Fenix ECOFILM SET - Manual (Page 6)

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3. Subfloor Quality
• The subfloor surface must be suitably flat, without any juts, bumps or depressions. It can be made from
concrete or other construction materials that can support sufficient loads.
• The subfloor humidity must not exceed 2% (approx. 60% relative humidity). If moisture can penetrate the
subfloor, you must, before you start your work, insulate the subfloor against moisture well.
4. How to Prepare the Heating Film
•
Cut the heating film with scissors, if necessary, to the required length in the marked cutting place - cut the
film in the centre of a cutting strip!!
• Insulate uncovered edges of copper tapes with insulating stickers included in the set (or with a suitable
insulating tape in case you lose the stickers).
• The integrity of the heating film cannot be disturbed in any way (hole etc.).
• Nails, clips and other fixtures may only go through the film on longitudinal sides, at least 11 mm from live
parts of the film (copper bus). Should it be necessary to cut off the longitudinal edges, the minimum dis-
tance of 11 mm must be also observed.
5. How to Lay and Connect the Heating Film
• Before laying the heating film, lay out a damping layer (Starlon).
• In the places where you expect to place connection points (plastic covers) and in the places where con-
ductors lead to the connection box, you need to make a groove for sinking them into the subfloor or the
damping layer (connection points—wider parts of covers face downwards).
• Never lay the strips of the heating film in such a way that heating surfaces overlap. You can fix the strips in
place using an adhesive tape. Never lay the heating film across expansion joints or under fixed room fur-
nishings. It is prohibited to step on the heating film without a suitable subfloor or in an unsuitable footwear.
• Connect conductors to a connection box (see fig. 1 and 2) or directly to a thermostat.
• Once you have laid all strips, check the resistance of individual strips with an ohmmeter (before laying a
floor covering) and verify the values according to the table on the introductory page—a deviation must be
within +5% to –10% (in case of cutting the film, the values must be recalculated). Enter the measured data
in the Warranty Certificate. Draw the position of individual strips, conductors and connection points in the
Warranty Certificate as well.
• Lay out the PE foil at least 0.2 mm thick upon the whole floor surface. The individual strips must overlap by
at least 5 cm. Pull the overlaps up along the circumferential walls, connect with the PE foil of insulation
and place in the floor level.