Viessmann VITOSOL 300-T Installation Instructions Manual page 24

Making the hydraulic connections
A Groove for the retaining clip
VL Flow (short connecting pipe)
1. Remove the retaining clips.
2. Push the connecting pipes in as far
as possible.
3. Push the U-pipe in as far as possi-
ble.
4. Secure the connecting pipes and U-
pipe with the retaining clips; click clips
into the groove in the connecting
pipes through the holes in the collec-
tor connectors.
5. Thread the locking ring fittings onto
the connecting pipe.
24
(cont.)
VL
RL
RL Return (long connecting pipe)
6. Insert the support sleeves into the
connecting pipes of the solar circuit.
Make the connection between the
collector array and pipework of the
solar heating circuit.
7. Check the system pressure and test
for leaks.
"Vitosol" service instructions.
8. Fit the thermal insulation cap.