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Re: Summer job stories
Yep..once they eat something bad...they are screwed! Asbestos...turned my favorite Thoroughbred Gelding El Bombay's face permanently white...took the pigment right out in two days after ingesting it in the stall when another horse 🐎 exposed it with a kick through the wall. (Few people realize how deadly and dangerous it is working around ALL horses, but Thoroughbreds are the most wild and unpredictable. Eating too much grain...My pop taught me all this. He said you MUST keep the barrel tops on of grain to keep rats 🐀 and mice out, but even more important was so that a loose, wandering horse wouldn't get in to it. A
Horse left to his own druthers will eat, and eat, and eat (thus the expression 😆 eating like a horse!) Till he keels over in pain. If you can't get him to pass it quickly, he will burst his intestines with the dry grain swelling and die! The last thing a Horseman will do is TRY to get him up, string his head up high over a barn beam, almost totally vertically (kissing the sky) and force gallons of mineral down his gullet, usually 😄 with some Scotch, Bourbon, even Rum water was left over from the night before.. They fought you less and got them tipsy 🤣 which relaxed them. This was no joke and the whole barn would gather around watch & help. If this morphed in to Twisted Gut, the last resort was invasive surgery. They didn't stand still for this or take it lying down, flipping out every few minutes and launching themselves airborne to try to get their tied up head free...1200lbs of Horse exerted tremendous force, thrust and torque as the broke halters and heavy ropes...what a seen. I miss my 🐎 Horses mad Dog
Horse left to his own druthers will eat, and eat, and eat (thus the expression 😆 eating like a horse!) Till he keels over in pain. If you can't get him to pass it quickly, he will burst his intestines with the dry grain swelling and die! The last thing a Horseman will do is TRY to get him up, string his head up high over a barn beam, almost totally vertically (kissing the sky) and force gallons of mineral down his gullet, usually 😄 with some Scotch, Bourbon, even Rum water was left over from the night before.. They fought you less and got them tipsy 🤣 which relaxed them. This was no joke and the whole barn would gather around watch & help. If this morphed in to Twisted Gut, the last resort was invasive surgery. They didn't stand still for this or take it lying down, flipping out every few minutes and launching themselves airborne to try to get their tied up head free...1200lbs of Horse exerted tremendous force, thrust and torque as the broke halters and heavy ropes...what a seen. I miss my 🐎 Horses mad Dog
Re: Draining sediment from my indirect fire tank
Mine is piped the same way, cold inlet at the drain valve. At least you have another fitting with a valve on the other side down low. You will never get any sediment out of the valve on the inlet, all the water you get will be coming from the cold supply.
If the fitting on the other side at the bottom on the other side is not the boiler coil try it and see what comes out
I am in the same boat with my Bradford indirect, the only way I can get a good back flush is to shut the cold supply off to the tank and back feed the hot side by putting a jumper hose from cold to hot at the washing machine connection
If the fitting on the other side at the bottom on the other side is not the boiler coil try it and see what comes out
I am in the same boat with my Bradford indirect, the only way I can get a good back flush is to shut the cold supply off to the tank and back feed the hot side by putting a jumper hose from cold to hot at the washing machine connection
Re: Draining sediment from my indirect fire tank
There was a product called a muck vac to clean out scaled water heaters. It was about the only way to get ALL the sediment out IMO.
With Indirects, as the coils scale on the outside it takes gallons of acid in the tank to descale them.
There were some tricks to shock the coils, empty the tank, get the coil hot and hit it with cold water. I’m not convinced it did much good.
Smooth coils tend to do better than finned coils in hard water.
Softening helps a lot. Or maybe some of the magnetic or TAC type treatment devices that allegedly keep minerals in suspension.
The two options are remove the minerals before the water enters the tank, or deal with them inside.
A few thousands of an inch of mineral build up really hammers heat exchange. Being a slow gradual decline it often goes unnoticed and homeowners unknowingly adjust their DHW habits to the lower production is my experience.
With Indirects, as the coils scale on the outside it takes gallons of acid in the tank to descale them.
There were some tricks to shock the coils, empty the tank, get the coil hot and hit it with cold water. I’m not convinced it did much good.
Smooth coils tend to do better than finned coils in hard water.
Softening helps a lot. Or maybe some of the magnetic or TAC type treatment devices that allegedly keep minerals in suspension.
The two options are remove the minerals before the water enters the tank, or deal with them inside.
A few thousands of an inch of mineral build up really hammers heat exchange. Being a slow gradual decline it often goes unnoticed and homeowners unknowingly adjust their DHW habits to the lower production is my experience.
hot_rod
1
Re: Summer job stories
@EBEBRATT-Ed
Back in the late 70's PPE wasn't as available as today. A face mask was a dish towel tied in the back. Safety glasses were the kind worn in high school chemistry labs and the elastic was always stretched out, the plastic lens clouded.
Formal LOTO protocols wasn't heard of back then, or at least not to us, but the old man taught me my first safety lesson.
He walked into the boiler room while I was scraping the walls of the combustion chamber- a tight fit, had to belly crawl in.
The combustion blower came on and it was instant blackout. I couldnt belly crawl backwards fast enough and banged my head a dozen times trying. Coughing and spitting. Then the burner was turned off.
