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Re: Is the LAARS FT MFTCW140NA2XN any good? Any way to determine manufacture date?
They're okay. Not great, but not terrible either. I know we're not supposed to discuss pricing but this is public knowledge so I'll say that you can pick that boiler up new for under $2k. Unless it's $1000 or less, I'd pass knowing it was most likely abused pretty badly in its short life based on the fact that it was removed from service. For $1k it may be worth the gamble with a 10 year life expectancy.
GroundUp
2
Re: What is this vent?
at least from 1929 and mentioned in catalogs up to 1953.. that I was able to google
no specific information found though
There are photos and descriptions in this catalog, but can only preview tidbits.
https://www.google.com/books/edition/Domestic_Engineering_Plumbing_heating_Ca/WMYkrxAdvOYC?hl=en
Says new york public library digitized, but I couldn't find it on their website.
Guess you have to request it https://legacycatalog.nypl.org/record=b11974017~S1
dko
1
Re: LAARS MASCOT FT 140 k model
Ken Resnick is the Babe Ruth of Laars service, I am naming my next child after him!!!
BillyO
2
Re: Watts radiant onix tubing...rip out?
If the circulator runs its not a transformer. The relay should tell you that. Hopefully the service guy could see that.
When he purged the system did he open up the flow checks? I had that happen to me in an onix system last month... it was stuck shut. He would need to open up the set screw on top of each one. They are the green things on the supply going out.
When he purged the system did he open up the flow checks? I had that happen to me in an onix system last month... it was stuck shut. He would need to open up the set screw on top of each one. They are the green things on the supply going out.
kcopp
2
Re: Lost wrench for the Lost Art
I used to have a 150 year old 8 foot chain tongs...Hung it in the barn...Awesome. The largest screw pipe I ever did was 12" in Rockefeller Center Mechanical Floors fire line. 40 feet in the air. Two of us had to screw on a tee by hand. Then used a Ridgid Compound Wrench...anyone ever use one? Mad Dog 🐕
Re: Closed Loop Water Storage Tank Lifespan
Hi, An approach I've used successfully is to use a large plastic tank, essentially for heat storage, and then use copper coils high and low to put heat into the water or remove it. This way you can have a long-lived tank, but not under pressure.
Yours, Larry
Yours, Larry
Re: How to add pressure to boiler system?
In your second picture down there is a yellow handle valve to the left and below the expansion tank in the horizontal 1/2" copper pipe. The valve looks like it is closed. Open it until you get 12-15 psi on the boiler gauge then close it.
Not the yellow handle valve to the left in the larger vertical pipe.
You need to find out where the water is going. If you keep losing water and adding new water that is not good for the boiler
Not the yellow handle valve to the left in the larger vertical pipe.
You need to find out where the water is going. If you keep losing water and adding new water that is not good for the boiler
Re: Need opinions - Replace system 2000 or repair>
Thank you for your post, @Draven . The good news is that we are now aware of your situation and can be involved to help out. Please give us a call at (908) 735-2066 (or PM me) so we can provide support and connect with your contractor to figure out the right steps to make sure your system, installation, and components are up to the reliability that we are known for and that you and we expect.
I look forward to hearing from you soon.
Roger
I look forward to hearing from you soon.
Roger
Roger
5
Re: Munchkin M80 boiler not heating enough.
80,000 BTU x .90 efficiency = 72,000 BTU
72,000 BTU divided by 2700 sq. ft. = 27 BTU/sq. ft.
Just guessing, that boiler should be sized properly and your phrase, "I have about 14 zones in a warehouse 60x45 but even if I zone it to 3 valves we cant get it over 55 degrees running nonstop." is telling. Something is restricting the output of the boiler.
Have you had your boiler serviced recently? Just cleaning the heat exchanger, doing a combustion analysis by a person that knows how to read the numbers, washing down the condensate drain...........can turn up the problem.
72,000 BTU divided by 2700 sq. ft. = 27 BTU/sq. ft.
Just guessing, that boiler should be sized properly and your phrase, "I have about 14 zones in a warehouse 60x45 but even if I zone it to 3 valves we cant get it over 55 degrees running nonstop." is telling. Something is restricting the output of the boiler.
Have you had your boiler serviced recently? Just cleaning the heat exchanger, doing a combustion analysis by a person that knows how to read the numbers, washing down the condensate drain...........can turn up the problem.
Re: Munchkin M80 boiler not heating enough.
That’s the water pressure switch that was jumped . From the looks of the inside cabinet I would say that the swirl plate and the Venturi inlet should be clean also generally the inside cabinet . How old is the boiler and the system ? Generally I used to replace the swirl plate before they became brittle from age and destroy the blower . What temperature difference are you see across the system loops and what difference across the boiler ,this is after the system has been running a few hours not a cold start . What pressure is the system operating on it should be at least 15 to 20 . Also replace that water pressure switch its most likely clogged while your at it flush the boiler and check the condition of your water if dirty then most likely the original contractor never cleaned and flushed the system properly. If so flush then clean and flush then system and add and conditioner and inhibitor . It may be that the system was never been designed to supply more then 55 degrees indoor temp in which case supplant heat would be required .
Peace and good luck clammy
Peace and good luck clammy
clammy
1