Best Of
Re: Indirect Water Heater not level ?
I usually use 4" electrical box covers for shims. They are cheap (at least they used to be)
Re: Taco SR501 switching relay
I found that out when the zone valve for my air handler coil failed. I robbed the motor from my radiant heat zone to get heat and just left the zone valve open manually. I was using a ZVC-404 and placed a jumper across the end switch terminals. I just figures that radiant zone would overheat for a few days until I got a replacement zone valve motor. As it turns out, leaving the zone valve open manually did not cause any overheating of the radiant zone. That is because the thermostat for the radiant needs to call for heat to operate the low temperature. circulator from the mixing valve. I never replaced the zone valve motor and it is still operating perfectly with no zone valve.
I have redesigned subsequent radiant floor systems since that discovery. Sometimes you need to see it (experience it) to believe it.
Re: Soldering close to soldered fitting
I'd cut on the left side of the press coupling and on the right of the press tee, then piece it back together with 2 repair couplings (maybe even a union?). Start with the left side of the tee and work your way outward, minimizing the heat on the existing sweat fittings. As long as you have everything fluxed properly and can control the heat, there shouldn't be any concern with the existing sweat joints.
GroundUp
Re: Taco SR501 switching relay
couple of techs already mentioned it.
Protocol, thermostat to ZV, end switch from ZV to RW on SR50, and end switch on SR501 to TT on boiler.
Re: System Sizing
Pipe the boilers in PARALLEL with primary/secondary manifolding. Piping them in series will give you all kinds of grief.
Re: System Sizing
primary secondary piping is how that is piped and how I would pipe two boilers
Do you could run either/ or, or even run both together for full output of 300k
Primary loop would be 1-1/2”
Boiler piping 1-1/4, manifolds 1-1/4”
hot_rod
Re: Refurbished radiator making bird noises. Not vent?
@BobC i think this was it. I also tightened it way tighter than I typically would ever do for a vent (probably risky). No screeching on this last test. I also think due to factory variation or something the vent-rite just couldn’t get in there snug enough but the MOM seems to be working.
Tezak
Re: Refurbished radiator making bird noises. Not vent?
@Tezak Good news, looks like you are on to finding the source of the problem! Good thing it isn't a hole/crack somewhere else as that would be much larger inconvenience.
Although it is annoying to get a refurbished radiator that you need to put some effort towards, a little extra teflon is probably better than shipping it back and forth for another one.
I'd go for some thick teflon tape and as others have said….go nuts with it. Maybe some pipe dope too for good luck.
