Viega Eco Plus 8130.2 Instructions For Use Manual page 17

Handling
Mount WC threaded rods (gauges for bore hole 180 or 230 mm).
Clip in drain elbow.
180
230
click
Install site protection of the flush actuation.
Attach protective caps for threaded rods onto WC ceramic.
Mount protective plug.
If necessary, mount a reducer.
Carry out water connection.
Viega Eco Plus WC element 17 from 23