Best Of
Re: Discolored hot water / HTP PH 76-60 hot water heater installed 5 months ago
I think the meter in the pic is set to voltage? Reading just under 1 volt. Adding salt to the water would increase conductivity.
hot_rod
Disgusted by today's electricians, Today's rant
At one time I had about 12 licenses in different states, electrical, oil burner, gas fitting, sheet metal etc
But unfortunately, now licenses mean you don't know anything. Its becoming a joke. being a licensed electrician used to mean something back in the day. now it means your a hack.
I feel bad for HO calling contractors who not only pay contractors huge $$$ but the work is so shoddy. I have been on the other side for 50 years but I can't blame any HO for doing his own work now.
Long story short, a relative called me who I had re-wired their 1915 house in the early 80s, they have had electricians their doing work over the years since then and have a few issues. One issue is a nasty dirt floor damp crawl space. The other one is very shallow old-time framing that requires the use of shallow electrical boxes with limited space.
So even though I don't really do any "real" work anymore I was curious to take a look. I still have my electrical license and go to the update classes (don't know why).
What I found:
Electrician added new kitchen lights and an outdoor spotlight and wired them to the 20 amp kitchen small appliance branch circuit which has never been ok.
He mounted old work metal boxes by driving sheet rock screws though the back (there's 3/4 wood paneling on the other side of the wall so i am ok with that) but he "grounded" the box by wrapping the wire around the sheetrock screw. NG.
One of the shallow wall receptacle boxes I had installed back in the 80s he extended the circuit coming out of the box. The box is not large enough for the added wire and wire nuts so he hammered the receptacle in to the box crushing the wires which eventually shorted.
He added an arc fault circuit breaker to the panel for an existing circuit that he extended. When I looked inside the panel the neutral pigtail was not connected to the neutral bar. This should have left the circuit with no neutral but yet I had 120 on the breaker and the circuit worked.
Turns out the circuit has the neutral and ground shorted together somewhere. I ran out of time to track that down, but I disconnected that portion of the circuit (with the short) hooked up the AFCI breaker correctly and the breaker and the rest of the circuit is fine.
Because of the shallow boxes and wire fill problems with the smaller boxes you end up with more junction boxes in the crawl space than you would like. Most electricians don't want any part of a crawl space and I don't blame them being in the cobwebs, bent over, the damp dirt floor, rocks, rubble, broken glass tracing wire and a lot of boxes is tough. The difference is they will guess at things, and I won't.
I didn't like it when I rewired it when I was 28
I still didn't like it today at 72 but i spent the afternoon down there.
All the original stuff I did is pretty good. Every problem is where someone hacked things up when adding things like trying to add GFCI receptacles into boxes not large enough
Hope I can get out of bed tomorrow.
My curiosity is now satisfied.
Re: Is this a hercules coal furnace ? What is this ?
Me too. My grandparents had one alongside their coal fired gravity hot air furnace.
Re: Replacing pressure reducing valve
but if there is already a trap on the line, you don’t want a second trap
Find where that line ends up. If in fact you add a trap, by code and for proper operation it needs to be vented
hot_rod
Re: Why don't we pump away from expansion tank on dhw recirc systems?
Probably the simplest reason is that as many have implied there is very little if any chance of the pump cavitating, never mind pulling air. It would be a very rare domestic water setup which had a static pressure less than around 20 psig; 30 psig would be more normal. With that much static pressure you would need 60 feet of head loss or more between the expansion tank and the pump inlet to get in trouble. Not going to happen…
Re: Need help with new install of radiant with Buderus cast iron boiler
A Tekmar 256 will provide ODR for the boiler. Using the manual 4way valve that hot_rod posted will allow you to mix down for the radiant.
Set the ODR at 130-160* to begin and adjust the 4 way to achieve 75-100* going to the radiant. In other words, a parallel shift. This is a suggested starting point, some tweaking may be necessary.
Leave the indirect in the boiler loop, but you should add a domestic tempering valve to prevent scalding. You won’t need to hold the pump off on the boiler side if you let the indirect’s aquastat call the boiler on. Let your room thermostat control the radiant pump.
Pipe like this:
The indirect would be piped after (down stream) of the boiler pump, but before the closely spaced Tees. The expansion tank should be before (upstream) the boiler pump. This is also where you want your air eliminator (MBR).
Ironman
Re: Disgusted by today's electricians, Today's rant
I only did HVAC work, mostly oil burners, when I started in this trade. Many of my customers were shocked when they found out I didn't have an electricians' license.
Re: Disgusted by today's electricians, Today's rant
It's rough out there, and getting rougher. Two days ago, I had to rewire a new 277 volt exhaust fan where Sparky had taken the feed from one leg of the old 3 phase power to the old starter, fed from the switchgear—but then picked up the neutral from a nearby panel. This is the guy who kept pulling off this job to go work in a hospital.
Whiskey Tango Hotel.
Re: 60 PPM outside of "snowman" boiler
gA
Gas companies are #1 on my CO ignorance list. A fart could make his meter read 60ppm. The test must be done in the flue ahead o dilution air. Any other test is useless.
Re: Hodge Boiler Plant Photo (1890s)
Sorry to derail further, but I just sat down and watched the second half of the Bulding of the Eiffel Tower on television. As I understand it, a top notch riveter could install 1700 rivets per day (up to 12 hours). There are two and a half million rivets in the tower. Riveters were paid seventy cents per hour, almost double what riveters received at other less glamorous sites. They used sixty-six tons of paint when they repainted the tower for the nineteenth time recently. I apologize for the almost worthless information.




