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Two years ago, a forced draft Arca Ecofat 32 FR boiler was installed (heating only), with a 3-way servo-motorized valve and a 150l external Vaillant boiler. Central heating circuit settings: 56 degrees and 1.3 bars. There are also 2 radiator distributors from Jurgen Schlosser Armaturen installed, 1 with 2 ways (ground floor) and another with 5 (first floor); on the flow there are flow meters now all set to 1 l/min, and on the return there are valves with actuators (the actuators have not been installed yet). Heating was wanted in zones/rooms - the radiators in the upstairs bathroom and the upstairs hallway will be permanently open, plus 2 radiators on the ground floor (kitchen and hallway) - so a bypass for the distributors was not installed. The pump in the boiler is a classic one (CIRCOLATORE 6M ATTACCO 1" MONO) and it has been running for 2 years on the whole system. I don't know what problems there will be when I install the actuators, the room thermostats and the control unit, all Jurgen Schlosser Armaturen Blue Line.
On the ground floor there is a circuit with 5 radiators "in series" (living room) - the first of them, the one next to the technical room, has now started to make a regular rattling noise, after the boiler is switched on to heating, which lasts about 2 minutes. At the same time, when switching to heating, the 3-way valve seems to sometimes make a louder or less loud "clacking" type noise ( clank ), with vibration in the flow pipe that goes from the boiler to the radiator distributors. The (external) 3-way valve probably needs to be changed immediately. I have bled all the radiators - many "beads" (like in a water pipe
) in the container where I took a little water from the air vent. I should mention that the distributors do not automatic air vents were installed, but classic ones, like on radiators.
I am attaching some pictures. Any suggestions for improving the heating "system" are very welcome. THANK YOU!
On the ground floor there is a circuit with 5 radiators "in series" (living room) - the first of them, the one next to the technical room, has now started to make a regular rattling noise, after the boiler is switched on to heating, which lasts about 2 minutes. At the same time, when switching to heating, the 3-way valve seems to sometimes make a louder or less loud "clacking" type noise ( clank ), with vibration in the flow pipe that goes from the boiler to the radiator distributors. The (external) 3-way valve probably needs to be changed immediately. I have bled all the radiators - many "beads" (like in a water pipe
) in the container where I took a little water from the air vent. I should mention that the distributors do not automatic air vents were installed, but classic ones, like on radiators.I am attaching some pictures. Any suggestions for improving the heating "system" are very welcome. THANK YOU!
