Install Instructions

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Instruction Sheet

5120 Mixing Valve

102-413

SUPERSEDES: New EFFECTIVE: June 1, 2010

Plant I.D. 001-3948

GENERAL:

• All installations should be carried out by a Licensed

Professional.

• Ensure compatibility of valve installation, e.g. tempera-

ture of hot water, inlet pressure, and flow rates - refer to

specification section.

• Install in accordance with markings on valve body, i.e.

hot water inlet - marked “H”, cold water inlet - marked

“C” and mixed outlet - marked with directional arrow.

• Valve may be installed in any position.

• 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.

• The Taco Series 5120 Mixing Valve must not be fitted on

steam supplied systems.

• During startup ensure that the valve is set to the desired

temperature (valve preset to 120°F (49°C) with 150°F

(66°C) hot water inlet temperature). If the valve tempera-

ture needs to be adjusted please refer to the instructions

below (SETTING VALVE OUTLET TEMPERATURE).

FITTING VALVE TO PIPEWORK:

• Flush all piping thoroughly before installing the valve

(using water only).

• Valve comes complete with union type connections for

ease of installation and service.

• Valve must be removed from the piping prior to soldering

the end connections. It is recommended to use a spacer

piece while soldering.

SETTING VALVE OUTLET TEMPERATURE:

The Taco Series 5120 Mixing Valve is supplied factory set

to 120°F with 150°F hot water inlet temperature. It may

need to be altered depending on operating requirements.

1. Remove the green cap by inserting a small screwdriver

in the notch and gently prying up. (See Figure 1.)

2. Turn both the hot and cold water supplies on. Open an

outlet, preferably a sink or basin rather than a shower. To

calibrate, let the water run for 2 minutes and measure

the outlet temperature with a thermometer. Using the

adjustment tool provided to fit over the spindle end,

adjust the spindle counter clockwise to increase tem-

perature and clockwise to decrease temperature. (See

Figure 2.)

3. Once the desired outlet temperature has been achieved

replace the cap over the spindle and snap it onto the

body.

Figure 1

Figure 2

HOT

COLD

MIX

COLD WATER LOOP

FLOW REGULATOR

12" RECOMMENDED

HOT

TYPICAL DOMESTIC WATER INSTALLATION:

Summary of content (2 pages)

PAGE 1
Instruction Sheet 102-413 5120 Mixing Valve SUPERSEDES: New EFFECTIVE: June 1, 2010 Plant I.D. 001-3948 GENERAL: • All installations should be carried out by a Licensed Professional. • Ensure compatibility of valve installation, e.g. temperature of hot water, inlet pressure, and flow rates - refer to specification section. • Install in accordance with markings on valve body, i.e. hot water inlet - marked “H”, cold water inlet - marked “C” and mixed outlet - marked with directional arrow.
PAGE 2
SPECIFICATION: Hot Water Inlet Temperature: 140 - 210°F (60 - 100°C) Cold Water Inlet Temperature: 39 - 80°F (4 - 27°C) Maximum Working Pressure: 200 psi Minimum Flow Rate: 1 GPM Outlet Water Temperature Range: 95 - 131°F (35 - 55°C) Minimum Temperature Differential (between hot supply and outlet): 27°F (15°C) Allowable Supply Pressure Variation: ±10% The Taco Series 5120 Mixing Valve maintains a constant outlet temperature to ±5°F given limited variations of water inlet temperature and pressures.