Kohler K-4177 User manual

1430967-2-B
Installation Instructions
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In-Wall Tank and Carriage

Thank You for Choosing KOHLER
Need help? Contact our Customer Care Center.
USA/Canada: 1-800-4KOHLER (1-800-456-4537)
Mexico: 001-800-456-4537
For service parts information, visit kohler.com/serviceparts.
For care and cleaning information, visit kohler.com/clean.
Warranty
This product is covered under the KOHLER® Toilets and Seats Limited Warranty, found at kohler.com/warranty. For a
hardcopy of warranty terms, contact the Customer Care Center.
Tools and Materials
Assorted Drill Bits Silicone Plumbers Grease
Plus:
• Woodworking Tools and Materials
• 3/8" x 2" (51 mm) Min Lag Bolts
• 3/8" x 2" (51 mm) Min Concrete Expansion Bolts (for concrete subooring)
• 1/4 Turn, 1/2" NPT Supply Shut-o with 7/8" or Shorter Handle (BrassCraft® G23341X C1 or equivalent)
• Assorted Electrical Tools (Optional)
1430967-2-B2 Kohler Co.

Before You Begin
WARNING: Risk of property or product damage. Do not use in-tank cleaners. Products containing chlorine
(calcium hypochlorite) can damage ings in the tank. This can cause leakage and property damage.
IMPORTANT! Minimum 2x4 framing or larger is required for this installation.
IMPORTANT! The water temperature in the tank must remain between 33°F (0.5°C) and 80°F (26.6°C) to avoid freezing
and condensation. If installing on an exterior wall, adequate insulation must be used to ensure that the temperature stays
in this range.
NOTE: If 2x6 framing is used, angle the waste outlet 45 degrees in either direction.
NOTE: Do not use this product as a retrot device for 1.28 gpf (4.8 lpf) water closets.
NOTE: Kohler Co. successfully tested this product for compatibility with KOHLER bowls K-6918, K-6299, and K-6300.
Performance may vary if this product is used with an incompatible bowl.
NOTE: The 1201721 electrical box kit is required when pairing the K-4744 cleansing seat with the bowl.
Unpack and inspect the carrier and tank for damage.
During installation, make sure that the inlet tube connections and gaskets remain fully engaged to ensure a watertight
seal.
Follow all local plumbing and building codes.
For Installations with a Cleansing Seat
CAUTION: Risk of personal injury. Connect the toilet electrical supply to a circuit protected by a dedicated
Ground-Fault Circuit-Interrupter (GFCI) or Residual Current Device (RCD).
Follow all local electrical codes.
Waste Outlet Pipe Information
4" PVC
IMPORTANT! Make sure that the height of the waste outlet pipe is sucient so the rubber ribs on the adapter will be
fully inserted into the waste outlet pipe.
The 4" PVC waste outlet pipe is wider than the stud pocket in a 2x4 installation. This requires carving out the wall
material on both sides of the installation wall to t the waste pipe.
The center of a 4" PVC waste outlet pipe should follow the guidelines provided in the “Install Framing and Waste Outlet”
section.
3" PVC
A PVC or exible coupler may be wider than the stud pocket in a 2x4 installation. This requires carving out the wall
material on both sides of the installation wall to it the waste pipe.
The center of a 3" PVC waste outlet pipe should follow the guidelines provided in the “Install Framing and Waste Outlet”
section.
Kohler Co. 3 1430967-2-B

Cast Iron
A cast iron waste pipe will not be centered inside 2x4 framing, and will protrude beyond the back of the stud pocket. Use
2x6 framing or build a chase behind 2x4 framing for cast iron waste pipes.
The center of a KOHLER K-7208 cast iron waste pipe should follow the guidelines provided in the “Install Framing and
Waste Outlet” section.
1430967-2-B4 Kohler Co.

1. Install Framing and Waste Outlet
2x4 or 2x6
23-1/4"
(591 mm)
PVC
Elbow
PVC Waste Outlet
1-3/4" (44 mm) [2x4 Studs]
3-1/4" (83 mm) [2x6 Studs]
Cast Iron Waste Outlet
2-7/8" (73 mm) [2x6 Studs]
Waste
Outlet Pipe
IMPORTANT! The waste outlet pipe dimension from the front edge of the framing to the outlet pipe center is critical to
this installation. Refer to the illustration above, and see the waste pipe installation options in “Before You Begin” for more
details.
NOTE: Refer to the product specication sheet for more details and for roughing-in dimensions.
NOTE: You may need to relocate the waste outlet pipe for this installation.
NOTE: A PVC elbow is supplied with this product. A cast iron elbow may be required by code in some areas. The height
of the toilet waste pipe may need to be adjusted if a cast iron elbow is used.
NOTE: Use double studs on either side of the stud pocket.
NOTE: Follow all applicable codes in your area.
Construct the stud pocket according to the dimensions shown.
The waste outlet centerline location will vary depending upon the waste outlet pipe option chosen. The centerline will be:
1-3/4" (44 mm) for 2x4 framing with a PVC waste outlet
3-1/4" (83 mm) for 2x6 framing with a PVC waste outlet
2-7/8" (73 mm) for a cast iron waste outlet measured from the front edge of the framing
4" PVC: Install the supplied rubber-ribbed adapter onto the carrier’s PVC elbow, and insert it into the 4" PVC waste
outlet pipe.
3" PVC: Couple to the PVC elbow of the carrier using a exible coupler or a cemented PVC coupler.
Cast Iron: Install a cast iron waste pipe according to established installation methods.
Kohler Co. 5 1430967-2-B
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•
•

