...and what's really wierd..is that my friend seems unconvinced that I am giving him solid advice and that his plumber is wrong. He actually got angry at me for telling him that he's making a mistake.
Seems intelligent to me. I quoted what you typed.Think, then ask an intelligent question.
If the system has been plumbed in correctly then a pressurized system should have zero water leak but even if it does you need to open a charging valve to charge the system back upto at least 0.6bar to get the pump to kick back in and the system run. even if you left the well water on, the system would not charge it's self back to the recommended pressure.Now thats a reasoned alternative. However the boiler does need make up but the pressure tank will supply make up for months if the pressure doesnt bleed off from leaks. The well pump doesnt need to stay energised for the boiler makeup to function off of the charge in the pressure tank. Boiler make up rarely requires a cup full of water, does it?
If the system has a pressure dial built inot it then it's a pressurized system and 99% of these systems will not run if pressure drops below 0.6bar. If they system loses that kind of pressure to drop below 0.6bar then the system need to have a pressure test done and the leak found.This boiler is fairly modern...I doubt it will ignite with low water in the system.
I have never heard of a automatic make up but if it has expansion tank then it's a presurized system. The system when upto pressure should be disconnected from the main supply so that if the check valve decides not to work then the heating water wont get pushed back into the mains water line and contaminate the mains drinking water or if someone turns on the refil valve it wont keep filing up the system to what ever mains pressure you have and cause an explosion.The system is equipped with an expansion tank and automatic make up.
Based on the tone of this response, any thoughts on the subject I may have I will keep to myself.Well I could certainly install the two valves necessary to winterize the system..you probably couldn't. The point to any sentient individual is that the plumber says that it can't be done, which is total BS. Now if you have anything of value to contribute to the thread please do.