Best Of
Re: Cleaning HVAC Ductwork?
The techs who "clean" a boiler without cleaning should be happy with low sulphur oil. My experience is that boilers have much less accumulation of dirt than they used to. I find most boilers with very little dirt after several years and some hardly need a vacuum after 8 yr. My own oil boiler I installed 7-8 yr ago and haven't opened it yet.
JMWHVAC
Re: Cleaning HVAC Ductwork?
I'd assume he shook his head in disappointment and went about his business.
ChrisJ
Re: Help with screw nut
The nut is super tight because the screw holding the Z dimension plate snapped. Once the assembly comes out, the Z must be reset. And I'm assuming you don't have the tool to do that… and don't know what a Z dimension is.
Where are you located? Even with the limited frame of the picture, the oil and soot shows that the boiler needs a qualified oil tech.
HVACNUT
Re: Multiple temperatures on single zone with single circulator pump?
what about using panel radiators and running one low temperature system. The lower the boiler operating temperature the better the efficiency. Even with cast or non condensing boilers
Do you have a heatloss number for all the rooms? That would help size and select heat emitters
In your drawing how would the radiators return to the “blue” return piping?
hot_rod
Re: New thermostatic radiator valve on old radiator fitting?
You have a point there, but do you want to have to access the room any time or should I say ALL the time. The point of the TRV is that it is automatic. So the labor to install a manual valve or a TRV is identical for you. the only cost difference is the price of the valve and actuator. I like the idea of the remote actuator with the 6 foot capillary tube where you have confined space for the valve to be installed.
Re: Multiple temperatures on single zone with single circulator pump?
I think you will have problems balancing the system. I would use two pumps 1 for the radiant and 1 for the base board.
Re: Micron rise with respect to valve core removal tool
agreed but when breaking the vacuum use the refrigerant for the system.
pecmsg
Re: Preferred gauge glass cutter
Thia is the way it works for me. Bring a spare glass and you won't need it the first cut will be good. Don' t bring a spare and the first one will shatter.
Re: Purging air
As Bob has said that silver automatic air vent MUST BE removed. I am sorry I missed that at first.
The water cushion in the steel compression tank is gone and the excess water in the steel compression tank must be drained out of it to allow it to work properly and create the point of no pressure change.
It's better to drain the boiler and then crack the drain o tank valve in the steel compression tank to allow it to be filled with water to the right level. When there is nothing but water coming out of the drain-o-tank valve you need to shut it off and shut the water fill valve off.
Afte that you can restart the boiler.
leonz