Taco 5123-WH-N Instruction Sheet

Lead free (≤ .25% pb) mixing valve

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5123-WH-N Lead Free (≤ .25% Pb) Mixing Valve

SUPERSEDES: July 2, 2015

Plant I.D. 001-4206

WARNING: Water temperatures above 120°F can cause serious injury. Mixing valve temperature setting should

be done by a licensed professional per local code requirements. Use an accurate water thermometer and ver-

ify the final water temperature. The thermostatic strip provided must not be used for final water temperature

verification.

WARNING: The 5123-WH-N must not be installed on steam systems (water systems only).

WARNING: 5123-WH-N mixing valves are not designed to compensate for system pressure fluctuations

beyond the valves variation rating and should not be used where more sophisticated pressure compensating

temperature controls are required. These mixing valves are not intended to provide protection against

thermal shock.

CAUTION: Valve must not be subjected to heat during the installation, this may damage the valve's internal

components.

CAUTION: Do not use excess thread sealant (in any form) as this may cause valve failure.

GENERAL:

The Taco 5123-WH-N is dual listed for both ASSE 1070 and ASSE 1017 applications.

• All installations should be carried out by a Licensed Professional. Failure to comply with all aspects of these instruc-

tions may result in unsafe performance. All installations must comply with relevant State and Local codes or authori-

ties.

• Ensure compatibility of valve installation, e.g. temperature of hot water, inlet pressure, flow rates, etc. -

refer to specification section. If the site conditions are outside of the specifications for the valve, the site

conditions must be corrected prior to installing the valve.

• Install in accordance with markings on valve body, i.e. hot water inlet - marked "H", cold water inlet -

marked "C" and mixed outlet - marked "M".

• Any inconsistency between these instructions and any specific instructions, bylaws or codes issued by

local authorities must be referred back to Taco, Inc. prior to any installation taking place.

• During startup ensure that the valve is set to the desired temperature (valve preset at 115-120°F (46-

49°C) with 150°F (66°C) hot water inlet temperature). If the valve temperature needs to be adjusted please

refer to the instructions below (MIXING VALVE TEMPERATURE ADJUSTMENT).

• A temperature strip is provided with each mixing valve and can be used as a reference to set the temper-

ature. The temperature strip must not be used for final temperature verification.

NOTE: If the water supply is of poor quality a filter or strainer should be fitted at the system inlet so

that both the water heater and the mixing valve are protected from dirt and debris.

Instruction Sheet

102-492

EFFECTIVE: August 18, 2015

Page 1 CAUTION: Do not use excess thread sealant (in any form) as this may cause valve failure. GENERAL: The Taco 5123-WH-N is dual listed for both ASSE 1070 and ASSE 1017 applications. • All installations should be carried out by a Licensed Professional. Failure to comply with all aspects of these instruc- tions may result in unsafe performance.
Page 2 - until the desired set point is reached. INSTALLATION IN RECIRCULATED SYSTEMS: The 5123-WH-N includes a recirculation port to allow return water from the system to be connected directly back into the mixing valve. To use this recirculation port, remove...
Page 3 CHECKING/SERVICING THE MIXING VALVE: • Note that this thermostatic mixing valve is a SAFE- TYVALVE. It does not require routine maintenance but should be checked annually to be sure it is func- tioning properly. For installations with poor or unknown water quality, or other adverse supply con- ditions, it may be necessary to check the valve a tmore frequent intervals.
Page 4 2. As tested in accordance with ASSE 1070. MAINTENANCE: The Taco 5123-WH-N Mixing Valve is a SAFETY VALVE. It does not require routine maintenance but should be checked annually to be sure it is functioning properly. For installations with poor water quality it may be necessary to inspect the mixing valve more frequently.