TempZone™ Floor Heating Cable Installation

TempZone™ Floor Heating Cable Installation
TempZone™ Floor Heating Cable
Installation Instructions
Free Design Service • 24/7 Installation Support • No Nonsense™ Warranty • (800) 875-5285 • www.WarmlyYours.com
Table of Contents
1 Product Information and Specifications................................................................................................. 1
2 Before You Begin.................................................................................................................................... 2
3 Planning the Installation........................................................................................................................ 4
4 Electrical Considerations........................................................................................................................ 6
5 Installation and Operation..................................................................................................................... 9
6 Testing.................................................................................................................................................... 19
7 Operating Tips........................................................................................................................................ 21
8 Troubleshooting..................................................................................................................................... 22
9Addenda................................................................................................................................................. 26
10Warranty Information............................................................................................................................. 30
SECTION 1
Product Information and Specifications
1.1 Product Specifications and Details
Radiant floor heating systems are uniquely designed for use as primary or supplemental heat sources in residential or
light commercial applications for use under tile, stone, hardwood, engineered hardwood, carpet (verify installation is in
compliance with local electrical code), and laminate flooring.
The TempZone™ Floor Heating Cable is composed of a twin-conductor cable and a cold lead of 15 feet for connection to a
power source. The heating cable delivers 3.7 watts/linear foot. Wattage per square foot depends on the installation. Refer to
the “Product Selection Guide--120V” or “Product Selection Guide--240V” in section 9 for additional information.
The TempZone™ heating cable consists of a copper alloy resistance-heating element insulated with a fluoropolymer having
high dielectric strength and the ability to withstand high temperatures to ensure safety. The core is surrounded by a copper
metal screening, which provides additional mechanical strength and a ground path. A foil shield surrounds the copper
ground to virtually eliminate EMF. An outer fluoropolymer jacket strengthens the cable and protects against corrosion.
1.2 Selection of TempZone™ Floor Heating Cable
The TempZone™ Floor Heating Cable is available in either 120V or 240V and a range of lengths to meet the requirements
of each installation. To determine the appropriate product for your installation, refer to the “Installation and Spacing
Recommendations” chart below, and then consult either the “Product Selection Guide--120V” or “Product Selection Guide-240V” in section 9.
WarmlyYours TempZone™ Floor Heating Cable can be installed at 3- or 4-inch intervals to meet the needs of any
installation. To determine which spacing works best for your installation, consider the following:
Installation and Spacing Recommendations
3-inch Spacing
4-inch Spacing
Wattage
(depends on cable length)
15 watts/sq. ft.
11 watts/sq. ft.
Heating Type
Primary or supplemental
Supplemental
Subfloor Type
Concrete and wood
Wood (and other non-concrete surfaces)
Flooring Type
Tile, stone, laminate, carpet *
Hardwood, engineered wood, laminate, carpet*
Wet Areas
Bathrooms, showers
N/A
Climate
Colder and warmer climates
Warmer climates
Recommended uses
Older homes where insulation may not
be optimal
New homes with optimal insulation values
Coverage
120V: up to 120 sq. ft.
240V: up to 240 sq. ft.
120V: up to 160 sq. ft.
240V: up to 325 sq. ft.
*Note: Cable must be embedded in a 3/8 inch layer of self-leveling underlayment.
1
Before You Begin
SECTION 2
2.1 G
eneral Precautions Before Installation of the TempZone™
Floor Heating Cable
2.1.1 T empZone™ Floor Heating Cable must NOT touch, cross over, or overlap itself at any point.
This could cause the cable to overheat. Use TempZone™ Cable Fixing Strips to avoid bunching or crossover of the cable.
2.1.2 D
o NOT cut the TempZone™ Floor Heating Cable. Altering the cable length may result in overheating and damage to the
cable. Ensure that you order the correct cable length for your installation.
2.1.3 T ake precautions to avoid damage to the TempZone™ cable during installation. Do not drop sharp objects or carelessly
step on the cable. Do not bang the trowel on the heating cable while applying mortar.
2.1.4 I f you are replacing a floor with an existing floor heating system, completely remove old mats and/or cable before
installing new the TempZone™ Floor Heating Cable.
2.1.5 T empZone™ floor heating cables should be separated from other heat sources. Per the National Electric Code, section
424.39, heating elements of cables must be separated at least 200 mm (8 in) from the edge of outlet boxes and junction
boxes that are to be used for mounting surface luminaires. A clearance of not less than 50 mm (2 in) shall be provided
from recessed luminaires and their trims, ventilation openings and other such openings in room surfaces. No heating
cable shall be covered by any surface-mounted equipment.
2.1.6 Do not install TempZone™ Floor Heating Cable when the ambient temperature is below 5ºF (-15ºC).
2.1.7 I f using a thermal insulation underlayment between the self-leveling underlayment-encased cable and the final floor
covering (verify installation is in compliance with local electrical code), use a product with a typical R-value of 0.027
or less.
2.1.8 WarmlyYours recommends using CeraZorb® underlayment when installing cable over a concrete floor or slab to allow a
greater percentage of heat generated to transfer to the flooring surface.
2.1.9 The bending radius of the TempZone™ Floor Heating Cable during installation should not be less than 25 mm (1 in).
2.1.10 The cold lead is 15 feet long. WarmlyYours recommends allowing 12 inches of cold lead wire to extend from the
thermostat box to facilitate easier thermostat connection. Any excess cold lead may be trimmed. Please follow all national
and local electric codes.
2.1.11 Center the floor thermostat sensor between two adjacent runs of TempZone™ Floor Heating Cable. Do not locate floor
thermostat sensor closer than 1 inch to the cable or allow it to overlap any other cable.
2.1.12 Carpet and laminate manufacturers may recommend a maximum limit for the temperature setting on the thermostat of
86ºF (30ºC).
2.1.13 Do not install the TempZone™ Floor Heating Cable under permanent fixtures (e.g. cabinets, bathtubs).
2.1.14 Allow for a sufficient drying or curing period of the subfloor and finished floor covering before and after installing the
TempZone™ Floor Heating Cable. Do NOT operate floor heat until the thinset or self-leveling underlayment (SLU) has
completely cured.
2.1.15 Please note the thickness of the factory splice and cold lead and plan accordingly.
2.1.16 When using self-leveling underlayment (SLU), WarmlyYours recommends priming the floor before attaching the Cable
Fixing Strips and securing the cable. Doing so will ensure that the primer covers the subfloor completely. Whenever using
SLU, ALWAYS follow the installation recommendations set forth by the SLU’s manufacturer. It is very important to adhere
the heating cable securely to the subfloor, otherwise the heating cable may float to the top of the SLU.
2
Before You Begin
SECTION 2
2.2 Important Electrical Precautions Before Installation
IMPORTANT: Where required, all electrical connections should be performed by a licensed, certified electrician in
accordance with local and national electrical code requirements.
2.2.1 TempZone™ Floor Heating Cable has an earth-grounding braid (metal sheath). The earth-grounding braid should be properly
grounded. The core wires should be connected to the main power supply.
2.2.2 Verify that cable voltage matches the voltage of circuit.
2.2.3 Check the ohms resistance of the TempZone™ Floor Heating Cable before, during, and after installation. Resistance value
should match the value given on the label attached to the cable. A tolerance of -5/+10% at 20ºC (68ºF) is allowed.
2.2.4 Local electrical codes may require the low-voltage sensor wire to be installed in conduit. If this is required, do not install the
low-voltage sensor lead in the conduit containing the cold leads. Provide a separate conduit for the low-voltage sensor wire.
