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Frequently asked questions about the electric underfloor temperature control film

Please consult the data sheets together with the assembly and installation instructions. Subject to technical changes as part of further development.

Can the electric heating films be operated without a sensor and regulator?

The heating film should generally only be operated via a regulator with integrated floor temperature sensor. The electric underfloor temperature control system can be operated temporarily without a sensor for test purposes. However, in this case it must be ensured that the heating film is unrolled and completely connected.

Are cables allowed to cross over the heating film?

No. The heating film must never come into contact with fixtures and other cables.

Can several films be connected to the same regulator?

Yes. A heating surface area of up to 15 m² can be connected to one regulator (16 A). With heating areas larger than 15 m², the output of the heating film must be controlled via an additional contactor. In this case, the regulator switches on the underfloor temperature control system via the contactor. Alternatively, several regulators can be used. Here, it must be ensured that areas to be controlled are separated by an expansion joint.

How do you connect several heating films to the same regulator?

Several heating films are generally connected to the regulator in parallel. They should be wired via terminal strips which can be housed in the flush-mounted box behind the regulator or below the regulator.

Please note that only a maximum of 15 m² of heating film can be connected to the same regulator.

What must be taken into account when installing the heating films?

  • The heating film must only be installed at a surface temperature of at least + 5°C and not exceeding + 50°C.
  • Glands (connecting the PTC resistor and heating film) must not be subjected to tensile stress (maximum permissible 120 N).
  • The connection (between the heating film and PTC resistor) must not be pulled along into the empty conduit.
  • Never insulate heating films or feed them through insulation.
  • Heating films must be operated together with a 30 mA residual current device.

Can the heating film be repaired?

Heating films cannot be repaired. However, you can continue to use the heating film in the following cases:

  • If the film is damaged in the copper area, green polyester must be stuck on top of it.
  • If the black area is damaged, green polyester must again be stuck on top of the film. This ensures that the heating film no longer gets warm in this area.

Note: The repair should only be carried out by a qualified electrician otherwise the warranty will be rendered null and void.

Where can the regulator be fitted?

A 230 V~ socket is required. The regulator should ideally be fitted in the entrance area of the room approximately 1.5 m above the floor. As a general rule, it should not be fitted in the splash zone of showers and baths.

Can the temperature control film also be regulated using a room thermostat?

It only makes sense to use a room thermostat for regulation purposes when the underfloor heating system acts as the main heating system. In this case, the system should be regulated using a maximum limiter and room thermostat.

Can a floor temperature regulator from other manufacturers be used?

Yes, if it is suitable for regulating the underfloor heating system. The regulator must be equipped with a floor temperature sensor/limiter to regulate the heating film. The laminate or parquet manufacturer’s specifications must be observed here.

How much energy does the underfloor heating system require?

The energy consumption is 80 watts/m².

Note: Energy costs can be reduced by effective thermal insulation in relation to the outside wall and below the underfloor temperature control system.

Can the PTC resistor be shortened?

The PTC resistors can be shortened by up to 10 cm in front of the gland.

Can heating films be used outdoors?

Installation in an allotment hut is not a problem. However, the heating films are not suitable for installation on pavements or stairs outdoors. We offer an open-space heating system for outdoor use.

What needs to be taken into account when warming up and starting up the system?

If laminate or parquet flooring is fitted, expansion joints must be present in order to allow the flooring to breathe. The processing instructions for the laminate/parquet flooring and from the building material manufacturers must be observed as a general rule.