Baxi Solo 2 60 RS Installation And Servicing Instructions page 21

The boiler is supplied ready for fully pumped and
sealed systems.
The boiler has 2 connection tails to accept capillary or
compression fittings:-
B
B
For fully pumped system, connect to tails marked F
and R.
For sealed system, connect to tails marked F and R.
Water Connections
22mm tail marked F for Flow.
22mm tail marked R for Return.
Pipe Routes
Pipework should be routed to the back plate.
Pipes may also be routed to drop down within
outer case. Spaces are available at both
sides. If pipes are routed to drop down
A
within the outercase vents are
required.
It is recommended that fittings 'A'
are of copper capillary type.
It is recommended that fittings 'B'
are compression type.
A
Fully Pumped System
Sealed System
21