2.2.5 WarmlyYours strongly recommends connecting the Circuit Check™ device to warn of accidental damage to the TempZone™
Floor Heating Cable or lead wires during installation.
2.2.6 TempZone™ Floor Heating Cable should be connected to a Listed Class–A Ground Fault Circuit Interrupter (GFCI). If using one
of our programmable or nonprogrammable Listed thermostats that include a built-in GFCI, then a separate Class–A GFCI is not
required.
2.2.7 If the GFCI is tripped during normal operation and cannot be reset, there may be a fault in the cable. Do NOT attempt to
re-energize the TempZone™ Floor Heating Cable. Do NOT bypass the GFCI under any circumstances. Contact a qualified
electrician or WarmlyYours for assistance.
2.2.8 Indicate which branch circuits or circuit breakers supply the power to the floor heating cable in a convenient location
(e.g. taped to the circuit breaker box) for reference by the electrical inspector or homeowner. Retain the UL labels for each
TempZone™ Floor Heating Cable. Leave one UL label attached to the floor heating cable.
2.2.9 Use only Listed conduit, fittings, and other components.
2.2.10 TempZone™ Floor Heating Cable shall not extend beyond the room or area in which it originates.
2.2.11 The TempZone™ Floor Heating Cable should only be installed by qualified personnel who are familiar with the construction
and operation of the TempZone™ Floor Heating Cable and the risks involved.
2.2.12 The installation of the TempZone™ Floor Heating Cable shall be in accordance with all manufacturer’s instructions and local
and national codes.
2.2.13 In Canada, the installation shall be made according to the provisions of section 62 of the Canadian Electrical Code, Part 1.
2.2.14 When used in wet locations, the installation shall be in accordance with the National Electrical Code (NEC), NFPA-70 and
CAN/CSA-C22.1, Canadian Electrical Code (CEC), Part I. Final approval of the installation is to be determined by the Authority
Having Jurisdiction (AHJ). The UL Listing for this product does not cover use in wet locations in the United States. Installations
shall be in accordance with the National Electric Code, NFPA 70 and any other applicable jurisdictional codes and final
acceptance is to be made by the Authority Having Jurisdiction (AHJ).
3
WARNING : Risk of electric shock and fire. Damage to supply conductor insulation may occur if conductors are
routed less than 2 in. (51 mm) from this heating product. Refer to installation instructions for recommended
means of routing supply conductors.
SECTION 3
Planning the Installation
3.1 Selection of Floor Covering material
The floor 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 floor covering manufacturer for product-specific
information.
3.2 Thermal Insulation
The insulation levels of the floor will affect both the performance and operating costs of the TempZone™ floor heating
system. Thermal insulation reflects the heat upwards into the floor tile instead of allowing heat to penetrate into the
subfloor, keeping the floor 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 floor heating system will
allow a greater percentage of heat generated to transfer to the flooring 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 fixed 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.
4
SECTION 3
Planning the Installation
3.4 Calculation of On-Center Spacing (OC)
In order to fit the TempZone™ Floor Heating Cable properly in the designated space, it is necessary to determine the
spacing between the cables. This is called on-center spacing or OC. Refer to either the “Product Selection Guide--120V” or
“Product Selection Guide--240V” in section 9 to determine appropriate spacing for the installation.
Combine cable lengths if more than one is needed for the installation. Once the OC spacing has been calculated and the
correct length of cable for the area to be heated is obtained, installation of the floor heating cable can begin. The formula
assumes that 3-inch spacing will be used between the heating cable and walls or fixed objects, and full OC spacing
between cable runs. To make cable placement easier, make a measuring template out of cardboard in the width of the OC
spacing less the thickness of the cable. Place the template along to the cable run just completed to determine where the
next run of cable should be positioned.
IMPORTANT: To avoid overheating, OC spacing should not be less than 3 inches and area loading should not
exceed 15 watts/square foot.
IMPORTANT: Do not order more cable than necessary as cable cannot be shortened.
3.7W Cable vs 3W Cable Wattage Yields
Current
3 W Cable
New
3.7 W Cable
Watts/linear ft
3
3.7
Watts/ft2 at 3.5”
Watts/ft2 at 3.75”
Watts/ft2 at 4”
Watts/ft2 at 4.75”
Watts/ft2 at 5”
Wire diameter
10.3
9.6
8.7
7.6
7.2
variable
12.7
11.84
11.1
9.3
8.9
4.37
Watts/ft2 at 2.5”
Watts/ft2 at 3”
14.4
12
17.76*
14.8
Membrane Type
(number of studs)
Prodeso (2)
Cable Fixing Strip (3)
DITRA-HEAT (2)
Prodeso (3)
Cable Fixing Strip (4)
DITRA-HEAT (3)
Cable Fixing Strip (5) & Prodeso (4)
DITRA-HEAT: 1.75”
Prodeso spacing: 1.25”
Strips: 1”
*Not recommended as it exceeds the 15 watt per square foot limit set by the National Electric Code.
5
SECTION 4
Electrical Considerations
4.1 Floor Sensors and Temperature Control
Floor Sensor (not required for all systems)
Systems using a Smartstat™ Programmable Thermostat or Easystat™ Thermostat may require a low-voltage floor sensor.
Carpet or laminate flooring manufacturers may require the use of a low-voltage sensor with their floor covering. Check with
the manufacturer for specific recommendations.
This sensor is embedded in the floor and monitors the floor temperature. Check the ohms reading of the sensor wire before
and after installation to make sure it has not changed. Most sensor wires have an ohms reading of 8,000 to 20,000 Ω,
and your ohmmeter must have a 20 kΩ setting for this measurement. The floor sensor should be centered in between two
resistance wires, leaving approximately 1.5 inches on either side and extending about 6 inches into the heated area. Avoid
placing the sensor in an area affected by a draft, a radiator or other heat source, or the sun.
A second, backup sensor may be installed and can be purchased separately.
The sensor cable should be routed to the thermostat and installed on the wall at a suitable operating height.
Do not allow any other cable to overlap the sensor cable. When heating laminate and carpeted floors (U.S. only), the
maximum temperature setting limit on thermostat should not exceed the flooring manufacturer’s recommendations.
Route TempZone™ Floor Heating Cable lead wires to a junction box or to the thermostat. Never connect the floor heating
cable to other cables. The thermostat and the cable lead wires must be connected in parallel--not in series.
Type of Wire
Color
120 V
Yellow and Black
240 V
Red and Black
Floor Sensor
Black
6
Electrical Considerations
SECTION 4
4.2 Electrical Requirements for the System
Where required, all electrical work for the floor heating cable installation must be done by a qualified, licensed electrician
in accordance with local building and electrical codes and the National Electrical Code (NEC), especially Article 424, Part
IX of the NEC, ANSI/NFPA 70 and Section 62 of the Canadian Electrical Code (CEC), Part I, as well as any other applicable
statutory requirements.
WarmlyYours recommends the following controls and accessories for the TempZone™ Floor Heating Cable:
• SmartStat™ Programmable Thermostat or EasyStat™ Thermostat. Both of these units feature a Listed Class-A GFCI
and a floor sensor to regulate the actual temperature of the floor
• Non-GFCI circuit breaker
In most installations, a Class-A GFCI is required by national and local codes for protection against ground leakage currents.
A Class-A GFCI is included with the Smartstat™ and Easystat™ thermostats. If not using a WarmlyYours thermostat, a
Class-A GFCI thermostat or circuit breaker may be needed.
