Master Valve only on specific zones

I think I understand what you are saying. So the wire coming from the “Master valve” is connected to one side of the pole, with the other side of the pole in the 24 vac connector on my gen3. My confusion though is, what serves as the common then for the master? When the relay is activated by power from 7, does it just go to the common on the coil?

@noahdare - the common for the “master valve” will still be the C terminal on the Rachio, where it is currently connected.

So zone 7 fires both the solenoid for zone 7 and the SPST relay they will both return through the C terminal. When the SPST relay closes (I should point out the relay should be Normally Open - NO) the current from the 24 VAC + will flow out to the “master valve” and then back via the C(ommon) terminal.

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duh. I wasn’t thinking that through completely, obviously. Thanks for clearing that part up. Ordered the relays and am going to give it a shot.

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Spent Sunday afternoon getting things hooked up and it works great. Thanks for the help DLane. Went with the Packard relays, they do have quite a noticeable buzz when they are active. But they are in the garage and in an enclosure so it isn’t too bad.

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Is this still in the backlog? I need to disable my pump on a few of my zones, it would be nice to not have to build a relay system to do it.

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So here we are almost 6 years since the first post in this thread and still no option for the master pump on for specific zones.

Let me ask for some help from this crew as it looks like I am going to have to go the relay switch route this year. I need help understanding how to wire what I am looking to do so let me summarize.

I have an injector pump that injects rid o’ rust into the sprinkler system. Currently this works on the Rachio by setting the injector pump to turn on via the master pump valve connection. However, this makes the injector pump turn on and use rid o’ rust for EVERY zone I have any time I turn the sprinklers on. Rid o’ rust is not cheap and I only want the injector pump to send rid o’ rust to a few zones that spray over walkways and fences - not all my zones.
For example…I would like to have the injector pump with rid o’ rust turn on and be in use for zones 1, 2, 3, 4, 9, 11 and off for all the rest.

Could someone on here walk me through the exact solutions I need to buy and wiring so that the injector pump only turns on for the zones I need it for and is off for zones I do not need it for?

Thanks!

P.S. Unless @franz has it working in software about to be released…

As I currently need to activate a Master Valve when operating specific zones only, (Gen 2) I was pleased to read that, as a requested feature, it was well on the way to being implemented.

Quote:
@jstew4880‌ @peacock‌ Definitely plan on doing this, fortunately ‘master valve by zone’ is just a software change.

As the work on this, presumably easy coding, began in 2014, I was wondering how the work was coming along. It seems this development cycle is a bit long.

Thanks, Bob

Not that easy just due to all the people we would need to bring in (firmware, mobile, cloud) to modify this, regression testing, firmware rollouts, etc.

Unfortunately not on the current roadmap as other priorities are ahead of this. I will definitely forward your request to our product team.

Thanks and have a great day!

:cheers:

Bob

OpenSprinkler is able to do what you’re looking for natively but requires a bit more configuration.

I’m also a bit surprised this is still not a native feature. I had to jury rig this with a relay as described above (a bit odd for a $200+ controller). If they haven’t done it yet probably won’t happen…

I eventually brought a separate water supply to another valve box eliminating the need for the relay and just tied in the zones directly.

As a product manager, I will say I am concerned focus has turned more towards subscription based add-ons vs core product, the market seems saturated already with Sunday, Wondercide and so on.

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Hi @franz

I’ve been quietly waiting for this for a LONG time. I don’t need to run a pump for all of my zones. So, whenever I’m running these zones, the pump is running needlessly. We’ve been asking for 8 years now.

Pretty please!?

So, I have decided to go the relay route for this. I only have a single zone that doesn’t need the Master valve. So, that simplifies things for me a bit. (It’s actually my swimming pool pump that I’m controlling. But, don’t tell Rachio that :wink: )

While searching for an appropriate relay, I came across the PAM-1. From what I can tell, It looks like it’s used for all sorts of switching needs in multiple industries. Anyway, it’s just what we need for this. It’s inexpensive. It’s all encapsulated and sealed up and ready for use in a wet environment. I just wired it in quick and dirty at the valves. Here’s a quick diagram of how I did it. Basically, the relay breaks the Common connection to the MV when the “No MV needed” zone is active.

pam1b
pam1

Looking at the label, I see maybe contradictory information. The text only talks about 24VDC and the graphic shows 24VDC/VAC. Off hand, your drawing does not quite look right to me, but I would have to look more into it. How many watts/amps does the swimming pool pump use?

It works just fine.

Using the relay’s Red wire, the coil can operate AC or DC @ 24v. Read the “operating voltage” line in the pic again.

I guess that I sort of generalized the PUMP / MV connection. In my setup, there’s a simple Hunter 1" valve that’s being used there.

An Orbit pump start relay is what is what is actually doing the switching for the 240V pool pump. haven’t checked on what it draws. But, It has worked correctly and reliably for 3-4 years now.

My goal here was to avoid pressurizing the sprinkler valve manifold while the pool was running. Which is anywhere between six to eight hours a day. So, when the pump is switched on (green wire in this diagram), it triggers the PAM-1 relay, which breaks the master valve’s connection to the Common wire. One could also have it wired to break the P/MV wire connection instead. Same result.

I’m sure that it would be very handy for lots of other uses as well. Being that It’s an all sealed up unit; I just thought that this PAM-1 relay is a fantastic choice for this sort of thing and wanted to share.

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Agreed, And even support multiple pumps. My 16 valve controller sends wires out to 3 different regions of the property with valve boxes at each region. Only some are so far away to need a pressure booster pump and would be nice to have it run only when those stations are on.

A solution for the present would be to use individual relays for each zone, using the zone power for the relay, and the relay then used to enable and disable pump powe

After reading through this thread I find this completely ridiculous that Rachio can’t implement a simple function/feature. This really is simple (or it should be). It was even stated as such way back in the beginning.

I share everyone’s frustration with not having this be a standard feature, but since it doesn’t seem like Rachio plans to add this anytime soon I wanted to share a possible workaround. I have a system that pumps rust inhibitor into the irrigation system to prevent rust stains, and I only need it to run for zones that hit my house or driveway (all others just waste the chemical). I used an 8 channel relay module to complete the master valve circuit only for the desired zones ($38 on Amazon):

Good BNTai 8 Channel Interface Relay Module 12VACDC 24VACDC 110VAC 230VAC DIN Rail Panel Mount Automation PLC Board (8Channel ACDC24V) https://a.co/d/eIXgtS8

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Great solution, though there is a cleaner way to implement a similar solution by disabling the signal for zones that do not need rust removal, rather than enabling it for all those which do.

Here is a setup I helped create for a fellow member @aristobrat
mockup

In this case we used a 4 channel relay (amazon), but it can be used with the one you’ve bought.

He’s been using it for years.


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So almost a full decade and still no software update for such a basic function? I applaud the ingenuity of those putting together workarounds. It shouldn’t be necessary on a basic controller let alone a “premium” product.

I will just add to the vote that the master valve by zone option be added asap. Looks like I will have to turn it on whenever a zone is turned on regardless of whether needed or not which is not optimal. The controller I have on the wall right now has this option. Debating if I need to return the Rachio I haven’t installed yet or give it a try and see what happens.

Any update on when the ability to use or not use the master valve by zone will be. Seems many are asking for it, including me, and lots of workarounds are being created. Would be wonderful to have this option.

Thanks in advance.