Riello BF5 or F5 burner?
I'm going to have my oil burner replaced on my Weil-McLain WGTO3 tankless.
I was planning on having the Riello F5 as the replacement, but wondered if there would be any benefit to having the BF5 (balanced flue) instead? I know an outside vent and piping would have to be put in to duct the intake, but would there be any benefit to doing this? My tech pretty is indifferent, which makes me think he doesn't really know and I don't have many options for oil tech's where I live.
As you know, we can't talk price its self.
But, did your tech, or his company do a ROI for you.
How much oil did you use last year. How many years will it take for you to break even, if oil goes up a dollar a year.
Would another lower cost burner get close to the efficiency of the Reilllo at half the cost.
What is your electric rate. Boilers with tankless coils are a big waste of oil.
Outside combustion air always improve fuel utilization. May not pay back very fast on houses with high natural infiltration rates though.
They didn't do any ROI, they are suggesting that I can use the new burner (I need one anyway) with the conventional chimney I have and do a horizontal intake from outside on the wall. The other option is just use the F5 and it will be using inside air.
I am figuring the outside air is the better option, since I wouldn't be heating it. The only additional cost in this is apparently the venting for the intake to the wall. But again, this isn't a balance flue deal, it is conventional chimney and sealed horizontal vent to the outside.
Using outdoor air for combustion will reduce house infitration and save a small amount on your heating bill.
What burner do you currently have.
I have the weil QB-180, which has had some issues and not been very reliable.
I wasn't sure if the horizontal intake would not be doable with the conventional chimney. But can't see why it wouldn't be.
I also asked the tech whether the tankless is wasting oil. He said since it is just me and my wife, probably not. We haven't had and issues with hot water availability. We used about 600 gallons of oil last year and it is a 1600sq. ft house that is well insulated. I did wonder though whether shutting off one coil would make sense and adding a superstor tank would be worth it. Probably need an ROI on that to see if it would be worth it.
WTGO3 should only have one domestic tankless coil.
The QB was a bad burner.
Depending on your electric rate, and price per gallion of oil. An electric water heater woill save more then a superstore.
Electric water heaters have no standby loss like your boiler does. They don't have the high recovery rate of an indirect either. But with just 2 people, you chouldn't need 130 gallions of hot water in an hour either.
At 11.2 cents per kilowatt, an oil boiler with oil at 4 dollars a gallion would have to be at 87% efficiency to run as cheap as the electric.
Things to consider that an oil company may not point out to you.
PS: The QB, despite its reliability issues was usually 82 to 83% efficient combustion wise.
So the Reillo its self will not save you much over a less expesive upfront cost Beckett, or Carlin burner.
Unless your installing a Buderus....then riello is good
But...if you going with a Weil Mclain Pin Boiler....I would go with the Carlin EZ-1
burner...they burn clean ...with the Mclains