The TempZone™ Floor Heating Cable should be connected to a non-GFCI circuit breaker for complete disconnection on all
poles with minimum 0.12 inch disconnection distance.
The thermostat should be installed in a double-gang box with a single-gang mud ring flush with the wall at a height of
approximately 5 feet or eye level for easy access and operation. The floor sensor cable and the TempZone™ Floor Heating
Cable cold leads shall be routed to the thermostat in separate UL Listed conduits if conduit is required by local and national
electric codes.
If the floor heating cable load exceeds the 15-amp thermostat power rating, consult WarmlyYours for information on
alternative solutions using master thermostats and power modules.
7
SECTION 4
Electrical Considerations
4.3 Wiring Diagram
COLD LEAD
N
ote: All electrical work must be done by a qualified, licensed electrician
in accordance with local building and
WIRE
electrical codes, and the National Electrical Code (NEC), especially Article 424, Part IX of the NEC, ANSI/NFPABLACK
70 and
Section 62 of the Canadian Electrical Code (CEC), Part I, as well as any other applicable statutory requirements.
RED 240V
or
Example of typical wiring diagram for 120V or 240V installations is given in Figure 1. Refer to the instructions that YELLOW
came
120V
with your specific thermostat.
BRAIDED GROUND SHEATH
FROM POWER SOURCE 120V or 240V
HOT
Black
HOT (240V) or
NEUTRAL (120V)
HOUSE GROUND
Red
Red (240V) or
Yellow (120V) Wires
Copper
Ground
THERMOSTAT
L2 (N)
Red
S
Load
L1 (L)
Black Lead
Black
Double-Gang Box
with a Single-Gang
Mud Ring
Figure 1. Wiring Diagram for 120V or 240V WarmlyYours TempZone™ Floor Heating Cable Installation
8
SECTION 5
Installation and Operation
5.1 Recommended Equipment and Items for Installation
The following equipment and items are recommended for installation of the WarmlyYours TempZone™
Floor Heating Cable :
• Ohmmeter (or multimeter)
• Circuit Check™
• Hot glue gun (if using hot glue to secure the Cable Fixing Strips)
• Industrial-grade hot glue (if using hot glue to secure the Cable Fixing Strips)
• Chisel or router to create a groove for the splice in the subfloor
• Hammer
• Screwdriver
• Protective wall plate
• Duct tape or high temperature tape
• Staples, nails, adhesive or 1⁄2 inch screws to attach the Cable Fixing Strips to the subfloor
• Class-A Ground Fault Circuit Interrupter (if not using a WarmlyYours thermostat)
• Double-gang electrical box with a single-gang mud ring/device plate for each thermostat or power module
• Listed electrical conduit (to be provided by installer)
• Permanent marker
• Tape measure
• Utility scissors
Screwdriver
Utility knife
Circuit Check™
Scissors
Tape
Marker
SmartPlan™
Tape measure
Ohmmeter
Hot glue gun
Hammer
Electrical box
9
SECTION 5
Installation and Operation
Ground Wire
5.2 Pre-Installation Preparation
Core to Sheath
5.2.1 Document the plan. Follow a SmartPlan™ obtained from WarmlyYours or prepare a floor plan of the area
to be heated. Using a floor plan, with the TempZone™ Floor Heating Cable layout marked, makes it easy to
Black
trace the heating cable routing for troubleshooting if necessary.
5.2.2 Select the appropriate TempZone™ Floor Heating Cable, ensuring it is the correct lengthYellow
and voltage.
or Red
5.2.3 Identify a suitable location for installing the thermostat and low-voltage sensor if used.
5.2.4 Mark the layout of the floor heating cable on the floor plan. Taking photographs of the area may also be
helpful.
5.2.5 Inspect the TempZone™ Floor Heating Cable visually and ensure that it is not damaged. Check voltage,
wattage, and resistance values on the label.
Black
Ground
5.2.6 Proper surface preparation of floor is extremely important. Make absolutely sure that there
are no objects on
the floor that might damage the TempZone™ Floor Heating Cable.
it is completely
Yellow Sweep the floor to ensure Yellow
or Red
or Red
clear of debris, including nails, sharp metallic objects, wood, construction
debris, and damaged
or defective
cables.
5.2.7 If applicable, install CeraZorb® on the concrete subfloor. Follow the manufacturer’s instructions when
installing the CeraZorb® insulating underlayment.
5.2.8 Check resistance of TempZone™ Floor Heating Cable with an ohmmeter upon removing it from the package.
The resistance value of the heating cable should match the value on the label attached to the cable with a
tolerance of -5/+10% allowed at 20º C (68º F). Record the resistance value on the warranty card in section 10.
IMPORTANT:The electrical resistance of the cable must be checked before you begin
and monitored throughout the installation process to ensure there has been no damage
causing shorts or breaks. WarmlyYours recommends at least three readings be taken:
1. Before starting installation
2. After securing the cable in place on the subfloor
3. After installing the flooring surface on top of the cable
IMPORTANT: Beware of Using a Continuity Checker!
G
Yellow
or Red
Core to Sheath
Ground
Black
Core to Core
Black
Yellow
or Red
Ground Braid
Core to Sheath
Black
Ground
Ground
5.2.9 Using an ohmmeter, check the insulation resistance of the cable between the core wires and to the ground
wire. It should always read infinity.
5.2.10 Use a Circuit Check™ device during cable installation. These devices will provide an audible alarm if the wire
is damaged or cut during installation. A continuity checker is not acceptable for these tests
Yellow
or Red
Ground
Yellow
or Red
Black
Core to Sheath
Black
For cables that have over 200 Ω resistance, some continuity checkers do not send enoughYellow
to get
orcurrent
Red
completely through the wire and emit the noise or light that affirms proper continuity. Please use a digital
ohmmeter.
Three (3) ohm readings should be taken for each WarmlyYours TempZone™ Floor Heating Cable at each
stage of the installation and recorded in the table on the warranty card in section 10. Refer to Figure 2 for
instructions about how to attach the ohmmeter or PowerMan™ to take each type of reading.
1. Core to Core: This is the reading between the two inner conductors on the lead wires.
2. Core to Ground, Yellow / Red Lead: This is the reading between the inner core and the outer ground
sheath on the lead wire. This reading should be infinity.
3. Core to Ground, Black Lead: This is the reading between the inner core and the outer ground sheath
on the lead wire at the finish point of the cable. This reading should be infinity.
Ground
Yellow
or Red
Core to Core
Black
Gr
Yellow
or Red
Figure 2.
Attachment points
for ohm readings
10
SECTION 5
Installation and Operation
5.3 Circuit Check™ Instructions
5.3.1 Install TempZone™ Floor Heating Cable
Install the floor heating cable in accordance with the design layout and instructions provided by WarmlyYours.
5.3.2 Test the Circuit Check™
Before connecting any wires, install the batteries in the device and turn it on and off to test the alarm. After confirming that
the alarm is in good working order, connect the wires as follows:
• Connect black inner conductor core wire to the black terminal
• Connect second inner conductor core wire to the red terminal
There are two ways of doing the next step:
1. Split the ground sheath in two. Connect one half of the ground sheath to the green terminal, turn on the Circuit
Check™, and touch the other half of the ground sheath to one of the inner conductor wires.
2. Install the entire ground into the green terminal. Turn on unit and use a paper clip as a bridge between the ground
wire and either one of the inner conductors.
Either method should activate the alarm. If the Circuit Check™ does not pass all these tests, please call WarmlyYours 24/7
Installation Support at (800) 875-5285 for assistance.
