This is a picture of the existing wiring from RD-1200. I’m stumped on the mapping of the two white wires into EARTH GROUND. Thank you!
Just to double check some things, I took a look at the manual at 373-0538V_d.ashx (toro.com)
I do not think you will connect the Earth Ground. I believe that is normally used just to ground out the box and electronics when the transformer is inside the housing.
It looks like you have an easy conversion. Just for others’ information if they need to go the same thing (it sounds like you have it figured out):
Top row, left-to-right:
- Earth Ground → do not connect
- Zone 7-12 → Zone 7-12
- VC (valve common) → C
- 24VAC → do not connect, instead use Rachio supply power adapter
Bottom row, left-to-right:
- Zone 1-6 → Zone 1-6
- MV/Pump → M (configure in app)
- Sensor → it seems usually, people do not connect. Can always change mind later
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Thanks. As you can see from the picture of the legacy controller wiring, VC (valve common) has no wire going in on the legacy controller. The same with MV/Pump - it’s bare.
This will leave only Zone 1-11 wires mapping to Rachio, with no wire to C, and no wire to M. Will this work?
I noticed most of the empty terminals (including the sensor terminals do not exist on that model. I did, however, miss that the VC did not have any wires going to it. I would have to guess that someone actually hooked the VC to Earth Ground for some reason. With all that, I would guess that the two wires going to Earth Ground should have been hooked to VC, so they would be put on Rachio’s ‘C’. If your model has multiple C, it does not matter which they get hooked to. So, hook one to a convenient ‘C’ and the other to another ‘C’. I believe the one of the white wires is the C for all the smaller colored wires and the other might be for the thicker red wires. You can always double check by hooking up one wire and running each zone to see what comes on. If any of the zones do not come on, hook the other one up and run each zone again. Sorry for missing that in the picture.
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Cool. Will try that. Thank you!
No problem, please let us know how it goes
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Hi @Thomas_Lerman or other experts, Thanks for sharing your knowledge here. I am posting my RD 1200 image. Can you please suggest? What I understand from suggestions:
Top row, left-to-right:
- Earth Ground → Nothing to be done
- Zone 7-12 → Zone 7-12: Question: I have multiples wires going in 10 and 11. Do I put them in the same order in Rachio zone terminals? i.e. Two wires from RD terminal 10 to go to Rachio terminal 10. And the same with the 11 terminal?
- VC (valve common) → C: Question: There are three wires in VC. Can I put them in three separate C terminals of Rachio 3 controller?
- 24VAC → do not connect, instead use Rachio supply power adapter
Bottom row, left-to-right:
- Zone 1-6 → Zone 1-6
- MV/Pump → M (configure in app): Question: I dont have any wires in MV. Not super clear in the picture. Is this some configuration in the App?
- Sensor → it seems usually, people do not connect. Can always change mind later.
Also I am assuming that I should be switching off the RD power supply before removing the wires.
Your help will be much appreciated!
Thank you,
Ashish
- Earth Ground: Correct, nothing to connect
- 1-12 comes straight across unless you want to reorder anything. As to the multiple wires on 10 & 11, I would say it depends on the number of zones on Rachio. If you have 16 and do not need extra, I would personally separate them. If you have 12, probably leave them the same as long as the zones work well with pressure.
- VC: I personally have my C wires on different connections on my Rachio. They really are the same connection other than separated seems to me to be a better connect
- 24VAC: Correct, use supplied power
- MV/Pump: You are correct that if you have a MV/P on the old system, you would bring it over and configure for it, Since you do not, you have nothing to do here.
- Sensor: Do you actually have one on your old system? From what I can see, it looks like you do not (but just have the jumper in place). If not, nothing to do. If you do, I would suggest getting it working without it. As you said, you could always change you mind? Generally speaking, the weather intelligence would great in my opinion and a sensor have some shortfalls.
Before removing and wires, I would suggest making sure all zones work as expected and maybe even map it out if you can. Next disconnect power, label wires, then bring over the wires.
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Thanks a bunch @Thomas_Lerman ! Much appreciated. I will be doing this today and will update the results. Question - Thanks for the suggestion - “even map it out if you can”. Do you have a template of a wires to zone map or something like that? If there is a standardized template then I would rather follow that. If not then no worries. I will put something together. Also you are correct. I have a jumper on the sensor.
Thanks again!
@ashish1310 - I think what @Thomas_Lerman was referring to in the “even map it out if you can” comment is to find the survey of the property (or similar) and draw on it which zones cover what area.
It looks like to me zone 9’s wire is loose and resting on the terminal for zone 10 as I didn’t see a wire on zone 9’s terminal.
The jumper on the sensor is just to shunt it out of the system. If you have a rain sensor somewhere on the property, then I think they ran the common wire through the rain sensor (common in older installations). If so, I’d recommend wire-nutting the rain sensor wires together to bypass the sensor and then either ignore the sensor or wire it directly into the Rachio.
Welcome to the community.
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I personally did my map in Google Earth
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@DLane : Thank you! We dont have a rain sensor. So we should be golden there. I double checked. Zone 9 is indeed empty and Zone 10 has two wires.
Thanks again for your guidance.
Thanks @Thomas_Lerman !