Kohler K-77780 User manual

Installation Guide
Toilet with Cleansing Seat
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K-77780
1288209-2-A

Important Information
NOTE: This product is designed for installation with the electrical and water supplies located through the
wall.
Grounding Instructions
•This product should be grounded. In the event of an electrical short circuit, grounding reduces the
risk of electric shock by providing an escape wire for the electric current. This product is equipped
with a cord having a grounding wire with a grounding plug. The plug must be plugged into an
outlet that is properly installed and grounded.
WARNING: Risk of electric shock. Improper use of the grounding plug can result in a risk of
electric shock.
•If repair or replacement of the cord or plug is necessary, do not connect the grounding wire to either
flat blade terminal. The wire with insulation having an outer surface that is green with or without
yellow stripes is the grounding wire.
•Check with a qualified electrician or service personnel if the grounding instructions are not
completely understood, or if in doubt as to whether the product is properly grounded.
•This product is factory equipped with a specific electric cord and plug to permit connection to a
proper electric circuit. Make sure that the product is connected to an outlet having the same
configuration as the plug. No adapter should be used with this product. Do not modify the plug
provided — if it will not fit the outlet, have the proper outlet installed by a qualified electrician. If
the product must be reconnected for use on a different type of electric circuit, the connection should
be made by qualified service personnel.
Tools and Materials
Before You Begin
WARNING: Risk of electric shock. Disconnect the power before servicing.
WARNING: Risk of electrical shock. Connect only to a properly-grounded, grounding-type
receptacle which is protected by a Ground-Fault Circuit-Interrupter (GFCI) or Residual Current
Device (RCD). Do not remove the grounding pin or use a grounding adapter.
CAUTION: Risk of hazardous gases. If a new toilet is not installed immediately, temporarily place
a rag in the floor flange opening.
IMPORTANT! The water supply input pipe must be a minimum of 1/2″copper pipe or 3/4″PEX tube to
provide the minimum water flow for this product to operate properly.
Masking
Tape
Pencil or Felt
Tip Marker
Supply Stop 5/16" x 2-1/4"
T-Bolts Drill and 1/4" bitCaulk Gun Caulk
Rags
Silicone Grease
or Soap Socket Wrench with 1/2" Deep Socket
Wax Seal
1288209-2-A 2 Kohler Co.

Before You Begin (cont.)
NOTICE: The Canadian Electric Code requires receptacles installed in bathrooms to be located at least
39-3/8″(1000 mm) from a bath or shower if practical, but in no case less than 19-11/16″(500 mm). If the
installation is in Canada, install this unit in accordance with the Canadian Electrical Code, Part 1.
Observe all local plumbing and building codes.
Carefully inspect the new toilet for any damage.
There is a wiring schematic on the inside of the access cover.
Consult the Homeowners Guide for user directions.
Consult the Homeowners Guide for troubleshooting instructions.
Kohler Co. 3 1288209-2-A

1. Prepare the Site
WARNING: Risk of electrical shock. Connect only to a properly-grounded, grounding-type
receptacle which is protected by a Ground-Fault Circuit-Interrupter (GFCI) or Residual Current
Device (RCD). Do not remove the grounding pin or use a grounding adapter.
CAUTION: Risk of hazardous gases. If the new toilet is not installed immediately, temporarily
place a rag in the closet flange.
NOTE: If the rough-in distance is less than 12″(305 mm) the seat may strike the wall when it is opened.
Confirm the rough-in is 12″(305 mm) before installing the toilet.
Turn off the water supply.
Remove the old toilet.
Remove the wax residue from the flange.
NOTE: T-bolts are not included. T-bolts should be 2-1/4″(57 mm) in length. Longer bolts will cause
difficulty in installation.
Install two 5/16″diameter x 2-1/4″long T-bolts into the floor flange.
Mark the centerlines for the outlet on the floor.
Install the electrical supply at the location shown.
Install the water supply at the location shown.
6"
(152 mm)
12"
(305 mm)
2-3/4" (70 mm)
Supply Stop
Floor Flange
T-Bolt
Scrape off the old
wax seal.
Centerline
Centerline
1288209-2-A 4 Kohler Co.

