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Taco ZVC405 timer addition

I would like to add a timer to my ZVC405 controller. Can someone tell me if this is possible and where to begin? Thanks!

Comments

  • Sam81Sam81 Posts: 34Member
    What would u like to control
  • This is one way I would do it.


    Often wrong, never in doubt.

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  • HVACNUTHVACNUT Posts: 2,559Member
    You're looking for a time delay? For what purpose?
    Are you looking to delay the opening of the zone valves, or delay the burner or gas valve from energizing?
  • He may want it installed in a commercial or multi-residential building where he can't prevent the occupants from messing with the thermostats.
    Often wrong, never in doubt.

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  • swongmanswongman Posts: 5Member
    Hi Guys, I want just want to add time control to the zone valves.
  • STEVEusaPASTEVEusaPA Posts: 3,345Member
    swongman said:

    Hi Guys, I want just want to add time control to the zone valves.

    I think what we're getting at is "Why"?
    What are you trying to accomplish so we can give you the best answer?
    steve
  • swongmanswongman Posts: 5Member
    Thanks, guys.
    If we leave our tile floors in the master bath on, the master suite heats up too much. We really just want warm floors in the morning. This is a California house, so the "cold" is not so extreme. Here is our system.


  • delta Tdelta T Posts: 785Member
    Does the bathroom floor have its own thermostat? I would just replace the thermostat with a programmable one and use that as your timer.
  • hot_rodhot_rod Posts: 11,862Member
    I agree a programable t-stat may be ideal, especially if you can get a sensor into, or below the floor. Then a not to exceed, not to fall below, daily programability and a timer function could all be in one control.

    Most all the new smart stats could handle this, Ecobee for example.

    If you use spring wound timer they are somewhat noisy, a solid state would need power to operate.
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    The magic is in hydronics, and hydronics is in me
  • WellnessWellness Posts: 80Member
    I second @hot_rod. But if you insist on installing a timer, I recommend the EMX DTM-9. They are a little pricey but easy to program. You can watch a youtube video on it here:
  • swongmanswongman Posts: 5Member
    edited September 19
    Thanks for all the info, this is great!

    From Hot Rod - "I agree a programable t-stat may be ideal, especially if you can get a sensor into, or below the floor. Then a not to exceed, not to fall below, daily programability and a timer function could all be in one control."

    We have Viega digital thermostat controls on the wall with three wires. The EMX DTM-9 suggested by Wellness looks cool, but we don't want just a timer. Am I missing something? Why can't I just replace our Viega 18050 ProRadiant Digital Thermostat with a timer thermostat? Is there something special about it radiant systems that I cannot use something like a Honeywell 7-day programmable unit?

  • swongmanswongman Posts: 5Member
    Well, we don't want just a timer, but a timer thermostat. Am I missing something?Why can't I just replace our Viega 18050 ProRadiant Digital Thermostat with one that can like a Honeywell 7-day programmable unit?
  • HVACNUTHVACNUT Posts: 2,559Member
    The Honeywell Prestige TH9320. Don't do WiFi. I dont know what you said but this should do it.
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