1. Insertion of the outer sleeve

The "outer sleeve" of the Thermex collector is first inserted into the borehole. The sleeve is sealed tight at the bottom end and a weight is used to simplify installation. The sleeve is manufactured from a durable material ensuring that it is not damaged during installation or operation.

2. The outer sleeve is filled with water

Once the sleeve has been inserted it is filled with water making it push tight against the wall of the borehole.

3. A double, isolated center pipe is then inserted

A double center pipe is then inserted into the hole. The air-filled space between the two center pipes acts as isolation enabling optimal exchange of heat between the colder and warmer flows, without thermal shunt flow.

4. Insertion of the feed pipe

At ground level a lid is used where the pipes penetrate from the borehole and are taken to the heating pump.

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