Kohler K-72218-2BZ User manual

1433562-2-A
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Installation Instructions
Electronic Kitchen Faucet

Tools and Materials
Before You Begin
WARNING: Risk of fresh water contamination. This faucet
contains back-siphonage protection. Do not remove any
internal components.
WARNING: When using electrical products, basic
precautions should always be followed, including the
following:
DANGER: Risk of electric shock. Connect only to a circuit
protected by a Ground-Fault Circuit-Interrupter (GFCI)*.
WARNING: Risk of electric shock. Grounding is required. A
qualified electrician should make all electrical connections.
WARNING: Risk of electric shock. Disconnect power before
servicing.
WARNING: Risk of injury or property damage. Please read
all instructions thoroughly before beginning installation.
CAUTION: Risk of property damage. The faucet spout
contains a magnet. Do not allow items susceptible to
electromagnetic damage to come into close proximity to the
spout.
Follow all plumbing, electrical, and building codes.
*Outside North America, this device may be known as a Residual
Current Device (RCD).
3/8"
Plus:
• Unswitched Electrical Outlet
1433562-2-A 2 Kohler Co.

Before You Begin (cont.)
CAUTION: Risk of product damage. This product contains
sensitive electronic components. Do not store open containers of
chemical or cleaning products near this product. Cleaning rags or
sponges must be rinsed with fresh water before storage.
IMPORTANT! Do not use a switch-controlled electrical outlet
(typically used for garbage disposals) to provide power to the
faucet.
Class 1 laser product: Complies with 21 CFR 1040.10 and 1040.11.
Observe all local plumbing and building codes.
Provide a constant unswitched 120 VAC electrical outlet located
below the sink within 5’ (1.5 m) of the control box.
Turn off the water supply.
For new installations, assemble the faucet to the sink before
installing the sink.
For uneven mounting surfaces (such as tile grout lines), apply a
suitable sealant under the faucet. Do not use petroleum-based
sealant.
Kohler Co. 3 1433562-2-A

1. Prepare for Installation
NOTE: Handle orientation is designed to be on the right.
Thread the screws into the ring 1/4″(6 mm) past the surface.
Use the escutcheon included with your faucet.
Insert the faucet through the mounting surface with the handle
on the right.
1/4"
(6 mm)
Escutcheon
1433562-2-A 4 Kohler Co.

2. Install the Faucet
Slide the washer and ring over the outlet hose, then feed the
supply hoses and wires through.
Thread the ring onto the shank until the washer contacts the
underside of the sink.
Adjust the ring to align the screws with the front and back of the
faucet.
Use a Phillips screwdriver to securely tighten the screws.
Shank
Outlet Hose
Ring
Washer
1/4"
(6 mm)
Kohler Co. 5 1433562-2-A

3. Connect the Supplies
CAUTION: Risk of restricted water flow and product damage.
Supply hoses must not be taut, kinked, or twisted during
installation. If the supply hoses must be coiled, maintain an inside
diameter of 3″(76 mm).
CAUTION: Risk of fresh water contamination. To prevent water
contamination, the check valves must be installed.
Connect the Supplies
Assemble a check valve to each supply.
Connect and tighten the supply hoses to the check valves.
Place a bucket under the outlet hose.
Turn on the supplies.
Flush the hot and cold water for 1 minute to remove any debris.
Connect the outlet hose to the solenoid inlet.
Connect the Spray Hose
Remove the protective cap.
Solenoid
Weight
Outlet Hose
Ø 3"
(76 mm)
Min
Supply Hose
Check
Valve Outlet
Hose
Inlet
Outlet
Spray
Hose
1433562-2-A 6 Kohler Co.

Connect the Supplies (cont.)
NOTE: The weight must be installed onto the spray hose to act as a
pull stop and to prevent kinking damage.
Slide the weight onto the spray hose.
Connect the spray hose to the solenoid outlet.
Kohler Co. 7 1433562-2-A

4. Connect the Wires
Apply grease (provided) to the sensor socket located on the
circuit board inside the cover. This will provide additional
corrosion protection.
Connect the handle switch and sensor wires from the faucet to
the circuit board.
Connect the power cord to the circuit board.
Connect the solenoid wire to the circuit board.
Plug the power cord into an unswitched 120 VAC outlet. The
power LED on the circuit board will illuminate.
Test activation of the sensor. Refer to the ″Faucet Operation″
section.
Handle Switch
Solenoid
Power Cord
Sensor
Solenoid
Power
LED
Cover
Apply grease.
1433562-2-A 8 Kohler Co.

