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Question on Peerless WBV-03 boiler/burner selection
I am looking to replace a 30 yr. old New Yorker boiler and am looking at the Peerless WBV-03 with a Riello burner. Based on my current heating situation it looks like the WBV-03 with a .60 gph consumption rate can meet my heating needs. Because of this lower rate a Riello 40 F3 is specified.
All the other WBV-03 configs specify a Riello 40 F5 which has much greater capacity even though the F3 could easily handle other, higher firing rates as its rated up to 133MBH. But since the F5 does not go down as low as the F3, the F3 is specified to achieve the lowest firing rate.
So here is my question.
If I commit to the lower burn rate/capacity using the WBV-03/F3 boiler/burner combination to meet my current needs will there be any problem in the future of upfiring this burner/boiler combo by putting in a larger nozzle (like .85 or .95 gph) to increase boiler heating capacity if I need/desire it? Since both the boiler and burner are rated for these higher number is this ok to do or are there some things that I am missing and the F5 really is necessary to properly achieve those higher rates in this boiler? Is is this a case of the the F5 selection for the higher firing rates driven more by manufacturer standardizing on specific burner configs to make things simpler for them and installers?