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Sizing steam radiators
: I need help sizing a steam radiator. the current radiator in the room is 16 sections, 26 inches high, 5 regular tubes. I'm trying to find out how many BTU's this radiator is and I want to replace it with the highest radiator available so I can maximize wall space. please help
thank you
BDRaff
Re: Radiator vent loudly sucking air INWARD after boiler turns off
You explanation IMHO is flawed. It's a matter of Physics that when the steam collapses the air has to get back in the system.
Do you agree?
Nothing in the statement you posted:
"It has to do with do you understand what is going on and what methods to correct it. If the pressure is high, lower it. If the vent is not operating properly, test it and replace it with one that was tested. If you need a steam control device to operate the boiler instead of a thermostat, get one. Basic problem solving:"
gives any information or tells anyone how to fix the problem we are talking about.
"It has to do with do you understand what is going on?
Yes, I do, the change in volume from steam to condensate is 1700x
"If the pressure is high lower it"
I agree low pressure is better in most cases. But as @ethicalpaul mentioned this has 0 to do with steam collapsing and the resulting vacuum.
"If the vent is not operating properly, test it and replace it with one that was tested."
Vents vent air and let air in. They close when they sense steam. They should not leak water. They should not pass excessive steam. That's all there is to it.
There is no mystery here. Air has to get back in the system when the boiler cycles off.
Re: Navien condensing boiler settings troubles
How long were your thermostat cycles when it was close to -23C that night? In other words, was the thermostat calling for heat for for 2+ hrs straight or did it cycle off? I'm wondering if you can turn down your high setting even further, below 72C. You might not know for sure until you have a design temp of -40C outside?
Turning that lower setting to 28C should really help out with the overheating problem you described. Is 28C the lowest option?
bjohnhy
Re: Hydrostatic 3250-Plus C wire
You can get what Honeywell calls a fan center which is a relay and transformer in one.
The rib relay is about $20, a transformer is about $30 maybe. So a fan center is about the same $. I like the rib relay because it has an idiot light to tell you the relay is calling. A fan center complicates thing but thats just me.
You mount a 4" square box bring 120v to it. Mount the rib relay and the transformer on the box bring the thermostat wires to it and two wires to start the boiler and your done.
See the attached fan center
Re: I'm getting solar panels. I'll let you know how it goes in this discussion thread.
It's not a cult, I am free to leave any time.
Re: Navien condensing boiler settings troubles
Okay, here's an update on what I've done so far… From the service menu, I lowered the absolute minumum and absolute maximum supply temperatures to 28C and 72C respectively. From the regular menu, I set the outdoor reset to the user-defined curve, changed the outdoor high temperature setting(for outdoor reset control) to 18C, and disabled the WWSD function. From last night's low of -23C to today's high of -11C, the boiler seems to be following the thermostat setting nicely. Things seem to be on the right track now, but I'll have to wait for some wider variations in the outside temps to know for sure. In the meantime, I'd like to thank all of you again for the guidance and great suggestions you've given me!
Mobi
Re: taco sentry zone valve
@heatguy24 Please see below. The resistor would go across the 2 power terminals on the Zone Sentry valve actuator labeled C-W/y
SteveSan
Re: Radiant flow not pushing fast enough
I would purge air from the loops and add a halfway decent microbubble separator. You have short loops, and not many of them, the smallest pump should still be overkill, if its not flowing look to the system, you have no lack of pump on this system unless your loops are a whole lot longer than the mention 200'
GGross
Re: Triple Aquastat
why are there 3 transformers (and probably a 4th for the indirect that we can't see)? it is probably time to pull all the wires out and start over before you condemn any controls. it looks like someone added the indirect with as little effort as possible so there is now wiring going everywhere. figure out what goes to the t-stat and the aquastat in the indirect and piece it together from there.
mattmia2