Best Of
Re: steam vs vapor system
In addition the boiler should be sized to that 80% or so that they are designed to fill the emitters and a more realistic pickup factor should be used rather than the large 30% baked in to the boiler ratings and that will make the pressure a lot easier to control or possibly even self limiting.
mattmia2
Re: What do you think the future of our industry looks like?
Having a couple of grade school age kids, STEM is pretty light on technology. Particularly as it would relate to the skilled trades.
My kids learn those skills at home.
Re: Wiring Diagrams and Relays.
This is a simple "take it one at a time" exercise.
Forget the zone valves for now. The First step is to determine how the circulator operates if there was only one thermostat in the system like a one zone house radiator system. That is usually built into the heater itself. Here is the Weil McLain simple diagram that turns on the burner (Green) and the circulator pump (Blue) with the call for heat from the thermostat (Red)
Here's one for an oil burner combination aquastat relay.
See how the thermostat (Red) operates both the burner (Green) thru the limit and the circulator pump (Blue) to move the water thru the system? Easy Peasy!
Now lets look at a zone valve manufacturer's diagram
See how the thermostat (in your case the water heater aquastat) turns on the zone valve? Once the zone valve is open the end switch closes and will send the thermostat call for heat to the boiler control. You don't need a relay to do that. The zone valve end switch is all you need to operate the burner and the circulator.
Here is your diagram if you have Honeywell V8043 type zone valves
Hope this diagram helps
Re: Faucet Washers
Sexauer made fiber reinforced bib washers. I also liked their monel bib screws which had a dab of antisieze compound on the threads. The Internet killed Sexauer.
Re: heavy duty power relay
Here's an interesting book about relays, or at least the contacts thereof:
(At 51 MB, it's just a touch too large to attach, sorry.)
ratio
Re: Is it OK to use old Uponor PEX?
Hi, It's a bit off topic, but why not go with expansion fittings? You get less flow restriction with them.
Yours, Larry
Re: She canna take any more, Cap'n! She's gonna blow!
I also have a large hydronic system and used a configuration with two wall hung Amtrol EX-30 units versus a single large one. Easier to service and source replacement tanks. Be sure to install valve so you can easily isolate for maintenance.
PC7060