5.3.3 Activate the Circuit Check™ and Proceed to Install Flooring
Circuit Check Installation
5.3.4 If the Circuit Check™ Alarm Sounds, Stop!
If the alarm sounds, there is a short in the circuit or break in the system. Refer to the troubleshooting guide in section 8 of
this installation manual or call 24/7 Installation Support at (800) 875-5285.
WarmlyYours can ship a splice kit to repair the short. Alternatively, the wire may be repaired by an electrician. Please see
the wire repair documents “Instructions for Twin Conductor TempZone™ Repair” at www.warmlyyours.com/publications/TZTWIN-REPAIR-30027-B/download and “TempZone™ Cut & Turn Twin Conductor Solder Method Wire Repair” at
www.warmlyyours.com/publications/TZ-TWIN-SOLDER-REPAIR-30028-A/download or call us 24/7 at (800) 875-5285.
CORE
Yellow (120V)
or Red (240V)
Inner Lead
SHEATH
CORE
ON
Copper
Ground Sheath
OFF
BLACK
RED
13
Black Inner Lead
GREEN
Figure 5. How to connect the Circuit Check™ for installation
SECTION 5
Installation and Operation
5.4 Installation of TempZone™ Floor Heating Cable
5.4.1 Install TempZone™ Cable Fixing Strips
Install Cable Fixing Strips in a direction perpendicular to the direction the cable will run. Cable Fixing Strips should be
installed at least 3 inches from the wall perimeter. WarmlyYours recommends securing the cable to the floor every 20
inches using tape or hot glue to keep the cable in position until the self-leveling underlayment is applied. When working
around cabinets or vanities, install the Cable Fixing Strips at a distance that will allow the cable to be installed 1-1/2 inches
away from the cabinet or vanity base.
Each row of Cable Fixing Strips should be positioned at the appropriate intervals to ensure the desired OC spacing
(3 or 4 inches) for the installation.
Secure the Cable Fixing Strips to the floor. There are several acceptable methods for doing so.
For plywood, cement board, or similar surfaces:
• Secure Cable Fixing Strip with galvanized nails or screws.
For concrete or similar surfaces:
• Concrete nails are recommended for best results.
• Double-sided tape, hot glue, or a strong spray adhesive may be used if the floor is thoroughly cleaned and the Cable
Fixing Strips are cleaned to remove any oils.
• If spray adhesive is used, be sure to carefully follow all of the manufacturer’s instructions. WarmlyYours recommends
applying the spray adhesive to both the back of the Cable Fixing Strip and the floor.
Screw
Nail
Figure 6. Securing the Cable Fixing Strips
14
Installation and Operation
SECTION 5
5.4.2 Install the TempZone™ Floor Heating Cable
1. Begin installing the heating cable from the thermostat or junction box. Follow the pattern marked on the floor plan (if
supplied). Please note the thickness of the factory splice and cold lead and plan accordingly.
2. Unwind the cable from the spool. Secure it using the TempZone™ Cable Fixing Strips. Avoid bunching the cable or
crossing over other parts of the cable.
3. The TempZone™ Floor Heating Cable should be installed in a uniformly-spaced serpentine pattern. Refer to either
“Product Selection Guide--120V” or “Product Selection Guide--240V” in section 9 for spacing information.
4. Take note of the cable’s halfway point marking indicated on the cable. This mark should match the halfway point
indicated on the custom SmartPlan™ supplied with the order (optional).
5. Route the power leads from the floor to the thermostat box. If using multiple heating cables, route the power leads from
the floor to a junction box or thermostat box in the wall.
NOTE: Leads should be protected at the point they leave the floor. Rigid metal conduit, intermediate metal
conduit,
rigid nonmetallic conduit, electrical metallic tubing, or other means approved by local electrical codes
should be used.
6. For installations including a thermostat, the low-voltage floor sensor should be placed
in between the loops created by the cable and held in place with a small amount of
thinset or hot glue. See Figure 7.
The sensor wire cannot cross any heating cable or lead wire. It must extend at least 6
inches into the heated area. The sensor and its wire should be covered directly with
thinset or self-leveling underlayment.
The cold lead wires should be placed above the subfloor, along the side of the heated
area at least 2 inches from the heating wire. Secure the cold lead wires with a suitable
tape or hot glue before the thinset or self-leveling underlayment is applied over the
cables.
Figure 7. Placement of the
floor temperature sensor
7. Use an ohmmeter check the continuity, insulation resistance, and resistance values again after the cable has been
installed. Compare these post-installation values with pre-installation values to ensure they are consistent. Record postinstallation values on the warranty card in section 10.
Attach Circuit Check™ to cold leads at this time.
15
Installation and Operation
SECTION 5
8. Apply thinset or self-leveling compound over the heating cable and subfloor. Acrylic, latex, or polymer-modified thinset
cement may be used. Ensure that the material you select is compatible with the flooring material. Contact the adhesive
manufacturer for more information and curing times.
Ensure that there are no air gaps during application of thinset or self-leveling underlayment (SLU). Make sure the
heating cable, factory splices, and low-voltage thermostat sensor (if used) are completely embedded in the thinset or
SLU. If SLU is used, be sure to use any primer required by the manufacturer.
A single- or double-layer method may be used over any subfloor (plywood, cement slab, concrete backer board, or
mud bed). These methods are suitable for any stone or tile floor covering. For carpet (U.S. only), vinyl or laminate floor
coverings, WarmlyYours recommends covering the floor heating system with 3/8 inch of self-leveling underlayment
(total depth, whether the single- or double-layer application method is used) to create a smooth surface for installing
these types of flooring. Follow the instructions appropriate to the type of floor covering to be used.
CAUTION: Careless use of the trowel can damage the heating cable. Never drop or bang a trowel directly
on the cable.
5.4.3 Instructions for Installation in Wet Locations
1. Installation shall be in accordance with the National Electrical Code, NFPA-70 and CAN/CSA- C22.1, Canadian Electrical
code (CEC), Part 1 and that final acceptance is to be made in the field by the Authority Having Jurisdiction (AHJ).
2. WarmlyYours recommends using a separate heating cable for shower areas. Note: The UL Listing for this product does
not cover use in wet locations in the United States. Installations shall be in accordance with the National Electric Code,
NFPA 70 and any other applicable jurisdictional codes and final acceptance is to be made by the Authority Having
Jurisdiction (AHJ).
3. If insulation board is being used over a slab, use suitable glue or cement-based adhesive, or thinset mortar to adhere it
to the slab. If installing in a wet location, ensure the slope of the mortar bed is maintained so that it directs water to the
drainpipe.
16
Installation and Operation
SECTION 5
1. Weave the cable back and forth across the area at the desired
spacing. Maintain slight tension on the cable to ensure it does
not pull loose. If desired, use hot glue at intervals to help
ensure it stays secure. NEVER space the cables less than 3” apart.
RPM Mats
3” Spacing
3.5” Spacing
2. Mark where the factory splice will be placed. Cut the matting or
membrane and insert splice. It may be necessary to secure the
splice to the floor with hot glue, adhesive or thinset.
3. Embed the heating cable between studs, at a spacing of 3
studs. Closer spacing may result in overheating and damage to
building structures. A wider spacing may not provide sufficient
power to warm the floor.
4. Cable must be turned or a u-shaped “jog” created at every 10ft
(3m) of cable run.
5. Always remember to install the thermostat sensor (if applicable)
6” into an open loop of the heating wire. Cut into membrane as
shown.
