Best Of
Re: Flame Retention Head for Weil Mclane Boiler
Or, if your house has natural gas, you can convert that boiler using a Carlin EZ-Gas burner.
Re: Another cold climate home with hydronic piping in exterior walls. Who does this??
The seal around the bottom of the wall and the plate and the floor is usually poor. pipes usually freeze not when it is the coldest but when it is fairly cold and there is a wind to push air in through openings in the building that are close to a pipe.
mattmia2
Re: Correcting my 2 Zone Monoloop System (Need Help)
Your pumping toward the ex tank which is not the best. Monoflo systems work well if designed well. The most difficult thing is they can be difficult to bleed the rads or baseboards, I know I lived with one in my own home for 34 years. But once bled they work fine.
One thing about a monoflow system is if the original system worked and gets messed with it may not work. I cant tell from your picture what was changed or modified.
If adding to a Monoflo system it is better to make a new zone which does not have to be Monoflo rather than screw up the original system.
Re: Viessmann cast iron boiler replacement.
I believe that is a Verticell indirect water heater
GGross
Re: Weil McLain 88 boiler surging and looking for a boiler feed pump design
Let's start with cutting down the operating pressure. Try a cutin of 1 psig and a cutout of 2 psig (you'll have to go into the pressuretrol and adjust the differential.
I think that that LWCO has two sets of contacts — on to cutout the boiler, and a slightly higher one which signals the feed. That one could be used to signal your boiler feed pumps — but I'd put a relay or contactor in between, as I wouldn't like putting the starting current of the pumps through the controller. Not hard to do. Then there should be a float control on the boiler feed tank, to feed makeup water when it gets low — and an overflow to a drain.
I'm not at all surprised that the boiler surges. Too much additive is a good deal worse than too little. Dial the feed back until it is just barely enough to keep the pH slightly basic (I'd shoot for around 8, but at least more than 7).
Re: Another cold climate home with hydronic piping in exterior walls. Who does this??
Piping in an outside wall is never a good idea. Pipe insulation limits the loss, but it is all about the delta between the pipe wall temperature and the space around it.
These charts show the pipe loss differences between bare and insulated copper.
Two things about glycol, it has a lower heat capacity, higher viscosity
So a 40% mix at 120F temperature would require about 8% higher flow rate, maybe 15% higher head. In some cases you may need to increase pump size.
In a clean system, hydronic glycol should last 15- 20 years. Testing every few years will assure it stays in good condition.
In some cases glycol is the best answer for 100% freeze protection if piping is susceptible to freezing and extended power outages.
I've seen fin tube baseboard freeze inside the building, when there was air leakage around the framing. So the building envelop has a lot to do with freeze potential.
hot_rod
Re: Another cold climate home with hydronic piping in exterior walls. Who does this??
hot water does NOT freeze quicker!
pecmsg
Re: 1950's Furnace Gas Valve Replacement - Honeywell
Oh, and if you figure it out, once it is working watch the flame from the burner when the blower starts. The flame shouldn't change at all when the blower starts. If it does the heat exchanger is compromised and it is immediate replacement time for the furnace. Since the pilot probably went out with the duct cleaning I am concerned that the heat exchanger may be bad and the duct cleaning was sucking air through the fire side of the HX.
mattmia2
Re: Troubleshooting Limit Circuit Fault
Gotta check static pressure and temperature rise. Gas pressure measurements and combustion analysis need to be performed.
Its probably oversized equipment installed on undersized ductwork.
