4 Zone Valve Control Module with Priority - Expandable Zoom
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4 Zone Valve Control Module with Priority - Expandable

SKU:ZVC404-EXP-4

Brand: Taco

Taco
Qty Price
$167.95
/ each
$325.70 / box (2 units x $162.85)
In Stock! Ships in 24-48 Hours
(26 Available)
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Specs

Zones:
?
4
Application: Zoning
Width: 11-3/4"
Height: 7-1/2"
Voltage:
?
120v
Depth (Inches): 3"
Wiring: PC Board

Description for Taco ZVC404-EXP-4

Taco Zone Valve Controls work with two-, three-, or four-wire zone valves. Fully fuse protected, they also include two isolated end switches and a built-in priority switch. The contractor friendly PC board layout eliminates the problems caused by incorrect wiring and the "unfinished" look of conventional zone valve installations. The sturdy screw connections add additional reliability, while the external indicator lights provide instant diagnostic feedback, reducing installation time. All Taco Zone Valve Controls are UL and CSA listed and carry an extended 3 year warranty.

Whether you want to expand up to 20 zones or utilize the advanced features of the PowerPort Cards and Add-on Power Controls, Taco -EXP controls allow for simple integration of advanced features. Plug-in any combination of cards and controls to optimize the operation of any system.

Features:

  • External Indicator Lights
  • Switchable Priority
  • Simplified Wiring
  • Works with 2, 3, or 4-Wire Zone Valves
  • Compact Design
  • Fuse Protected
  • 100% Factory Tested
  • Two Isolated End Switches
  • Extra Set of Dry Contacts
  • Contractor Friendly
  • PC Board Layout
  • Universal Thermostat Compatibility
  • UL and CSA Approved
  • Sturdy Screw Connections
  • Extended 3 Year Warranty
  • Made in the USA
Additional -EXP Features:
  • Two Plug-In PowerPort Card Slots
  • One Add-On Power Control Plug
  • Expandable to 20 Zones
  • Interface with -EXP Switching Relays

4 Zone Valve Control Module with Priority - Expandable

REVIEW SNAPSHOT®

by PowerReviews
Taco6 Zone Valve Control Module with Priority - Expandable
 
5.0

(based on 4 reviews)

Ratings Distribution

  • 5 Stars

     

    (4)

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100%

of respondents would recommend this to a friend.

Reviewed by 4 customers

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Displaying reviews 1-4

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5.0

Controller shows what zone is calling fo

By TJ Repairman

from Pagosa Springs, CO

Verified Buyer

Comments about 4 Zone Valve Control Module with Priority:

It is very easy to wire the zone valves and thermostats to the control module. It is a little trickier wiring the module to your pumps and boiler.

 
5.0

This is a great zone valve control

By vonson

from Provo, UT

Verified Buyer

Comments about 4 Zone Valve Control Module with Priority:

I installed this for a hydronic radiant heat system, and everything has worked fully to spec, it has useful LED's, and is expandable for when I expand to 4 more zones. The size is compact enough to fit in most places.

 
5.0

great

By Sammy

from Lake George, CO

Verified Buyer

Comments about 4 Zone Valve Control Module with Priority:

New construction.
Great service.
Fast shipping.

 
5.0

Neat and Tidy

By Brad

from Newton, MA

Verified Reviewer

Comments about 4 Zone Valve Control Module with Priority:

I purchased a 4-zone relay to consolidate several pump zones onto a common variable-speed circulator. Not a lot one can add to what is said about these ubiquitous Taco controls; they are as advertised and make your wiring jobs neater. Let me re-phrase. You can always do a sloppy wiring job no matter what controls you use. The Taco line removes your bad excuses. :)

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Q&A: Ask the Questions, share answers

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10 Questions | 11 Answers
Displaying questions 1-10
  • 4 Zone Valve Control Module with Priority

    Q:

    Does the ZVC406-EXP include the 2 necessary 24V transformers?
    Asked on 9/29/2013 by Von from Provo, UT

    1 answer

    • CUSTOMER CARE

      A:

      Yes, the transformers are a standard feature and included in all ZVC models.

      Answered on 9/30/2013 by PexSupply Staff from NY
  • 6 Zone Valve Control Module with Priority

    Q:

    Will this unit work with Uponor (Wirsbo) 4 wire actuators SKU: A3010522. Will the end switch function work on all 6 zones. Also, I will currently be using three zone actuators but plan to use all six actuators in the future any problems not wiring all 6 for the time being.
    Asked on 6/21/2012 by thumbs

    2 answers

    • VERIFIED BUYER

      A:

      Yes, this is the right unit for the 4 wire actuators. I had a 12 loop
      manifold and 6 zones with 6 thermostats. I grouped several loops
      (actuators) together to work with the 6 zones of the Taco unit. I then
      connected 6 thermostats. I then wired the end switch to the Tekmar 374 Mix
      Demand. When a thermostat would call for heat the end switch would close
      the mix demand as well as the relay for the circulator pump on the manifold
      loop. The 374 took care of the primary loop to maintain the primary loops
      reset temperature, the variable speed mixing pump and read the temperature
      on the secondary loop to adjust the variable speed pump's output.
      So in short yes this should work however do some homework on the rest of
      the system for radiant is not simple but not rocket science. Look at the
      Tekmar product or Taco products for mixing to ensure you are sending the
      right temperatures through the loops off the secondary manifold.

