Solex Roofing Installation Manual 30
Solex Energy Ltd +44(0)1305 837223 www.solexenergy.co.uk
replace the water, allowing the water to drop back into the tank.
10.
Antifreeze –
the roof absorber, manifolds and silicone supply pipes are resistant to
freeze damage, so generally just water is used in the system. However, if the solar
flow and return pipes are of a type that may be damaged by freezing (e.g. copper), and
they are used outside the thermal envelope of the building (e.g. in a cold loftspace),
then antifreeze should be used. In such cases we recommend the propylene glycol
type of antifreeze, which should be used at a concentration of around 30% glycol to
70% water (depending on local conditions).
