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Re: The Case of the Snapped Relief Valve, This weeks case for Friday
@EdTheHeaterMan I swear to goodness that my very first thought was a kid on a tricycle riding past it and hitting it with his rear wheel. I guess we both must have had lots of playtime in basements!
Re: Heating Load - Rules of Thumb
So what is that conversation like?Heat loss calculations matter less when using a modulating condensing boiler, the whole point of which is to load match using integral logic and a regulating gas valve.I can agree with some of that, but managing expectations during the bid and explaining what the system can and can not do is important too. I'd explain what the system should do at design temp. Just like I would explain for AC that if the design temp is 95°, that means your house is expected to maintain 75° @ 50% RH
And while I'm at it, I absolutely believe there is something to be said for adding a significant fudge factor. A building that can't heat because someone likes to open a window at night, some exhaust fan is left on too long, or some abnormally cold and windy weather sticks around becomes a problem far beyond overshooting your heat load by 20% and being prepared for unforeseen conditions. I've never gotten a final payment because my calculations were dead on. I've had payments withheld because I can't maintain 74° on a weeklong stretch of single-degree weather. Try fixing that once the system is in place.
"Mr. Client, I'm going to install this system for you and it's very close to meeting the needs of what we expect to see in terms of winter weather. However, you should be prepared for it not to meet your expectations on some very cold days or some other times that we're not thinking of at the moment and that I can't explain to you in this conversation. Sign here."
JohnNY
1
Re: The Case of the Snapped Relief Valve, This weeks case for Friday
There are different kinds of PRVs, some with diaphragms and some without. I'm trying to visualize what could cause that, but mystified as to how the discharge pipe was with the top of the valve, lying on the flr since the discharge tube is connected to the lower part of the valve. Could be a cracked housing.
Myself, I tighten a PRV until it cracks and then give it one more turn. Works for me.
Myself, I tighten a PRV until it cracks and then give it one more turn. Works for me.
Re: Correct placement for radiator vent?
I'm sorry it was a real knee slapper. Funniest I've heard in years!
ChrisJ
1
Re: Wall heater doesn’t kick on
Well, I was right about something, finally. Be sure and tell my wife.
Re: Oversized Boiler
The original installer had a Thang for putting his Gate & Globe Valves upside down. Ok...As long as they hold right? Mad DogPumps also
hot_rod
1
Re: Location of F&T Valve? Identity of Radiator Thermostatic Traps?
Am I viewing this piping correctly?:
- 2 boiler risers used with one-takeoff in between that splits into two mains A and B. No equalizer.
- Mains A and B reconnect at the ceiling and return to the boiler as A/B with vent at end.
- Another line (blue) returns to the boiler (radiator return?) also vented at end.
I don't know much about 2-pipe systems, but this piping arrangement seems odd to me.
- 2 boiler risers used with one-takeoff in between that splits into two mains A and B. No equalizer.
- Mains A and B reconnect at the ceiling and return to the boiler as A/B with vent at end.
- Another line (blue) returns to the boiler (radiator return?) also vented at end.
I don't know much about 2-pipe systems, but this piping arrangement seems odd to me.
Chris_L
1
Re: How much do you depend on your wholesaler for technical advice?
We will ever so often need advice from our main forced air etc. suppliers but that's our main product so we are pretty well versed in it. Boilers, on the other hand, we often take advantage of our boiler supplier's vast experience and he'll come to the job if we have a problem. We took out a Burnham streamer piped like gravity hot water and did it right. Looked great and customer was thrilled with how fast and how evenly it heated. He came buy and gave the installers some pointers.
My father always told me, "In the land of the blind, the one-eyed man is king."
JohnNY
4
Re: Combustion analyzers
As soon as i see elevated levels i pull the probe out ! I personally like our Testo...Very easy to change the sensor without having to send it in for service.Never pull out...but if you do...don't shut it off until it completely purges.
