Taco Comfort Solutions 5000-3 Series Instruction Sheet

5000-3 Series Lead Free (≤ .25% Pb) Mixing Valve
A Taco Family Company
SUPERSEDES: AUGUST 1, 2013
Plant I.D. 001-4170
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 to verify the
final water temperature. The thermostatic strip provided must not be used for final water temperature verification.
WARNING: The 5000 Series must not be installed on steam systems (water systems only).
WARNING: 5000 Series mixing valves are certified to ASSE 1017 and 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.
GENERAL:
The Taco 5000-3 Series is listed for ASSE 1017 applications.
• All installations should be carried out by a Licensed Professional. Failure to comply with all aspects of these instructions
• NOTE: Non-union NPT valve does not have check valves.
may result in unsafe performance. All installations must comply with relevant State and Local codes or authorities.
• Ensure compatibility of valve installation, e.g. temperature of hot water, inlet pressure, flow rates, etc. - refer to product
Specifications. If the site conditions are outside of the specifications for the valve, the site conditions must be corrected
or a valve that meets the conditions must be selected.
• 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.
• During startup ensure that the valve is set to the desired temperature (valve preset at 105-115°F (41-46°C) with 150°F
(66°C) hot water inlet temperature). If the valve temperature needs to be adjusted please refer to the instructions below

(SETTING VALVE OUTLET TEMPERATURE).

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.

FITTING VALVE TO PIPING SYSTEM:

• Flush all piping thoroughly before installing the valve (using water only). Not flushing the system properly is the most
common cause of improper valve performance.
• Union valves come complete with union type connections for ease of installation and service. Non-union versions have
NPT threads built into the body.
• Valve must be removed from the piping prior to soldering the end connections. It is recommended to use a spacer piece
while soldering.
• For models using the temperature gauge and adaptor on the mixed outlet, attach the adaptor to the mixing valve body, insert
the temperature gauge into the adaptor well and then attach the valve union connection to the adaptor.
SETTING VALVE OUTLET TEMPERATURE:
The Taco Series 5000-3 Mixing Valve is supplied factory set at 105-115°F with 150°F hot water inlet temper-
ature. It may need to be altered depending on operating requirements.
1. Remove the green knob 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 an accurate
thermometer. Use the inset on the top of the cover provided to fit over the adjustment screw, adjust the
knob counterclockwise to increase temperature and clockwise to decrease temperature. (See Figure 2)
3. Once the desired outlet temperature has been achieved refit the knob so that it snaps onto the body.
This helps to prevent tempering with the set temperature.
4. A temperature strip is provided with each mixing valve and can be used as a reference to set the tem-
perature, however a more accurate device should be used to ensure a correct temperature setting.
Instruction Sheet
102-488
EFFECTIVE: OCTOBER 24, 2016