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you Know if the High temp needs High temperatures?
You may want to do a heatloss maybe the "baseboards?" are oversized which will be of a benefit
I use the Vitodens 200 and am waiting for the 100 to be approved for High attitude and will interface the 100 with the Iworx(Innovex) which was just acquired by Taco..
Triangle's Prestige is also a very good Boiler and will allow higher temps which will work better on SOME retrotits..
But also keep in mind that the support from your rep shall be a factor..