Nussbaum ATT BM 35 Touch - Pre-Centering Flange with Tapered Screws; Securing Flange with Helical Screws; Post-Retrofit Zero Run

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Pre centre the flange on the balancing unit using the
4 tapered screws
Replace the tapered screws with the „original“ helical
screws and tighten them crosswise
Perform a zero run (refer to instruction manual for more information)