2. Install the Tank
CAUTION: Risk of property damage. Do not rock or lift the tank after placement. The seal created
by the wax ring may be broken, resulting in leaking.
Position the wax ring on the floor flange.
Remove the tank from the vitreous toilet.
Align the tank over the floor flange and T-bolts.
Lower the tank onto the floor flange with the slots in the base of the tank aligned with the T-bolts.
Carefully align the tank on the centerline.
Press down evenly to set the wax ring.
Floor Flange
Tank
T-Bolts
Wax Ring
Kohler Co. 5 1288209-2-A

3. Secure the Tank
CAUTION: Risk of product damage. Do not overtighten the mounting nuts. Do not cut or shorten the
T-bolts.
Install a washer on each T-bolt.
Thread a nut onto each T-bolt.
Hand tighten the nuts.
Wrench tighten the nuts one quarter turn past hand-tight with a socket wrench.
Connect the water supply hose to the open port on the elbow.
Connect the water supply hose to the water supply stop.
Confirm the cap on the elbow is tight.
Open the water supply stop.
T-Bolt
Washer
Nut
Base of
Tank Assembly
Connect to the
supply stop.
Flexible Hose
Capped
Port
Water Supply
Hose
1288209-2-A 6 Kohler Co.

4. Check the Waterline
CAUTION: Risk of property damage. Before use, open the valve using the adjustment screw to
avoid overflow.
NOTE: The waterline is marked inside the tank by a notch and a label.
Turn the valve adjustment screw counterclockwise to open the valve.
Allow the tank to fill. Check the water level in the tank.
To adjust the water level, use a flat-blade screwdriver to carefully turn the adjustment rod on the
inlet valve. Turning the rod counterclockwise will lower and clockwise will raise the water level.
If further adjustment is required, remove several inches of water from the tank and allow it to refill.
Confirm the water level is correct. Repeat until the correct water level is reached.
Turn off the water supply.
Valve
Adjustment
Waterline
Adjustment
Waterline
Flexible
Hose
Notch
Kohler Co. 7 1288209-2-A

5. Prepare the Tank
CAUTION: Risk of product damage. Confirm the wires and water supply hose will not interfere with the
vitreous shell as it is lowered into place. The vitreous shell may cause damage to the wires or hose.
NOTE: It may be necessary to disconnect the water supply hose and tape it to the floor with the wires to
keep it clear of the vitreous while it is lowered into place.
Place the pump wiring harness, level switch wire, refill tube, electrical plug, and wand wiring
harness on the floor at the location of the rear access opening and tape them on the centerline so
they will not interfere with the vitreous shell.
Clip the spray shield into place over the fill valve.
Refill Tube
Tape
Level
Switch Wire
Electrical Plug
Pump Wiring
Harness
Wand Wiring
Harness
Spray Shield
Flexible
Hose
1288209-2-A 8 Kohler Co.

6. Install the Vitreous Shell
WARNING: Risk of personal injury. The vitreous shell weighs 105 lbs (36 kg). Use proper lifting
technique when handling the vitreous shell. Lift and position the vitreous shell with a partner.
CAUTION: Risk of product damage. Do not set the shell down hard. Gently lift and move the shell if it
is not placed correctly. If handled carelessly, the shell may chip or break.
With assistance, carefully pick up the vitreous shell and slowly lower it over the tank.
Remove the cap from the capped elbow port.
Connect the cleansing hose to the elbow.
Make sure the trapway in the vitreous shell seats fully in the outlet gasket. If the vitreous shell does
not sit evenly on the floor, the trapway may not be properly seated.
Adjust the vitreous shell as needed until the trapway is properly seated.
Reconnect the water supply hose if it was disconnected.
Connect the Wires
Remove the tape from the floor wires and toilet.
Connect the level switch and refill tube.
Connect the wand wiring harness and pump wiring harness.
Vitreous
Tank
Collar
Wand
Wiring Harness
Pump
Wiring Harness
Level Switch
Refill Tube
Kohler Co. 9 1288209-2-A

7. Install the Remote Control
NOTE: For commercial applications, install the commercial mounting bracket and the dock plate.
NOTE: To pair the remote control to the toilet, consult the Homeowners Guide for instructions.
Position the mounting bracket in the desired location on the wall and mark the location of the screw
holes. Remove the bracket.
Drill 1/4″holes at each of the screw locations.
Install an anchor in each of the holes.
Attach the mounting bracket to the wall using the two supplied screws.
Install the batteries into the docking station (consult the Homeowners Guide for instructions if
needed).
Residential
Attach the docking station to the mounting bracket.
Place the remote control on the docking station.
Commercial
To make the remote control tamper resistant, secure the remote control to the docking station using
the supplied washer and screw.
Install the dock plate to the docking station with the four screws.
Position the docking station into the mounting bracket, which will be offset to the left.
Slide the docking station to the right.
Docking Station
36"
(914 mm)
38" (965 mm)–
66" (1676 mm)
Commercial
Mounting Bracket
Docking
Station
Dock Plate
Tamper Resistant
Screw and Washer
(Optional)
Residential
Mounting Bracket
1288209-2-A 10 Kohler Co.