Telescopic test joint box
The telescopic test joint box is specifically designed for integration in thermal insulation composite systems (full thermal insulation).
It allows access to the disconnecting clamp to electrically isolate the air-termination/ down conductors from the earth-termination system in case of electrical measurements.
If existing or new buildings are insulated by means of thermal insulation composite systems made of e.g. mineral fibre or polystyrene, the relevant technical processing guidelines by the manufacturers of these insulating materials must be observed. In these guidelines, the connection of windows, doors and all components extending through the building (e.g. ventilation pipes, switch boxes) are described in detail. These requirements are also important for lightning protection components. These connections are made by means of compressed and re-expandable sealing tapes (also referred to as water stop). The test joint box for thermal insulation composite systems is provided with an adhesive surface which allows easy and proper integration in thermal insulation composite systems. It is important to install the sealing tapes to ensure that the thermal insulation composite system is protected from wind-driven rain, thus preventing the ingress of moisture into the insulation.
The installer of the thermal insulation composite system is responsible for ensuring that the connections are protected from wind-driven rain.
When using insulating materials with a thickness between 140 and 320 mm, an additional spacer is required. In order to avoid heat bridges, a styrofoam core is integrated in the spacer.
The spacer can be quickly shortened by 50 to 200 mm at intervals of 10 mm by means of a saw.
Protected from wind-driven rain
The entire unit must be protected from wind-driven rain, that is also the cover of the test joint box. This stainless steel cover is robust, visually appealing and edged to ensure that the edge of the cover exerts sufficient surface pressure to the plaster. An UV and weather-resistant sealing made of foamed plastic is integrated in the cover to ensure protection from wind-driven rain. The cover is tightened by means of four screws including sealing washers.
The required fixing elements (screws and dowel) and a styrofoam cover (protection from contamination during cleaning work) are included in delivery.
The test joint box provides different perforations for down conductor and earth entry.
The test joint box for thermal insulation composite systems is thus an innovative and practice-oriented solution for integrating a test joint in thermal insulation composite systems.