Kohler K-1234, K-1278, K-1284, K-1279, K-1283 Installation Manual

Installation Guide

Removable Apron

K-1234 K-1284

M product numbers are for Mexico (i.e. K-12345M)
Los números de productos seguidos de M corresponden a México
(Ej. K-12345M)
Français, page “Français-1”
Español, página “Español-1”

1011308-2-D

Tools and Materials

Pencil

Square

Tape
Measure

Drill/
Drill Bits

Safety
Glasses

Phillips
Screwdriver

Plus:

• Construction Adhesive

• Conventional Woodworkng Installation Tools and Materials

• Support Structure Materials (2x2s or 2x4s)

• Shimming Material (as needed)

Flat-Blade
Screwdriver

Before You Begin

Observe all local plumbing and building codes.

Unpack and inspect the apron for damage. Return the apron to the carton until you are ready to
install it.

The apron must be installed before the finished floor and wall materials are installed.
This apron system is designed to have the finished wall materials [1-1/2″ (3.8 cm) maximum

thickness] go over the apron columns. It is also designed to have the finished floor materials [2″ (5.1
cm) maximum thickness] butt up against the channel.

The apron can be used as an access to the whirlpool pump and controls, when applicable. However,
additional access may make servicing of the pump and controls easier.

NOTE: Before installing the apron, fill the bath/whirlpool with water and check the drain system for
leaks. If applicable, test the whirlpool system for leaks and proper operation.

Kohler Co. reserves the right to make revisions in the design of products without notice, as specified
in the Price Book.

1011308-2-D 2 Kohler Co.

Bath

Support Structure

Apron

Support Structure

1. Construct the Support Structure

NOTICE: An additional support structure is required. To avoid fatigue cracking to the bath/whirlpool
deck, construct a support structure under the entire front edge of the bath/whirlpool deck. Refer to the
illustration as an example.

NOTICE: Do not use the additional support structure to carry the load of the bath/whirlpool. The
bath/whirlpool must be supported by its feet.

If you have not already done so, prepare the site for the bath/whirlpool. Refer to the installation
instructions and rough-in packed with your bath/whirlpool.

NOTICE: Ensure the support structure does not interfere with the whirlpool harness (if applicable), apron
adjustment, plumbing lines, and faucet mounting.

Secure two studs vertically at the front corners of the bath/bath whirlpool and at spaced intervals
in-between.

Secure a stud horizontally across the vertical studs.
Apply construction adhesive to the horizontal stud.
Set the bath/whirlpool in place, affixing the underside of the bath/whirlpool deck to the horizontal

studs.
Complete the bath/whirlpool installation at this time. Refer to the installation instructions packed

with your bath/whirlpool.

Kohler Co. 3 1011308-2-D

Frame

Frame

Rim

Wing
Nut

Flat
Washer

Push
Frame
Up

Panel

Frame

2. Attach the Apron

Remove the panel from the frame, then set the panel aside.
Insert the bottom of the frame under the rim of the bath/whirlpool.
Center and push the frame up until it contacts the underside of the rim.
Thread one wing nut and one flat washer onto the carriage bolt.
Insert the carriage bolt assembly into the upper center hole in the back of the frame.
Loosely assemble the second flat washer and wing nut to the carriage bolt from the front of the

frame. Do not tighten at this time.

Rim

Carriage
Bolt

Support
Structure

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Secure Frame

Square

Carriage
Bolt

Secure Panel

Service

Bath/

Support
Structure

Whirlpool

Frame

Shim,
if necessary.

Subfloor

Screw

Fastener

Panel

Flat-Blade
Screwdriver

Frame

3. Complete the Installation

Secure Frame

Square the frame to the rim of the bath/whirlpool.
Secure the sides of the frame to the studs with the screws provided. Shim as necessary to fill any

gaps.
Secure the bottom of the frame to the subfloor with screws or floor anchors. Shim as necessary to fill

any gaps.
Thread the carriage bolt out until it makes contact with the bath/whirlpool. Then secure by

tightening the two wing nuts.

Panel

Frame

Secure Panel

Center the panel on the frame. Press the panel onto the frame so that each of the fasteners engage.

Finish the Installation

Install water-resistant wall material [1-1/2″ (3.8 cm) maximum thickness] to complete the finished
wall.

Install flooring material [2″ (5.1 cm) maximum thickness] to complete the finished floor.

Service

Using a flat-blade screwdriver, gently pry the bottom of the apron panel away from the apron
frame.

Kohler Co. 5 1011308-2-D