KOHLER K-6284 Installation Manual

Installation and Care Guide

In-Wall Tank and Carriage

K-6284

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

1142998-2-D

Tools and Materials

Assorted Drill Bits

2" Hole Bit

5/8"
(16 mm)

1/4 turn, 1/2" NPT
Supply Shut-off with 5/8"
or Shorter Handle

Silicone Plumbers
Grease

1/2"

1/4" x 2" (51 mm)
Min Lag Bolts

Plus:

• Conventional
woodworking
tools and materials

• Cement board,
24" (610 mm) x
24" (610 mm) min

Optional:

• Assorted electrical
tools

Before You Begin

IMPORTANT! 2x6 framing is required for this product. 2x4 framing
will not be deep enough to accommodate the carriage assembly.

IMPORTANT! In areas with freezing temperatures, install on an
interior wall. If installed on an exterior wall, provide adequate
insulation to prevent the possibility of freezing.

NOTE: This device is not intended to be used as a retrofit device
for 1.28 gpf (4.8 lpf) water closets.

NOTE: Performance may vary. This product was not tested with
toilets not listed as compatible.

Only bowl numbers K-6299 and K-6300 are compatible with the
carriage.

During installation, make sure the inlet tube connections and
gaskets remain fully engaged to ensure a watertight seal.

Carefully inspect the carriage and tank for damage.
Observe all local plumbing and building codes.

For Installations with a Bidet Seat

1142998-2-D 2 Kohler Co.

CAUTION: Risk of personal injury. If the optional electrical
outlet will be installed, it must be connected to a GFCI or
RCD protected circuit.

Before You Begin (cont.)

If the optional electrical outlet will be installed, observe all local
electrical codes.

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2x6 Studs

Ø 3-9/16"

19"

19"

19"
(483 mm)

(483 mm)

(483 mm)

Waste
Outlet
Pipe

9-1/2" (483 mm)

(90 mm)

3-3/4" (95 mm)

3-3/4" (95 mm)

1. Install the Framing

IMPORTANT! This installation requires 2x6 studs. Note the
center-to-center stud dimension is not standard.

IMPORTANT! Note the 3-3/4″ (95 mm) dimension from the front
edge of the framing to the center of the outlet pipe. This dimension
is critical for the installation.

NOTE: Refer to the specification sheet for more details and
dimensions for roughing-in.

NOTE: The waste outlet pipe may need to be relocated for this
installation.

NOTE: A PVC elbow is supplied with this product. A cast iron
elbow may be required by codes in some areas. The height of the
toilet drain pipe may need to be adjusted if the cast iron elbow is
used.

NOTE: Double studs must be used on either side of the stud
pocket.

Construct the stud pocket using the dimensions shown.

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Install the Framing (cont.)

The center of the waste outlet should be 3-3/4″ (95 mm) from the
front edge of the framing.

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Front View Back View

Hex
Wrench

Electrical
Box

Screws

Leg

Nut

2. Prepare the Carriage

Raise the Carriage

NOTE: Raise the carriage for ease of installation. It will be lowered
again in a later step.

Position the carriage face down on the floor.
Loosen the nuts securing the legs to the carriage using the

supplied hex wrench.
Raise the carriage 8″ (203 mm) - 10″ (254 mm) high, enough to

allow room for a wrench and lag bolts over the feet.
Tighten the nuts securing the legs to the carriage.

Install the Electrical Box - Bidet Installations

NOTE: The electrical box is required when the K-4744 bidet seat
will be paired with the bowl. Skip this step for standard
installations.

Connect the electrical box to the carriage at the location shown.

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Unlock

Lock

Support Strap

Support Strap

Elbow

Elbow

3. Position the Elbow

Position the carriage upright in a secure position.
Gently turn the upper screw (labeled ″Open″) counterclockwise

while applying slight downward pressure on the support strap
until the strap comes free of the locking mechanism.

Move the end of the elbow into place from the front of the
carriage. Rotate the elbow downward as it moves through the
carriage.

With the flared end of the waste pipe against the support strap,
insert the support strap upward into the locking mechanism as
far as possible.

Gently turn the lower locking screw (labeled ″Lock″) clockwise
until you hear a click to secure the waste pipe.

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Front View

Threaded
Rod

Leg

Lag Bolt

4. Install the Carriage

Move the carriage into place in the stud pocket.
Temporarily secure the carriage in place so it will not fall.
Align the carriage flush with the front edge of the studs. The

front of the carriage should be flush with the front edge of the
studs or set back slightly for finished wall installation.

Check the front of the carriage for plumb.
Mark the hole location for each foot.
Drill a pilot hole (remove the carriage if needed) to reduce the

risk of the lag bolt causing the stud to split or crack.
Secure the feet of the carriage to the studs using 2″ (51 mm)

(minimum) lag bolts (not supplied).
Install the threaded rods several turns into the carriage.

