Sonnenkraft RLGHE Manuel page 17

Installation on the tank
Installation sequence
First fully screw-in the threaded bolts [12] for station
fastening on the tank. Then turn back and position so
that the slot-in groove is vertical and the opening is
pointing upwards.
Hook the station with ball valve's retaining bolts from
above into the groove of the threaded bolt.
Make hydraulic connection between station and tank
using the elbow and seals and align the station if neces-
sary.
Caution!
Counterhold when tightening the union nuts.
GB 17