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T-45NL & T-46NL

THERMOSTATIC  MIXING VALVES

Installation Guide

1

Application

Legend thermostatic mixing valves are designed for applications requiring temperature control, scald 
prevention and reduction of thermal shock in domestic potable water distribution (Model T-45NL) 
and radiant heating installations (Model T-46NL).  The three-way thermostatic mixing design permits 
controlled water temperatures to individual or multiple fixtures, gang showers or hydronic heating loops.

Before beginning, check your local code requirements. Select the correct model for your application, as it 
pertains to at-the-source, individual or multiple fixtures, point-of-use or heating systems applications:

Model T-45NL:  Certified in compliance with ASSE 1017, 1069, 1070, and ANSI/NSF 61

Model T-46NL:  Certified in compliance with ASSE 1017 and ANSI/NSF 61

CAUTION!

PLEASE READ THESE INSTRUCTIONS BEFORE INSTALLING AND OPERATING!

Note: Both models feature optional union-connection types in MNPT, compression, press-fit, push-fit, PEX barb (F 1807), and sweat:

MNPT

COMP

PRESS

PUSH

F 1807

SWEAT

Содержание T-45NL

Страница 1: ...le fixtures gang showers or hydronic heating loops Before beginning check your local code requirements Select the correct model for your application as it pertains to at the source individual or multiple fixtures point of use or heating systems applications ModelT 45NL Certified in compliance with ASSE 1017 1069 1070 and ANSI NSF 61 ModelT 46NL Certified in compliance with ASSE 1017 and ANSI NSF 6...

Страница 2: ...o allow for the removal and servicing of the mixing valve LEGEND T 45NL LEGEND T S 1001NL BALL VALVE COLD WATER SUPPLY Typical domestic water distribution installation HOT MIX H H C C C COLD WATER HEATER Float type Air Vent Air Scoop air purger Boiler Condensing Purging Fill Valves System Circulator Thermometer Expansion Tank 3 Way Thermostatic Mixing Valve Model T 46NL Pressure Differential Bypas...

Страница 3: ...ighten the union nuts firmly 4 Pressurize the system and check for leaks Leakage at a union connection may occur if the union nut is over tightened Adjustment T 45NL All adjustments should be performed by a licensed qualified contractor Adjustments must be made while the valve is pressurized 1 Using the forked tool included pry upward at the base of the setting knob until the brass bonnet is expos...

Страница 4: ...mplete revolution See photo F 3 Using a 12 MM socket and ratchet turn the stem CLOCKWISE to INCREASE the cold water flow to the mixed outlet LOWERING the delivered water temperature Turn the stem COUNTER CLOCKWISE to INCREASE the hot water flow to the mixed outlet RAISING the delivered water temperature See photo G 4 Using a thermometer placed in the water flow verify the mixed water temperature A...

Страница 5: ...ntial between hot supply and MIX outlet 21 6 F Supply pressure Static 145 psi Dynamic 72 5 psi Maximum allowable imbalance 2 1 ratio Minimum flow rate 0 5 gpm 0 8 psi see note A Maximum flow rate 15 gpm 125 psi see note A Note A Should not be used for valve selection or system sizing The Cv valve listed on the product submittal sheet should be used for valve selection Maintenance Annually inspect ...

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