Best Of
Re: Am I being dense?
What’s on the other side of that creepy looking door? Is that where you hide all the trolls?
No you can’t. Water will take the path of least resistance and run in the pump outlet up to the purge valve. A centrifugal pump is unlike a positive displacement pump. There is a path for the water to travel backwards through the pump. Closing those valves above the purge valves will prevent water from going from the feed that enters the system just under the circulator pumps from going the long way around thru the radiators and purging the loops.
The only thing those valves are good for is for swapping out a bad calculator pump. The flo-check on the supply and that valve on the return will keep the water in the radiators when you drain the boiler to replace anything between the flo-check and the return. Boiler gauge, relief valve, circulator pumps, and the like can all be serviced with the water in the radiators staying put. Not a fan of that design. Looks more like a mistake than an intentional design.
Re: New Return Pipe Noise During Renovation
OK with your 4:55 Pm post the pressure was still approaching 10 PSI. Glad to here things are better. Pressuretrols are notoriously dysfunctional, I'd keep an eye on it and see what it does.
109A_5
Re: New Return Pipe Noise During Renovation
Something like this, there is probably others out there. I can't speak to the quality, I use more commercial / industrial type gauge equipment. You may want to put a valve between the 0-3 PSI gauge and the rest of the system, you can close the valve when not in use and to protect the gauge from excessive pressure.
109A_5
Re: Need a bit of help/advice...
cheaper to buy propane than to pay 3 years of unpaid ng bills and the service reconnect fees and deposits. try the code enforcement of the city building department. they are too busy to deal with someone's unpermitted fence but will probably be interested in someone trying to blow yup a house with propane.
This house blew up in Ann Arbor about a year ago because of a similar situation:
mattmia2
Re: Wifi replacement for aube telephone controller ct240
A much cheaper alternative to the webrelay is Shelly. They make a Wifi and Bluetooth dual relay that goes for ~$30, and easily integrates with Google and Apple Smart home apps.
I think the Shelly Plus 2pm would work for you situation, but they make a wide variety of similar devices. I have several that I'm happy with.
rynoheat
Re: Taco 007e Installation
The 007e is not going to raise the system pressure, all it can do is create a pressure differential. It sounds like you still have air in the system, every time you purge, you are still introducing air into the system. Incoming water can contain up to 10% air.
What I do now is get the boiler hot and let the system circulate, hotter water lets the air out of solution easier. Turn the water pressure up to help constrict those air bubbles.
To determine if your indirect has a leak, turn off the automatic fill valve for the boiler and monitor the pressure then.
If the pressure keeps rising, then yes, your indirect has a leak.
Dave H_2
Re: New Century House with Two Pipe Steam - Questions
You can try some penetrating oil on those valves. Take it easy to try turning them.
Take care with them, new regulating valves are very expensive.
Re: Lochinvar NKC150N - DHW High Temp Issue
the installation manual mentioned the need to install a DHW mix valve, field supplied.
The red and blue pex piping above the boilers should allow you to easily cut in mix valves? The do not need to be under the boilers should allow.
hot_rod
Re: OWB and Vitodens
Disconnect aquastat from DE1 and reconnect in the TT circuit between the switching relay and Vitodens. The circs will all still operate as intended but there will be no signal to fire the Vitodens unless OWB falls below setpoint and closes the circuit. Easy peasy.
GroundUp
Re: Wifi replacement for aube telephone controller ct240
I'm unaware of an internet accessible thermostat that can do that specific task across several units at one shot. You might be able to replace just the CT240, depending on how it connects to the other thermostats. If all you need is contact closure to change modes, https://controlbyweb.com/ has a WebRelay that, well, is a relay that is internet-accessable. You could also just use the G terminal on a regular WiFi thermostat, just use the app to turn on the fan to close the contact & switch the system to occupied.
ratio