5. Install the Solenoid
CAUTION: Risk of restricted waterflow. The outlet hose
must not be taut or kinked when installed. Locate the
solenoid valve within 7″(178 mm) to 8″(203 mm) of the
faucet centerline.
NOTE: Locate the solenoid valve within 7″(178 mm) to 8″(203
mm) from the faucet centerline. Allow adequate clearance for
servicing.
Mount the Bracket
NOTE: The mounting bracket should be secured with two suitable
fasteners (not supplied) based on the type and thickness of the
cabinet or wall material.
Fasten the mounting bracket vertically to the cabinet or wall.
Mount the Solenoid and Cover
NOTE: The solenoid may be positioned to the right or left. Remove
the appropriate tab on the cover.
Solenoid
Wire
Mounting
Bracket
Tab
Cover
Solenoid
Kohler Co. 9 1433562-2-A

Install the Solenoid (cont.)
Position the solenoid and cover on the mounting bracket.
Secure the solenoid and cover to the mounting bracket with the
two screws provided.
1433562-2-A 10 Kohler Co.

6. Complete the Installation
Position the Weight
Position the weight between 2″(51 mm) and 3″(76 mm) from the
cabinet floor.
Secure the cable tie around the spray hose just below the weight.
Extend and retract the spray hose to check for smooth operation.
Check for Leaks
Ensure that all connections are tight.
Turn on the water supplies, and check all connections for leaks.
Test the faucet for proper operation. Refer to the ″Faucet
Operation″section.
2" (51 mm) Min
3" (76 mm) Max
Kohler Co. 11 1433562-2-A

Faucet Operation
Rotate the handle outward to the open position to start water
flow. The handle LED will illuminate to indicate that the sensor is
functioning.
Adjust the handle to the desired water temperature.
Wave your hand under the spout to turn the water OFF.
Wave your hand under the spout again to restart the water flow.
NOTE: Some objects that are clear and certain colors are not
detectable by the sensor. Always use your hand for sensor testing.
If needed, refer to the ″Handle LED Adjustment″section for more
information.
NOTE: For extended periods of nonuse, return the handle to the
closed (upright) position. The handle LED will turn OFF, indicating
that water flow is not available.
LED Indicators
Handle LED: Illuminates when the sensor is active.
Power LED: Indicates that there is power to the circuit board.
Features
Automatic shut-off: After 4 minutes of inactivity, the water will
automatically shut OFF.
Sensor
Open Position
Manual
Override
Handle LED
1433562-2-A 12 Kohler Co.

Faucet Operation (cont.)
Sensor override: In the event of power loss, bypass the sensor
function by turning in the override feature on the solenoid valve.
The faucet can then be operated manually.
Kohler Co. 13 1433562-2-A

Handle LED Adjustment
NOTE: The LED should turn ON as the handle is rotated open, and
OFF when the handle is in the upright (closed) position. Use a 5/64″
hex wrench to adjust the valve setscrew as needed.
IMPORTANT! Do not apply upward pressure to the valve setscrew
while making adjustments.
LED is ON when the handle is closed: Tighten the valve
setscrew until the LED turns OFF. Then tighten the setscrew an
additional 1/4 turn.
Handle does not return to the upright position: Loosen the valve
setscrew until the handle rotates to the full upright (closed)
position and the LED turns ON. Then tighten the setscrew until
the LED turns OFF, plus an additional 1/4 turn.
Water does not fully shut off: Loosen the valve setscrew until the
handle rotates to the full upright (closed) position and the LED
turns ON. Then tighten the setscrew until the LED turns OFF,
plus an additional 1/4 turn.
Setscrew
Closed
Position
Open Position
Sensor
Handle
LED
1433562-2-A 14 Kohler Co.

Cleaning the Screens
Sprayhead Screen
Turn the handle to the closed position.
Disconnect the nut at the end of the spray hose.
Remove and clean the screen inside the spray hose.
Reinsert the screen and reconnect the sprayhead.
Solenoid Inlet Screen
Turn the handle to the closed position.
Disconnect the outlet hose from the solenoid.
Remove and clean the inlet screen inside the solenoid.
Reinstall the inlet screen and reconnect the outlet hose.
Screen
Sprayhead
Screen
Outlet
Hose
Solenoid
Spray
Hose
Kohler Co. 15 1433562-2-A

Troubleshooting
CAUTION: Risk of product damage. This product contains
sensitive electronic components. Use care not to damage pins and
connectors during troubleshooting.
CAUTION: Risk of product damage. Do not insert anything other
than the sensor wire into the sensor wire connector (phone jack) on
the circuit board.
NOTE: For service parts information, visit your product page at
kohler.com.
Faucet Troubleshooting Table
Symptoms Probable Causes Recommended Action
1. No water flow. A. The supply
stops are
closed.
A. Confirm that the
supply stops are open.
B. Handle is in
the closed
position.
B. Rotate the handle to the
open position. Refer to
the ″Faucet Operation″
section.
C. The hot
and/or cold
supply hose
is kinked.
C. Confirm that the
supply hoses are not
kinked. If coiled,
maintain an inside
diameter (ID) of 3″(76
mm).
1433562-2-A 16 Kohler Co.
D. The outlet
hose is
kinked.
D. Confirm that the
solenoid valve is
located within 7″(178
mm) to 8″(203 mm) of
the faucet centerline.
E. Handle LED
is not lit. E. Refer to the ″Handle Switch Troubleshooting
Table.″
F. Power LED
on circuit
board is not
lit.
F. Refer to the ″Sensor
Troubleshooting Table.″
G. One or more
screens are
clogged.
G. Refer to the ″Cleaning
the Screens″section.

