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Re: Pressuretrol and low pressure gauge
A lot of the old huge HRT boilers with a 8' diameter steam drum x 20' long they would sometimes mount the pressure controls on a manifold mounted on the wall about 6' up and run 3/4" pipe or 3/8 OD copper tubing over to it from the boiler with flare fittings. Otherwise you needed a 10 or 12' step ladder to climb up and adjust the controls.
I never liked that only because I was concerned the pipe or tubing would plug up. So we would put a valve on the tubing or pipe for a blow down.
That was ok except if someone forgot to close the blowdown valve the controls wouldn't sense over pressure with the long run of small pipe feeding the controls.
So I would put the high limit control (or the manual reset now) up on the boiler and just put the modulation control and operating control down on the wall.
I never liked that only because I was concerned the pipe or tubing would plug up. So we would put a valve on the tubing or pipe for a blow down.
That was ok except if someone forgot to close the blowdown valve the controls wouldn't sense over pressure with the long run of small pipe feeding the controls.
So I would put the high limit control (or the manual reset now) up on the boiler and just put the modulation control and operating control down on the wall.
Re: New 3 floor NCB-240 Setup Using 3/4" zone valves.
I just got your ping. But I will pong it to @hot_rod. He is the man with all the books on Cv. Personally I'm a Cd kind of guy. Although I do have a decent vinyl collection too. I might even have a few old cassette tapes in a box in the basement. I keep them with my floppy disk collection.
Re: Honeywell Mechanical Thermostat Calibration
If there was a meme of someone throwing something into a trash can or a bonfire, this would be a good place for it. Wait...think I found one.
https://youtu.be/FhOy6YAQmpI?si=dIGJgEXXKbSxGh_Y
https://youtu.be/FhOy6YAQmpI?si=dIGJgEXXKbSxGh_Y
Re: Pressuretrol and low pressure gauge
That will work.
Probably will violate the warranty but we do that every day anyhow.LOL
Probably will violate the warranty but we do that every day anyhow.LOL
Re: Any boiler can easily become a combi
I will say when a combi boiler fails to make DHW, or flow drops off, it can be a job to repair them. The boiler needs to be down to disassemble the DHW "module", so no heat either...I love that you even have a Caleffi Boiler and Caleffi pegboard
...To build your own external DHW "combi" module you need a circulator, heat exchanger and flow switch with a single switching relay box.
For most homes you would want at least 100,000 BTU boiler. This is my shop and I have it connected to a 55,000 Lochinvar Knight. It covers a hand sink and hose to wash the truck.
I would have gone with the standard pegboard from Home Depot
Re: Pipe Dope
@bowman
Just like I mentioned in my first post. You have 5 different posters with 5 different answers. It doesn't matter.
Everyone has their own opinion.
It's like which brand of coffee do you prefer?
1 brand of coffee does not taste the same to everyone.
Just like I mentioned in my first post. You have 5 different posters with 5 different answers. It doesn't matter.
Everyone has their own opinion.
It's like which brand of coffee do you prefer?
1 brand of coffee does not taste the same to everyone.
Re: Surging in the boiler, LWCO trips
Yeah the boiler piping is all wrong.
I find it very said than an installer can't follow the boiler manual. It wouldn't have cost any more money to pipe it correctly the first time. You can continue skimming but I don't think this will fix your problem.
I find it very said than an installer can't follow the boiler manual. It wouldn't have cost any more money to pipe it correctly the first time. You can continue skimming but I don't think this will fix your problem.
Re: Copper Riser from Boiler to Main
Thanks for the comments and help - been reading Lost Art of Steam Heating (revisited) and learned more about my system in past week than knew in 18yrs i owned this place. my service has been done by oil company guys. Up until couple years ago i had hot water from boiler (now separate gas hot water) and there was 2nd zone with 1/2in copper feeding baseboards in basement fed by pump that burned out. I had that all removed. There were old Hoffman non-adjustable vents on radiators for 1st and 2nd floor (4 radiators 2nd floor and 6 on1st floor) with 2 mains feeding front of house and back. Had and still have uneven heating and a couple slow radiators (2 biggest)- oil guy took all old vents off put on cheap home depot vents that shrieked like steam kettle and blew steam. Replaced them with new adjustable Hoffman vents. Got guy not associated with oil company to do clean service of boiler last few years. Used to have bad water hammer when did hot water from boiler- now know water level was too high- old glass was marked > 7/8 full by one of oil co service guys years ago saying i needed more water in boiler for hot water. Far less water hammer now system still not balanced but works better with less water in boiler (1/2 full).#2: A poor Equalizer!
My 2nd question is can someone please identify that horizontal copper pipe off copper leading to header? Please see photo.
My 3rd question is the main vents. Any idea make model? Home was built 1950 any chance these are original vents? I see they are on elbow. there's space to put one back and up but other has beam in way- can i have 45 degree riser used to get by beam and put new vent on top of that?
pecmsg
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