Installation Manual

4.3 PRE-INSTALLATION PREPARATIONS
1. Review the custom installation plan for the area requiring the Heating System and
verify dimensions listed against your actual eld dimensions to ensure they match.
2. Conrm the location of the power supply box/Thermostat and sensor against the
plan.
3. Select Heating Cable(s) and ensure that the procured Cable is correct according to
the requirements in the following section.
4. Check the Slab Heating Cable in the box visually and make sure that it is not
damaged. Check voltage, wattage, resistance values from the factory test record
and verify that they match the required specications.
5. Check resistance of the conductor and its insulation resistance with a multimeter/
megohmmeter as soon as it is removed from its packing. Resistance value of
the Heating Cable shall match to the value shown in Appendix A or Appendix B.
A tolerance of -5% to +10% is allowed. Insulation resistance should be innite.
Record it on the warranty card located on page 13 of this manual.
6. The Heating Cable is now ready for installation.
4.4 INSTALLATION FOR INDOOR CONCRETE SLAB APPLICATION
1. 2” thick polystyrene insulation (or better) should be installed below slab and around
perimeter edges.
2. Reinforcement mesh on the oor or slab should be strong enough to walk on and
not sag or bend.
3. Reinforcement mesh should be properly positioned and supported so that it does
not get disturbed during the concrete pour. Ensure the Heating Cable is on the
reinforcement mesh a minimum of 2” (51mm) below the nished concrete/slab
surface.
4. Surface preparation of the oor is very important. The oor must be completely free
of all debris including all nails, sharp metallic objects, wood and construction debris.
Make absolutely sure that there are no objects on the oor that might damage the
Heating Cable.
5. Start installing Heating Cable from the location of power connection box.
6. Roll out the Heating Cable. Secure it to the reinforcement mesh or grid using plastic
zip ties (supplied by installer).
7. Heating Cable should be laid 3” (76mm) away from the wall perimeter.
8. Heating Cable should be laid so that the Cables are equally spaced. The distance
between two Heating Cable passes should be according to the spacing calculation
determined by WarmlyYours (3” to 5” range).
9. Route the power leads through a conduit from the oor to the connection box. If
multiple cables are being used, route all power leads through a conduit from the
oor to the connection box in the wall. Ensure hot section and factory splice do
NOT get into the conduit
10. Check the resistance and insulation resistance value after laying out Cables.
Check to see if these values are consistent with the pre-install values. Record
values in the warranty card on page 13.
11. At this point, the concrete can be poured.
12. Pour the concrete and spread evenly on the reinforcement mesh / grid. The
concrete oor or slab thickness shall be about 2” (51 mm) on top of the Heating
Cable. Typical 4” to 6” slabs will have cable located in middle (2” to 3” from
nished surface).
13. Ensure the entire Heating Cable, factory splices and thermostat sensor (in metal
conduit) are embedded in the cement mortar. The choice and application of building
materials should be in accordance with the building material manufacturer’s
instructions. (see diagram B)
14. Ensure the correct curing time for drying of construction materials is followed
before powering ON the Heating Cables (7 day minimum).
15. Check the continuity, resistance and insulation resistance values after the concrete
or mortar is poured. They should be consistent with the values recorded previously.
Record values on the warranty card on page 13 of this manual.
16. Never use 500 VAC megger while personal are standing in, or touching the wet
cement. Wait until personal are out of the wet concrete.
4
2’ (61cm)
or
3’ (91cm)
Length 5’ (152cm) min 50’ (1524cm) max
20’ (610cm) Cold Lead
Outer Sheath PVC/Pololefin
Polyester Sheath
Metal Sheath (Copper/Galvanised Steel/Cladded Steel)
Primary Insulation (Fluoropolymer)
Heating Conductor (Solid/Multistrand)
10"
(251mm)
3"
(8cm)
20’ (610cm)
Cold Lead
HEATING
CABLE
FLOOR
SENSOR WIRE
SENSOR WIRE SENSOR
CONCRETE SLAB
CAPPED 3/4”
METAL CONDUIT
2-3”
SLAB
4-6”
CAPPED
CONDUIT
1/4” (6mm)
Twin-conductor
Heating Cable
HEATING SYSTEM
THERMOSTAT
SNOW MELT MAT
120 VAC SUPPLY
110V / 230V AC SUPPLY
120 VAC
or
240 VAC
RELAY
PANEL
SCV-120
CONTROL
SENSOR
HEATING
CABLE
FLOOR
SNOW MELT MAT
THERMOSTAT
P N E
T-Stat
DIAGRAM B