      Answered on 6/22/2012 by TD from Safety Harbor, FL
    • VERIFIED BUYER

      A:

      The Taco 6 Zone control will work with your wirsbo actuators. The yellow wires are your 24 volt feed to the actuator, they go on terminals 1&2 on the selected zone of your choice. The red wires on the actuator are your end switch, they go on terminals 3&4 on the same zone. When there is power to the 6 zone relay the green LED will light. When there is a call for heat from your two wires on the thermostat R&W, the yellow LED will light on that zone. After a short period of time the end switch will make in the actuator, that will make the red LED light to come on the same zone. That will pull in X&X on the control module, those terminals should be wired to the boilers X&X or T&T terminals, depending on the boiler control. Taco has a nice wiring diagram you can follow included. If any zone is calling, that end switch will close and pull in the boiler. It is a set of dry contacts with no power going through them. So one zone can pull in the boiler or all six, it doesn't really matter how many. Now if you are using all 6 zones for wirsbo actuators, do not turn on the priority switch. That is there if you are using the boiler to heat domestic hot water with an external tank. You would wire the zone marked priority to the tank with a Taco zone valve or equal. When the tank calls for heat, like during morning showers it over rides all the other zones so that the boiler gives the tank only its heat to satisfy it. You can wire 3 zones now and 3 zones in the future, the control doesn't care. It is a great control for your job. Good luck

      Answered on 6/22/2012 by Anonymous
  • 6 Zone Valve Control Module with Priority

    Q:

    What is the difference between the ZVC406-EXP-1 and the ZVC406-3, they appear to be the same, only the EXP is more expensive, also can I hook the RMB-1 into one of these to control my infloor heat as one of the zones?
    Asked on 2/1/2012 by Ben

    1 answer

    • CUSTOMER CARE

      A:

      The -EXP control is "expandable," meaning that it can be connected to other -EXP models if you need to add additional zones. It is possible to connect a Radiant Mixing Block to a ZVC.

      Answered on 2/2/2012 by PexSupply Staff from NY
  • 6 Zone Valve Control Module with Priority

    Q:

    I have 6 heating zones plus DHW I need on Priority. What is the best way to "expand" the 6 valve control module to handle all? Is a 4 + 4 better than a 6 + 3 for my need?
    Asked on 10/10/2011 by joshetal from West Chester, PA

    1 answer

    • CUSTOMER CARE

      A:

      Both zone valve controls must be EXP models. We would recommend two ZVC404-EXP units.

      Answered on 10/19/2011 by PexSupply Staff from NY
  • 6 Zone Valve Control Module with Priority

    Q:

    I am going to be connecting this unit to a TACO RMB-1 for a radiant floor system. I do not want to have the RMB-1 control the boiler. How would you suggest I wire the two together? Or should the RMB-1 be the control for the boiler?
    Asked on 9/29/2011 by Anonymous

    1 answer

    • CUSTOMER CARE

      A:

      You would wire the RMB-1 to the boiler as if it were a thermostat. Your boiler control will still control the boiler. The RMB-1, when on, will act as a thermostat would in relation to the boiler.

      Answered on 9/30/2011 by PexSupply Staff from NY
  • 6 Zone Valve Control Module with Priority

    Q:

    can the sr506 control panel b used with 4 circulator pumps and 4 zone vavles plus main boiler pump and indirect water heater pump or do i need a different control panel.
    Asked on 8/5/2011 by tom from boston,ma

    1 answer

    • CUSTOMER CARE

      A:

      No, this unit will control six zones which are zoned by 24-volt zone valves that are supplied by a single circulator.

      Answered on 8/8/2011 by PexSupply Staff from NY
  • 6 Zone Valve Control Module with Priority

    Q:

    i have a 3 baseboard zones and 2 under floor zones with three circ pumps with seperate thermostats which control would be best

    thanks
    william
    Asked on 8/2/2011 by mack from scranton, pa

    1 answer

    • CUSTOMER CARE

      A:

      If you are zoning by pump, you should use a switching relay. This control is for systems zoned by zone valves.

      Answered on 8/5/2011 by PexSupply Staff from NY
  • 4 Zone Valve Control Module with Priority

    Q:

    what is difference between the priority and nonpriority contorl module and what is it used for.
    Asked on 6/22/2011 by tom from bostom,ma

    1 answer

    • CUSTOMER CARE

      A:

      Zone Valve Controls with priority allow domestic hot water (i.e. an indirect water heater) to take precedence over other calls to the boiler.

      Answered on 6/23/2011 by PexSupply Staff from NY
  • 6 Zone Valve Control Module with Priority

    Q:

    with in floor heat will this control 5 circ pumps with thermostats and a priorty pump to an indirect water heater?
    Asked on 6/16/2011 by mikel6227 from erie pa

    1 answer

    • CUSTOMER CARE

      A:

      Taco Zone Valve Controllers can only control systems zoned by zone vales. For your application, you would need part SR506.

      Answered on 6/17/2011 by PexSupply Staff from NY
  • 6 Zone Valve Control Module with Priority

    Q:

    I purchased 2 Tao 6 zone valve ontrol Modules (with Priority) from your company.
    I have 12 thermostates. I have one main circulator and two small circulators to handle two remote rooms. I need the main circulator to turn on anytime any one of the 12 thermostates calls for heat. I need the two small circulators to turn on when a specific thermostat in the remote room calls for heat. My electrician is having difficulty understanding how the wiring for the 3 circulators should be installed. an you help?
    Asked on 10/8/2010 by Tom from Fairfax, Virginia

    1 answer

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