Kohler K-R77748 Assembly instructions

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1320925-2-C
Installation and Care Guide
Guide d’installation et d’entretien
Guía de instalación y cuidado
Electronic Kitchen Sink Faucet
Robinet d’évier électronique
Grifería electrónica de fregadero
K-R77748

IMPORTANT INSTRUCTIONS
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.
Follow all plumbing, electrical, and building codes.
*Outside North America, this device may be known as a Residual
Current Device (RCD).
Tools and Materials
Important Information
WARNING: Risk of fresh water contamination. This faucet
contains back-siphonage protection. Do not remove any
internal components.
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.
Optional:
Unswitched Electrical Outlet
Plywood Support
Bucket 3/8"
1320925-2-C 2 Kohler Co.

Important Information (cont.)
IMPORTANT! Do not use a switch-controlled electrical outlet
(typically used for garbage disposals) to provide power to the
faucet.
Observe all local plumbing and building codes.
If installing the optional power supply, make sure there is an
unswitched 120 V electrical outlet within reach.
Turn off the water supply.
For new installations, assemble the faucet to the sink before
installing the sink.
Kohler Co. 3 1320925-2-C

Before You Begin
CAUTION: Risk of restricted water flow and product damage.
Supply hoses must not be taut, kinked, or twisted during
installation.
IMPORTANT! Risk of restricted waterflow. The spray hose must
not be taut or kinked when installed.
NOTE: Allow adequate clearance for servicing.
Before installing the faucet, make sure the cabinet area under the
sink can accommodate all of the required components.
If installing the optional power supply, make sure that there is an
unswitched 120 V electrical outlet within reach.
Copper Outlet Tube
Supply Hose
Valve Box
Spray Hose Weight
Spray Hose
Supply Stop
Battery Holder
Unswitched
Electrical
Outlet
(Optional) Battery Holder Wire
1320925-2-C 4 Kohler Co.

1. Install the Faucet
NOTE: Handle orientation is designed to be on the right.
Install the gasket to the faucet with the foam side down.
For three-hole sinks: Place the escutcheon and undercover over
the faucet holes. Insert the faucet through the escutcheon and
mounting surface with the handle on the right.
For single-hole sinks: Insert the faucet through the mounting
surface with the handle on the right.
For thin gauge stainless steel sinks, consider installing a 1/2” (13
mm) plywood support (not supplied) between the washer and
the sink.
Slide the washer and ring over the hoses and wires and up to the
shank.
Thread the ring onto the shank until the washer contacts the
underside of the sink.
Make sure that the faucet is positioned correctly.
Securely tighten the screws.
Escutcheon For
Three-Hole Sinks
Undercover
Washer
Ring
Shank
Plywood
(Optional)
Gasket
Kohler Co. 5 1320925-2-C

2. Connect the Hoses
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).
Connect and tighten the supply hoses to the supply stops.
Place a bucket under the copper outlet tube.
Turn on the water supplies.
Flush hot and cold water into a bucket for 1 minute to remove
any debris.
Ø 3"
(76 mm) Min
Supply Hose
Copper
Outlet Tube
1320925-2-C 6 Kohler Co.

3. Install the Valve Box
IMPORTANT! Risk of restricted waterflow. The spray hose must
not be taut or kinked when installed.
Push the valve box inlet fitting onto the copper outlet tube until a
click is heard.
Push the spray hose connector onto the outlet connector on the
valve box until a click is heard.
Connect the sensor wire to the valve box connector. Align the
arrows on both connectors and push together. Tighten the nut to
secure the connection.
Copper Outlet
Tube
Valve Box
Sensor Wire
Spray Hose
Kohler Co. 7 1320925-2-C

4. Install the Batteries
NOTICE: Before selecting a location for the battery holder, verify
that the battery holder wire will reach the power wire on the valve
box.
Install the mounting screw using the appropriate anchor and
fastener for the cabinet or wall material. Leave enough length to
hang the battery holder.
Press the tab on the battery cover to remove. Insert six AA
batteries into the battery pack.
IMPORTANT! Do not use rechargeable or lithium ion batteries.
Reinstall the cover on the battery holder.
Hang the battery holder on the mounting screw. Adjust the screw
if necessary to secure the battery holder.
Connect the battery holder wire to the power wire on the valve
box.
Mounting
Screw
1320925-2-C 8 Kohler Co.

5. Complete the Installation
Position the Spray Hose Weight
NOTICE: Make sure that the spray hose weight will not interfere
with the valve box or wire connections.
Position the weight on the spray hose as shown and squeeze to
connect the clasp.
Extend and retract the spray hose to check for smooth operation.
Adjust the location of the weight as necessary.
Check for Leaks
Ensure 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) –
3" (76 mm)
2" (51 mm) –
3" (76 mm)
Kohler Co. 9 1320925-2-C

Faucet Operation
Rotate the handle outward to the open position to start water
flow.
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: For extended periods of nonuse, return the handle to the
closed (upright) position.
Low Battery LED
When the batteries are low, the red LED in the sensor will flash
for 15 days.
Features
Automatic shut-off: After 4 minutes of inactivity, the water will
automatically shut OFF.
Sensor
Open
Position
1320925-2-C 10 Kohler Co.