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Vitodens 100-W temp setting question
I have a 100-W (WB1B) and the temp setting dial doesn't make sense to me. It has a dial with positions 1 thru 6, and the manual says position 1 == 81°F and position 6 == 178°F. Presumably, it's linear, so that works out to 19.4° per increment. However, two facts don't jive with this.
First, the manual also says the factory default, a dot on the dial at about 4.75, is 140°, but that position would be 154°.
Second, position 3 should be 120°, but I get ~132° at position 3. To get 120°, I have to dial back to a hair less than position 2, which should be ~100°.
Am I missing something here?
Attached is screenshot of manual page, with a table of the interpolated dial temps drawn in by me.