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Re: Replacing an old condominium thermostat
I'm not 100% convinced that's a Normally Open zone valve, but if it opens when then wires are disconnected and not touching at the thermostat, then... ISU is Installer Setup. You need to access it and go through the prompt so the thermostat knows what to do. Wire R+Y and do Step 5 and see what happens.bokerman said:@HVACNUT many thanks for the comment. I don't really understand the note 5, what is ISU? I see three modes on the thermostat menu, Heat, Cool and OFF. There is nothing more in the Menu except from clock setting and similar. Again, thanks a lot for the help!! Here is how it looks right now, it is basically acting inverted (turns on when it should turn off):
HVACNUT
1
Re: A heartfelt thank you to all American Veterans...
Thank you to our men and women in uniform, past, present, and future.
Tutoring help for NYS & NYC Master Plumber Exams and All Plumbing Civil Service titles
I've been helping guys and a few gals study and pass their exams as needed for as long as I've been taking Plumbing & Steamfitter, Boiler Inspector exams (38 years).
Math never came natural to me, but I've developed tools 🔧 and study habits that win! I've easily taken over 30 exams over the years and always scored very high...through hard-core study habits & determination 💪
There's been a slew of young men reaching out and I'm tutoring & guiding them as they need it. A few hours here and there to get focused in. A Tune up scrimmage before the Big Day.
I've been in their position, just scraping by and I'm not looking to buy a new boat here! My old, 12 foot rowboat 🚣♂️ on the Reservoir is good enough for me. Here to help you pass. Mad Dog 🐕
Math never came natural to me, but I've developed tools 🔧 and study habits that win! I've easily taken over 30 exams over the years and always scored very high...through hard-core study habits & determination 💪
There's been a slew of young men reaching out and I'm tutoring & guiding them as they need it. A few hours here and there to get focused in. A Tune up scrimmage before the Big Day.
I've been in their position, just scraping by and I'm not looking to buy a new boat here! My old, 12 foot rowboat 🚣♂️ on the Reservoir is good enough for me. Here to help you pass. Mad Dog 🐕
Re: Solar Radiant Heat for Airplane Hangar
Aircraft hangers are an almost ideal space for direct, passive, solar heating. I did one, years ago, for a maintenance hangar at an airport in New Hampshire. A specially designed glazed roof with a south facing slope allowed the sun in -- on a sunny day -- which shone on the concrete floor of the hanger. The floor was deep enough so that it stored enough heat to keep the temperature reasonable during the day -- and kept the building warm enough for three or four days without sun. No moving parts. No water (airplanes and water don't get on well).
Re: Solar Radiant Heat for Airplane Hangar
With no storage system heating drops off with solar loss. The slab can hold lots of btu's and the space cooling is delayed some amount of time. There will also be a delay in feeling heat after the sun starts heating panels. It can be a game of how hot can you tolerate at the end of the day so it's not too cold in the mornings. How cold it gets during the no sun cycle and how delayed the heat up cycle is depends on slab thickness, tubing spacing, tubing depth, panel btu output, envelope heat loss, etc. The ratio of collector power to the structures heat loss will determine on average if you overheat or under heat. On a day of low btu input it will get cold and may take a long while to recover. Rational sized storage only covers X hours of structure heat loss. It can make the space consistently more comfortable in the hours outside of sun shine. Storage helps to prevent over heating the space and spreads the days heat harvest of the day. The heat in the tanks can be used to extend heating into the evening/night or can be saved over night to give a free heat shot in the dark of mornings.
Teemok
0
Re: Indirect Radiators
I know a couple of foundries still making cast iron boiler sections like this. Would that help you? The connector nipples are - I think - 2" conical. No idea what the EDR is but I could probably find out.
Re: curious if it has been done and how it worked out-replace top portion of brick chimney with SS
As noted, stainless -- or any metal -- will fail in a few decades. One of the chimneys I care for was built of brick in 1780, and I'll grant you that it did need repointing a decade or so ago... but that's all its needed.
Now I'll grant you that it really is brick, and not concrete dyed red... I don't really know how long modern "brick" will last. A century, maybe?
Now I'll grant you that it really is brick, and not concrete dyed red... I don't really know how long modern "brick" will last. A century, maybe?