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Downsizing nozzle on wtgo-4 and riello f5
I have my service tech scheduled for a annual maintenance in two weeks and looking for some advice. I currently have a 2005 well-mcclain wtgo-4 without a tankless coil and a riello 40 f5 burner.
I have a 2800square foot house with a attached unheated garage. This is a split level/raised range style. 2 floors. 1st floor sits on a slab. Garage may get heated one day after it's insulated. The square footage is from wall to wall I did not measure each room individual.
I have three zones. Two for heating and one for a well-mcclain 29 gallon indirect water heater. One zone is 74 feet of baseboard on 2nd floor and the other is 52 feet of baseboard on first floor. This give me roughly 63,000 btu of baseboard. Currently the wtgo-4 is speced out to have a 1.20 nozzel. The btu rating seems to be a lot more then we need. Do you think it's possible to bring it down to the wgo-4 spec of 1.0 nozzel or even smaller.
Figured I would ask the pros on this matter. Thank you in advance for the help.