2N helios ip force Installation Manual page 44

Flush Mounting – Thermally Insulated Wall
What You Need:
Longer screws (depending on the thermal insulation thickness)
Hole: (112 × 220 × 70) mm
Cut out the thermal insulation layer using the template (the same as for classic brick
wall).
Caution
The hole depth depends on the insulation layer thickness. If the
insulation layer is rather thick, you may need longer screws! If there are
hollow bricks under the insulation, make sure that your screws pass
through the whole dowel (50 mm) and fix the dowel reliably.
Make sure that the dowel holes have the required diameter. If the
diameter is too large, the dowels may get loose. Use some suitable
building adhesive to keep the dowels in place.
Make sure that the hole depth is sufficient too! The dowel length is 50
mm and the screw length is 90 mm.
Suppose that all the required cables have been carried into the drilled hole. Now
follow the instructions applicable for classic brick flush mounting. However, remember
that thermally insulated walls show less strength than classic brick walls.
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