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Watts Model L111

Thermostatic Mixing Valve

Installation Instructions

Valve should be installed by a licensed contractor in

accordance with local codes and ordinances.

A. Mounting the Valve*

1. Remove cover screw using the Allen wrench supplied.

2. Remove the tamper-proof cover.

3. Secure the L111 valve body to the wall using four #10

screws.

* Valve should be installed in a location where it is

accessible for cleaning, service, or adjustment.

NOTE: Allow sufficient clearance to remove tamper-proof cover.

B. Piping**

1. Close both the hot and cold water supply shutoff valves

upstream of the intended installation.

2. Bleed the remaining water from the system.

3. Connect the water supply to the L111 valve as shown

in Fig. 1. Supply piping must be flushed clean before

making connections to the valve.

4. Install Watts Series CS-U combination shutoff/check

valve/strainer or separate check valve, strainers and

shutoff valves upstream of the L111 or to facilitate ser-

vicing and temperature adjustment of the valve.

5. Start Up — Open cold water supply then hot water

supply. Inspect for leaks.

Hot W ater

Supply

Cold W ater

Suppl y

Hot Supply

Watts 1170

or LF1170

or N170 or

LFN170

mixing valve

(optional)

Isolation

Ball V alve

(optional)

Isolation

Ball V alve

Check

V alve

Strainer

Alternate

Piping

Ho t

To Fixture

L111

Cold

Model CS-U

(2 Plcs)

Hot

To Fixture

Cold

Model CS-U

(2 Plcs)

Isolation

Ball Va lv e

(optional)

L111

Fig.1 Typical System Piping.

*See insets A & B on reverse side for details.

IS-L111

IMPORTANT: This valve must be maintained on a regular basis.

Please see reverse side for instructions.

CAUTION: Do not use this valve on systems using a recirculation

device. Systems that use recirculation to maintain selected water

temperature in supply piping must incorporate master mixing

valves such as the Watts Series 1170, LF1170, N170, or LFN170.

** Attach the piping as follows:

Red label — hot water inlet;

Blue label — cold water inlet;

White label — mixed water

outlet.

ASSE 1069 & 1070 Listed

This valve can be adjusted to deliver water at temperatures exceeding 110°F

(43°C). Consequently, after installing the Watts L111 Thermostatic Mixing Valve,

you should always check the outlet water temperature and adjust the valve

to ensure delivery of water at a safe temperature not exceeding 110°F (43°C).

Further, check valves and strainers must be installed in the hot and cold water

supply lines to this valve. Mechanical valves are not failsafe. Due to the effects of

various water conditions, periodic verification of water temperature is required.

Water Temperatures in Excess of 110°F (43°C) Are Dangerous and May Cause

Scalding, Severe Injury or Death!

This valve is not factory pre-set. To deliver the desired mixed water temperature at

the outlet the installer must adjust and verify the temperature at the outlet.

IMPORTANT

WARNING

1 2

Résumé du contenu

Page 1 - Thermostatic Mixing Valve

Watts Model L111 Thermostatic Mixing ValveInstallation InstructionsValve should be installed by a licensed contractor in accordance with local codes

Page 2 - Installation continued

Watts product specifications in U.S. customary units and metric are approximate and are pro-vided for reference only. For precise measurements, please

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Watts L111 Manuel d'utilisateur Page 1

Naviguer en ligne ou télécharger Manuel d'utilisateur pour Accessoires pour l'eau Watts L111. Watts L111 User Manual Manuel d'utilisatio

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Watts L111 Manuel d'utilisateur Page 1

Naviguer en ligne ou télécharger Manuel d'utilisateur pour Accessoires pour l'eau Watts L111. Watts L111 User Manual Manuel d'utilisatio

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