Taco 5000-2 User manual

Instruction Sheet
Model 5000-2 Mixing Valve
102-080
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 spec-
ification 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 Model 5000-2 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 130°F). If the valve temperature
needs to be adjusted please refer to the instructions below.
FITTING VALVE TO PIPEWORK
• Flush all pipework 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 pipework prior to soldering the end connections. It is recommended to use a spacer
piece while soldering.
SETTING VALVE OUTLET TEMPERATURE
The Taco Model 5000-2 Mixing Valve is supplied factory set and locked to a nominal 130°F. 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 Fig. 1)
2. Turn both the hot and cold water supplies on. Open an outlet, preferably a sink or basin rather than a shower. To cali-
brate, let the water run for 2 minutes and measure the outlet temperature with a thermometer. Using the groove on
the top of the cover provided to fit over the adjustment nut, adjust the knob counter clockwise to increase temperature
and clockwise to decrease temperature. (See Fig. 2)
3. Once the desired outlet temperature has been achieved refit the top knob so that it snaps onto the body.
SUPERSEDES: 102-080 dated March 1, 2006 EFFECTIVE: June 1, 2006
Counter Clockwise
(Increase Temperature)
Clockwise
(Decrease Temperature)
Fig. 1
Fig. 2
Primary/Secondary Installation
Typical Domestic Water Installation
Low Temperatureor Radiant Installation
Boiler
Cold
Hot
Mix
Radiant
Loop
Hot
Cold
Cold
Hot
Mix
Cold Water
Loop
Flow
Regulator
12"
Recommended
Boiler
6 Pipe
Diameter Max
Mix
Radiant
Loop

DOITONCE. DOITRIGHT.™
TACO, INC., 1160 Cranston Street, Cranston, RI 02920 Telephone: [phone] FAX: [phone].
TACO (Canada), Ltd., 6180 Ordan Drive, Mississauga, Ontario L5T 2B3. Telephone: [phone]. FAX: [phone].
Visit our web site at: http://www.taco-hvac.com
Printed in USA
Copyright 2006
TACO, Inc.
Taco, Inc. will repair or replace without charge
(at the company’s option) any product or part
which is proven defective under normal use
within one (1) year from the date of start-up or
one (1) year and six (6) months from date of
shipment (whichever occurs first).
In order to obtain service under this warranty, it
is the responsibility of the purchaser to promptly
notify the local Taco stocking distributor or Taco
in writing and promptly deliver the subject
product or part, delivery prepaid, to the stock-
ing distributor. For assistance on warranty
returns, the purchaser may either contact the
local Taco stocking distributor or Taco. If the
subject product or part contains no defect as
covered in this warranty, the purchaser will be
billed for parts and labor charges in effect at
time of factory examination and repair.
Any Taco product or part not installed or operat-
ed in conformity with Taco instructions or which
has been subject to misuse, misapplication, the
addition of petroleum-based fluids or certain
chemical additives to the systems, or other
abuse, will not be covered by this warranty.
If in doubt as to whether a particular substance
is suitable for use with a Taco product or part, or
for any application restrictions, consult the
applicable Taco instruction sheets or contact
Taco at [401-942-8000].
Taco reserves the right to provide replacement
products and parts which are substantially similar
in design and functionally equivalent to the
defective product or part. Taco reserves the right
to make changes in details of design, construc-
tion, or arrangement of materials of its products
without notification.
TACO OFFERS THIS WARRANTY IN LIEU OF
ALL OTHER EXPRESS WARRANTIES. ANY
WARRANTY IMPLIED BY LAW INCLUDING
WARRANTIES OF MERCHANTABILITY OR
FITNESS IS IN EFFECT ONLY FOR THE DURA-
TION OF THE EXPRESS WARRANTY SET
FORTH IN THE FIRST PARAGRAPH ABOVE.
THE ABOVE WARRANTIES ARE IN LIEU OF
ALL OTHER WARRANTIES, EXPRESS OR
STATUTORY, OR ANY OTHER WARRANTY
OBLIGATION ON THE PART OF TACO.
TACO WILL NOT BE LIABLE FOR ANY SPE-
CIAL, INCIDENTAL, INDIRECT OR CONSE-
QUENTIAL DAMAGES RESULTING FROM THE
USE OF ITS PRODUCTS OR ANY INCIDENTAL
COSTS OF REMOVING OR REPLACING
DEFECTIVE PRODUCTS.
This warranty gives the purchaser specific
rights, and the purchaser may have other rights
which vary from state to state. Some states do
not allow limitations on how long an implied
warranty lasts or on the exclusion of incidental
or consequential damages, so these limitations
or exclusions may not apply to you.
LIMITED WARRANTY STATEMENT
SPECIFICATION
Max. Hot Water Inlet Temperature: 210°F Outlet Water Temperature Range: 85°F – 150°F
Min. Cold Water Inlet Temperature: 39°F Min. Temperature Differential
Inlet Pressure: 200 psi maximum (between hot supply and outlet): 20°F
The Taco Model 5000-2 Mixing Valve maintains a constant outlet temperature to +/- 5° given limited variations of water inlet
temperature and pressures. Note: At low flow operation, the outlet temperature may vary slightly more.
Differential pressure at the valve inlet should be within a 5 to 1 ratio under normal flow conditions. Inline fittings, pipework
layout and sizing must be taken into consideration. In applications where hot water thermal syphonage is a concern the
valve should be “trapped”, installing the valve below the cold water inlet to the heater. In installations where the valve is
supplied with unbalanced hot and cold pressures greater than a 5 to 1 ratio please consult the factory.
CAUTION: The Taco Model 5000-2 Mixing Valve is certified to ASSE 1017. It is not to be used to provide “anti-chill”
or “anti-scald” service. Taco Tempering Valves are not designed to compensate for system pressure fluctuations
and should not be used where more sophisticated pressure compensating temperature controls are required.
MAINTENANCE
The Taco Model 5000-2 Mixing Valve does not require routine maintenance but should be checked annually. Replacement
element assemblies are available.
O-RING/PISTON SUB-ASSEMBLY REPLACEMENT
1. Isolate the valve from the water supply.
2. Unscrew the Union Nuts and remove the Valve Body from the system.
3. Using a screw driver, pry the Cover from the valve.
4. Secure the valve Body (using the flats on the body) and unscrew the brass Cap to remove the internals of the valve.
5. From the outlet port, push the Spring and the Piston assembly out of the top of the valve.
6. Clean the valve body paying particular attention to the flat sealing face half way down the inside of the valve body and
the O-Ring sealing face immediately above it.
7. Remove the old Piston/Element Assembly and O-Ring from the Cap. Lightly grease the new O-Rings with the Grease
Packet provided, and fit the O-Rings onto the internals.
8. Assemble in the reverse order.
9. When re-fitting the brass Cap do not over tighten, as this is an O-Ring seal.
10.Reinstall the valve into the piping arrangement using the union fittings and set the outlet mix temperature as indicated
above in SETTING THE OUTLET TEMPERATURE.
001-3879 ValveMade inAustraliaI0466 Rev. B