17
Schluter Ditra-Heat (3.5”)
or Prodeso Mats (3.75”) Spacing
Installation and Operation
SECTION 5
5.4.4 Instructions for Installation Under Tile and Stone Flooring
Option 1: Single-layer method for tile and stone
Apply a layer of 3/8 inch latex-modified thinset cement or self-leveling underlayment (SLU) over the heating cable. Lay the
tile or stone directly into that layer of thinset cement.
OR
Option 2: Double-layer method for tile and stone
Embed the heating cable in a skim coat of latex-modified thinset or self-leveling underlayment, completely covering the
heating element and the sensor wire. Apply a second layer of thinset and lay tiles as usual. The recommended depth for
both layers of thinset or SLU is 3/8 inch.
The single-layer method is used most by experienced installers in small applications with easy access. WarmlyYours does
NOT recommend the single-layer method for installing mosaics or tiles of different sizes or if you have not installed an
electric radiant heating system under tile or stone before.
Waiting Period: Regardless of method used, installation of floor heating cable under tile or stone requires 2 to 28 days
for the latex-modified thinset or self-leveling underlayment to cure. Follow manufacturer recommendations for cure times
applicable to your installation.
IMPORTANT: Do NOT turn on the WarmlyYours TempZone™ Floor Heating Cable system until after the
thinset or self-leveling underlayment (SLU) has fully cured. Doing so will result in damage to the system
and cause the thinset or SLU to become brittle. Failure of the thinset or SLU may cause damage to the
embedded cable. This type of damage is not covered by the WarmlyYours warranty.
5.4.5 I nstructions for Installation Under Carpet, Vinyl, or Laminated Flooring
Before applying SLU, ensure that the cable is firmly secured to the subfloor to prevent it from floating to the top of
the self-leveling underlayment. Attach the Circuit Check™ at this time. Cover cable with 3/8 inch layer of self-leveling
underlayment.
18
Installation and Operation
SECTION 5
5.4.6 Instructions for Installation Under Hardwood Flooring
Note : Although TempZone™ Floor Heating Cable is approved for direct contact with combustible material,
WarmlyYours strongly recommends that the cable be embedded in thinset, self-leveling underlayment, cementbased adhesive glue, or tile adhesive under wood flooring surfaces.
STEP 1: Install wood sleepers
Using nails, adhesive, or other acceptable means of attachment, install wood sleepers
(strips of wood 1 to 2 inches wide and 3/8 to 1/2 inch high) at intervals 19 inches
apart, or distance specified by the flooring manufacturer, perpendicular to the planned
direction of hardwood boards.
The plywood subfloor must leave appropriate spacing and gaps for any planned runs
of cable to other heated areas. The sleepers are fixed in such a manner that they create
a required gap between two sleepers in which the warming system can be installed.
STEP 2: Install the floor warming system
Install Cable Fixing Strips as described in section 5.5.1. Using the Cable Fixing Strips to
secure the cable, install the floor warming system into the gap created by the sleepers.
Carefully return the power leads to the power supply alongside the warming system
and wood sleepers. Attach PowerMan™ and Circuit Check™ to the cold leads at this
time. Refer to section 5.3 for PowerMan™ instructions and section 5.4 for Circuit
Check™ instructions.
STEP 3: Cover the floor warming system with self-leveling compound
After the warming system has been put in place, it should be covered with self-leveling
compound up to the height of the sleepers. Do not cover the sleepers. The tops of the
sleepers should remain uncovered and visible.
STEP 4: Install hardwood flooring
Allow the appropriate time for the self-leveling compound to completely dry and cure.
After the compound has dried and cured, install the hardwood flooring. The hardwood
floor can be installed by nailing it to the wood sleepers. Be careful not to place nails or
staples near the system’s heating cable or power lead.
19
SECTION 6
Testing
6.1 Testing the Cable
IMPORTANT: Do NOT supply the system with electric current to test.
All testing should be done with a digital ohmmeter. Supplying the system with a 120V or 240V electric current before the
installation is complete is not needed to test the system.
6.2 Take the Ohm Readings
The electrical resistance of the WarmlyYours TempZone™ Floor Heating Cable must be checked before you start and
monitored throughout the installation process to ensure there has been no damage causing shorts or breaks.
We recommend at least three readings be taken:
1. Before starting installation
2. After securing the cable in place on the subfloor
3. After installing the flooring surface on top of the cable
Use an ohmmeter to measure the resistance.
6.3 Record the Ohm Readings
The value on the UL label should be within -5/+10% variance at 20ºC (68ºF) of the original measurement indicated on the
label. The electrician should carefully mark the initial ohm reading taken onto the warranty card in section 10. Should the
initial ohm reading be outside the -5/+10% variance, refer to section 8, Troubleshooting, or call WarmlyYours Technical
Support at (800) 875-5285.
The specified resistance value and other important information can be found on the WarmlyYours TempZone™ Floor
Heating Cable product label. Figure 8 depicts a sample product label. The information provided in the figure is for
illustration purposes only. Refer to label included with the cable for actual values.
Ohm value
QR code contains all
information about the
system. Use a smart
phone to scan QR code
and access information.
A ground fault
protection device
must be used with
this heating device.
Figure 8. Sample product label
20
SECTION 6
Testing
6.4 Go by the Numbers
The resistance should be measured from the inner core of the yellow (120V) or red (240V) lead wire at one end to the inner
core of the black lead wire at the other end. Make sure that the probe of the ohmmeter does not touch the tinned sheath
wire at either end. Do not hold the wires onto the probes with your fingers. Even your body’s electrical resistance can
affect the reading if you touch the meter poles. A digital meter is easier to use and strongly recommended. Verify that the
batteries of the ohmmeter are good. Set your ohmmeter to measure resistance in the range of 0 to 200 Ω.
For cables that have over 200 Ω resistance, it may be necessary to set the ohmmeter to the next higher range of
measurement to get an accurate ohm reading.
Three (3) ohm readings should be taken for each WarmlyYours TempZone™ Floor Heating Cable at each stage of the
installation and recorded in the table on the warranty card in section 10. Refer to Figure 9 for instructions about how to
attach the ohmmeter or PowerMan™ to take each type of reading.
1. Core to Core: This is the reading between the two inner conductors on the lead wires.
2. Core to Sheath, Yellow / Red Lead: This is the reading between the inner core and the outer ground sheath on the lead
wire. This reading should be infinity.
3. Core to Sheath, Black Lead: This is the reading between the inner core and the outer ground sheath on the lead wire at
the finish point of the cable. This reading should be infinity.
Core to Core
Black
Yellow Yellow
Yellow
or Red or Red
or Red
Core to Ground
Black
Black
Ground Ground
Ground
Yellow Yellow
Yellow
or Red or Red
or Red
The ground wire may differ from the images above.
The ground wire may be represented as a additional wire with a stripe.
The testing procedure is still performed the same way.
Figure 9. Attachment points for ohm readings
21
Core to Ground
Ground Ground
Ground
Black
Black
Black
Operating Tips
SECTION 7
7.1 Operating Tips
7.1.1 When first energized, the TempZone™ Floor Heating Cables may take approximately 1 to 3 hours or more to fully warm
your floor. Heating results will vary depending on climate and building materials.
7.1.2 Energy consumption will vary depending on user preferences. To reduce energy consumption, set the thermostat to a
lower temperature setting or operate for a shorter duration.
7.1.3 Energy consumption can be minimized by turning the system off when floor heat is not required. However, additional time
will be needed for the floor to warm up when the system is turned on again.
