Best Of
Re: Black particles in water: Navien tankless water heater to blame?
You need to do the necessary research to determine that the problem is an inherent problem in the unit and identify the problem, and not the result of any of a host of other causes. It's called proof — and they aren't going to do it for you.
Re: My three worst jobs sites. What are yours?
Aw c'mn guys. Sewage treatment plants aren't bad. I've worked several in my day, and first place you get used to the smell. Second place, personal hygiene is number one. Never washed my hands as often again. Third place, if the operator is any good at all, the place is really pretty clean… and we were really big on confined space protocols.
Oh just one more thing. Don't go for a swim…
Re: Piping from scratch
Scrap the system and run new panel radiators . I would run a home run system (3/8" works here).
Big Ed_4
Re: Piping from scratch
panel radiators will be less expensive, cast iron radiators will be more comfortable. it is up to the preference of the owner.
mattmia2
Re: Oil Water Heater for Disabled Couple on Long Island
you can spend an extra $50/year on hot water for quite a while before you make up the cost difference between an electric and oil water heater, especially when you add in annual oil burner maintenance.
mattmia2
Re: Navien combi
typically the boiler is filled and little if any water gets added
If you have water that is way out if the spec that Navian suggests,
fill the boiler thru one of these
I also like to add a conditioner to the filtered water
I would not use softened water to fill the boiler!
hot_rod
Re: Steam device to be identified
I’m with Steamhead: boiler-return trap. Do you have photos of a radiator? Close-up of the supply and return sides would be helpful. And welcome!
Re: Steam device to be identified
it is all the same yet all different. Everything is the same controls we have on US boilers but it is all a different design and manufacturer. It looks like the low water cutout is a Mcdonnell Miller low water cut out that we use in the US.
Unless there is something special about European boilers that can separate the steam and water, the near boiler piping is very wrong.
I assume that this is a 2 pipe steam system, each radiator has a supply and a return, not a single pipe where steam enters and condensate exits through the same pipe at the bottom of the radiator.
I think that is some sort of "boiler return trap". If the pressure in the steam supply main gets too high in comparison to the return for the water to be able to return to the boiler, it allows some steam in to the condensate return to equalize the pressure and allow the water to return to the boiler.
You would have to find the European @DanHolohan to figure out exactly what that device is.
mattmia2
Re: Why purge valve above boiler? Pumping Away.
you turn off the “service” valve , open the fast fill function
So water can only go around thru the system, it pushes air as it goes, up through the boiler to the “drain” valve purge point
With this method everything including the boiler gets purged from one point
hot_rod