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Re: Thread sealant cure
@ChrisJ
I only used it twice (Expando) and I never had to take an Expando apart. They say on Expando website to have 2 people and put some pressure on the joint with a pipe wrench as if to loosen it then have the other guy tap the fitting all the way around with a hammer.
I only used it twice (Expando) and I never had to take an Expando apart. They say on Expando website to have 2 people and put some pressure on the joint with a pipe wrench as if to loosen it then have the other guy tap the fitting all the way around with a hammer.
Re: shut off valves turn but don't work
You can add a mini ball valve before the vent if this is one pipe steam
No air out = no steam in
No air out = no steam in
dko
4
Re: NEST With Two Wires
Hello @MikeAmann,
It may work if done properly and left that way.
The issue I see is the phasing between the NEST transformer and the transformer in the heating equipment. As far as phasing is concerned with the NEST calling for heat, only the R wire is really the only wire joining NEST with the heating equipment, since the W wire is connected to the R wire. And each transformer has its own load.
The issue I see is when the NEST is not calling for heat. If the transformers are out of phase, since the R wire connects the NEST transformer with the heating equipment's transformer there could be 48 Volts between the C wire of the NEST and the W wire of the NEST. The NEST may not like that.
If phased correctly there would be 0 Volts between the C wire of the NEST and the W wire of the NEST. But can you guarantee the phasing between transformers will not be inadvertently changed if someone else works on the system ?
For best practice I would use a relay, since it provides 100 % isolation between the two transformers, then the phasing is not an issue.
It may work if done properly and left that way.
The issue I see is the phasing between the NEST transformer and the transformer in the heating equipment. As far as phasing is concerned with the NEST calling for heat, only the R wire is really the only wire joining NEST with the heating equipment, since the W wire is connected to the R wire. And each transformer has its own load.
The issue I see is when the NEST is not calling for heat. If the transformers are out of phase, since the R wire connects the NEST transformer with the heating equipment's transformer there could be 48 Volts between the C wire of the NEST and the W wire of the NEST. The NEST may not like that.
If phased correctly there would be 0 Volts between the C wire of the NEST and the W wire of the NEST. But can you guarantee the phasing between transformers will not be inadvertently changed if someone else works on the system ?
For best practice I would use a relay, since it provides 100 % isolation between the two transformers, then the phasing is not an issue.
109A_5
2
Re: How Do I Connect This Wire?
Nice job @EdTheHeaterMan good info.You can use the search feature above and look for "How do I connect that wire" and you will be able to find this discussion... even after I'm one of the Dead Men
Maybe Erin can scoop this up and keep it somewhere where it can be found like in a file. Don't know how you would organize the different drawings though.
It is definitely a good idea with all the Nest questions we get. There are probably 2-3 every week.
That's why I started it, just so I can find it easily
Re: Caleffi Idronics milestone
I was up to date on the downloads but that was a couple of years ago. Will check
Thanks they are a wealth of information
Thanks they are a wealth of information
Re: Old Toledo 1-A pipe threader
Never seen a Toledo 1-A so don't know how they work. But no the pipe threads never changed
The only variation when hand threading is how tired
the operator gets.
The only variation when hand threading is how tired
the operator gets.Thank you.
Sitting at home, when it is minus 34 C (Damn cold F) my bare feet on the tile floor, am feeling very grateful to the people here.
Eight or nine years ago, started hanging out here, learning & studying space heating. The knowledge gained and assistance/advice is directly responsible for giving us a very comfortable home. Learned how to do a load calc, learned about insulation and hydronics, and some interesting work processes along the way.
Thank you so much.
Tony Aldridge.
Eight or nine years ago, started hanging out here, learning & studying space heating. The knowledge gained and assistance/advice is directly responsible for giving us a very comfortable home. Learned how to do a load calc, learned about insulation and hydronics, and some interesting work processes along the way.
Thank you so much.
Tony Aldridge.
nibs
9
Re: Inquiry sent to Xylem today - Update with new circ (Grundfoss Alpha)
Thanks for all that detailed information @hot_rod.
To be clear, I have not associated any noise with the valve itself.
Instead the noise seems to be a local vibration in the boiler loop that is transmitted throughout the system piping.
In my case the noise is present when the valve is completely closed, then lessens as the valve starts to modulate, and once it's completely open at 141F the noise is gone.
When I said that I cracked open a bypass, what I meant was that I slightly opened a valve that allowed some of the return water to flow directly back to the boiler, instead of going through the Caleffi valve.
I believe that opening this bypass slightly increases the head enough so that the FPS falls below 5 and thus the noise disapppears.
Eric
To be clear, I have not associated any noise with the valve itself.
Instead the noise seems to be a local vibration in the boiler loop that is transmitted throughout the system piping.
In my case the noise is present when the valve is completely closed, then lessens as the valve starts to modulate, and once it's completely open at 141F the noise is gone.
When I said that I cracked open a bypass, what I meant was that I slightly opened a valve that allowed some of the return water to flow directly back to the boiler, instead of going through the Caleffi valve.
I believe that opening this bypass slightly increases the head enough so that the FPS falls below 5 and thus the noise disapppears.
Eric
Re: How Do I Connect This Wire?
One of my favorite wiring diagrams comes from @EBEBRATT-Ed
How to wire a RIB U1C relay to be used as an isolation circuit. It is generic and shows a thermostat that requires a C terminal connection, and the NO contacts of the relay to operate the boiler, but the NO contacts from the Yellow and Orange wire can operate a zone valve, or furnace, or switching relay, or what ever needs operating that the direct connection is having problems with.
How to wire a RIB U1C relay to be used as an isolation circuit. It is generic and shows a thermostat that requires a C terminal connection, and the NO contacts of the relay to operate the boiler, but the NO contacts from the Yellow and Orange wire can operate a zone valve, or furnace, or switching relay, or what ever needs operating that the direct connection is having problems with.
Re: Weil McLain glass tube (site) replacement
Thank you both so much for the speedy responses! I will make sure to follow the rules in the future.