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Front View

Mark the

2-5/8"
(67 mm)

carriage.

Nut
2-5/8"
(67 mm)

Leg

Finished

Floor

5. Adjust the Carriage Height

IMPORTANT! If the carriage is not correctly adjusted, the bowl rim
height may not be compliant with applicable codes. The finished
wall would need to be removed to make the correct adjustments if
the bowl height is not correct.

A

NOTE: For the K-6299 and K-6300 bowls, the minimum rim height
is 15-5/8″ (391 mm) when the finished floor is even with the bottom
of the carriage legs. The maximum rim height is 26″ (660 mm) when
the legs are fully raised. The carriage can be adjusted up to 12″ (305
mm), with 6″ (152 mm) or less of adjustment sufficient in most
installations.

Make a mark 2-5/8″ (67 mm) above the top of the threaded rod.
Measure from the top of the finished floor to the mark (A) to

determine the rim height of the bowl.
Loosen the nuts securing the legs to the carriage.

As the carriage is lowered, make sure the elbow aligns with the
toilet drain pipe.

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Adjust the Carriage Height (cont.)

If applicable, confirm the gasket on the elbow stays correctly
positioned as it enters the toilet drain pipe.

Adjust the carriage until the desired height is reached. Securely
tighten the nuts using the provided hex wrench to secure the legs
in place.

If a cast iron elbow is required, make the connections following all
applicable codes.

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2x4

1-5/8"
(41 mm)

Screws

6" (152 mm)

Inlet

Ø 2"
(51 mm)

6. Secure the Top of the Carriage

Drill pilot holes at the lag bolt locations.
Install two 6″ (152 mm) long support 2x4’s, located at the top of

the carriage, aligned with the mounting holes, 1-5/8″ (41 mm) in
from the front edge of the studs.

Secure the carriage to the support studs using 2″ (51 mm) long
(minimum) lag bolts (not supplied), one on each side.

At the location of the inlet, drill a 2″ (51 mm) hole.

Lag Bolt

Connect the Power - Bidet Seat Installations

NOTE: This step is only needed if the electrical box was installed in
the ″Prepare the Carriage″ section.

Connect the power following all applicable codes.

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WARNING: Risk of personal injury. Disconnect the power
before connecting the wires.
CAUTION: Risk of personal injury. The electrical outlet
must be connected to a GFCI or RCD protected circuit or an
accessible Ground-Fault Circuit-Interrupter (GFCI) or
Residual-Current Device (RCD) must be installed.

5/8"
(16 mm)

3-1/2" (89 mm)
Maximum Clearance
from the Front of
the Finished Wall

Bidet Water Supply (Optional)

7. Install the Water Supply

All Installations

IMPORTANT! Optional bidet water supply for the K-6300 Bowl is
shown. Do not install a second water supply unless a hidden bidet
seat will be installed.

Install the water supply pipes, following all local codes.
Connect the waste pipe following all applicable local codes.

Installations With a Bidet Seat

Optional: Install the bidet water supply and a quarter turn, 1/2″
NPT supply shut-off.

IMPORTANT! The bidet supply shut-off must extend 3″ (76 mm)
minimum to 4″ (102 mm) maximum from the finished wall to allow
access to the handle. The supply shut-off handle should be no
higher than 5/8″ (16 mm) from the center of the water supply.

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Inlet Hole

Flush Shield

Screws

Outlet Hole

Plaster Guard

8. Install the Plaster Guards

Insert a plaster guard into the inlet hole in the carriage.
Install a plaster guard into the outlet hole in the carriage.
Install the flush shield in the flush valve opening using the four

supplied screws.
If it is not already installed, install the flat panel in the flush valve

opening.

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Finished Wall

10-1/2"
(267 mm)

10"
(254 mm)

8" (203 mm)

Cement Board,
24" (610 mm) x
24" (610 mm) Min

9. Install the Finished Wall

Install a minimum 24″ (610 mm) by 24″ (610 mm) piece of cement
board with a 10-1/2″ (267 mm) by 10″ (254 mm) hole, installed
directly behind the bowl and centered over the waste outlet
opening.

Install the finished wall.

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Utility Knife

Finished Wall

Flush Shield

10. Trim the Flush Shield

Use a utility knife to carefully trim the flush shield even with the
finished wall.

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Lock

Lock

Lift Rod
Assembly

Open

Finished Wall

Open

Faceplate

11. Install the Faceplate

Turn the locking tabs to the ″Open″ position.
Align the lift rod assembly with the valve openings and install it.
Turn the locking tabs to the ″Lock″ position.
Position the faceplate over the lift rod assembly and press into

place.

Care and Cleaning

WARNING: Risk of property or product damage. Do not
use in-tank cleaners in your toilet. Products containing
chlorine (calcium hypochlorite) can seriously damage fittings
in the tank. This damage can cause leakage and property
damage.

