Installation Guide

Planning the Installation
SECTION 3
4
3.1 Selection of Floor Covering material
TheoorcoveringmaterialsusedwiththisproductmustnotexceedathermalinsulationR-valueof1.
Examples of Common R-values for Floor Covering Materials*
Floor Covering Material Thickness (inches) R-value
Carpet 3/8 1.0
Tile(ceramic,mosaic) 1/4 0.15
Laminate 3/8 0.675
Plywood ½ 0.63
Naturalstone(granite,
limestone,marble,sandstone)
1 0.38 to 0.114
Wood 3/4 0.80maximum
*These values are provided for general reference purposes only. Consult the oor covering manufacturer for product-specic
information.
3.2 Thermal Insulation
TheinsulationlevelsoftheoorwillaffectboththeperformanceandoperatingcostsoftheTempZone™oorheating
system.Thermalinsulationreectstheheatupwardsintotheoortileinsteadofallowingheattopenetrateintothe
suboor,keepingtheoorwarmerforalongertime.
Whenthecableisinstalledonaconcreteslab,werecommendaddingalayerofinsulationtotheslabpriortoinstallingthe
TempZone™FloorHeatingCable.Addinginsulationontopoftheconcreteslabandbeneathanyoorheatingsystemwill
allowagreaterpercentageofheatgeneratedtotransfertotheooringsurface.WarmlyYoursrecommendsusing5mm
thickCeraZorb®syntheticcorkunderlayment.
3.3 Calculation of Length of Cable Required
Todeterminetheappropriatecablelengthfortheinstallation,measuretheareatobeheatedandcalculatetheareain
squarefeet.Donotincludetheareacoveredbyxedobjects,suchasappliances,bathtubs,cabinets,etc.Refertothe
“InstallationandSpacingRecommendations”chartinsection1.2todeterminetherecommendedwattdensitypersquare
footforthetypeofinstallation.Referto“ProductSelectionGuide--120V”or“ProductSelectionGuide--240V”insection9to
selectappropriatecablelength.