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Kohler VEIL WALL FACED - User Manual

Kohler VEIL WALL FACED
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INSTALLATION INSTRUCTIONS
INTELLIGENT TOILET
K-8423A-0
VEIL WALL FACED
• We appreciate your commitment to Kohler quality. Please take a few minutes before you begin installation to review
this manual to become familiar with tools, materials and installation methods. If you encounter any installation or
performance problems, please don't hesitate to contact us. Thanks again for choosing Kohler Co.
• Please follow instructions closely to avoid costly mistakes caused by improper installation. Cover and protect the
components and fittings at all times during installation. Flush the plumbing lines before initial use.
• All information in this manual is based upon the latest product information available at the time of publication. Kohler
Co. reserves the rights to make changes in product characteristics, packaging or availability at any time without notice.
• Before continuing, please ensure there is no existing damage to the toilet and that there is suitable space for installation
with no interference with other bathroom fixtures such as shower door openings. Before proceeding with installation,
ensure there is ample room (approx 600mm) down each side of the pan to allow for servicing.
• To prevent serious damage, do not use corrosive solutions (see back page for care and cleaning information).
Any use of non-recommended products could void the Kohler warranty.
• This manual includes important care and cleaning information - please save these instructions.
Product Functions
Advantages for the In-wall Water Tank
• Hands-free flushing
• Manual dual-flush option
• Backflow prevention
• Pre-set water inlet level & flush volume
• Suitable for either S-trap or P-trap installations
• Anti-impact, rust-proof, macromolecule water tank reduces the possibility of leakages.
• Advanced water tank system is able to adjust 4.5/3 litre water discharge. To maintain the 4-star WELS rating, switch
off the Auto-flush option.
• No influence on wall structure, superb sound-proof effectiveness.
• Easy and quick installation saves time and labour.
• Easy servicing, wall reconstruction is not required.
• Sanitary system with no residual waste.
• Super thin tank body saves installation space and is applicable for all thin mounting walls.
COMPLIANCE: Ensure installation adheres to local building code & applicable plumbing/electrical standards.
• The Kohler Veil Intelligent Toilet - Wall Faced (
K-8423A-0) is WaterMark certified according to ATS 5200.051
Technical Specification for Plumbing and Drainage Products - Bidet Douche Seats.
• Installation must comply with AS/NZS 3500.1 Plumbing and Drainage - Water Services and AS/NZS 6400 Water
Efficient Products - Rating and Labelling.
Backflow Prevention
• The supplied Dual Check Valve is WaterMark certified according to AS 2845.1 Water Supply - Backflow Prevention
Devices - Materials, Design and Performance Requirements.
• Each site must have High Hazard Backflow Prevention installed upstream of the installation.
• For domestic installations, consult with a Licensed Practitioner (Plumber) before installation.
• For commercial applications, refer to a Hydraulic Consultant before specification or installation.
WARNING: Risk of electric shock. Disconnect power before servicing.
WARNING: Risk of electric shock. Connect only to a properly-grounded, grounding-type receptacle which is
protected by a Ground-Fault Circuit-Interrupter (GFCI) or Residual Current Device (RCD)
WARNING: Risk of electric shock. This product must be grounded. Connect only to a dedicated 220~240V AC,
50/60Hz circuit protected with grounded circuit-breaker or grounded electric leak circuit breaker
WARNING: 10A power supply is required.
Kohler Co. Jan 2018 1 1345889-A02-A

