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i fitted the above boiler last week, all was fine during commission, other than the supply being undersized a bit. Was getting 14mb at the gas valve, 23kW heat input on hot water and I think 2.8m3/h which is just shy of the required 3.2m3/h. Only this appliance on gas.
Got called back a couple days later due to a loud noise which wasn't there when I commissioned the boiler.
Basically on max rate only, there's a noise like wind being blown into the combustion chamber. Spoke to Baxi they said it's because the gas pipe is undersized and the burner is getting too much air.
In theory it makes sense due to the fact the fan governs the gas rate. But I thought it would just ramp down if there wasn't enough gas available, like every other boiler I've seen with undersized pipework.
I've told them the pipe needs upgrading but as per the fga the boiler is running fine.
Got called back a couple days later due to a loud noise which wasn't there when I commissioned the boiler.
Basically on max rate only, there's a noise like wind being blown into the combustion chamber. Spoke to Baxi they said it's because the gas pipe is undersized and the burner is getting too much air.
In theory it makes sense due to the fact the fan governs the gas rate. But I thought it would just ramp down if there wasn't enough gas available, like every other boiler I've seen with undersized pipework.
I've told them the pipe needs upgrading but as per the fga the boiler is running fine.
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