Hydronic Heating

Posts Tagged ‘radiators’

I live in a small house with hydronic heat. The original homeowner moved a radiator from the master bedroom to the basement bathroom directly below. All the original piping was used, just diverted downward with tees and vent plugs installed in the upward facing tee outlets.

Can I install another radiator in my master bedroom fed from the same tees? (removing the air vents since the second radiator has them built-in and running pipe back upward) This would mean the same supply and return would feed two radiators on two different floors.

It’s a single zone house. It’s a "monoflow tee" type system with both supplies and returns feeding into the same loop.

I want to purge my hydronic heating system by fast-filling it and draining it simultaneously. I need to cool my cast iron boiler so I don’t crack it and completely ruin my day. The temperature of the water main is around 40°, and I am wondering how cold the boiler has to get. I have read one manual that recommends a temperature change of no more than 40°, which would make the target temperature 80°F, but the same manual also says that this rule is sometimes changed to 20° temperature change

OK, handymen, its a 1951 American Standard Arcoliner. Whaddayathink?
Here’s that manual I found http://www.smithboiler.com/modules/news/upload/%7B27A60D51-C198-453F-BAD7-67A71B1D4176%7D_Thermal_Shock_Publication.pdf
By purge I mean purge air bubbles
The idea here is not to change the water, necessarily. The point is to use the fast fill to shoot water through the lines, hopefully driving out trapped air, which is hampering the efficiency of the heat transfer at the radiators.

To reiterate, the actual question is: In your experience, how much difference can there be between the temperature of the boiler and the temperature of incoming water before you risk cracking the cast iron?

i have two zones (1) is cast iron radiators and the other is hydronic baseboard. Iset the fill valve to 12psi cold but it is still blowing

My wife and I are in the process of shopping for our first house. We found one that is almost perfect for us, but I'm a little worried about the furnace. It's pretty old, but looks very well maintained. The type of heat is listed as "hydronic" which means the furnace supplies the multiple radiators around the house. I have no experience with this type of furnace. Any information about them would be appreciated.

I have hydronic finned baseboard radiators throughout the 3 floors. I recently replaced a broken Bell & Gossett circulator with a Taco 007. There are 3 return pipes (3 zones). Two of them heat normally, while one return pipe is cold or just warm sometimes. There's little to no heat in the upstairs bedrooms. I purged any air from this zone and it seems to have helped a little, but we're still not getting heat like before. Help!

I have a hydronic boiler and need to temporarily take out one of the radiators. None of the radiators have lockshield valves – I see the thermostatic valve, but on the other side there is just a 90 degree angle pipe. Which way does the water enter the system and what is the best way to take out one of these radiators?

Thanks,
Amir

I rent a place with hydronic heat.
Gas furnace, single pipe loop with radiators
tapped off, cartridge type circulator pump.
The pump became noisy, and the system was
'short cycling` and not heating effectively.
No air when bleeding the radiators.
Thinking the problem was the circulator, I
drained the system and checked the pump.
It looked fine, so I refilled the system and turned
it back on. It now works properly.
Why?????
Lawnrider;That's what I thought.
Pump is on a horizontal pipe which I checked
for debris.
Rob K. Looks like you take the cookie.