Installation

In order to obtain a radiant system with the maximum perfor-

mance, after taking the preliminary precautions listed above, it

is necessary to follow this procedure:

•

Install the expansion edge strip;

•

Install the panel, starting from the side walls and connecting

one panel to the other using the side fastening system

provided (bonding the upper sheets, interlocking of the

perimeter grooves, interlocking the male/female perimeter

bosses;

•

Install the pipe on the panel realising the circuits as per the

installation diagram;

•

Ensure that the panel is in contact with the sub-floor and

secure it in the case of lifting;

•

Perform the leak test;

•

Evaluate and position the expansion joint strips according

to the UNI 1264 standard and/or according to the screed

manufacturer's instructions;

•

Proceed to pour the screed to a suitable thickness above

the pipe. For sand and cement screeds, respect the proper

water/cement ratio of 0.55;

•

Carry out screed heating tests as per UNI 1264 and/or as

indicated by the screed supplier. In particular:

•

At least 21 days after the laying of sand and cement

screeds;

•

At least 7 days after the laying of calcium sulphate-

based screeds;

•

Maintain at 20 to 25 °C for at least 3 days, and then

raise to the maximum design temperature, to be

maintained for at least 4 days;

•

Install the floor covering.

26

Underfloor Radiant Systems - Product Guide

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