new boilers and electrical power fluctua
SIL installed a new boiler, he’s a plumber and has done many installations.
apparently new boilers shut themselves down and stay down when hit with power fluctuations. He described it as locked. have to wait and manually reset. a loss of power and power back on doesn’t cause the problem, fluctuations do.
He talked with the supply house and they quickly recognized the situation, but could offer no solution.
anyone aware of this problem and what can be wired in to prevent it from happening?
He has an electrician looking into a solution, but I thought I would ask here.
bobl Volo, non valeo
“But when you’re a kibbutzer and have no responsibility to decide the facts and apply the law, you can reach any conclusion you want because it doesn’t matter.” SHG
Replies
bump
bobl Volo, non valeo
Baloney detecter WFR
"But when you're a kibbutzer and have no responsibility to decide the facts and apply the law, you can reach any conclusion you want because it doesn't matter." SHG
I'll give it a shota power dip could cause the igniters to not fire while the gas valve is open .. that would be bador air dampers might close too much while the burners are on.....that would be bad too although the air and gas usually share the same mechanical linkagewhat is the power doing ?? just another guess but maybe a big capacitor might solve the problem but the power quality should be monitored to find out what exactly is going on when the boiler shuts downwith more and more stuff being run by microprocessors the program probably runs home when it see less than ideal conditions.
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Edited 7/21/2008 7:36 pm by maddog3
I'd opt for a big UPS used for computer systems. Should last long enough for a 5 to 10 minute total powerfail or "brownout" of lower voltage. $100+/- worth of UPS ought to do it, depending where you shop.
Quantum materiae materietur marmota monax si marmota monax materiam possit materiari?
he did say that it worked fine after power went out, but I don't think a UPS could run all the electrical like the igniter transformer, blower, some electronics and maybe a solenoid or two .
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Not for long term, but for a few minutes with a larger UPS.
Quantum materiae materietur marmota monax si marmota monax materiam possit materiari?
You think that it takes more than 1.6 MW?http://www.apcc.com/products/category.cfm?id=13&segmentID=3Most likely one of the larger "small" ups could handle it unless it was an oil burner.Don't know what size the motors on those pumps are.Edit. Realy all that needs to be kept operating is the controls. That is probably less than 100 watts.Now it won't run with just the controls and should safety out. But it should reset when power returns..
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A-holes. Hey every group has to have one. And I have been elected to be the one. I should make that my tagline.
Edited 7/21/2008 10:26 pm by BillHartmann
oh hell yeah 1600Kw would do it just right for him and at least a 1000 or more of his neighbors. maybe even 2000.
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There are two 1MW UPS units in the building next door. Each powered by a roomfull of LA batteries.
It is an ironic habit of human beings to run faster when we have lost our way. --Rollo May
LA ??you mean wet batteries?.
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Yep, lead-acid.
It is an ironic habit of human beings to run faster when we have lost our way. --Rollo May
duh .... brain sieze.
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"anyone aware of this problem and what can be wired in to prevent it from happening?"
Yes a telegram.
Or a fence charger.
He needs to be working with the tech support at the boiler manufacture.
That is ####. It is a potentinally common problem, that is why power supplies are designed to have enough hold time to keep the system running until the low voltage detector can do a safe shutdown.
And keep it locked until power returns.
And also a watch dog circuit to reboot it is it dies.
Back around 1970 we where operating a mini computer in a DC-3. It operated off a mot-gen set for th 120. I had magnetic cores so we loaded up the program and did the initialization on the ground.
Then just as the plaine could taxi out and turn around to take off the computer would crash.
Test it on the bench with a variac and when voltage would drop below 104 it ENERGIZED a relay to shut it down. But when voltage got to 90 the relay would release and the computer would try and run and crash.
Maybe the idiot that designed that circuit has a new job.
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A-holes. Hey every group has to have one. And I have been elected to be the one. I should make that my tagline.
thanks everyone
bobl Volo, non valeo
Baloney detecter WFR
"But when you're a kibbutzer and have no responsibility to decide the facts and apply the law, you can reach any conclusion you want because it doesn't matter." SHG