Viessmann Vitosol-F Installation Instructions Manual page 22

Installing the connection set and collector...
Never fit annealed copper pipes onto the
locking ring fittings.
zR
zR
zW
H Flow connection
22
zW
zQ
zR
K Return connection
(cont.)
uW
uE
zP
zR
H
uQ
uR
zT K
zE
uP