Kohler K-18829 Assembly instructions

Installation and Care Guide
In-Wall Tank and Carriage
Mproduct numbers are for Mexico (i.e. K-12345M)
Los números de productos seguidos de
Mcorresponden a México (Ej.
K-12345M)
Français, page “Français-1”
Español, página “Español-1”
K-18829
1246750-2-B

Tools and Materials
Before You Begin
IMPORTANT! 2x4 framing is required for this product.
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: If 2x6 framing is used, the drain outlet may be angled 45
degrees in either direction.
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 tested with toilets
that are 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
CAUTION: Risk of personal injury. If the optional electrical
outlet will be installed, it must be connected to a GFCI or
RCD protected circuit.
Plus:
• Conventional woodworking
tools and materials
• 1/4" x 2" (51 mm) Min
Concrete Expansion Bolts
(for concrete subflooring)
Optional:
• Assorted electrical tools
5/8"
(16 mm)
1/2"
1/4 turn, 1/2" NPT
Supply Shut-off with
5/8" or Shorter Handle
1/4" x 2" (51 mm) Min
Lag Bolts
Silicone Plumbers
Grease
Assorted Drill Bits
1246750-2-B 2 Kohler Co.

Before You Begin (cont.)
If the optional electrical outlet will be installed, observe all local
electrical codes.
Kohler Co. 3 1246750-2-B

1. Install the Framing
IMPORTANT! Note the 1-3/4″(44 mm) or 3-1/4″(83 mm)
dimension from the front edge of the framing to the center of the
outlet pipe depending on your installation. 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.
1-3/4" (44 mm) [2x4 Studs]
3-1/4" (83 mm) [2x6 Studs]
2x4 Studs or
2x6 Studs
8" (203 mm) [Plywood Subfloor]
9-1/8" (232 mm) [Concrete Subfloor]
Waste
Outlet
Pipe
23-1/4"
(591 mm)
PVC
Elbow
1-3/4" (44 mm) [2x4 Studs]
3-1/4" (83 mm) [2x6 Studs]
1246750-2-B 4 Kohler Co.

Install the Framing (cont.)
The center of the waste outlet should be 1-3/4″(44 mm) or 3-1/4″
(83 mm) from the front edge of the framing.
Kohler Co. 5 1246750-2-B

2. Prepare the Carriage
Install the Drain Clamp
Unpack and inspect the carriage.
NOTE: If using 2x6 studs, install the mounting frame reversed into
the back notches.
Install the mounting frame into the front notches on the bottom
of the carriage.
Insert the PVC elbow into the mounting frame.
Secure the elbow in place with the drain clamp. Push the clamp
into the frame until it locks into place.
Install the Electrical Box - Bidet Installations
NOTE: The 1201721 electrical box kit 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.
Electrical
Box
Back View
Mounting
Frame
PVC
Elbow
Front View
Drain
Clamp
1246750-2-B 6 Kohler Co.

3. 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.
NOTE: For the K-6299 and K-6300 bowls, the minimum rim height
is 15″(381 mm) when the finished floor is even with the bottom of
the carriage legs. The maximum rim height is 23″(584 mm) when
the legs are fully raised. The carriage can be adjusted up to 8″(203
mm), with 6″(152 mm) or less of adjustment sufficient in most
installations.
Move the carriage into place in the stud pocket.
Temporarily secure the carriage in place so it will not fall.
Install the threaded rods several turns into the carriage.
Make a mark on the carriage 2-5/8″(67 mm) above the top of the
threaded rod.
Measure from the finished floor to the mark (A) to determine the
rim height of the bowl.
Leg
Nut
A
Finished
Floor
Mark the carriage.
2-5/8"
(67 mm)
Threaded
Rods
Kohler Co. 7 1246750-2-B

Adjust the Carriage Height (cont.)
Loosen the nuts securing the legs to the carriage.
NOTE: As the carriage is lowered, make sure the elbow aligns with
the toilet drain pipe.
NOTE: 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 a wrench to secure the legs in place.
NOTE: If a cast iron elbow is required, make the connections
following all applicable codes.
1246750-2-B 8 Kohler Co.

4. Install the Carriage
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 locations for the six lag bolts, one for each foot and
two on either side of the carriage.
Drill pilot holes (remove the carriage if needed) to reduce the risk
of the lag bolts causing the studs to split or crack.
NOTE: If the carriage is installed onto a concrete sub-floor use
concrete expansion bolts (not supplied) when securing the feet of
the carriage.
Secure the carriage to the support studs using 2″(51 mm) long
(minimum) lag bolts (not supplied), one at each location.
Connect the Power - Bidet Seat Installations
WARNING: Risk of personal injury. Disconnect the power
before connecting the wires.
Lag Bolts
Kohler Co. 9 1246750-2-B

Install the Carriage (cont.)
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.
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.
1246750-2-B 10 Kohler Co.

5. Install the Water Supply
All Installations
IMPORTANT! Optional bidet water supply is shown. Do not install
a second water supply unless a bidet seat will be installed.
Install the water supply pipes, following all local codes.
Connect the waste pipe following all applicable local codes.
If using a G 1/2 connection, remove the 1/2″NTP adapter and
discard.
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.
Bidet Water Supply
(Optional)
5/8"
(16 mm)
Max
4" (102 mm)
Maximum Clearance
from the Front of
the Finished Wall
1/2" NTP
Adapter
Kohler Co. 11 1246750-2-B

6. 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 by snapping it
into place.
Inlet
Hole
Plaster Guard
Outlet
Hole
Flush Shield
1246750-2-B 12 Kohler Co.

7. Install the Finished Wall
NOTE: It is recommended to use cement board or tile backer board
for the wallboard backing. Gypsum board can also be used but it
may affect the toilet loading strength.
NOTE: The wall thickness should not exceed 2-3/4″(70 mm).
Install the finished wall.
Finished Wall
8" (203 mm)
9-1/4"
(235 mm)
10-1/2" (267 mm)
Front View
Kohler Co. 13 1246750-2-B

8. Trim the Flush Shield
Use a utility knife to carefully trim the flush shield even with the
finished wall.
Utility Knife
Finished Wall
Flush Shield
1246750-2-B 14 Kohler Co.

9. Remove the Service Cover
Remove and discard the service cover by pressing down on the
tabs and pulling forward.
Service Cover
Tabs
Flush Valve Opening
Kohler Co. 15 1246750-2-B

10. Install the Actuator
Thread the push rods into the actuator assembly 1/2″(13 mm)
behind the finished wall.
If needed, trim the threaded end of the push rods.
Secure the push rods in place with the push rod nuts.
K-4177, K-8857 and K-5413
Thread the push rods into the actuator assembly flush with the
finished wall.
If needed, trim the threaded end of the push rods.
Secure the push rods in place with the push rod nuts.
1/2"
(13 mm)
Min
Push Rod
Nuts
Push Rods
Finished
Wall
Side View
1246750-2-B 16 Kohler Co.

11. Install the Faceplate
Install the locking pins into the mounting frame.
Turn the locking pins to the ″Open″position.
Align the mounting frame with the tank mounting opening and
install the frame.
If needed, trim the locking pins.
Turn the locking pins 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
Finished
Wall
Mounting Frame
Faceplate
Open Position
Lock Position
Kohler Co. 17 1246750-2-B

Care and Cleaning (cont.)
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:
•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. 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. Improper waste
line venting. B. Install venting to code.
1246750-2-B 18 Kohler Co.

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
damaged.
B. Replace gasket or
flush valve as
necessary.
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 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).
Kohler Co. 19 1246750-2-B

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.
1246750-2-B 20 Kohler Co.