Kohler K-2971 Manuel utilisateur

Installation Guide

Pressure Balancing Valve

Mproduct numbers are for Mexico (i.e. K-12345M)

Los números de productos seguidos de

Mcorresponden a México (Ej.

K-12345M)

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Español, página ″Español-1”

K-2971

1150733-2-A

IMPORTANT INSTRUCTIONS

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-balanced valve will not compensate for

changes in the water supply temperature; adjust the maximum

water temperature setting of this pressure-balanced valve when

such changes occur.

•Pressure-balanced 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-balanced 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 in the Homeowners Guide and on the valve label.

Retain the Homeowners Guide for future reference.

1150733-2-A 2 Kohler Co.

Tools and Materials

Before You Begin

WARNING: Risk of product damage. When using this valve

in a ﬁberglass or acrylic installation, use the thin wall

installation kit (88526).

CAUTION: Risk of product damage. This valve contains

plastic and rubber components. Do not apply excessive heat

to the valve body when soldering.

CAUTION: Risk of product damage. Do not apply ﬂux or

acids directly to the valve, as damage may result.

CAUTION: Risk of product damage. Do not apply

petroleum-based lubricants to the valve components, as

damage may result.

IMPORTANT! The installer is responsible for installing the valve

and adjusting the maximum water temperature of this valve

according to instructions.

Observe all local plumbing and building codes.

This valve requires a minimum operating pressure of 15 psi (103.4

kPa).

The valve shuts off by water pressure. Do not force the handle in

any direction. To turn the valve off, gently turn it to the ″Off″

position.

Flush all piping thoroughly after installing the valve body.

Pipe

Wrench Adjustable

Wrench Strap

Wrench Hacksaw or Tubing Cutter

Propane

Torch

Solder

Hex

Wrench

Thread

Sealant

Plumbers

Putty

Assorted

Screwdrivers Thermometer

Kohler Co. 3 1150733-2-A

Before You Begin (cont.)

If inlet conditions differ from those used during factory

calibration, it may be necessary to re-calibrate the valve after

installation.

Do not use plastic pipe between the valve and the spout. Kohler

recommends the use of 3/4″copper tube. Iron pipe is not

recommended.

This valve does not have an integral aspirator. For installations

that use a bath diverter spout, you must install a twin ell (K-9663)

with integral aspirator between the valve and the bath spout. If

these thermostatic mixing valves are installed without an

aspirator it will cause water to ﬂow from the shower and bath

spout at the same time.

Kohler Co. reserves the right to make revisions in the design of

products without notice, as speciﬁed in the Price Book.

1. Prepare the Site

IMPORTANT! If the bath has been installed, cover it to prevent

damage to the bath surface.

Rough Plumbing

Shut off the main water supply.

Install or relocate the supplies as necessary.

Support Framing

Determine the location of the valve, and install the support

framing.

1150733-2-A 4 Kohler Co.

2. Install the Valve - Single Showerhead Only

Install the valve on the support framing so the ″UP″mark on the

valve is facing upward.

Connect the water supplies to the valve body using elbows, 3/4″

copper tubing or pipe, and adapters (if needed). Use thread

sealant on all threaded connections.

IMPORTANT! Secure the piping to the framing.

Temporarily install a 1/2″nipple to the shower elbow so it

extends at least 2″(5.1 cm) beyond the ﬁnished wall.

Hot Supply

72"-78"

(182.9 - 198.1 cm)

To Floor (Typical)

Temporary

Nipple

Cold

Supply

3/4" Adapter or

Solder Direct

3/4"

Elbow

3/4"

Copper

or Pipe

48" (122 cm)

To Floor

Kohler Co. 5 1150733-2-A

3. Install the Valve - Bath/Shower Application

NOTE: For installations that use a bath diverter spout and a

showerhead, install a twin ell (K-9663) between the valve and the

spout.

Install the valve on the support framing so the ″UP″mark on the

valve is facing downward.

If the hot water supply is connected to the cold inlet, the cap

assembly must be rotated 180° to ensure proper orientation; see

the enlarged view showing the cap rotated 180°.

Install elbows and adapters (if needed) to 3/4″copper tubing of

the proper length. Apply thread sealant, and connect the piping

to the bath and shower outlets of the valve.

This feature faces downward

for bath/shower installation.

Showerhead

Cold Inlet

Cold

Supply

Hot

Inlet

10"

(25.4 cm)

To Spout

Twin

Ell

Hot

Supply

1150733-2-A 6 Kohler Co.

4. Back-to-Back Valve Installation

Install both valves following the valve installation instructions.

The supplies to one of the valves will be reversed.

Remove the plaster guard, cap, cap assembly, and collar from the

valve from the valve with the reversed supply connections.

Rotate the cap assembly and collar 180° (tab on bottom).

Reassemble and securely tighten the screws on the cap assembly.

Reinstall the plaster guard.

This feature faces downward

for back-to-back installation.

Cold Supply 1"

Copper Tube

Hot Supply 1"

Copper Tube

180˚ Screws

Plaster Guard

Cap

Assembly

Kohler Co. 7 1150733-2-A

5. Multi-Showerhead Application Layout

1/2" Supply

1/2"

Supply

3/4" Supply

K-2971 HiFlow Rite-Temp Valve

Fixed Showerhead or

Handshower

Vacuum Breaker

(for use with Handshower)

Pressure Loop with Bodysprays

K-405 3-way Transfer Valve and

K-T9474 Trim

Showerhead

1150733-2-A 8 Kohler Co.

6. Flush the Piping

Disassemble the valve as shown to remove the internal

components.

Slowly open the water supplies to run water through the supply

piping and valve body to remove any debris.

Inspect the two inlet seals of the pressure balancing unit (PBU). If

the seals are damaged, replace them with the provided extra inlet

seals. Lubricate the seals using the capsule provided.

To reinstall the PBU, push it into the valve in the initial install

position with the nuts on the PBU toward the hot inlet. Make

sure the PBU seals do not come in contact with the inlet/outlet

holes during initial installation because their rough edges may

damage the seals.

Rotate the PBU counterclockwise while applying downward

pressure until it is seated in the seating indents on the bottom of

the valve. The PBU should not rotate when it is properly seated.

Reassemble the remaining valve components as shown.

PBU InstallationValve Assembly

Pressure

Balancing Unit

PBU

Valve

Valve Cap

Valve

Stop

Cover

Screw

Water

Outlet Hole

Initial Install

Position

Final Install

Position

Kohler Co. 9 1150733-2-A

7. Installation Checkout

Install caps to the temporary bath and shower nipples.

Turn on the hot and cold water supplies, and check the new

installation for leaks.

Remove the caps from the temporary nipples.

Remove the plaster guard.

Turn the valve stem to the ″On″position, and cycle the control

through its operating range. Check for leaks.

For bath and shower installations, check the diverter system from

spout to showerhead.

Turn the valve off.

If the valve has stops, rotate both stop adjustments fully

clockwise.

Turn the valve on and verify that water does not run.

Turn the valve off and rotate both stop adjustments fully

counterclockwise.

Reinstall the plaster guard.

Rotate stops

1/4 turn.

1150733-2-A 10 Kohler Co.

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