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Zone Valve
clutch
Member Posts: 3
Can I hook up a end switch on a zone valve to run 2 relays
0
Comments
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Yes and No
You may need to have a single pole double throw relay to isolate the relays you are operating.
Edward Young Retired
After you make that expensive repair and you still have the same problem, What will you check next?
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Once the end switch pulls in both relays, the coil resistance of the relay may be enough to create a holding circuit that will not allow the other relay to disengage when the end switch opens. (or both relays could get the transformers fried by making 48 volts)
EDIT:
It would be best to isolate the relays. Especially if the relays are operated by different transformers End switch to pull in theSPDTDPST relay and the separate poles of theSPDTDPST relay operate the final relays without cross-connecting the wiring or
Need a diagram? Let me know the model number of the relays you want to operate and I'll see what I can come up with.Edward Young Retired
After you make that expensive repair and you still have the same problem, What will you check next?
1 -
May need or do need?0
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Thank you0
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depends on the application.clutch said:May need or do need?
Edward Young Retired
After you make that expensive repair and you still have the same problem, What will you check next?
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Also what is the power source? Can it handle the contact ratings?0
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The end switch is just that: a switch. It won't power anything. What it will do is complete a circuit from an appropriate power source through your relay -- or relays -- to energize them. Then, of course, you can do pretty much what you want with the relays.Br. Jamie, osb
Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England0 -
Most zone valve switches are rated for 120V, a 1A. As long as the "loads" your are switching are powered by the same circuit you should be fine.
I think Ed means a single throw, double pole relay that would isolate two different circuits or load, as an on/ off function. And depending on the isolation relay it could have a higher current rating than the end switch.
We need to know more about what you are trying to control or switch.Bob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream0 -
Thanks for catching my error @hot_rod. That was a case of "Do
What I Mean, Not What I Say"
Here is an example of what I mean
Isolation DPST relay isolates the ZV end switch from the transformers on the individual transformers of the 2 "object" relays Illustrated by 3 different color circuits.
Although I can't see a practical use for this particular diagram
Still interested to know what @clutch's application is!!!
Edward Young Retired
After you make that expensive repair and you still have the same problem, What will you check next?
1
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