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Re: Just to stir the pot...
Oddly enough, the one thing that is least likely to be affected by lowering the Hz, is an inverter heat pump. Their whole schtick is lowering the Hz. That's why you generally don't see and can't find their real efficiencies as they have to be tested and listed while locked at 60 Hz as that is the standard in the US. It's like rating a gas fired boiler's efficiency under the least efficient circumstances possible. And even then the inverters are putting out far more than you put in despite the claim "You can’t put in less and get more than was put in impossible unless just on paper "
GGross
1
Re: Please Fact-check Retired Plumber's Advice Re: TRVs & Lockshields
I'm with Hot Rod on these issues. While we certainly have installed many TRVs, they are rarely a quick and easy install. The benefits may or may not be worth the cost of the labor and materials. This is especialy true if the original designer was good at sizing the radiation.
One other thing to consider, is that we've noticed with older hot water systems (made up of mostly steel and iron), that metallic particles occasionally end up on-or-in the seat of the brand new valve.
One other thing to consider, is that we've noticed with older hot water systems (made up of mostly steel and iron), that metallic particles occasionally end up on-or-in the seat of the brand new valve.
Re: Navien NCB-H 240 - Honeywell T-Stats
Hello @Chris_102,
I suspect there is some language translation issues. If you use the connections in the second image, I would verify the power and functionality.
https://www.navieninc.com/downloads/ncb-h-installation-and-operation-manual-en
I suspect there is some language translation issues. If you use the connections in the second image, I would verify the power and functionality.
https://www.navieninc.com/downloads/ncb-h-installation-and-operation-manual-en
109A_5
1
Re: Peerless Coil Replacment
Agree with @HVACNUT
If the coils were bad and leaking it would overpressurize the boiler water (heating side). If thats not happening the coils are ok and not leaking. Remove the coils and replace the gaskets and retork. Clean all surfaces and use "neverseize " on the bolts.
If the coils were bad and leaking it would overpressurize the boiler water (heating side). If thats not happening the coils are ok and not leaking. Remove the coils and replace the gaskets and retork. Clean all surfaces and use "neverseize " on the bolts.
Re: Peerless Coil Replacment
It's not the coils that are "shot", it's the coil gaskets. And he should have noooo problems finding them. Should be a fairly easy fix, but time consuming. Looks like PP fittings. No way should it look like that after 4 years, or ever. The bolts need to be torqued at every annual maintenance. That's what seems to be happening here. It's also possible there's still some remaining old gasket still stuck to the cast iron block so it should be checked for smoothness when the coil is out.
Indirect water heaters are definitely more efficient than a tankless coil. But even if you go that route, the coil gaskets still need to be replaced.
Indirect water heaters are definitely more efficient than a tankless coil. But even if you go that route, the coil gaskets still need to be replaced.
HVACNUT
5
Re: Would a Mini Split be a good dehumidifier in a basement?
My thinking with a mini-split is it is more efficient than any standalone or whole house dehumidifier.
I don’t think there’s any reason to think that: a heat pump and a dehumidifier both use refrigerant to create a cold enough coil to condense water in the air. Ductless heat pumps can sometimes have high SEER ratings, but that’s usually because they use a higher temperature coil that hardly removes any moisture. The ductless heat pumps that remove substantial moisture are necessarily less efficient. 
Re: Feasibility to Relocate Steam Radiator
I would suggest trying to use 90° elbows in the horizontal run. It give you more flexibility with slope, swing joints, and alignment. I moved one in the process of remodeling my daughters bedroom and this is how I did it. So far quiet as a church mouse. The vertical riser is 1" pipe, but I upsized all the horizontal pipes to 1 1/4" to help ensure adequate room for the steam and condensate to coexist.
KC_Jones
4
Re: The Philosopher’s Wrench
Mad Dog_2 said:I remember when they first came out 1987 or so...They were G.F.I...."C" came several years later. They may be a pain, but if they save you from electrocutions...All good 👍.. Were lucky we didn't have to work with100% Steel Drills that were Ungrounded. My Father's generation of Tools....When Black & Decker were very high qaulity.
I would always lay down wood planks or a plastic milk crate when operating power tools in water 💧 while most plumbers thought It was unnecessary 🙄. I was called OSHA man ...ha ha 😂 🤣 😆.
It wasn't until years later, I watched Local 3 Electricians working on high voltage with heavy rubber gloves and boots that the light bulb 💡 went off in my head....Ah Rubber boots...insulation from shocks... A few years after that, I started seeing that in OSHA films..and only about 15 years ago the term P.P.E.
I wear OSHA man as a badge of honor 🎖 and compliment and I'm a Real Shickelgruver (German for P I.A.) especially with the younger plumbers. I've seen 3 guys lose eyes 👀, men buried alive in an unshored trench, Digits lost (almost lost my Index finger in 9th Grade Metal Shop), Free Falls, lots of hernias, Disc Damaged cutting wheel pieces imbedded in my partner's eyebrow...one inch from his eye...Gave him a face shield "Nah I'm good...I feel stupid wearing that!!" ..not pretty...and almost always...preventable. Mad Dog 🐕
In 1961, Dalziel, working with Rucker Manufacturing Co., developed a transistorized device for earth leakage protection which became known as a Ground Fault Circuit Interrupter (GFCI), sometimes colloquially shortened to Ground Fault Interrupter (GFI). This name for high-sensitivity earth leakage protection is still in common use in the U.S.A.
ChrisJ
1
Re: Just to stir the pot...
@Mad Dog_2 maybe you’re seeing something different than I am, but I’m seeing people advocating for replacing ACs with heat pumps when they break. No big brother, no mandates, just a multi decade process. Similar to how manual transmissions have vanished - it happened over decades.So long as this statement is true, I'd agree with you. Unhappily, at least in some countries, it isn't true (the UK, for example), where it is replace (not keep the backup -- even fireplaces are bow prohiibited in some locations). How long it will remain true in the US is unknown...