7.1.4 WarmlyYours recommends and offers thermostats with a setback option. This option reduces warm-up time by setting the
system to operate at a lower floor temperature, instead of completely turning it off, during the setback period(s).
7.1.5 Avoid placing thick mats, rugs, mattresses, and broad-based or box-bottomed furniture on the heated floor, especially
where the floor temperature sensor is located. These objects restrict the transfer of heat away from the cables and trap heat.
This causes the floor beneath the object to become warmer than other areas in the room. Trapped heat may also cause
discoloration or damage to some floor covering materials.
7.1.6 Avoid using mats with rubber or vinyl backing, as the heat may cause them to decompose and stain the floor covering.
7.1.7 When heating a hardwood floor, the flooring manufacturer may require that the floor be kept at a steady temperature,
without a setback. Please consult the flooring manufacturer for any requirements to radiant heating.
22
SECTION 8
Troubleshooting
8.1 Identify the Problem
If the system is not functioning properly, refer to the “Quick Reference Troubleshooting Guide” to determine the cause of
the problem.
Quick Reference Troubleshooting Guide
Ohm Reading
Zero
Lower than the acceptable range,
but some continuity is present
Within range (-5/+10%) of
specified value on UL label
Higher than acceptable range
Infinity
What It Indicates
What to Do Next
Open circuit or short
Obtain ShortStop fault finder*
from WarmlyYours to check
distance to break.
Ohmmeter batteries may be low
Replace batteries and take ohm
readings again.
Multiple electrical shorts
Obtain ShortStop fault finder*
from WarmlyYours. Take a reading
between each core wire and
ground to determine the location
of the short. No break
Check for an electrical short.
Possible short
Obtain ShortStop fault finder*
from WarmlyYours. Take a reading
between each core wire and
ground to determine the location
of the short. Ohmmeter may be set to
incorrect scale
Set ohmmeter to correct scale and
test again. (Correct scale settings:
0 to 200 Ω for cable;
0 to 20,000 Ω for sensor wire)
Possible short
Obtain ShortStop fault finder*
from WarmlyYours. Take a reading
between each core wire and
ground to determine the location
of the short. Possible break
Contact WarmlyYours for
assistance.
*Note: A floor plan with the layout of the installation is required to determine the location of the short. For installations
without a plan, please contact WarmlyYours technical support at (800) 875-5285.
23
Troubleshooting
SECTION 8
8.2 Troubleshooting
8.2.1 Locating a Fault in the TempZone™ Floor Heating Cable
Use a Circuit Check™ device during cable installation. These devices will provide an audible alarm if the wire is damaged
or cut during installation. A continuity checker is not acceptable for these tests.
Beware of Using a Continuity Checker!
With cables that have over 200 Ω resistance, some continuity checkers do not send enough current to get completely
through the wire and emit the noise or light that affirms proper continuity. For this reason, we always recommend using a
digital ohmmeter for any product testing or troubleshooting.
After the installation, if necessary, the position of a break can be found with the WarmlyYours Troubleshooting Kit. A time
domain reflectometer (ShortStop) will not be able to find a break without an installation plan. Repair kits and guidance
are available from WarmlyYours 24/7 Technical Support at (800) 875-5285, or go to www.WarmlyYours.com/support for
additional information.
24
Troubleshooting
SECTION 8
8.2.2 Electrical Fault Finding
If the system is not functioning properly, turn off the system and have a licensed, certified electrician perform the
following:
• Complete all steps of the installation process.
• Verify that all wiring connections, including grounding of the system, are correct.
• Check the sensor wire for proper ohm reading.
• Ensure all wires have been connected, including grounding of the system, in accordance with the wiring diagrams.
• Verify that the breaker supplying power to the WarmlyYours thermostat is a non-GFCI circuit breaker (Note: If using a
thermostat not provided by WarmlyYours, a GFCI-circuit breaker may be required).
• Make sure multiple cables have been wired in parallel and not in series.
• Confirm that the thermostat is receiving the correct voltage and outputting the same voltage when
calling for heat.
• Using a well-calibrated, digital ohmmeter with good batteries, check the ohm resistance level of each heating cable.
Refer to sections 5.2.10 and 5.3 for instructions about how to attach the ohmmeter. Verify that these values are within
-5%/+10% at 20ºC (68ºF) of the resistance value listed on the product label. If the measured values exceed the
acceptable range, refer to the “Quick Reference Troubleshooting Guide” in section 8.1. If the measured value is not
within range of the original reading, the cable may have been damaged in some way during installation.
If all of the above items have been completed and the system is still not operating correctly, then determine if there is a
break or a short under the floor.
8.2.3 Checking for Breaks or Shorts
To check for a break, measure the ohm resistance of each cable. When taking an ohm reading, ensure that you do the
following:
• Do not touch either of the probe ends with any part of your body. If the probe end is in contact with the body, the meter
will measure the internal resistance of your body, not the cable.
• Set ohmmeter to the proper scale (0 to 200 Ω for heating cable or 0 to 20,000 Ω for the sensor wire).
The ohm resistance readings should be within -5/+10% at 20ºC (68ºF) of the nominal resistance indicated by the factory
on the UL label. Refer to the “Quick Reference Troubleshooting Guide” in section 8.1. to determine what the ohm readings
indicate.
25
Troubleshooting
SECTION 8
Additional Information for Identifying Electrical Shorts
In some rare occasions during installation, a high pressure point on the cable can occur and cause a break in the insulation
between the core conductor and the metal sheath. This opening in the insulation layer can create an electrical short,
even though the ohm reading from one line conductor to the other line conductor is normal and does not indicate a
circuit break. In these rare circumstances, a continuity test will show no continuity (a reading of infinity) between the line
conductor and the ground wire and/or between the other line core conductor and the ground. A megaohm meter can be
used to test the wire insulation in these cases.
There should be no continuity (indicated by a resistance reading of infinity, not zero) between each line conductor and
ground. If the ohmmeter or PowerMan™ reveals continuity between both the line conductor and ground, there is a short in
the circuit.
8.2.4. Checking for Breaks or Shorts Using an Underground Fault Detector
There are two ways to locate breaks or electrical shorts with underground fault detectors:
1. A break or short can most easily be found with a high potential (hipot) insulation tester, a high-voltage generating device
that generates a ground or heat at the break point. The hipot can be used with infrared cameras to scan the floor and
detect the exact location of the break. Contact WarmlyYours for more information about renting our troubleshooting kit.
2. A break or short can sometimes be found with a time domain reflectometer (ShortStop fault finder), which measures the
distance of the wire between the tester and the short point. A floor plan with the layout of the installation is required to
determine the location of the short.
