Is it necessary to insulate hydraulic lines with SPRING?

The insulation of the pipes depends on the type of application (therefore the temperatures of the heat transfer fluid) of the different systems and the location of the pipes.

Mainly for individual and collective water heating applications and SCS, the hydraulic transfer lines must be insulated. The insulation must be resistant to U.V. rays.

In the case of pre-insulated hydraulic lines, the insulation can be cut to facilitate the passage of partitions.

Mainly for pool heating.

Hydraulic transfer lines don't need to be insulated. 

Mainly for solar thermal heat pump application.

It is really important to insulate the internal pipes in order to avoid any risk of condensation. Indeed the temperature in the circuit are cold and might even be below 0°C during normal use and therefore create a high risk of condensation. We recommend to use waterproof insulation with 5 cm of thickness  in order to avoid the risk of condensation and therefore small flooding inside your house. 

It is not necessary and even discouraged to insulate the outside pipes as it the exchange between ambient air and the fluid is beneficial for the system. 

> To go further : What type of pipes should be used between the panels and the technical room?