Baxi Solarflo Installation Manual page 16

Fig. 13
16 Solarflo - Solar Thermal Domestic Hot Water System
9.0 Installation of hydraulic station
9.4.2 Venting the pipework
The Baxi Solarflo hydraulic station the component
includes an air collector/separator and bleed point so
an automatic air vent is not necessary. Any section of
solar pipework that falls and rises again should be fitted
with an additional air vent valve to relieve any trapped
air which may cause air locking in the system.The
automatic air vent and isolating valve used must be
compatible with solar primary systems, i.e. be resistant
to glycol and temperatures up to 180ºC.
9.4.3 Insulating the pipework
External pipework should be insulated with high
temperature resistant materials and be protected against
UV degradation. Internal pipework, especially through
unheated spaces such as a loft space, should also be
insulated with high temperature resistant materials.
Mark the outside of any insulation to identify the flow
and return pipes.
The Baxi Solarflo panels are supplied with 2x2m pre
insulated flexible stainless steel tubes. Additional lengths
(30m) of stainless steel flexible tubes and high
temperature insulation can be supplied.