When I got out, my father was standing there with fuses in his hand. He said, " Don't make it easy for one of us to kill you. It would give us nightmares for the rest of our lives. Keep these in your pocket when you're in a boiler. "
Back in the late 70's PPE wasn't as available as today. A face mask was a dish towel tied in the back. Safety glasses were the kind worn in high school chemistry labs and the elastic was always stretched out, the plastic lens clouded.
Formal LOTO protocols wasn't heard of back then, or at least not to us, but the old man taught me my first safety lesson.
He walked into the boiler room while I was scraping the walls of the combustion chamber- a tight fit, had to belly crawl in.
The combustion blower came on and it was instant blackout. I couldnt belly crawl backwards fast enough and banged my head a dozen times trying. Coughing and spitting. Then the burner was turned off.
When I got out, my father was standing there with fuses in his hand. He said, " Don't make it easy for one of us to kill you. It would give us nightmares for the rest of our lives. Keep these in your pocket when you're in a boiler. "
SlamDunk
1
Re: Navien combi units
Might want to look at NTI S20W wall hung indirect tank partnered with a wall hung boiler.
EzzyT
1
How efficient is my boiler? No really
So a number of formulas to use to get to efficiency, steady state, the condition where boilers are rated.
Cycle efficiency as boilers do not always, probably seldomly run at steady state.
Run cycle, how many and how long the boiler cycles.
Numbers are probably close to what you see in of oversized boiler installations. Maybe 80% of residential fixed output boilers??
If you have equipment to collect some date, enter your own numbers.
Thanks to Siggy for the formulas and number crunching.
First slide shows cycle efficiency using different boiler rating numbers. Shows run fraction with a 10 minute run time. To the right a 60K load on a 100K boiler at a 40 day. Design of 70°inside 0° outdoor. 15,000 Btu/hr. internal gains, 4.8 KW.
The second slide shows a 150K boiler on a design load 100K application.
20,000 btu/hr. internal gains is everything inside the home adding heat, people appliances, lights, computers, so about 6KW.
A fixed output boiler in a zoned application will see these operating conditions, run fraction for example.
Cycle efficiency as boilers do not always, probably seldomly run at steady state.
Run cycle, how many and how long the boiler cycles.
Numbers are probably close to what you see in of oversized boiler installations. Maybe 80% of residential fixed output boilers??
If you have equipment to collect some date, enter your own numbers.
Thanks to Siggy for the formulas and number crunching.
First slide shows cycle efficiency using different boiler rating numbers. Shows run fraction with a 10 minute run time. To the right a 60K load on a 100K boiler at a 40 day. Design of 70°inside 0° outdoor. 15,000 Btu/hr. internal gains, 4.8 KW.
The second slide shows a 150K boiler on a design load 100K application.
20,000 btu/hr. internal gains is everything inside the home adding heat, people appliances, lights, computers, so about 6KW.
A fixed output boiler in a zoned application will see these operating conditions, run fraction for example.
hot_rod
6
Re: Will converting my heat from steam (boiler) to electric baseboard heat freeze my pipes?
Quite true. And even for a modern house well built and well insulated the figures that are quoted for those strip heaters are wildly optimistic.Square footage is nowhere near an accurate way to determine heating load, especially in an older building not built to modern standards for insulation and air tightness. The actual load has more to do with that and the climate than with square footage.emaydeoh said:@bburd yes just confirmed with our repair man they are running 240v! They are on their own 30w circuit breakers. I honestly think it's just too small for the space. Theres a 6ft one in the living room that is rated for up to 200sq ft of warmth, but the room is probably about 300sq ft and open to the kitchen, so about 500sf total...
Re: New Steam boiler; higher pressure on pressuretrol
@pmj My approach would be to keep the boiler repipe with a 5” drop header, install a 2 stage gas valve triggered by a vaporstat.
EzzyT
3
Re: Simplified Radiant Cooling
I see a need for a control like this as a2whp become more popular. Quite a few variations in Germany where radiant cooling panels are more common.
Rehau has done a handful of large radiant ceiling jobs, I suspect the building automation watches dew point somehow. There were a few radiant panel products at AHR for radiant cooling ceiling installations
Taco has chilled beams at their building in a humid RI climate, maybe they will share the control used.
Head over to the ISH show in Frankfurt next week, I’ll bet you would see many controls like you are considering.🧐
Rehau has done a handful of large radiant ceiling jobs, I suspect the building automation watches dew point somehow. There were a few radiant panel products at AHR for radiant cooling ceiling installations
Taco has chilled beams at their building in a humid RI climate, maybe they will share the control used.
Head over to the ISH show in Frankfurt next week, I’ll bet you would see many controls like you are considering.🧐
hot_rod
1
Re: Installer has let new cast iron boiler condense for months.
The only way a bypass could be set is for one condition. That would be all zones open and at design condition. Setting that valve on a mild day with no load on the radiators will not be accurate, as the return blending with bypass will be higher..
If the boiler at design cannot get up over140 or so SWT, there is no way that bypass can increase the boiler operating condition. Thermal equalibrium, the mass of the system is in charge, not the aquastat on the boiler.
And as zones open and close that bypass mix will change as it cannot respond to varying loads.
If it is worth repiping it is worth doing it correctly
If the boiler at design cannot get up over140 or so SWT, there is no way that bypass can increase the boiler operating condition. Thermal equalibrium, the mass of the system is in charge, not the aquastat on the boiler.
And as zones open and close that bypass mix will change as it cannot respond to varying loads.
If it is worth repiping it is worth doing it correctly
hot_rod
2