the
nished oor.
DANGER: Risk of electric shock. Disconnect power before servicing.
DANGER: Risk of electric shock. For plug-in installations/wall-mounted electrical supply: connect only
to a properly-grounded, grounding-type receptacle protected by a Ground-Fault Circuit-Interrupter
(GFCI). Do not remove the grounding pin or use a grounding adapter.
DENGER: Risk of electric shock. For hardwire installations/through-oor electrical supply:
Connect only to a properly-grounded, dedicated 220~240V, 10A, 50Hz/60Hz circuit protected by a Class A
Ground-Fault Circuit-Interrupter (GFCI) or Earth-Leakage Circuit-Breaker (ELCB).
NOTE: This product is designed for installation with the electrical supply aached to the wall. Both types
are illustrated. Refer to the dimensional information for your chosen installation. Follow the dimensional
information exactly when installing the hardwire electrical supply.
Silicone
Installation (cont.)

1226975-X2-B 10 Kohler Co.
G. Remove side plates
Unscrew the nut cap on the tee joint.
H. Fix Wax Ring
Place the wax ring on the waste outlet.
Side Plate
Nut Cap
Installation (cont.)

Kohler Co. 11 1226975-X2-B
I. Install the Vitreous Shell
Carefully pick up the vitreous shell.
Make sure the trap way sits fully in the outlet gasket. If the vitreous shell does not sit evenly on the oor, then
the trap way will not be properly aligned.
Make all adjustments gently reference the toilet side mark symbol and the drain hole centerline on the nished
oor until the trap way is properly seated. Use nut and washer to fasten the bolts and x up the toilet.
WARNING: Risk of personal injury. The vitreous shell weighs 35 kg. Use proper lifting technique when
handling the vitreous shell.
CAUTION: Risk of product damage. Do not set the shell down hard. Gently lift and move the shell if it
is not placed correctly. If handled harshly, the shell may chip or break.
CAUTION: Risk of product damage. Do not move the toilet after the trap way is properly seated to
avoid the wax seal invalidated, Change the wax ring if it is needed to move.
Nut
J. Install Tee Valve.
IMPORTANT!
1. Dimensions in the pictures are for reference only.
2. Install Decorative Cover.
Unit: mm
Installation (cont.)
150 ± 10
250 ± 10
Close by rotating the handle clockwise and
open counterclockwise.
Handle of Tee Valve
Tee Valve
Decorative Cover

1226975-X2-B 12 Kohler Co.
K. Connect the Water
IMPORTANT! The supplied hose must be used for this installation.
1. Connect the water outlet.
2. Open the shut-o valve.
NOTE: Please do not reuse the old hose.
L. Test manual ush button.
Press down left buon for about 2 seconds, then press down right buon for about 3 seconds and again press
down left buon for about 6 seconds to complete water ushing.
Left Button
Right Button
Installation (cont.)

Kohler Co. 13 1226975-X2-B
Installation of Remote Controller Holder
M. Caulk along the toilet bottom (except for the side plates). Finish installation by xing the
side plates.
Projecting portion
of silicone are cut
off (two sides).
Coated with silicone.
Side Plate (Two Sides)
NOTE: If the installation wall is made of special material (such as wood board, density board and etc.), suitable
xing methods shall be adopted.
NOTE: The place to install the remote control where it will not easily be splashed by water.
¨Choose a mounting location for the remote holder that is easily accessible while siing on the seat.
¨Drill two holes with depth larger than 45 mm on the wall by drill with a diameter of 6 mm in accordance with
the position of screw holes on the remote control holder. Install the expansion tube into the holes.
¨Place the installation holder on the xing hole.
¨Peel o the release paper of the double-sided tape at the back of holder.
¨Fix the holder with screws and install it.
¨Install the screw so it is covered.
¨Place the remote controller on the holder.
Installation (cont.)

1226975-X2-B 14 Kohler Co.
Preparations Fore The First Use
Conrm that the baery has been correctly installed in the "remote controller".
Conrm that there is no obstacle in front of the product.
Wait for the host to nish the self-checking. During that time, it is normal to hear rotating sound of the motor
and bicker. Self-checking completed when the light ashes.
When it is used for the rst time, product will be in default stage:
Front Wash: Rear Wash: Seat Temperature: mid
¨Water Temperature: mid ¨Water Temperature: mid Wind Temperature: mid
¨Pressure: mid ¨Pressure: mid Night Light: On
¨Position: Level 3 ¨Position: Level 3 Energy Saving Mode: 6H
Function of Auto Lid-Turning: On
Function of Auto Flushing: On
Installation of Remote Controller Holder (cont.)
Public Anti-theft Installation
Remove the
Silicone Plug
Remove the
Silicone Plug
Remote Control
Dock
Seat Gasket
Installation Steps:
Expansion
Pipe
Expansion Screw
Hook Plate
Screw
Hook

