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Re: Radiant Heating Pump pulling power, 0 GPM output. Advice Appreciated
Radiant heat in the floors.
Pheraph
1
Re: Help me understand my hydronic heating system - air lock?
Good job on the pinch plier hack.
Is this an upstairs zone. Could it be you don’t have adequate fill pressure. Those dual gauges are not always so accurate. Bump the fill pressure. 5 psi or so for a test. Or screw a pressure test gauge on one of the other purge valve to confirm pressure
Is this an upstairs zone. Could it be you don’t have adequate fill pressure. Those dual gauges are not always so accurate. Bump the fill pressure. 5 psi or so for a test. Or screw a pressure test gauge on one of the other purge valve to confirm pressure
hot_rod
1
Re: Main Vent Replacement
To start off, replace each old main vent with a Gorton #2. Add more venting if needed.
Re: Two quotes for combi boilers for radiant and DHW
@ThinkpadUser7 said:
I'd go with either installer as their work looks clean. Make sure they follow the manufacturer's instructions and insulate their pipes.
I'm not too concerned about hot water production, though I was curious about the significance of a higher minimum.
The IBC CX combi and the Lochinvar Noble combi (floor or wall mounted) would be good choices. Either their small or midsize models would suit your needs. The midsize gives you more DHW and would modulate down comfortably.I'd go with either installer as their work looks clean. Make sure they follow the manufacturer's instructions and insulate their pipes.
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