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Updating a 24V sprinkler controller

Discussion in 'Landscape Architecture and Design' started by Homie, Apr 16, 2001.

  1. Homie

    Homie LawnSite Member
    Messages: 15

    I am a homeowner, and the house I just bought has an old controller (may be a historical item) that I understand is 24 volts. It is now fully manual, as the automatic features no longer work. I would like to update it with a new controller.

    What is involved in changing from 24V to 12V systems?

    Is there a lawn sprinkling forum out there that may have specialists in that area?

  2. greens1

    greens1 LawnSite Senior Member
    Messages: 352

    Modern irrigation systems are 24 VAC. There is nothing wrong with an older mechanical controller. Sometimes they just blow a fuse and you need to replace it. I would get it cheaked out before running out to buy a new one. Unless you have a low volume system, which requires varied and often multiple starts. I would reccomend a mechanical controller, they tend to have fewer problems than their electronic counterparts.
    Good Luck,
    Jim L
  3. gusbuster

    gusbuster LawnSite Bronze Member
    Messages: 1,931

    As Jim said, All modern timers are 24 Vac just like your old one. This is a job that would be pretty easy since you have all your wireing already in place. It's just a matter of swapping the clock. I would guess since it's a mechenical type, you only need a single program timer. A dual progam type timer would be needed for example, you want to run your lawn irrigation on a Mon, Wed Frid, type schedual and your drip irrigation on a tues, Thur, Sat. schedual. Home Depot carries a simple electronic timer (WaterMaster) that I use in my home installations for around $25. I wouldn't get a fancier timer than you need. There are so many out there to choose from. Some Brand names that I would consider: Toro, RainBird, Irritrol, Hardie are just a few brands to mention. Just keep it simple.

    I do like electronic timers vs. mechanical. Simple reason is electronic timers tend to be more accurate than mechanical timers.

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