What exactly does the high/ medium /low heat request do?
Does anyone understand this support page:
How do I know how often tado° turns my heating system on and off?
It says it shows:
"heat request symbol as a number of wavy lines with 3 being a high heat request, 2 medium, 1 low..."
Then further down:
"For relay systems, the heating system turns on (100%) or off (0%) completely for specific time cycles based on the heat request. "
Does that mean no high, medium, and low for relay users?
Then further down it says:
"...for digital heating systems (e.g. OpenTherm/eBUS), based on the heat request, the heating system modulates the heat it supplies to reach and maintain a specific temperature..."
But again no reference to high, medium & low.
What exactly does the high/ medium /low heat request do? ...and what kind of boilers technology does it require? (mine is a Vaillant ecoTec Green iQ 627 (not OpenTherm, afaik)