26
SECTION 9
Addenda
Product Selection Guide 120V
3-inch Spacing
Heating
Cable
Length
Power
Total
Resistance
in Ω @20°C
(68ºF)
Feet
Watts
Nom
Amps
TCT120-3W-030
30
90
160.00
TCT120-3W-040
40
120
TCT120-3W-050
50
TCT120-3W-070
Total Cable
Coverage
(sq. ft.)*
Total No.
of Cable
Guides
(rounded)
Watts
per
Square
Foot
Total Cable
Coverage
(sq. ft.)*
0.75
9
9
10
12
12
8
120.00
1.00
11
12
11
15
12
8
150
96.00
1.25
14
12
11
19
20
8
70
210
68.57
1.75
19
20
11
25
20
8
TCT120-3W-090
90
270
53.33
2.25
25
20
11
32
24
8
TCT120-3W-120
120
360
40.00
3.00
32
24
11
43
35
8
TCT120-3W-150
150
450
32.00
3.75
40
35
11
53
40
8
TCT120-3W-180
180
540
26.67
4.50
48
35
11
63
48
9
TCT120-3W-220
220
660
21.82
5.50
58
48
11
77
54
9
TCT120-3W-260
260
780
18.46
6.50
68
54
11
90
70
9
TCT120-3W-300
300
900
16.00
7.50
78
54
12
104
77
9
TCT120-3W-340
340
1020
14.12
8.50
89
70
11
117
88
9
TCT120-3W-375
375
1125
12.80
9.38
97
70
12
129
96
9
TCT120-3W-432
432
1296
11.11
10.80
112
77
12
148
104
9
TCT120-3W-468
468
1404
10.26
11.70
121
88
12
161
117
9
PRODUCT CODE
Current
4-inch Spacing
*Based on a square room with an unheated border of 3 inches
27
Total No. of Watts per
Cable Guides Square
(rounded)
Foot
SECTION 9
Addenda
Product Selection Guide 240V
PRODUCT CODE
Heating
Cable
Length
Feet
3-inch Spacing
Total
Resistance
Power
in Ω
Current
Total No.
Total Cable
@20°C
of Cable
Coverage
(68ºF)
Guides
(sq. ft.)*
(rounded)
Watts
Nom
Amps
4-inch Spacing
Watts
per
Square
Foot
Total Cable
Coverage
(sq. ft.)*
Total No. of
Cable Guides
(rounded)
Watts per
Square
Foot
TCT240-3W-055
55
165
349.09
0.69
15
12
11
20
20
8.3
TCT240-3W-065
65
195
295.38
0.81
18
20
11
24
20
8.1
TCT240-3W-075
75
225
256.00
0.94
21
20
11
27
24
8.3
TCT240-3W-095
95
285
202.11
1.19
26
24
11
34
30
8.4
TCT240-3W-115
115
345
166.96
1.44
31
24
11
41
35
8.4
TCT240-3W-155
155
465
123.87
1.94
41
35
11
55
48
8.5
TCT240-3W-195
195
585
98.46
2.44
52
40
11
68
54
8.6
TCT240-3W-235
235
705
81.70
2.94
62
48
11
82
70
8.6
TCT240-3W-275
275
825
69.82
3.44
72
54
11
95
70
8.7
TCT240-3W-315
315
945
60.95
3.94
82
70
12
109
77
8.7
TCT240-3W-355
355
1065
54.08
4.44
92
70
12
122
88
8.7
TCT240-3W-395
395
1185
48.61
4.94
103
77
12
136
96
8.7
TCT240-3W-435
435
1305
44.14
5.44
113
77
12
150
104
8.7
TCT240-3W-515
515
1545
37.28
6.44
133
96
12
177
126
8.7
TCT240-3W-595
595
1785
32.27
7.44
153
117
12
204
150
8.8
TCT240-3W-675
675
2025
28.44
8.44
174
126
12
231
160
8.8
TCT240-3W-749
749
2247
25.63
9.36
192
126
12
255
176
8.8
TCT240-3W-864
864
2592
22.22
10.80
221
150
12
294
198
8.8
TCT240-3W-935
935
2805
20.53
11.69
239
160
12
318
216
8.8
*Based on a square room with an unheated border of 3 inches
28
SECTION 9
Addenda
Product Selection Guide 120V
PRODUCT CODE
Heating
Cable
Length
Power
Total
Resistance
in Ω @20°C
(68ºF)
Feet
Watts
Nom
3-inch Spacing
Current
Amps
4-inch Spacing
Total Cable
Coverage
(sq. ft.)*
Total No.
of Cable
Guides
(rounded)
Watts
per
Square
Foot
Total Cable
Coverage
(sq. ft.)*
Total No.
of Cable
Guides
(rounded)
Watts
per
Square
Foot
TCT120-3.7W-030
30
111.0
129.73
0.93
8.9
9.00
12.4
11.6
16.00
9.5
TCT120-3.7W-040
40
148.0
97.30
1.23
11.6
16.00
12.7
15.2
16.00
9.7
TCT120-3.7W-050
50
185.0
77.84
1.54
14.3
16.00
12.9
18.8
20.00
9.9
TCT120-3.7W-070
70
259.0
55.60
2.16
19.7
20.00
13.2
25.8
30.00
10.0
TCT120-3.7W-090
90
333.0
43.24
2.78
24.9
20.00
13.4
32.8
30.00
10.2
TCT120-3.7W-120
120
444.0
32.43
3.70
32.8
30.00
13.5
43.2
42.00
10.3
TCT120-3.7W-150
150
555.0
25.95
4.63
40.6
42.00
13.7
53.6
48.00
10.4
TCT120-3.7W-180
180
666.0
21.62
5.55
48.4
42.00
13.8
63.9
48.00
10.4
TCT120-3.7W-220
220
814.0
17.69
6.78
58.8
48.00
13.9
77.7
63.00
10.5
TCT120-3.7W-260
260
962.0
14.97
8.02
69.1
63.00
13.9
91.4
70.00
10.5
TCT120-3.7W-300
300
1,110.0
12.97
9.25
79.4
63.00
14.0
105.1
88.00
10.6
TCT120-3.7W-340
340
1,258.0
11.45
10.48
89.7
70.00
14.0
118.7
88.00
10.6
TCT120-3.7W-375
375
1,388.0
10.37
11.57
98.7
70.00
14.1
130.6
108.00
10.6
TCT120-3.7W-432
432
1,598.0
9.01
13.32
113.3
88.00
14.1
150.1
117.00
10.6
*Based on a square room with an unheated border of 3 inches
29
SECTION 9
Addenda
Product Selection Guide 240V
PRODUCT CODE
Heating
Cable
Length
Feet
3-inch Spacing
Power
Total
Resistance
in Ω
@20°C
(68ºF)
Current
Watts
Nom
Amps
4-inch Spacing
Total Cable
Coverage
(sq. ft.)*
Total No.
of Cable
Guides
(rounded)
Watts
per
Square
Foot
Total
Total No.
