Best Of
Re: Purging 7 Zones Dual Boiler Setup
The Caleffi fill valve will allow 5 gpm to flow, do 1 zone at a time, you have isolation valve and purge valves. That is the only valve you need to turn off.
Wow! with a spirovent on each loop, air should be eliminated within hours if you have any flow at all in the zones.
hot_rod
Re: Steam sight glass
True but the supply should not be coming off the side of the header, it needs to come out the top
Re: Combustion Analyzer Calibration
Testo has had some bad units in the past. I would make them replace it with a new one. I think that would be less expensive than the bad press on the media.
Your unit is bad!
Re: Why does one of my steam radiators only come on on high and bang loudly
Just from what I'm reading I would suspect that there is a belly in the piping leading to that radiator and that belly is full of water, hence the hissing and sucking of air at the vent. You could try lifting the radiator up on some blocks to remove the belly. Or see if you can identify any improperly pitched pipes in the cellar.
Pictures of the radiator from a few feet away would help us.
Grallert
Re: 2 Firomatic Valves
It would be a real shame to replace that Thermopride with a propane furnace. Thermopride furnaces are as high quality as you can get. That furnace could easily outlast most gas furnaces made today.
Re: Shopping for new mod/con, set me straight!
Lochinvar and probably others have adjustments to lessen cycling
Anti Cycling and Step Fire for example. Lock the firing rate to the design load, then use other functions if needed
hot_rod
Re: 2 Firomatic Valves
Thermo Pride is a great furnace. Contact the factory for a company in your area.
I hope I’m wrong but those firematic valves, isn’t the stem supposed to be vertical?
pecmsg
Re: 2 Firomatic Valves
Technician isn't too smart. You take the wheel (handle) off the firomatic valve and tap the stem and it should close.
The other firomatic will protect you in case of fire.
If you want you could do as @HydronicMike said and cut or disconnect the oil lines at the top of the tank. This will break the syphon and you can have the valve replaced with only the small amount of oil in the lines to deal with.
Why you would need a Tiger Loop with the tanks that high above the burner is a mystery to me.
Re: 2 Firomatic Valves
They are spring loaded if that is the question. Pretty strong spring.
@jonathan6
Firomatic valve are installed at the oil tank (for an indoor tank) , where the oil line enters the building for an outdoor or underground tank and at the oil burner.
IMHO the one at the filter does not need to be a firomatic valve it could be a ball valve as it is only needed to service the filter. The one near the tiger loop will suffice as the one needed at the burner.
As I said above if the handle was taken off the firomatic above the filter (it screws right off) tapping the valve stem slightly should close the valve. Screwing the handle back on will open the valve.
Changing the valve with the tank i story above the filter if a dumb idea in my opinion. They could easily cut the oil line near the top of the tank and splice it back together after changing the valve.