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Re: Help: Blew my transformer and the 120v part of a ZVC
Hello @SENorthEast1895er,
To try to do it with a ZVC may become awkward as you are finding out. You would need a XX for the CH and another independent XX for the DHW to control your boiler, the ZVC does not provide both. I don't know if I would bother to use a ZVC 403-4 for one CH zone.
The ZVC also is used to clean up (or avoid) the mess of wires that multiple CH zone valves and transformers can make, also provide 24 VAC for the zone valves and system status indication.
You maybe able to use the Orange connections for the DHW control. However you still need to have the boiler turn on your only circulator with either a CH and/or DHW call. And this is very atypical, may confuse others in the future.
@109A_5 I was testing off the 120v common (white); should I have been using the 24v common?Well if you are testing on the 24 VAC side of things I would use that common. Since that 24 VAC common may not be bonded to the buildings equipment ground which should be bonded to the 120/240 neutral you were apparently using. So that makes sense why you were not seeing 24 VAC on one side of the fuse.
The relay seems promising, but I’m too inexperienced to figure out the following:The ZVC does have relays in it. However it (in my opinion) does not have the logic or communications to your boiler to work correctly and in concert with your boiler. Your boiler has the means to correctly control the circulator pump(s) as needed with a CH call and/ or a DHW call.
The DHW wires need to go to the boiler to tell it to fire at a higher temp, but they’re also needed at the ZVC/relay to tell it to open a valve/ start a circ.
Honestly, I’m a bit confused about the difference between the ZVC and a relay. Seems like both just connect to the t-stat and tell the circulator to start. The ZVC just adds the ability to control zone valves (and the SR501-EXP-4 adds all sortsa nice features like post-purge, etc)
To try to do it with a ZVC may become awkward as you are finding out. You would need a XX for the CH and another independent XX for the DHW to control your boiler, the ZVC does not provide both. I don't know if I would bother to use a ZVC 403-4 for one CH zone.
The ZVC also is used to clean up (or avoid) the mess of wires that multiple CH zone valves and transformers can make, also provide 24 VAC for the zone valves and system status indication.
You maybe able to use the Orange connections for the DHW control. However you still need to have the boiler turn on your only circulator with either a CH and/or DHW call. And this is very atypical, may confuse others in the future.
109A_5
1
Re: Occupation
Now? Or before I retired 17 years ago? Before I retired, professional (Civil) engineer. A few other things before that. Now? Lay brother of the Order of Saint Benedict.He also likes to name the boilers he has charge of. Like "Cedric". I hear he gets a little steamed up about it!
Re: Meaga press for steam
Very scary. Did i mention I need to replace the radiator in my car because it is leaking between the tank and the core? I'm pretty sure it is because they o-ring has fossilized over the past 22 years.
mattmia2
2
Re: San Francisco steam help
@neilc
with the condition of that poor Smith boiler and the amount they run it I doubt it's worth fixing until the boiler fails. Imagine that boiler all the way from Westfield, MA. But your right.
It just proves that California schools are no better than anywhere else. The installers out there can't read either.
with the condition of that poor Smith boiler and the amount they run it I doubt it's worth fixing until the boiler fails. Imagine that boiler all the way from Westfield, MA. But your right.
It just proves that California schools are no better than anywhere else. The installers out there can't read either.
Re: Asbestos (paper type) behind recessed radiator - who can help?
Also, no our inspector was trash and found nothing, and no it was not disclosed. Sellers sucked too, and hid lots of things.
Re: Why my 85% efficient cast iron boiler is really only 78% efficient
Thanks, Mike. I expect @hot_rod will be back soon to grade my homework!
jesmed1
1
Re: Uponor toilet stop
Try it with 1" and you'll wonder what you were thinking with the manual tool.
ChrisJ
1
Re: Leaking Convector Union
Thankyou @Mad Dog_2 for the expertise that actually solved my problem. Turned out doping the crap out of the union mating surfaces and threads and then killing it tight with a wrench when tightening was the only thing that actually worked. I tried everyone else’s methods…. Much appreciated!
TwoTones
1
Re: To those with more knowledge than myself, would you install a new gas or heating oil system ?
@SweatHog for sure! We may all love hydronics here but Americans don't seem nearly as enthusiastic. Gotta stay aware of what customers actually want.Fancy counter tops, stainless appliances, a shiny new SUV and truck in the driveway and the cheapest HVAC system you can hide in the basement and it doesn't matter if it works poorly as long as it works?
ChrisJ
5
Re: To those with more knowledge than myself, would you install a new gas or heating oil system ?
No.Have you now covered everything you could possibly argue about?
...Never thought I'd be having an argument with someone about the importance of indoor plumbing...
.
ChrisJ
2