Kohler K-11748-K Assembly instructions

Installation and Care Guide
Bath and Shower Valve
Mproduct numbers are for Mexico (i.e. K-12345M)
Los números de productos seguidos de
Mcorresponden a México (Ej.
K-12345M)
Français, page “Français-1”
Español, página “Español-1”
K-11748-K K-11748-KS
1128093-2-E

IMPORTANT INSTRUCTIONS
READ AND SAVE FOR THE
CONSUMER
WARNING: Risk of scalding or other severe injury.
•Before completing installation, the installer must set the
maximum water temperature setting of this valve to minimize the
risks associated with scalding hazards according to ASTM F 444.
•Do not install a shut-off device on either outlet of this valve. The
installation of any such device may create a cross-flow condition
at the valve and affect the water temperature.
•Factors that change the temperature of the water supplied to the
valve, such as seasonal water temperature changes, and water
heater replacement or servicing, will change the maximum water
temperature supplied by the valve and may create a scalding
hazard. The pressure-balancing valve will not compensate for
changes in the water supply temperature; adjust the maximum
water temperature setting of this pressure-balancing valve when
such changes occur.
•Pressure-balancing valves may not provide protection against
scalding if there is a failure of other temperature-limiting devices
elsewhere in the plumbing system.
NOTICE: Only apply silicone based lubricants to these valves. Do
not use petroleum based lubricants. Petroleum based lubricants will
harm the O-rings, seals, and plastic components.
The installer is responsible for installing the valve and adjusting the
maximum water temperature of this pressure-balancing valve
according to instructions.
This valve meets or exceeds ANSI A112.18.1 and ASSE 1016.
If you do not understand any of the installation or temperature
adjustment instructions in this document, in the United States please
contact our Customer Care Center at 1-800-4KOHLER. Outside the
U.S., please contact your distributor.
IMPORTANT NOTICE TO INSTALLERS! Please fill in the blanks in
the information box below and on the valve label. Retain this
information for future reference.
1128093-2-E 2 Kohler Co.

IMPORTANT INSTRUCTIONS (cont.)
NOTICE TO HOMEOWNERS! This device has been preset by
_______________________ of _______________________________ to
ensure a safe maximum temperature. Any change in the setting may
raise the discharge temperature above the limit considered safe, and
lead to scalds.
Date: ______________
Tools
Important Information
WARNING: Risk of scalding. High water temperature can
cause severe burns. Set the water temperature at or below
120°F (49°C) following the adjustment procedure.
NOTICE: Do not force the handle in any direction. Forcing the
handle will damage the valve.
NOTE: The primary outlet is the outlet that the water will flow
from when the valve is turned on. Water will flow from the
secondary outlet when the diverter is pressed.
This valve can be used for two different installation
configurations: 1) Bath Spout (primary) with Showerhead or
Handshower (secondary) and 2) Showerhead (primary) with
Handshower (secondary). See the ″Installation Options″section
for example piping options. Follow only the instructions that
apply to your chosen installation.
Strap WrenchSealant TapeSolder
Hex Wrench
Hacksaw or Tubing Cutter
5/64"
Kohler Co. 3 1128093-2-E

Important Information (cont.)
This valve can be used for thin and thick wall installations. Thin
wall installations are typically fiberglass and acrylic. Thick wall
installations are typically tile, plaster, marble, or other similar
material.
Observe all local plumbing and building codes.
Shut off the water supply.
1128093-2-E 4 Kohler Co.

Preparation
Bath as Primary Outlet Showerhead as
Primary Outlet
Installation Options
12
Kohler Co. 5 1128093-2-E

1. Prepare the Valve
IMPORTANT! The internal components of the valve will only need
to be removed for back-to-back installations (reversed valve only) or
installations that require soldering of connections.
NOTE: Only valves with stops will include the stop assembly.
Solder Installations Only
Remove the plaster guard (not shown).
Remove internal valve components as shown and set aside.
Back-to-Back Installations Only
Remove the plaster guard (not shown).
For the reversed valve, remove internal components as shown
and set aside. The stop assembly does not need to be removed if
soldering is not needed.
Stop
Assembly
1128093-2-E 6 Kohler Co.

2. Roughing-In
Showerhead/Bath Spout Installations
For Back-to-Back Installations: Proceed to the ″Install the Supply
Piping and Valve, Back-to-Back″section.
Route the supplies and install the valve. Refer to the roughing-in
illustration for your installation.
NOTE: The position of the 2x4 bracing is dependent on the
thickness of your finished wall.
Install 2x4 bracing behind the plate as shown.
Install bracing at the showerhead and bath spout outlet
installation locations.
Connect the water supplies using 1/2” copper, CPVC, or PEX
components. Use thread sealant on all threaded connections.
Proceed to the “Route the Piping” section for your installation
configuration.
4" (102 mm)
Thick Wall
7" (178 mm) –
18" (457 mm)
[10" (254 mm)
Recommended
72" (1829 mm) –
78" (1981 mm)
To Floor
(Typical)
Cold Supply
Hot Supply
Finished
Wall
Finished Wall
Thin Wall
2x4 Bracing
2-1/16" (52 mm)
2-1/16" (52 mm)
2-3/4" (70 mm) –
3-1/2" (89 mm)
2-3/4" (70 mm)
Kohler Co. 7 1128093-2-E

3. Roughing-In
Showerhead/Handshower Installations
For Back-to-Back Installations: Proceed to the ″Install the Supply
Piping and Valve, Back-to-Back″section.
Route the supplies and install the valve. Refer to the roughing-in
illustration for your installation.
NOTE: The position of the 2x4 bracing is dependent on the
thickness of your finished wall.
Install 2x4 bracing behind the plate as shown.
NOTE: The outlet positions are dependant on your particular
installation and may differ from the illustration shown.
Install bracing at the showerhead and handshower outlet
installation locations.
Connect the water supplies using 1/2” copper, CPVC, or PEX
components. Use thread sealant on all threaded connections.
48" (1220 mm)
To Floor
Cold Supply
Hot Supply
72" (1829 mm) –
78" (1981 mm)
To Floor (Typical)
2x4 Bracing
Thin Wall
2-3/4" (70 mm)
2-1/16" (52 mm)
Finished Wall
Finished
Wall
2-3/4" (70 mm) –
3-1/2" (89 mm)
2-1/16" (52 mm)
Thick Wall
1128093-2-E 8 Kohler Co.

Roughing-In (cont.)
Proceed to the “Route the Piping” section for your installation
configuration.
Kohler Co. 9 1128093-2-E

4. Install the Supply Piping and Valve
Back-to-Back Installation
NOTICE: Do not install the valve body upside down.
Route the supplies and install the valves. Refer to the roughing-in
illustration for your installation.
NOTE: One valve will have reversed supply connections, hot
supply to ″COLD″inlet and cold supply to ″HOT″inlet.
Connect the water supplies as shown. Use sealant tape on all
threaded connections.
Install 2x4 bracing behind the plate (not shown).
Proceed to the “Route the Piping” section for your installation
configuration.
Cold Supply
Hot Supply
1128093-2-E 10 Kohler Co.