Sounds like they are cross-connected somewhere. You may need a plumber to check this.
can a home hot water heating system (radiators) be converted to gas fueled from oil fueled heating meathods?
The flow control valve needs an adjustment /replacement
There are pipes that feed from radiator to radiator. Or there can be multiple feed pipes and return pipes, it varies based on installation.
Central heating systems usually heat on a different system from the hot water heater, unless the main heater is a combination furnace/hot water heater. If this is the case, it could be because the outflow of hot water is greater than the ability of the furnace to heat the water.
Many hot water heating systems with radiators need an expansion tank to operate efficiently. The fact you are in Concord NH is irrelevant.
Sorry, this question makes no sense.
Check your gauge to make sure you have enough pressure and your flow control valve is not stuck
The hot water may be turned off to them or the valves could be clogged. Rust and sediment build up over time and stop the flow.
It's because "hot-water" is a compound adjective, modifying "heater". It's not for heating water, it's for heating a house with hot water. There are many types of heaters that heat water, but only a hot-water heater is used for providing heated water for domestic use. A hydronic boiler also heats water, but it's only for use in radiators.The name "Hot Water Heater" is completely wrong for any use. There is no need to heat hot water. IT has always been "water heater". The term hot water heater has just been used for years because people don't realize the difference. It has always been WATER HEATER.The first answer is jibberish and makes no practical sense at all.
If you have no hot water, your heating element is out most likely
turn valves off at up stairs heaters
Hot water baseboard heating is called a Hydronic heating system.