Kohler Co. shall not be responsible or liable for any tank fitting
damage caused by the use of cleaners containing chlorine (calcium
hypochlorite).

For best results, keep the following in mind when caring for your
KOHLER product:

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Care and Cleaning (cont.)

•

Always test your cleaning solution on an inconspicuous area
before applying to the entire surface.

•

Wipe surfaces clean and rinse completely with water immediately
after applying cleaner. Rinse and dry any overspray that lands on
nearby surfaces.

•

Do not allow cleaners to soak on surfaces.

•

Use a soft, dampened sponge or cloth. Never use an abrasive
material such as a brush or scouring pad to clean surfaces.

•

For Artist Edition Toilets: Treat your decorative product just as
you would treat your fine china. DO NOT use bristle brushes or
abrasive-backed sponges. They will scratch decorative surfaces.
Use only warm water to clean. Dry with a cotton cloth or soft
sponge.

For detailed cleaning information and products to consider, visit
www.kohler.com/clean. To order Care & Cleaning information, call
1-800-456-4537.

Troubleshooting

For service parts information, visit www.kohler.com/serviceparts.

Symptoms Cause Recommended Action

1. Poor flush. A. Water level is

too low.

B. Improper waste

line venting.

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A. The water line should

be about 8″ (203 mm)
above the bottom of
the tank. Raise the
water level in the tank
to the marked
waterline by turning
the white knob
clockwise until the
water level reaches the
waterline marked in
the tank.

B. Install venting to code.

Troubleshooting (cont.)

Symptoms Cause Recommended Action

2. Running fill

valve.

A. Water level is

too high.

A. Lower the water level

in the tank by turning
the knob at the top of
the threaded rod
counterclockwise until
the fill valve shuts off
when the water level
reaches the marked
waterline in the tank.

B. Flush valve

gasket or flush
valve are

B. Replace gasket or

flush valve as
necessary.

damaged.

C. Flush valve is

sticking open.

C. Check flush valve and

actuating mechanisms
for free movement.
Push button actuators
should raise levers
then spring back
without force. Replace
components as
necessary.

3. Leaks from

behind the bowl.

A. Gaskets not

positioned
correctly.

A. Remove the bowl and

inspect all the gaskets.
Reposition the gaskets
if needed. Lubricate
the gaskets so they
slide in or over the
mating part they seal.
Reinstall the bowl,
making sure the
gaskets stay in the
correct positions.

4. Carriage and

bowl flex when
used.

A. Insufficient

support for
frame.

A. Add additional

support members, and
mount the frame with
1/4″ or larger lag
screws.

5. No water flow. A. Supply stop

located in tank
is closed.

A. Open the supply stop

(located on the left
side).

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Troubleshooting (cont.)

Symptoms Cause Recommended Action

B. There is an

obstruction in
the water line.

B. Close the external

supply stop,
disconnect the braided
hose where it attaches
to the fill valve. Turn
on the water supply
and check the flow
through the hose.
Continue to
investigate water path
for obstructions. Clear
any blockages.

Warranty

ONE-YEAR LIMITED WARRANTY

KOHLER plumbing products are warranted to be free of defects in
material and workmanship for one year from date of installation.

Kohler Co. will, at its election, repair, replace or make appropriate
adjustment where Kohler Co. inspection discloses any such defects
occurring in normal usage within one (1) year after installation. Kohler
Co. is not responsible for removal or installation costs. Use of in-tank

toilet cleaners will void the warranty.

To obtain warranty service contact Kohler Co. either through your
Dealer, Plumbing Contractor, Home Center or E-tailer, or by writing
Kohler Co., Attn.: Customer Care Center, 444 Highland Drive, Kohler,
WI 53044, USA, or by calling 1-800-4-KOHLER (1-800-456-4537) from
within the USA and Canada, and 001-800-456-4537 from within Mexico,
or visit www.kohler.com within the USA, www.ca.kohler.com from
within Canada, or www.mx.kohler.com in Mexico.

IMPLIED WARRANTIES INCLUDING THAT OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE EXPRESSLY LIMITED IN DURATION TO THE
DURATION OF THIS WARRANTY. KOHLER CO. AND/OR
SELLER DISCLAIM ANY LIABILITY FOR SPECIAL, INCIDENTAL
OR CONSEQUENTIAL DAMAGES. Some states/provinces do not

allow limitations on how long an implied warranty lasts, or the
exclusion or limitation of special, incidental or consequential damages,
so these limitations and exclusions may not apply to you. This
warranty gives you specific legal rights. You may also have other
rights which vary from state/province to state/province.

Kohler Co. 19 1142998-2-D

Warranty (cont.)

This is Kohler Co.’s exclusive written warranty.

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