If the boiler is feeding the tank as a storage tank then you need a good quality TEMPERING valve and a 27" heat sink loop.
If the tank is a stand alone appliance for domestic hot water have the Aqua-stat checked
Of course it can fail. Look at the temperature of the water in the boiler, turn the stat up and down. You should hear a slight click when the temperature setting and the boiler water temp are appx the same if you do, the stat is probably good. You can verify this with a voltmeter.
If you are using water and not steam there should be a temperature controller mounted in the side of the boiler, that is where the start and stop point of the boiler is controlled.
Boiler should be set at max temperature of 180 degrees for proper heating temperature. 120 degrees is temperature for domestic hot water, not heating temperature. Yes, to answer question, but not recommended.Improved answer. -If you are referring to the hot water heater that gives water to your hot faucets this is not generally known as a 'boiler' (a boiler is for hydronic heating) Your faucet supply can be turned down to any setting between 110 and 160. Normal setting is 130-135. with small children it should be 120. - on most heaters there is an adjustment knob on the gas regulator or the lower electric element . It's well marked and easy to adjust.
Overheating of water wall tubes may cause crack. Boiler will damage due to boiler drum level goes down.
The water is blown out of the boiler with some force by steam pressure within anticipating those particles will settle to the bottom of the boiler.
the effective range in which it can be used; ie the temperature ranges of operation
clown fish cannot actively cool down their bodies, they are poikilotherms. their body temperature is dependent on the water temperature and therefore so is their metabolism
Call the water board, if you can't turn the pressure down on the boiler.
My boiler has just broken down. Where can purchase the best water heater on the market?
Blow down is done in the boiler in case level is high in the boiler
ANSWER: If it's a steam boiler: Once a month. If it's a forced hot water boiler-You don't have to. You'll only be adding more air into the system causing more noise.
For a while IF the boiler has an automatic low water cut off and other safety devices but if any fail you will have a melt down and an explosion