Does this work for you? Two DPDT relays, when one is activated the other is blocked out.
View attachment 203157When the remote switch is activated the manual switch can not change the status of the relays. When the manual switch is activated then the remote switch can not change the status of the relays. The other set of contacts can control whatever you're switching.
That was my first impression. However, questioning what sort of functioning wasn't completely answered. But from what I thought was being said it sounded more like the circuit posted in #24The requirements state that if the “manual control” is operated, then the “remote control” is disabled. And if the remote control is operated, the other control is disabled.
Sorry, I should have explained it better in the first place. Anyway, I think I found the solution I was looking for. Please see attached.That was my first impression. However, questioning what sort of functioning wasn't completely answered. But from what I thought was being said it sounded more like the circuit posted in #24
Yeah, those switches are still there. But, different configuration.TC = Temp Controller
CW = Cold Water
Assuming V1, V2 & V3 are all live (24V)
TC1 & CW Inlet are ON when V1 Switch (unidentified) is active.
TC2 is ON when V3 Switch (unidentified) is active.
TC1, TC2 & CW Inlet are ON when V2 Switch (unidentified) and relay is active.
We now have another switch and one less relay. The operation of this circuit is nothing like what has been described throughout most of this thread. And we don't know which is a manual switch and which is a remote controlled switch. But as you say - you believe you found the solution you were looking for.
Actually I was not trying to correct you in a bad way. No it is not semantics or about semantics. The thread starter called it out earlier as chilled water and that is an accepted industry term and frequently used. People who have worked with and around "chillers" and heat exchangers use the term daily. In this case the chilled water supply ranges between 3 ~ 7 degrees C. Anyway I was not playing a game of semantics but trying to use a correct industry term. Sorry if you took it out of context. This is an example of a large "chiller" for making chilled water in an industrial setting. You see terms like CWS meaning Chilled Water Supply or CWR Chilled Water Return on pipe lagging.Cold water, chilled water - - - semantics.
No, wasn't being retentive, not on purpose anyway. Yeah, we had a reclaim water tower and a few others which fortunately never took a lightening hit. We had to steam heat the water in the NE Ohio winters when we could get sub zero F. Fortunately we eventually hired a facilities engineer which was a happy day in my life. Took awhile of working with him but it went well. Facilities was not only not my forte but I had enough headaches. Yeah, you guys in Texas get some severe micro-burst. Weird stuff and I remember Delta lost a plane going into DFW due to a micro-burst. I have felt that static you mention just before a lightening strike, scares the hell out of me.Wasn't offended. Just got the impression you were being retentive. Some people have to correct everything (not saying that's you).
Back in Texas we had a big chiller tower that got struck by lightning. I remember the sound of static discharge BEFORE the flash of lightning. Then an instant and a half later the thunderous boom. Later that same day we watched the rain fall horizontally, wind whipping across the containers in the yard. Was amazed they didn't blow over. Bigger than Tractor Trailer rigs. Still surprised the wind didn't move them. Cars were moved all over the place. Lots of damage. I was parked in a protected area. Lucky me. No reports of a tornado, but that was one hell of a micro-burst (downdraft).
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by Luke James