Installation Instructions

Heating Cable System Terminology
The following terms may appear frequently throughout these instructions in italicized text. Each is graphically illustrated in the key illus-
tration above.
Alternating Heating Cable Spacing. The Heating Cablecongurationusedforoorsaboveunheatedareasandconcreteslabs.
Cable is laced through the strapping at repeating spacing intervals of 1
1
/
2
"-3"-1
1
/
2
"-3", etc. using the tabs of the Cable Strapping (see
also Standard Heating Cable Spacing).
Border Dimension. Space between the outside perimeter of the Heating Cableandthesurroundingroomwalls;maybesetto1
1
/
2
" to 6" as
required, to slightly alter the Heated AreaandenableapropertwiththeselectedDFTCable.
Cold Lead Splice. Factory connection between the Cold Lead and Heating Cable; must be recessed
1
/
4
"intothesub-oor,duetoits
slightly larger diameter.
Cold Lead. Non-heated section of cable that transports current to the Heating Cablesection;hasablackouterjacket,covering
acopperbraidandtwoinnercolor-codedconductors(black/whitefor120Vcablesorred/blackfor240Vcables),andisslightly
larger in diameter than the Heating Cable section.
Dimension 1
1
/
2
". Minimum distance permitted between sections of Heating Cable or between Heating Cable and walls, vanity
kickplatesandxtures.
Dimension 6". Minimum distance the sensor wire should extend between two adjacent runs of heating cable, measured from
the arc of the Return Loop.
Cable Strapping. Coiled strapping used to harness the Heating Cabletotheoor;maybecuttolengthasneeded.
Cable Strapping Spacing. Distance between parallel rows of the Cable Strapping. To prevent contact between adjacent runs of Heat‑
ing Cable, a maximum strapping separation must be maintained. See Section 2.3 for strapping spacing.
Electrical Connection Box (ECB). Customer-supplied electrical enclosure that houses the heating controller for the heating cable
system. Cold Lead is pulled through the wall cavity and into the ECBusingtheshcords.
End‑of‑Run. Location where the Tail Spliceissecuredtothesub-oor.WithWarmTilesDFTCablethereisnoneedtoroutethe
End‑of‑Run back to the Electrical Connection Box.
“Half of Cable” Marker. Label attached to the Heating Cable at its mid-point, which should appear during installation at
the‘Half-of-HeatedArea’linedrawnontheoor.Servesasausefulmid-installationcheckastowhetherornottherewillbea
cable surplus or shortage at the End‑of‑Run.
Heated Area. Area physically covered by the Heating Cable; typically much smaller than the total room area since it does not include
vanities,xturesandLow Trafc Areas.
Heating Cable.Sectionofcablethatwarmsthefloor;hasclearoutercoveringwithvisibleunderlyingcopperbraid.
Low Traffic Areas. Sections of the floor that are seldom walked upon and do not require Heating Cable coverage unless it is
necessary to use up surplus cable.
Return Loop. Location where the Heating Cableturns180ºthroughtheCable Strapping, forming a loop that extends 3/4" (1" maxi-
mum) beyond the strapping cable slots.
Ribbon Strapping.Plasticstrips,1"wideand12"long;maybecuttolengthandstapled,tofastentotheCold Lead Splice and Tail
Splicetotheoor.
Sensor Wire.Ifaoortemperature-sensingheatingcontrollerwillbeused,itisnecessarytoinstallasensorwireatthesametimeas
thecablesystem.Thesensorwirerelayschangesinoortemperaturetotheheatingcontroller,whichmaintainstheoortempera-
ture at the desired level.
Standard Heating Cable Spacing. The Heating Cable configuration normally used on wood sub-floors located above heated
areas. Cable is laced through the Cable Strapping at a constant spacing interval of 3" between adjacent cable runs (see also
Alternating Heating Cable Spacing).
Start‑of‑Run. Location of the Cold Lead Splice;wheretheheatedsectionofcablebegins.
Tail Splice. Factory connection between the Heating Cable conductors located at the End‑of‑Run (uncoiled from the spool last).
Power Supply Wiring.The120Vor240Vcustomer-suppliedpowercable;terminatedinthecircuitbreakerpanelandpulledintothe
ECB for connection to the heating controller.
z Phase 1 — Power is brought to the electrical control box
z Phase 2 — The cable is installed using accessories and instructions provided
z Phase 3 — The flooring is finished in the usual manner
z Phase 4 — Controller is installed using its included accessories and instructions
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