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Re: Tiny home in floor radiant hydronic heating (warmboard) help
About the only small enough lp heater is a 6,000 btu/ hr water heater. They are noisy and fairly inefficient
When you run a heat load on a tiny home, it is tiny also. I used a small electric boiler on an 8x20’ home I built. I actually downsized the element in the Thermo 2000 boiler.
One thing to be aware of is the amount of actual floor space to cover the load. With built ins you end up with maybe a 3’ wide strip of useable radiant floor heat. Mine was spray foamed and had good windows, so the load was under.2,000 btu/ hr. The heat from cooking or running a small over is about all you need for heat🤔
When you run a heat load on a tiny home, it is tiny also. I used a small electric boiler on an 8x20’ home I built. I actually downsized the element in the Thermo 2000 boiler.
One thing to be aware of is the amount of actual floor space to cover the load. With built ins you end up with maybe a 3’ wide strip of useable radiant floor heat. Mine was spray foamed and had good windows, so the load was under.2,000 btu/ hr. The heat from cooking or running a small over is about all you need for heat🤔
hot_rod
2
Re: Hoffman 2 Vents?
I only think he was a bit of a con man by saying that you could try a single one of his vents to experience the benefits of vacuum.If you don't let air back into even one radiator in a one pipe system it will in fact stay warmer longer than all the others. It has no choice. Please think about this. The steam is collapsing in that radiator dropping the pressure fast, faster than it is dropping in the main. There is still steam in the main feeding it. Steam will continue to flow from the main into it. All the other radiators also are condensing and dropping their pressure. However, all those voids will be filled by air from their rooms, not steam from the main, because the room has the highest pressure and will be the supply. In the case of the radiator with the vacuum vent the highest pressure is still the main. Hoffman is correct, you can see the effect this way.
oh and he was a minor con man if he said you could save 25% with a vacuum system.
But if he believed those things himself I would just say he was mistaken
People really can't seem to grasp what a big deal this is when every radiator in the system is doing it. They apparently can't appreciate the difference between running radiators that stop getting steam from the mains INSTANTLY when the boiler goes off vs radiators that NEVER stop getting steam from the mains. They also can't appreciate how fast the boiler starts steaming again when the header pressure is even 2-3 psi below atmospheric and how fast it returns to the radiators on the next burn. Several burn minutes are saved each and every cycle.
PMJ
1
Re: shut off valves turn but don't work
Anyway... It looks fully opened in the first picture...
reggi
1
Re: C wire to boiler no power.
Hello @sschoe2,
So the boiler transformer is actually good ?
I don't advise just adding a 2nd transformer at the NEST without a relay.
See this thread kind of near the end, the posting just before wiring diagrams and on.
https://forum.heatinghelp.com/discussion/comment/1782234#Comment_1782234
Often the NEST may charge from the unused AC equipment. Is that equipment dead too ?
So the boiler transformer is actually good ?
I don't advise just adding a 2nd transformer at the NEST without a relay.
See this thread kind of near the end, the posting just before wiring diagrams and on.
https://forum.heatinghelp.com/discussion/comment/1782234#Comment_1782234
Often the NEST may charge from the unused AC equipment. Is that equipment dead too ?
109A_5
1
Re: Radiant Heating Pump pulling power, 0 GPM output. Advice Appreciated
Radiant heat in the floors.
Pheraph
1
Re: Help me understand my hydronic heating system - air lock?
Good job on the pinch plier hack.
Is this an upstairs zone. Could it be you don’t have adequate fill pressure. Those dual gauges are not always so accurate. Bump the fill pressure. 5 psi or so for a test. Or screw a pressure test gauge on one of the other purge valve to confirm pressure
Is this an upstairs zone. Could it be you don’t have adequate fill pressure. Those dual gauges are not always so accurate. Bump the fill pressure. 5 psi or so for a test. Or screw a pressure test gauge on one of the other purge valve to confirm pressure
hot_rod
1
Re: Main Vent Replacement
To start off, replace each old main vent with a Gorton #2. Add more venting if needed.
Re: Two quotes for combi boilers for radiant and DHW
@ThinkpadUser7 said:
I'd go with either installer as their work looks clean. Make sure they follow the manufacturer's instructions and insulate their pipes.
I'm not too concerned about hot water production, though I was curious about the significance of a higher minimum.
The IBC CX combi and the Lochinvar Noble combi (floor or wall mounted) would be good choices. Either their small or midsize models would suit your needs. The midsize gives you more DHW and would modulate down comfortably.I'd go with either installer as their work looks clean. Make sure they follow the manufacturer's instructions and insulate their pipes.
Re: Thread sealant cure
@ChrisJ
I only used it twice (Expando) and I never had to take an Expando apart. They say on Expando website to have 2 people and put some pressure on the joint with a pipe wrench as if to loosen it then have the other guy tap the fitting all the way around with a hammer.
I only used it twice (Expando) and I never had to take an Expando apart. They say on Expando website to have 2 people and put some pressure on the joint with a pipe wrench as if to loosen it then have the other guy tap the fitting all the way around with a hammer.
