• Always use smooth scrapers to spread the concrete over the mesh. Ensure
the scraper does not get caught in the cables during this operation.
• Shake the mesh with care during concrete compaction to prevent any
damage to the cables.
Cable Verifi cation
Once the concrete has been poured, verify the cable’s integrity one more
time, as described in the “Cable Verification” section at the beginning of this
guide. Record the results on the warranty card.
Curing Period
Do not turn your system on, nor proceed with floor covering installation,
immediately after the concrete is poured. The system can be operated only
after the concrete has completely cured. Refer to the instructions of your
construction professional or your local building code to verify the curing time:
this curing period is essential so that the concrete reaches its full hardness.
Connection to the Thermostat
DANGER: SEVERE RISK OF ELECTROCUTION.
Turn off the power of the designated electrical circuit prior to
connecting the system controls.
Compatible Thermostats
Use FLEXTHERM thermostats to operate the system. These thermostats
are equipped with a class A ground fault circuit interrupter (GFCI) that will
protect the system in case of fault. To preserve the system’s warranty, the use
of a control equipped with a class A GFCI (5 mA) is required.
Single-circuit Installations
Connect the system’s green wire (ground) to the terminal in the connection
box. Proceed as per the instructions in the electronic thermostat installation
manual. Identify the circuit on the electrical panel.
Multiple-circuit Installations
Should your installation require more than one circuit, you will need one
thermostat, one master/expansion conversion kit, and the appropriate
number of expansion units, as indicated in the “Preliminary Electrical
Installation” section. For their connection, refer to the instruction guide
provided with those items. Identify the circuits on the electrical panel.
Keep Installation and User Guides
Please keep the thermostat instructions in a safe place for future reference.
Floor Covering Installation
Precautions to take during Flooring Installation
Install the floor covering in accordance with the manufacturer recommenda-
tions. Never screw or nail in the floor.
All floor covering must be in direct contact with the concrete slab that
encases the heating cable. Do not elevate the floor above the concrete mass
below: air gaps will act as insulating agents and would prevent the heat from
reaching the flooring.
Note Regarding the Floor Stability
The stability of the floor covering may vary from one to the other. Adhesive
manufacturers and the Tile Council of North America ( TCNA) strongly
recommend the use of expansion joints on the perimeter of the room and
obstacles as well as across the room (reference TCNA article EJ-171).
Should you require more information regarding tile setting contact the TCNA
(www.tileusa.com).
Additional Considerations
Use of Rugs
Do not lay a rug on a floor equipped with a floor heating system. The heat
that would get trapped could alter your rug or floor covering. The use of a
bath mat is acceptable as long as it is taken off the floor once the bath period
is over.
For the same reason, do not lay a piece of furniture under which air cannot
freely circulate on a floor under which there is a heating system.
Maintenance
FLEXTHERM’s
Floor Warming and Heating System
is maintenance free. Should
it stop heating, immediately contact FLEXTHERM Customer Service at 1-800-
353-9843.
Limited Warranty
The
Green Cable
Concrete
bears a 10 year limited warranty. Please
refer to the FLEXTHERM Limited Warranty Statement inserted in
this document for complete details.
Return the Limited Warranty Registration Card filled with the results of the
three (3) cable verifications (resistance and insulation) in order to preserve the
Limited Warranty of your system.
7
Green Cable
Concrete
Installation Guide