Troubleshooting (cont.)
Faucet Troubleshooting Table
Symptoms Probable Causes Recommended Action
2. Low water flow. A. The supply
stops are
partially
closed.
A. Confirm that the
supply stops are fully
open.
B. Handle is
partially
closed.
B. Rotate the handle to the
full open position.
C. The hot
and/or cold
supply hose
is kinked or
twisted.
C. Confirm that the
supply hoses are not
kinked or twisted. If
coiled, maintain an ID
of 3″(76 mm).
D. The outlet
hose is
kinked.
D. Confirm that the
solenoid valve is
located within 7″(178
mm) to 8″(203 mm) of
the faucet centerline.
E. One or more
screens are
clogged.
E. Refer to the ″Cleaning
the Screens″section.
F. Cracked
diaphragm. F. Replace the solenoid valve assembly.
3. Poor spray
pattern. A. The spray nozzles are
clogged.
A. Rub your finger over
the nozzles with water
running to dislodge
debris.
Kohler Co. 17 1433562-2-A
4. Power LED is not
lit. A. No power to the circuit
board.
A. Check the power
supply connections to
the circuit board.
B. Power cord is
plugged into
a switched
outlet.
B. Plug the power cord
into an unswitched 120
VAC outlet (test the
outlet with a radio or
other device). Confirm
that the power LED
illuminates.
5. Water drips or
trickles when
faucet is not in
use.
A. Manual
override is
partially
engaged.
A. Turn the manual
override clockwise until
it stops; then turn it
counterclockwise until
the water drip stops.

Troubleshooting (cont.)
Solenoid Troubleshooting Table
Symptoms Probable Causes Recommended Action
1. Water leaks from
the solenoid valve. A. Hose connections
are not
secure.
A. CAUTION: Risk of
personal injury or
product damage. Turn
off the main power and
water supply. Check all
connections. Make
adjustments as needed.
B. Internal leak. B. Replace the solenoid
valve assembly.
2. No audible ″click″
when solenoid is
activated.
A. Loose
solenoid wire
connection.
A. Check solenoid wire
connection to the circuit
board.
B. Solenoid
valve is not
functioning.
B. Replace the solenoid
valve assembly.
Handle Switch Troubleshooting Table
Symptoms Probable Causes Recommended Action
1. Handle LED is lit
when the handle
is closed.
A. Valve
setscrew
needs
adjustment.
A. Refer to the ″Handle
LED Adjustment″
section.
1433562-2-A 18 Kohler Co.
2. Handle does not
return to the
upright position.
A. Valve
setscrew
needs
adjustment.
A. Refer to the ″Handle
LED Adjustment″
section.
3. Water does not
fully shut off. A. Valve setscrew
needs
adjustment.
A. Refer to the ″Handle
LED Adjustment″
section.
4. Handle LED does
not illuminate
when the handle
is rotated open.
A. Loose handle
switch wire
connection.
A. Check handle switch
wire connection to the
circuit board.
B. Circuit board
is not
functioning
correctly.
B. Replace the cover
assembly.

Troubleshooting (cont.)
Sensor Troubleshooting Table
Symptoms Probable Causes Recommended Action
1. Intermittent sensor
operation. A. Debris on the sensor lens. A. Use mild soap and water to gently remove
debris from the sensor
lens.
B. Sensor is
detecting
steam.
B. Rotate the spout away
from the steam.
2. Handle LED is lit,
but power LED is
not.
A. Loose sensor
wire
connection.
A. Check sensor wire
connection to the circuit
board.
B. Debris on the
sensor wire
connector.
B. At the circuit board,
gently disconnect,
clean, and reconnect the
sensor wire connector.
C. Circuit board
is not
functioning.
C. Replace the cover
assembly.
Kohler Co. 19 1433562-2-A

1433562-2-A 20 Kohler Co.
Remote Control Compliance
This device complies with Part 15 of the FCC Rules. Operation is subject to
the following two conditions:
1. This device may not cause harmful interference, and
2. This device must accept any interference received, including interference
that may cause undesired operation.
Changes or modifications not expressly approved by the party responsible
for compliance could void the user’s authority to operate the equipment.
This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to Part 15 of the FCC Rules. These limits
are designed to provide reasonable protection against harmful interference
in a residential installation. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and used in accordance
with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct
the interference by one of the following measures:
•Reorient or relocate the receiving antenna.
•Increase the separation between the equipment and receiver.
•Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected.
•Consult the dealer or an experienced radio/TV technician for help.
This Class B digital apparatus complies with Canadian ICES-003.