Why do you need two boilers for such a system with 30 kw each running in the same time? As mentioned above to all the others well oversized and get a reliable engineer or perhaps donit via warranty
I honestly don’t know, I have asked the subcontractors that built the property and they said they are variable output so will work load dependant or something along those lines.
Apparently the heat calculation for the house was 57kw and the space worked out best for 2x 30kw.
I’m not sure tbh but it’s been one nightmare.
I’ve had a various gas safe plumbers out, they all looked at the system and said it’s fine and it’s a gas supply to the property issue. I’m sure apart from cadent I’ve paid 3 local firms to come check it.
The last guy checked it and gave me a certificate to say it’s gas safe tested as well and said it’s a supply issue to the meter.
As you can see I’ve been trying to resolve this and was obviously fobbed off by everyone that it’s a supply issue to the house.