We recently switched from oil to gas and had an IBC DC 20-125 boiler installed. Within days from the initial installation we noticed a loud banging sound when the heat is coming on. The contractor who installed the system came in and identified it as a water hammer and reduced the pressure in the system. For a day or two this appeared to have fixed it but since then the problem reoccurred. The plumber who installed the system is very responsive and has been in multiple times but hasn’t so far been able to pinpoint what the problem is. I was hoping that some of you could have a look at the set up (see pictures) and check if you notice any issues with it.
Thank you for your help.
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