Best Of
Re: Partially Replacing Hot Water Boiler with Furnaces
You most likely have an old gravity parallel direct return system. That means the for every radiator you remove you need to cap off both the supply and return pipe to the radiator that you remove in order to fill the system up with water to turn the boiler back on. If removing radiators is what you are asking about.
If you are talking about the rest of the potable water piping in the building, then you may want to use space heaters in the rooms that have pipes that may freeze.
Re: How to- controls question
That's expensive wire, $3.95 / ft. more for the longer version. I wonder how that sensor would hold up in that car wash environment.
109A_5
Re: How to- controls question
I think tekmar has more general purpose controllers that be programmed to do it all in one control.
mattmia2
Re: Shopping for new mod/con, set me straight!
As far as quality, The Rinnai unitsa verg good..mad Dog
Re: Mega press for steam question
I wouldn't use either one on steam if I had the choice.
Re: Mega press for steam question
This is another case of "just because you can, doesn't necessarily mean you should".
Re: Mega press for steam question
I've used 3" mega press for a few repairs on a main. With this job it was the best option to avoid a major project. You have to specify the right fittings and ensure the pipe is supported correctly. It has its place, just not fond of using it for every fitting during a changeout. 2 1/2 and 3" mega press flanges and couplings have saved the day on a few jobs to make the transition to near boiler piping where threading in place would not be practical or increase the cost for the customer by a decent amount.
Re: Mega press for steam question
Not a good idea to use MegaPress on steam, since it's too easy for the fittings to sag over time. And we know what that causes……………
Re: Proactive steam valve replacement
@Jamie Hall They were used on non-vacuum systems as well, Jamie; but Hoffman’s intent was to eliminate the valve packing so that air couldn’t enter on either a mechanical vacuum system or a vapor-vacuum system. They told me that back when I was their rep.