Cable
of Cable
Coverage
Guides
(sq. ft.)* (rounded)
Watts
per
Square
Foot
TCT240-3.7W-055
55
204.0
283.05
0.85
15.7
16.00
13.0
20.5
20.00
9.9
TCT240-3.7W-065
65
241.0
239.50
1.00
18.3
20.00
13.1
24.1
20.00
10.0
TCT240-3.7W-075
75
278.0
207.57
1.16
21.0
20.00
13.2
27.6
30.00
10.1
TCT240-3.7W-095
95
352.0
163.87
1.46
26.2
30.00
13.4
34.5
30.00
10.2
TCT240-3.7W-115
115
426.0
135.37
1.77
31.5
30.00
13.5
41.5
42.00
10.3
TCT240-3.7W-155
155
574.0
100.44
2.39
41.9
42.00
13.7
55.3
48.00
10.4
TCT240-3.7W-195
195
722.0
79.83
3.01
52.3
48.00
13.8
69.1
63.00
10.4
TCT240-3.7W-235
235
870.0
66.24
3.62
62.6
48.00
13.9
82.8
70.00
10.5
TCT240-3.7W-275
275
1,018.0
56.61
4.24
73.0
63.00
13.9
96.5
70.00
10.5
TCT240-3.7W-315
315
1,166.0
49.42
4.86
83.2
70.00
14.0
110.2
88.00
10.6
TCT240-3.7W-355
355
1,314.0
43.85
5.47
93.5
70.00
14.0
123.8
108.00
10.6
TCT240-3.7W-395
395
1,462.0
39.41
6.09
103.8
88.00
14.1
137.5
108.00
10.6
TCT240-3.7W-435
435
1,610.0
35.79
6.71
114.0
88.00
14.1
151.1
117.00
10.7
TCT240-3.7W-515
515
1,906.0
30.23
7.94
134.5
108.00
14.2
178.3
140.00
10.7
TCT240-3.7W-595
595
2,202.0
26.16
9.17
154.9
117.00
14.2
205.4
150.00
10.7
TCT240-3.7W-675
675
2,498.0
23.06
10.41
175.3
140.00
14.2
232.6
176.00
10.7
TCT240-3.7W-749
749
2,771.0
20.78
11.55
194.2
140.00
14.3
257.6
204.00
10.8
TCT240-3.7W-864
864
3,197.0
18.02
13.32
223.4
165.00
14.3
296.5
216.00
10.8
*Based on a square room with an unheated border of 3 inches
30
SECTION 10
Warranty Information
Please complete and return the warranty card
Thank you for purchasing your new WarmlyYours TempZone™ Floor Heating Cable. To register your system, go
online to www.warmlyyours.com/floor-heating/twin-cable/warranty, or simply complete, detach and mail this
warranty card within 30 days of date of purchase to: WarmlyYours, 590 Telser Rd., Lake Zurich, IL 60047. For your
convenience, you may also fax this card to (800) 408-1100. WarmlyYours recommends that you make a copy for
your records.
System Warranty Registration Card
1. HOMEOWNER INFORMATION
Name
Phone
Address
Email
City
State
Postal/Zip Code
Fax
2. FLOOR INSTALLER INFORMATION
Check here if homeowner installed
Company Name
Phone
Address
Email
City
State
Postal/Zip Code
Fax
3. ELECTRICIAN INFORMATION
Company Name
Phone
Address
Email
City
State
Postal/Zip Code
Fax
4. HEATING SYSTEM INFORMATION
Cable Length
Install Date
Cable 1
Installed Under:
oTile
oStone
oLaminate Wood
oOther
(Please specify other) _____________________________
Cable 2
Subfloor Material
Cable 5
Set In
Cable 6
Total Cable Installed
Cable 7
31
Cable 3
Cable 4
Final Ohm Reading
Warranty Information
Terms and Conditions
WarmlyYours, Inc. warrants the WarmlyYours
TempZone™ Floor Heating Cable electric floor warming
system (“the Product”) to be free from defects in materials
and workmanship for twenty-five (25) years from the
date of sale, provided that the Product is installed in
accordance with the WarmlyYours product installation
manual, any special written or oral design or installation
guidelines provided by WarmlyYours for the specific
project that the Product is intended, the provisions
of the National Electrical Code (NEC), or Canadian
Electrical Code (CEC) and all applicable local building
and electrical codes. If the Product is determined to be
defective in materials and workmanship, and has not
been damaged as a result of misuse, misapplication or
improper installation, WarmlyYours will reimburse the
cost of locating the fault, repair of Product, and any labor
and materials required to perform the repair. If repair
of the Product is not feasible, WarmlyYours will replace
the Product or refund the original cost of the Product.
Controls sold under the WarmlyYours name are warranted
for specific coverage periods. Please see http://www.
warmlyyours.com/warranty for the length of warranty
coverage for each control. Should the control be defective
or malfunction, return the control to WarmlyYours and it
will be repaired or replaced (at WarmlyYours’ discretion).
The warranty does not cover removal or reinstallation
costs. See entire warranty in packaging.
WarmlyYours Inc. assumes no responsibility under this
warranty for any damage to the Product prior to or during
installation by anyone, including, but not limited to
tradespeople or visitors to the job site, or damage caused
as a result of post-installation work. Call our toll free
number, (800) 875-5285, if you have any questions about
installation. The Limited Warranty is null and void if the
Product owner or his representative attempts to repair the
Product without receiving authorization. Upon notification
of an actual or possible problem, WarmlyYours will issue
an Authorization to Proceed under the terms of the Limited
Warranty.
Warranty Subject to the Following Conditions: 1. The
warranty of the warming system must be registered by
completing and returning the attached “System Warranty
Registration Card” to WarmlyYours, Inc. within thirty (30)
days of date of purchase. Please keep your invoice, as
proof of date of purchase will be required in the event
of a claim. 2. The heating cable must be installed flat
under tile, stone, resilient flooring or laminate wood in
a latex-modified thinset or a Portland-based cement. 3.
The warming system must be electrically grounded and
protected by a GFCI (Ground Fault Circuit Interrupter).
4. The installation must comply with all national and
local electrical and building codes, including the National
SECTION 10
Electrical Code (NEC), the Canadian Electrical Code
(CEC), Part I, and Authority Having Jurisdiction (AHJ), as
well as any other applicable statutory requirements. 5.
The manufacturer hereby reserves the right to inspect the
installation site at any reasonable time. 6. The warranty is
not automatically transferred with change of ownership,
but the manufacturer may, on application, transfer the
warranty for the period remaining. This transfer is solely at
the discretion of the manufacturer. 7. The warming system
should be used strictly in accordance with the following:
7.1 The voltage of the circuit should match the voltage of
the warming system, and the size of the circuit should be
such that the warming system does not occupy more than
80% of the circuit capacity. 7.2 Should you feel no warmth
on the floor within 60 minutes, verify that there is power
to the control or thermostat. Contact WarmlyYours after
verifying that there is power through the load wires. Under
no circumstances should you or anyone else tamper with
or attempt to repair the warming system - this will render
the warranty null and void. 7.3 Switch the warming system
on and off as you would any conventional electric heater,
although timers or thermostats may be used if preferred.
7.4 Use reasonable care in the operation of the warming
system. Do not drop heavy articles on the flooring or
pierce the flooring with sharp objects. 7.5 All restrictions
and warnings detailed in the installation manual must be
strictly followed.
WARMLYYOURS, INC. DISCLAIMS ANY WARRANTY
NOT PROVIDED HEREIN, INCLUDING ANY IMPLIED
WARRANTY OF MERCHANTABILITY OR IMPLIED
WARRANTY OF FITNESS FOR A PARTICULAR
PURPOSE. WARMLYYOURS FURTHER DISCLAIMS
ANY RESPONSIBILITY FOR SPECIAL, INDIRECT,
SECONDARY, INCIDENTAL, OR CONSEQUENTIAL
DAMAGES ARISING FROM OWNERSHIP OR USE OF
THIS PRODUCT, INCLUDING INCONVENIENCE OR
LOSS OF USE. THERE ARE NO WARRANTIES WHICH
EXTEND BEYOND THE FACE OF THIS DOCUMENT.
NO AGENT OR REPRESENTATIVE OF WARMLYYOURS
HAS ANY AUTHORITY TO EXTEND OR MODIFY
THIS WARRANTY UNLESS SUCH EXTENSION
OR MODIFICATION IS MADE IN WRITING BY A
CORPORATE OFFICER.
WarmlyYours makes no claim as to the amount of floor/
room temperature rise, the time to reach a given floor/
room temperature or final floor/room temperature is due
to the innumerable variations in building construction and
environmental conditions.
RETURN POLICY
Product will be accepted for return if it is in resalable
condition. The product must be in exactly the same
condition as when we shipped it to you.
32
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