2. Prepare the Carriage
Electrical Box
Back View
Mounting
Frame
Elbow
Front View
Drain
Clamp
All Installations
NOTE: If using 2x6 studs, install the mounting frame into the back notches.
Install the mounting frame into the front notches on the boom of the carriage.
Insert the elbow into the mounting frame.
Secure the elbow in place with the drain clamp. Press the clamp into the frame until it locks into place.
For Installations with a Cleansing Seat
NOTE: The 1201721 electrical box kit is required when pairing the K-4744 cleansing seat with the bowl.
Connect the electrical box to the carriage at the location shown.
1430967-2-B6 Kohler Co.

3. Adjust the Carriage Height
Leg
Nut
A
Finished
Floor
2-5/8"
(67 mm)
Threaded
Rods
IMPORTANT! If the carriage has not been adjusted correctly, the bowl rim height may not be compliant with applicable
codes. If the bowl height is not correct, the nished wall will need to be removed to make the required adjustments.
NOTE: The minimum rim height is 15" (381 mm) when the nished oor is even with the boom 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 sucient 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 nished oor to the mark (A) to determine the rim height of the bowl.
Loosen the nuts that secure the legs to the carriage.
NOTE: As you lower the carriage, make sure that the elbow aligns with the waste outlet pipe.
NOTE: If applicable, conrm that the gasket on the elbow stays correctly positioned as it enters the waste outlet pipe.
NOTE: If a cast iron elbow is required, make the connections following all applicable codes.
Adjust the carriage until the desired height is reached. Use a wrench to securely tighten the nuts to secure the legs in
place.
Kohler Co. 7 1430967-2-B

4. Install the Carriage
Lag Bolts
Align the front of the frame ush or no more than 1/16" (2 mm) behind the face of the studs. If the frame protrudes past
the face of the studs, the wall material can be damaged. If the front of the frame is recessed too far, the bowl will not be
fully supported and may move during use.
Verify that the front of the carriage is plumb.
Mark the hole locations for the six lag bolts, one for each foot and two on each side of the carriage.
Drill pilot holes (remove the carriage if needed) at the marked locations.
NOTE: If the carriage is installed onto a concrete suboor, use concrete expansion bolts (not supplied) when securing the
feet of the carriage.
Secure the carriage to the support studs using 3/8" x 2" (51 mm) long (minimum) lag bolts (not supplied), one at each
location.
For Installations with a Cleansing Seat
WARNING: Risk of personal injury. Disconnect the electrical power before connecting the wires.
NOTE: Only follow this step if you installed an electrical box in the “Prepare the Carrier” section.
Connect the electrical power according to applicable codes.
1430967-2-B8 Kohler Co.

5. Install the Water Supply
5/8"
(16 mm)
Max
4" (102 mm)
Maximum Clearance
from the Front of
the Finished Wall
1/2" NPT
Adapter
Cleansing Seat
Water Supply
(Optional)
All Installations
IMPORTANT! An optional cleansing seat water supply is shown. Only install a second water supply if you will install a
cleansing seat.
NOTE: The tank valve inlet uses G1/2 threads. If desired, install a 1/2" NPT adapter to the tank valve inlet.
Make sure that the rubber seal is inserted into the 1/2" NPT adapter, if used.
Install a 1/2" NPT adapter, if desired, and tighten securely.
Install and connect the water supply lines.
Connect the waste pipe to the drain elbow.
For Installations with a Cleansing Seat
IMPORTANT! The cleansing seat water supply shut-o must extend from the nished wall between 3" (76 mm)
minimum and 4" (102 mm) maximum to allow access to the handle. The water supply shut-o handle should be no higher
than 7/8" (22 mm) from the center of the water supply.
Install the cleansing seat water supply and a 1/4 turn, 1/2" NPT supply shut-o valve.
Kohler Co. 9 1430967-2-B

6. Install the Plaster Guards
Inlet Hole
Plaster Guard
Outlet
Hole
Flush Shield
Insert the plaster guards into the carrier inlet and outlet holes.
NOTICE: You will need the remaining parts after you complete the nished wall. Retain these parts.
Set the actuator frame locking pins and bowl nut, washer, and cap set inside the ush shield so they will be available
later when you open the ush shield.
Install the ush shield in the ush valve opening by snapping it into place.
1430967-2-B10 Kohler Co.