Kohler Co. 15 1226975-X2-B
Troubleshooting
This guide of trouble shooting is for general help only. Authorized representatives or qualied electricians of
Kohler Company shall be able to solve all electrical failures. If you want to know about the service of warranty,
please contact Call Center 0 2204 6222.
Troubles Possible reasons Suggestions and measures
1. Toilet not work. A. Power failure.
B. Plug not connected or no power to socket.
C. The leakage circuit breaker at cable plug
is not reset.
D. Product is at standby mode.
A. Wait until the power is restored.
B. Insert the plug or detect the power socket.
C. Press Reset button on the plug.
D. Press Power button at the side. Wake up
the product.
2. Toiletnotushing. A. Water failure.
B. Tee valve for water supply is closed.
C. Power failure.
D. Product is at standby mode.
E. Wash mode is in progress.
F.Auto-ushingisdeactivated.
A. Wait until the water supply is restored.
B. Open the tee valve for water supply.
C. Wait until the power is restored or
check"manualushing"tohavemanual
ushingorbyuseofbasin.
D. Press Power button at the side. Wake up
the product.
E. Do it after the operation at wash mode
is completed.
F. Refer to "Guide on setting of remote
controller".
3. Toilet is not clean after
ushing.
A. Filter screen is blocked.
B.Waterpressureisinsufcient.
A.Referto"Washingoflterscreen".
B. Check if all tee valves are opened. If not,
please open.
C. Check if the inlet hoses are bent over
much. In that case, adjust the hoses.
4. Wash mode is
abnormal.
A. Water failure.
B. Tee valve for water supply is closed or
not opened completely.
C. Product is at standby mode.
D. Not yet seated or current sitting posture
unable to be sensed by the seat.
E. Filter screen is blocked.
F.Waterpressureisinsufcient.
G.Thetoiletisintheprocessofushing.
A. Wait until the water supply is restored.
B. Fully open the tee valve for water supply.
C. Press Power button at the side. Wake up
the product.
D. Please be seated or adjust sitting posture.
E.Referto"Washingoflterscreen".
F. Check if the inlet hoses are bent over
much. In that case, adjust the hoses.
G.Flushagainafterthisushinginprogress.
5. Flushing mode stops in
the process of operation.
A. Flushing mode stops automatically after
continuousushingfor5minutes.
B. The seat is unable to sense human body.
A. If necessary, press again the Flushing
button.
B. Change your sitting posture or be seated
again.
6. The wash mode may
work even when people
are not seated.
A. The seat is covered by foreign matters or
the seat is wet.
A. Remove the foreign matters or dry the
seat.
7.
Dryer fan stops in the
process of operation
A. The dryer fan stops automatically after
continuous usage for 4 minutes.
B. The seat is unable to sense human body.
A. If necessary, press again the Dryer button.
B. Change your sitting posture or be seated
again.

1226975-X2-B 16 Kohler Co.
Troubles Possible reasons Suggestions and measures
8. Deodorization fan not
work.
A. The seat is unable to sense human body.
B. Stop button is pressed by mistake during
operation.
C. Auto deodorization function is deactivated.
A. Change your sitting posture or be seated
again.
B. If necessary, please leave the seat for
2S and the sit down again.
C. Refer to "Guide on setting of remote con-
troller".
9. Cover fails to be closed/
opened.
A.
The seat is covered by foreign matters or
the seat is wet.
B. The toilet cover is interfered by people at the
open/close process before.
A. Remove the foreign matters or dry the
seat.
B.
Use the remote controller to open/close
the toilet cover or do it manually until
it works normally. The switch of cover
shall not be stopped during the open/
close process.
10. Cover unable to be
opened/closed
automatically.
A. Users are not seated yet or leave the
sensing area.
B.
The function of "automatic cover-turning" of
remote controller is deactivated.
C.Thetoiletisintheprocessofushing.
A. Please be seated yet or leave the sensing
area.
B. Refer to "Guide on setting of remote
controller".
C.Waituntiltheushingoftoiletiscompleted.
11. Night light out of work. A. The night function is turned off.
B. The indoor light is too bright.
A.
Check the section of night light at
"auxiliary keyboard function" to activate the
night function.
B. The night function is turned off.
12. UV sterilization function
does not work.
A. Human body is sensed by seat.
B.
The seat is covered by foreign matters or
the seat is wet.
A. Please activate the function of UV
sterilization again after leaving.
B. Remove the foreign matters or dry the
seat.
13. Remote failure fails to
display.
A. Out of battery.
B.
Battery polarities are mounted reversely.
C. The remote controller is not woken up.
A. Replace by new battery.
B. Reinstall properly.
C. Touch the screen of remote controller
Sit near to the toilet or be seated Press
Wake up key of remote controller.
14. Remote controller fails
to control the toilet.
A. Lower battery.
B. The remote controller is too far from the
toilet.
C. The toilet is not yet powered on.
D. The toilet itself is at standby mode.
E. The toilet is not connected to the remote
controller.
A. Replace battery by referring to the
section of "Usage and replacement of
battery for remote controller".
B. Check the section of "Communication
between remote controller and this
machine", and get close to the toilet.
C. Power on the toilet body.
D. Press Power button at the side. Wake up
the product.
E. Check the section of "Communication
between remote controller and this
machine", and connect the toilet and the
remote controller.

Kohler Co. 17 1226975-X2-B
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 


  

 
 
  

 
 

 

  
 
  

   

  

 

1226975-X2-B 18 Kohler Co.

¨    
  

¨  

¨    

¨   

¨ 
¨ 

¨ 
¨ 
¨ 
 
   
   




:
• 
•


   


Kohler Co. 19 1226975-X2-B
วาล์วนํ�าสามทาง
สายนํ�าดี

    


มาตรวัด
ความดัน
วาล์วปิด-เปิด
สายยาง
สายนํ�าดี
วาล์วนํ�าสามทาง

     


1226975-X2-B 20 Kohler Co.
  
 
¨ 
¨ 
¨  
¨ 

  
     

  
   
  ~
    
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


160
900
438
533
150
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58
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305
670
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