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Kohler C3-155 - User Manual

Kohler C3-155
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C³
®
-155
Elongated bidet toilet seat
K-8298
Features
•
Hybrid heater provides continuously heated water for
consistent comfort.
•
Heated seat with five adjustable temperature settings.
•
Stainless steel wand with automatic UV-light self-sanitization.
•
LED lighting illuminates the bowl to serve as a nightlight.
•
Ergonomically designed side panel offers larger control
buttons for comfortable control.
•
Front and rear wash modes provide warm water for
cleansing.
•
Adjustable water temperature and water pressure.
•
Choose oscillating or pulsating spray.
•
Warm-air drying system with adjustable temperature settings.
•
Automatic deodorization with carbon filter for odor control.
•
Quiet-Close
™
functionality to prevent seat from slamming.
•
Grip-Tight bumpers hold seat firmly in place.
•
Quick-Release
™
functionality allows seat to be removed
easily from toilet for convenient cleaning.
•
Ergonomically designed for comfortable seating.
Material
•
Plastic construction.
Installation
•
Requires connection to toilet water supply line. All hoses and
connections are included.
Included Components
Additional Components:
Inlet water supply hose
Seat mounting bracket
T-fitting
Codes/Standards
ASME A112.4.2/CSA B45.16
UL 1431
CSA C22.2 No. 64
CSA C22.2 No. 68
KOHLER
®
Intelligent Toilet and C3
®
Cleansing Seat Three-Year Limited
Warranty
See website for detailed warranty information.
Available Colors/Finishes
Color tiles intended for reference only.
Color Code Description
0 White
96 Biscuit
1-800-4KOHLER (1-800-456-4537)
Kohler Co. reserves the right to make revisions without notice to product specifications.
For the most current Specification Sheet, go to www.kohler.com.
11-4-2021 04:36 - US/CA

Questions and Answers

  • B
    Brian RossSep 29, 2026
    how do you activate the night light on the bidet? ours was on for the first day or two and never comes on again

    Summary

    Product Features and Specifications

    Key Features

    Highlights hybrid heater, adjustable settings, self-sanitizing wand, LED lighting, ergonomic controls, wash modes, and deodorization.

    Material and Installation

    Specifies plastic construction and connection to toilet water supply line.

    Included Components

    Lists inlet water supply hose, seat mounting bracket, and T-fitting.

    Codes and Standards Compliance

    Lists ASME, CSA, and UL standards applicable to the product.

    Available Colors

    Details available color options like White and Biscuit.

    Technical and Electrical Requirements

    Required Electrical Service

    Specifies a dedicated GFCI-protected circuit, 120V, 15A, 60 Hz.

    Technical Information

    Provides details on seat shape, front type, mounting holes, and power cord length.

    Installation Notes and Precautions

    Includes water pressure requirements, location warnings, and extension cord guidelines.

    Overview

    The KOHLER C3®-155 Elongated Bidet Toilet Seat, model K-8298, is a sophisticated and feature-rich accessory designed to enhance personal hygiene and comfort in the bathroom. This bidet toilet seat integrates advanced technology with user-friendly design, offering a comprehensive cleansing experience.

    Function Description

    The primary function of the C3®-155 bidet seat is to provide a thorough and gentle cleansing experience using warm water. It features both front and rear wash modes, allowing users to select the most appropriate cleansing option for their needs. The water temperature and pressure are adjustable, giving users complete control over their personal comfort. For an enhanced cleansing sensation, the bidet offers oscillating and pulsating spray options, which provide a dynamic and invigorating wash.

    Beyond water cleansing, the C3®-155 incorporates a warm-air drying system with adjustable temperature settings. This feature eliminates the need for toilet paper, promoting a more hygienic and environmentally friendly bathroom routine. An automatic deodorization system, equipped with a carbon filter, actively works to neutralize odors, ensuring a fresh and pleasant bathroom environment after each use.

    The bidet seat is powered by a hybrid heater, which ensures a continuous supply of consistently heated water. This eliminates the discomfort of cold water washes, providing a reliably warm and soothing experience every time.

    Usage Features

    The C3®-155 is designed with user comfort and convenience in mind. The heated seat offers five adjustable temperature settings, allowing users to customize their seating experience, particularly beneficial in colder climates. An LED lighting system illuminates the toilet bowl, serving as a subtle nightlight and enhancing safety during nighttime visits without the need to turn on bright overhead lights.

    The control interface is thoughtfully designed for ease of use. An ergonomically designed side panel features larger control buttons, making it simple and intuitive to select and adjust settings such as wash mode, water temperature, water pressure, and dryer temperature.

    For added hygiene, the bidet features a stainless steel wand that undergoes automatic UV-light self-sanitization. This ensures that the wand remains clean and germ-free, providing peace of mind with every use.

    The seat itself is engineered for durability and stability. Grip-Tight bumpers securely hold the seat in place, preventing shifting or wobbling during use. The Quiet-Close™ functionality is a significant convenience feature, preventing the seat from slamming shut and ensuring a quiet and gentle closing motion.

    Maintenance Features

    Maintaining the KOHLER C3®-155 bidet seat is straightforward, thanks to several integrated features designed for easy cleaning and long-term hygiene. The Quick-Release™ functionality allows the seat to be easily detached from the toilet bowl. This makes it simple to access and clean both the seat and the toilet bowl thoroughly, ensuring a hygienic environment.

    The automatic UV-light self-sanitization of the stainless steel wand is a key maintenance feature, as it actively cleans the wand after each use, reducing the need for manual cleaning and ensuring optimal hygiene. The carbon filter in the automatic deodorization system is designed to be effective in neutralizing odors, and while it will eventually require replacement, its presence significantly reduces the frequency of other cleaning tasks related to odor control.

    The plastic construction of the bidet seat is chosen for its durability and ease of cleaning. Smooth surfaces and minimal crevices help prevent the accumulation of dirt and grime, making routine wiping down a simple task.

    Installation is also designed to be user-friendly, with all necessary hoses and connections included, simplifying the setup process and ensuring a proper connection to the toilet water supply line. This attention to detail in both usage and maintenance aspects ensures that the C3®-155 bidet seat remains a convenient, hygienic, and enjoyable addition to any bathroom.

    Kohler C3-155 Specifications

    General IconGeneral
    TypeBidet toilet seat
    Power SourceElectric
    Water Temperature ControlYes
    Heated SeatYes
    Remote ControlYes
    DeodorizerYes
    Bowl ShapeElongated
    Height19.5 inches
    Water Consumption1.28 GPF
    Flush TypeGravity flush
    Gallons Per Flush (GPF)1.28
    Rough-In Size12 inches
    Seat IncludedYes
    Height (inches)19.5
    Trapway Diameter2 inches
    InstallationFloor-mounted
    ADA CompliantNo

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