Watts LFMMV Series User Manual

Series LFMMV
Thermostatic Tempering Valves
Sizes:
1
⁄2",
3
⁄4", 1"
IS-MMV-M1
LFMMV-UT-M1
LFMMV-QC-M1
Triple Listed!
ASSE 1017,
ASSE 1069 & ASSE 1070
WARNING
!
Read this Manual BEFORE using this equipment.
Failure to read and follow all safety and use infor-
mation can result in death, serious personal injury,
property damage, or damage to the equipment.
Keep this Manual for future reference.
You are required to consult the local building and plumbing
codes prior to installation. If the information in this manual is
not consistent with local building or plumbing codes, the local
codes should be followed. Inquire with governing authorities for
additional local requirements.
WARNING
!
FAILURE TO COMPLY WITH PROPER INSTALLATION
AND MAINTENANCE INSTRUCTIONS COULD
CONTRIBUTE TO THE VALVE FAILURE, RESULTING IN
INJURY AND/OR DEATH.
TO ENSURE THE ACCURATE AND RELIABLE
OPERATION OF THIS PRODUCT, IT IS ESSENTIAL TO:
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WARNING
!
WARNING
!
Need for Periodic Inspection and Yearly Maintenance:
Periodic inspection and yearly maintenance by a licensed
contractor is required. Corrosive water conditions
and/or unauthorized adjustments or repair could render
the valve ineffective for service intended. Regular check-
ing and cleaning of the valve’s internal components
and check stops helps assure maximum life and proper
product function. Frequency of cleaning and inspection
depends upon local water conditions.
*The wetted surface of this product contacted by consumable water
contains less than 0.25% of lead by weight.
Installation Instructions
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NOTICE
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Watts LFMMV Series Specifications

General

Brand	Watts
Model	LFMMV Series
Category	Control Unit
Language	English

Summary

Safety and Installation Warnings

General Safety and Manual Usage

Read manual before use; failure to follow warnings can result in death, injury, or property damage.

Installation and Maintenance Compliance

Proper installation and maintenance are essential for valve operation and safety to prevent injury or death.

Local Code and Local Requirements

Consult local building and plumbing codes; follow local codes if inconsistent with manual information.

Installation Instructions

Standard Installation Procedures

Covers shutting off water, flushing, connecting piping, valve orientation, soldering, and startup.

Quick-Connect Installation

Detailed steps for connecting and disconnecting using quick-connect tailpieces for various pipe sizes.

PEX Tubing Quick-Connect

Specific instructions for installing PEX tubing with pipe stiffeners and collet clips for quick-connect fittings.

Temperature Adjustment

Guide on adjusting the valve's mixed water outlet temperature using a hex wrench and thermometer.

Troubleshooting and Specifications

Pressure and Temperature Flow Rate

Details minimum supply pressure, inlet/outlet temperatures, flow rates, and pressure differentials.

Capacity Chart

Illustrates pressure drop versus flow rate for the valve.

LFMMV-M1 Troubleshooting Guide

Addresses common problems like set point issues, flow, temperature maintenance, noise, and no flow.

Warranty and Compliance Information

Provides limited warranty details, California Proposition 65 warning, and company contact information.