Boiler feed is the fresh or treated water to replenish the water loss though evaporation or leak
It has an internal leak letting water get into it.
A leak on the return or supply lines and the automatic feeder is not working
No. Hydrogen does not leak through glass.
yes and when it breaks your water heater will leak when the steel tank rust.
avoid thrust
The immediate possibility - is a leak in the system somewhere. If the system is leak-proof, the pressure should remain constant - no matter what time of day it is. The only time there should be a pressure difference - is when the boiler is running. Your best solution - would be to get your system checked by a qualified service technician.
A gauge line can leak due to a simple break. It may also be caused from a line tearing away from the plug. The gauge itself may be too large or small for the plug as well.
A low coolant level could cause the temp gauge not to read correctly. A faulty temp gauge sending unit could also be the cause. The coolant leak, you would have to find the source of the leak to determine the cause.
on the gas tie in at least
Yes, the water is getting too hot and is blowing out the pressure relief valve through the expansion tank. You should change this immediately.I don't agree:I am assuming that by expansion pipe, you are referring to the pipe connected to the pressure relief valve - A broken Thermostat won't cause the relief valve to activate. A broken thermostat will cause the boiler to either run or not run as desired. However, a broken (or incorrectly set) aquastat can cause the boiler to run too hot and cause the valve to activate, but if it is chronic, it could be a defective or dirty relief valve, defective expansion tank, a problem with the pressure reducing valve on the domestic feed or (as was my problem) an internal leak in my tankless coil.What is your boiler's pressure gauge reading and what does the Temp Gauge read on a call for heat (High Limit on and off)? Also, put a bucket under the pipe and carefully burp the relief valve to clear out any debris that might be causing the leak.
No, it should not. Unless the connection of the gauge on the motor is damaged in a way as to cause the motor to leak fluid (water or coolant). But just a broken gauge should not affect the performance of the motor.