Best Of
Re: Mystery domestic water line
Hi, I saw this on Ebay "Metrotech Model-420 Pipe And Cable Locator Vintage Transmitter/Receiver". It's not expensive. A locator that can be attached to the pipe inside will let you trace the line wherever it goes.
Yours, Larry
Re: Unrecognized return vent
I believe I may have mentioned this previously.
I worked on a system that had "Kelmac Jr. Retarder" steam traps.
IIRC, the "Retarder" was 3/4" size and the "Jr." was 1/2" size.
The Kelmac valves left in the system were worn out and did not have any special designs for metering. Just a globe valve.
The guts had been removed from all traps.
Most valves changed and supply orifices added.
No return traps or drums left in basement.
System would run on ounces when done with changes.
JUGHNE
Re: Radiators getting hot when heating circuit off
One the spring checks is bad for the top floor loop. No isolation valves makes it a PITA, but not too much... unless there's antifreeze in the system. Now is the time to replace air eliminators as well if needed.
HVACNUT
copper pipe and vibration
Hi all;
I have a 50 year old copper pipe embedded in cement hydronic system and I have never seen
an answer to my question. Would the vibration from a washer or dryer (sitting on hydronic floor system) affect my old pipes? So far I only have to make up water once every 9-12 months and very little at that. I am new to this type of heat (always had forced air) and several plumbers said not to worry your pipes will fail from corrosion before they fail from vibration.
Nice to know…but does anyone have an opinion? I'm probably overcautious but I hate to put ANY unnecesary stress on my copper hydronic system if I dont have to. I checked prior posts but could not find any on this subject. Thanks in advance from a newbie!
Re: KBR 42 3 Bosch Greenstar
it's the first thing that comes up googling that error code, no flame detected on ignition. For any failed ignition on modern condensing boilers the procedure is relatively the same. Clean and check burner/heat exchanger, clean/replace electrodes, check gas supply and combustion analysis to correct any underlying issues. Fouled electrodes are typically a symptom not a cause!.
Once the new parts are installed and heat exchanger cleaned I would want to set up the burner properly. gas pressure, gas valve adjustment, check for flue recirc etc. those parts will foul up over time, but in my opinion if its happening before the 5 year point I would be looking into why.
GGross
Re: Co-op in Brooklyn looking for steam consultant, 120 unit, single pipe, 1950s building
FWIW, my go to electrician (a master of his trade), told me that significant voltage reductions are common during high demand periods, and that there is often significant equipment damage. This is in the queens and Nassau County area. New York. He obviously has no ax to grind. Presumably, electrification is good for the electricians.
Re: Co-op in Brooklyn looking for steam consultant, 120 unit, single pipe, 1950s building
To All, you do not need documents to know that an 8 percent reduction will cause AC units and other equipment to to fail. Ask the people in my community. Just think about it. If you have a normal reduction in voltage that occurs during the summer, lets say just 4 volts, then you add a reduction of 8 percent, which is about 9 volts. What do you have?
Re: Co-op in Brooklyn looking for steam consultant, 120 unit, single pipe, 1950s building
To All, there is something you should know about Electric utilities that engineers know. When the utilities do a 8% power reduction, they do it not for you. They do it so that the compressors in your AC units will not work. Only the fans will come on. Reducing load to sections of the grid. This will protect their equipment and prevent overloads and automatic disconnection. The utilities have a short time [less than a second] to correct an overload or a shift in frequency caused by high loading. I have gotten around this by using an AVR automatic voltage regulator. When I replace my burner this fall, I will connect one to it.
Re: Co-op in Brooklyn looking for steam consultant, 120 unit, single pipe, 1950s building
They are out of their minds. The grid is borderline as it is . More electrical load without improving the grid is just nuts.
From my experience when you get down around 108ish volts things stop working. Voltage is suppose to be within 10% of the equipment name plate. 120v which most things are rated at-10%=108
Re: adjusting airflow on Trane Gas Furnace
Thanks for all the responses. After much digging I was able to find the directions at tranesupply.com. All airflow adjustments are made through the interface on the furnace. I was able to increase the airflow and that appears to have resolved the issue.
Take care
zepfan