Kohler K-2971 Istruzioni per il montaggio

Installation and Care 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

1205550-2-C

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-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 ASME A112.18.1/CSA B125.1 and ASSE

1016/ASME A112.18.1016/CSA B125.16.

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 adjacent box and on the valve label. Then insert these instructions

into the plastic bag included with the valve package, and attach the

plastic bag to the valve handle for the homeowner’s reference.

1205550-2-C 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 and Materials

Before You Begin

CAUTION: 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.

Strap

Wrench

Solder

Hex

Wrench

Thread

Sealant

Plumbers

Putty Thermometer

Kohler Co. 3 1205550-2-C

Before You Begin (cont.)

NOTE: For service parts information, visit your product page at

www.kohler.com/serviceparts.

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 pipes thoroughly after installing the valve body.

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 piping between the valve and the spout.

Kohler Co. 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.

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 water supply.

Install or relocate the supplies as necessary.

Support Framing

Determine the location of the valve, and install the support

framing.

1205550-2-C 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 pipes to the framing.

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

extends at least 2″(51 mm) beyond the ﬁnished wall.

72" (1829 mm) - 78" (1981 mm)

To Floor (Typical)

3/4" Adapter or

Solder Direct

3/4"

Copper

or Pipe

3/4"

Elbow

48" (1220 mm)

to Floor Hot Supply

Cold Supply

Temporary

Nipple

Kohler Co. 5 1205550-2-C

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 pipes to

the bath and shower outlets of the valve.

Cold Inlet

Showerhead

Hot

Inlet

Hot

Supply

Twin

Ell

Cold

Supply

10"

(254 mm)

To Spout

This feature faces downward

for bath/shower installation.

1205550-2-C 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 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.

Hot Supply

1" Copper Tube

Plaster Guard

Screws

Cap

Assembly

Cold Supply

1" Copper Tube

This feature faces downward

for back-to-back installation.

180˚

Kohler Co. 7 1205550-2-C

5. Multi-Showerhead Layout

1/2" Supply

1/2"

Supply

3/4" Supply

K-2971 Valve

Fixed Showerhead or

Handshower

Vacuum Breaker

(for use with Handshower)

Pressure Loop with Bodysprays

3-way Transfer Valve

and Trim

Showerhead

1205550-2-C 8 Kohler Co.

6. Flush the Pipes

Disassemble the valve as shown to remove the internal

components.

Slowly open the water supplies to run water through the supply

pipes 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

installation 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.

Pressure

Balancing Unit

Valve Cap

Screw

Stop

Cover

Valve

Stop

Valve Assembly

Initial

Installation

Position

Water

Outlet Hole

PBU

Valve

Final Install

Position

PBU Installation

Screw

Kohler Co. 9 1205550-2-C

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.

1205550-2-C 10 Kohler Co.

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