Best Of
Re: New House, New Problems- Introduction and seeking help on new to me steam
The old runout that used to go to the 1st floor kitchen was cut to about 2 feet and capped. There is one radiator runout after this. This is the only easy spot to thread a vent on, so I threw my new Gorton #2 to see what happens. It takes about 6 minutes from when it first starts passing air to close, and didn't really affect anything as far as I could tell. The ideal place for it seems to be above the boiler, which is copper pipe.
The gurgling rad was just barely pitched, I added some quarters underneath and it seems like it has a proper pitch now but it still gurgles. The valve seems pretty standard.
The other rad that gurgles(1st floor entry, last in the series) has this piping artistry:
wwrenchh
Re: How to delete boiler coil and replace it with a HPWH
it doesn't need to be exactly 140, that is more of a legionella guideline temperature
Anything over the useable temperature of 110- 120, you get the extra capacity with higher tank temperature
Some plumbers run a line before the mix valve to the dishwasher
hot_rod
Re: Copper pipe radiator design
Come to think about it, why copper if I can use black pipe…
Re: Banging Hartford Loop
Steam goes down the equalizer until it hits water. The air rises up and goes out with the supply steam. If the equalizer stayed full of air it would be cooler and they are always steam hot.
Re: Slant Fin VGH150
oh, it is a mod con combi. maybe you can get the hx from a distributor or fit another hx in there.
mattmia2
Re: How to delete boiler coil and replace it with a HPWH
This is a good introduction to HPWH and some of the lessons learned so far regarding installation and performance.
HPWH will not perform the same as a gas fired tank. Nor will they perform like a tankless coil or a tankless water heater. They are all unique in the way the operate and provide DHW. It's good to know before you go.
It sounds like you may have a good application. Enough room volume and a cast boiler to grab residual heat from.
Be aware of summer use, the heat needs to come from SOMEWHERE, for the heat pump to "pump"
They discharge cool air, around 45°F. So do't place one next to your bed :)
hot_rod
Re: How to delete boiler coil and replace it with a HPWH
agree 140 is pushing it pretty hard
In Idronics 33 we show 3 options for elevated temperature operation These examples come from A HPWH advisory group that is studying various options. The elevated temperature concept is mainly used to leverage off peak rates
With DHW, it as always comes down to what the customer needs, wants, or is used to. I would guess most homeowners have no idea what their dhw use is
hot_rod
Re: How to delete boiler coil and replace it with a HPWH
Hi, I've been studying this with Gary Klein and indeed, the cold output. done wrong will damage other equipment or cause moldy areas on walls. Even the manufacturers are taking notice of this. Also do make sure that the in and out airflows from the HP do not mix, or you cut performance by pulling in cooler air.
Yours, Larry
Banging Hartford Loop
Hello to all. Has anyone actually encountered a banging Hartford loop ? All of us here were taught about the importance of a short nipple on the Hartford loop. I do strictly residential work and I have seen endless Hartford loops, with nipples of all sizes and lengths. I have never ever encountered a Hartford loop that had any banging noise. On one of the more recent boiler installations that I did, I deliberately installed an excessively long Hartford loop nipple. It was a mixture of convenience and experimentation. It was something like 18 to 24 inches. Not a sound. Zero banging in the Hartford loop or anywhere else for that matter. Would love to hear about everyone else's experiences.
