Prepare The Site - Kohler K-3901 Installation Manual

K-7420 Premium
Dock Power Cord
(not required
for K-7421)
Supply Stop
3" (76 mm) Max
When Located
Behind Toilet

1. Prepare the Site

WARNING: Risk of electric shock. Disconnect power before installation or servicing.
WARNING: Risk of electric shock. Connect only to a properly-grounded, grounding-type
receptacle which is protected by a 120 V, 15 A minimum, 60 Hz Ground-Fault Circuit-Interrupter
(GFCI) or Residual Current Device (RCD). Do not remove the grounding pin or use a grounding
adapter.
WARNING: Risk of electrical shock. For hardwire installations/through-floor electrical supply:
Connect only to a properly-grounded, dedicated circuit protected by an Class A Ground-Fault
Circuit-Interrupter (GFCI) or Residual Current Device (RCD).
NOTE: The electrical outlet and water supply may also be located behind the toilet. If it is located behind
the toilet, the water supply stop must extend no more than 3" (76 mm) beyond the finished wall. If located
behind the toilet, the supply stop must be a model that connects at a 90° angle. The handle should be
easily accessible.
NOTE: Locating the supply stop behind the toilet will make it difficult to remove the back panel. It may
be necessary to remove the toilet to service items behind the back panel if the supply stop extends more
than 3" (76 mm) from the wall.
Install the Remote Control
NOTE: If the K-7421 standard remote control is included with your model, no cord is required.
Install the remote control docking station now following the installation instructions supplied with
the remote control.
Install the Water Supply
1212876-2-B
2" (51 mm)
8" (203 mm)
2-5/8"
(67 mm)
Ø 1-1/2" (38 mm)
Water Supply Hole
(for through-the-floor
installations only)
GFCI/RCD
Protected
Receptacle
Ø 1-1/4" (32 mm)
Power Supply Hole
(for through-the-floor
installations only)
1-5/8"
(41 mm)
8
6"
(152 mm)
4"
(102 mm)
12" (305 mm) From
Finished Wall
Recommended,
11-3/4" (298 mm) Min
Floor Flange
Kohler Co.