Best Of
Re: Material price increases due to govermental tarrifs
I believe that’s been debunked. Time will tell.
Re: Viessmann Horizontal Indirect
Have you ever ordered a V. 119-gallon vertical tank? It comes two pieces; the tank and the enclosure and is a PITA to put together.
We also had the room for a horizontal and it’s the perfect height for serving cocktails.
Re: VRF system with pool heat zone?
A regular air to water won't get you heat recovery. For that you need either a real heat recovery system (these usually have 3 pipes so any indoor unit can either cool or heat at the same time) or you need a water to water unit where you are dumping house heat into the pool directly.
People tend to way overestimate heating and cooling loads. I have pretty hot muggy summers, around 3000sqft with reasonably sized newer windows would have a cooling load around 2.5 tons and that is on the hottest day, rest of the time is well bellow that. Free heat if you can get it into the pool for cheap but also won't do all that much.
Kaos
Re: Size Transfer Pump to Flush a Small Hydronic Loop
a small 1/2 hr transfer even a small sump pump will flow that
If it is just an ocassional use get a small plastic sump pump pump.
If you have a scaling concern get a tankless water heater kit, pump, cleaner, hoses, and bucket, around 80 bucks online
hot_rod
Re: Material price increases due to govermental tarrifs
I'll believe that when I see it. A few of the Caleffi products bear a striking resemblance to others coming from Asia, but it's hard to say. Then there are other items like Rifeng and Bluefin that we all know come from China, without a significant price hike. Webstone is simply greed in my opinion as they've got the market cornered with certain valves and can charge whatever they want, but the others I think for the most part are simply catching up to the 15+% inflation we had not so long ago. It looks bad now but I can see quite a few items that I paid the same for a month ago as I did 3 years ago. For example we have Taco, an "American" company, charging 35% more for zone controls than they did a year ago but that price was stagnant for 2-3 years prior.
GroundUp
Re: Single Pipe Steam Boiler Replacement & Piping (Unusual header?) Advice for Amateur
The near boiler piping is very wrong. it might happen to work ok now but it should be done correctly with the new boiler.
The header should be in the order of:
risers from boiler
risers from header to mains
equalizer
The header and risers from boiler size should be at minimum the size specified in the manual
Each main should connect separately to the header. If a main is counterflow it needs a drip down to below the water line before it connects to the header. each drip needs to have its own return connection below the water line.
The header shouldn't reduce in size on the horizontal so it doesn't trap water.
Run away from anyone that says to put in a boiler bigger than the connected edr. The nameplate edr has an extra 30% pickup factor subtracted from it so it is probably oversized a bit even if it matches the nameplate. Do not use anyone that suggests you should go bigger than the connected edr beyond what is the closest size.
If you have a main that is filling from a return, you have to figure out why that is possible, most likely returns from different mains that are connected above the water line. The returns from different mains must connect together below the water line. The most common reason for this is that a connection that was below the water line became above the water line when a boiler with a lower water line was installed. Also possible that whoever installed that boiler didn't understand why returns at the boiler needed to drop below the water line before connecting. The steam from the other main will come in to the main at the vent and close it, preventing the main from venting properly. It will eventually vent through the radiators but it will be slow to heat.
Your near boiler piping looks like they just hooked up whatever was closest wherever they could and didn't know what they are doing.
mattmia2
Re: An off-topic waste of your time (but amusing)....
I logged over a thousand miles in the last ten days & am so tied of sitting that I'm going to have the kids doing lawn work all day. Also, DC traffic sucks.
Protip: if you're driving with two different GPSes, make sure they have the same destination…
ratio
Re: Single Pipe Steam Boiler Replacement & Piping (Unusual header?) Advice for Amateur
Suggest you get @Mad Dog_2 to consult. PM him
Re: Which indirect water heater to buy or not?
Replace it with a standalone water heater and let your boiler rest (and not heat your building) during the summer.