Questions and Answers

  • B
    Benjamin WrightSep 10, 2025
    Why does the Kohler toilet dryer stop working during operation?
    • Z
      zgarciaSep 10, 2025
      The dryer on your Kohler toilet might stop working during operation because it auto-stops after a continuous 4 min. If needed, press the dryer button again. Or the seat does not detect any user, so adjust your sitting position and sit on again.
  • B
    brendasullivanAug 23, 2025
    How to fix Kohler toilet that does not flush completely?
    • L
      leesheilaAug 23, 2025
      If your Kohler toilet isn't flushing completely, it may be due to insufficient manual button travel; dismantle the water outlet control panel and adjust the manual flush adjustment rod.
  • B
    Bridget LaneAug 25, 2025
    Why is my Kohler toilet leaking?
    • P
      Patricia BarreraAug 25, 2025
      Your Kohler toilet might be leaking because foreign objects are blocking the water inlet valve float when water enters the tank; adjust other parts to avoid any contact with the float during the process. Also, there might be foreign objects on the water sealing piece; remove any foreign objects.
  • S
    Steven CruzAug 26, 2025
    How to adjust Kohler toilet water level if it is high or too low?
    • M
      mary62Aug 27, 2025
      If the water level in your Kohler toilet is too high or too low, the water inlet valve float might not be set properly; adjust the water level again.
  • J
    Jennifer RichardsonAug 27, 2025
    What to do if my Kohler toilet does not work?
    • N
      Nicole PowellAug 27, 2025
      If your Kohler toilet isn't working, it could be due to a power failure; in this case, wait until the power is restored. Alternatively, the product might be under protected status, so turn the power off at the switchbox and then back on. Also, ensure the toilet is turned on by checking the switch on the terminal box.
  • D
    David AlvarezAug 29, 2025
    How to fix no display on my Kohler toilet remote?
    • T
      Todd WileyAug 30, 2025
      If there's no display on your Kohler toilet remote, the battery may have run out; install a new battery. Alternatively, the battery might be installed incorrectly, so re-install it correctly. Also, the remote may not have been awakened yet; touch the remote screen, approach or sit on the toilet, or press the awaken button on the remote.
  • M
    Michael DanielsSep 18, 2025
    Why is there no water when pressing FLUSH FULL or FLUSH ECO button on my Kohler toilet?
    • J
      jamesobrienSep 18, 2025
      If there's no water when pressing the FLUSH FULL or FLUSH ECO button on your Kohler toilet, the adjusting board and screw rod installation might be wrong; re-install the screw rod. Also, the discharge valve lever and barb might not be connected and snapped in; re-install the barb on the discharge valve lever.
  • L
    lwrightSep 12, 2025
    Why does the Kohler toilet spray function start even when unseated?
    • D
      davidarnoldSep 12, 2025
      If the spray function on your Kohler toilet starts even when you're not seated, the seat might be covered by an object or be wet. Remove any object and wipe the seat.
  • R
    Ronald RogersSep 8, 2025
    What to do if my Kohler toilet is unable to open or close cover?
    • A
      Alyssa BellSep 8, 2025
      If your Kohler toilet cover isn't opening or closing, the seat sensor may not be detecting a user; remove any object or wipe the seat. Alternatively, there might have been customer interference during a previous cover swing process; use the remote or manually open/close the cover back to the normal position, and avoid blocking the switch during the swing process.
  • B
    Brooke WrightSep 5, 2025
    Why does my Kohler toilet flush function stop during operation?
    • R
      Rebecca WolfeSep 5, 2025
      The flush function on your Kohler toilet might stop during operation because it automatically stops after continuous 5 min flushing; if needed, press the flush button again. Alternatively, the seat may not be detecting a user; adjust your sitting position and sit again.

Summary

Before Installation

Compliance and Safety

Covers compliance with standards, backflow prevention, and critical safety warnings for installation.

In-Wall Tank Design and Installation

Product Specifications

Technical Data and Dimensions

Details technical specifications and provides visual dimension data for the intelligent toilet.

Installation Safety and Old Toilet Removal

Installation Safety Warnings

Important safety precautions related to electrical connections and environment during installation.

In-Wall Tank Installation

Support Feet Adjustment

Procedure for adjusting the height of the in-wall tank's support feet for proper installation.

In-Wall Tank Mounting

Frame Construction and Tightening

Steps for building a mounting frame and properly tightening its screws.

Trap Installation Methods

S-Trap Installation Details

Specific instructions for connecting the discharge elbow and placing the bung for S-trap configuration.

P-Trap Installation and Wall Finishing

P-Trap Installation

Steps for securing the waste connector for a P-trap configuration.

Bowl Installation - Piping and Panel Removal

Bowl Installation - Pipe Connections

Bowl Installation - Securing and Wiring

Final Bowl Installation and Water Level Adjustment

Water Level and Control Panel Installation

Control Panel Mounting and Wiring

Component Cleaning and Adjustment

Remote Control Docking Station Installation

Troubleshooting - Operation and Cover Issues

Toilet Operation and Cover Problems

Diagnosing and resolving issues with toilet functionality, cover operation, and night light.

Troubleshooting - Remote, Water, and Flush Issues

Remote, Water Supply, and Flush Problems

Troubleshooting guide for remote control, water supply, seat temperature, and flushing issues.

Customer Obligations and Support

Kohler VEIL WALL FACED Specifications

General IconGeneral
MaterialVitreous China
MountingWall-Mounted
Bowl ShapeElongated
Water Consumption0.8/1.28 gpf
Flush Rate1.28 gpf
Featuresconcealed trapway
Product NameVeil Wall-Hung Elongated Toilet
Rough-In Size12 inches
Color OptionsWhite, Black
ADA CompliantYes
WarrantyOne-Year Limited Warranty

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