Slab Heating Mat 240V, 3′ x 52′, 156 sq.ft., 13.0A


Part Number: WSHM-240-03052
This support page provides publications, manuals, specifications, videos, support articles, and common support questions


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Common Support Questions (20)

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Common Support Questions


Yes. Unlike the heating cable for electric floor heating, the cold lead wires can be trimmed or lengthened with additional lead wire which can be purchased from WarmlyYours.

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When installing electric floor heating over a concrete slab, an insulating underlayment like CeraZorb is highly recommended to ensure efficient operation, faster heating times and warmer floor temperatures.

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The amount of amperage draw depends upon how large the area is that you are heating. For coverage of areas less than 30 square feet, the system will draw less than 3 or 4 amps. If you have a larger area over 120 square feet of heated space, then you may need a larger breaker plus additional controls. No matter what the size of the area you choose to heat, we recommend a dedicated circuit for your electric radiant floor heating system.

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No. A bathroom floor would be installed in the same way. Our TempZone floor heating systems are wet-location listed and ideal for bathroom floors.

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Yes, we have TempZone Shower and Bench mats with sizes designed specifically for shower installation and they are wet location listed for for installing electric radiant floor heating to a shower.

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Yes, but any furniture that may trap heat, such as pieces with an enclosed bottom, should be avoided. Furniture on legs with a clearance of at least 3" is permissible.

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Yes, we offer several options to help make your floor heating system water resistant or waterproof. Our TempZone product line is designed for wet areas - making it completely safe for rooms that will have water on the floor at times or may experience leaks or flooding. We also offer waterproofing bands for our TempZone Cable + Prodeso Uncoupling Membrane system. Allowing you to waterproof all seams and the perimeters of the wall - guaranteeing that your floor heating system stays safe and prevents water from leaking to areas below.

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There are heating systems designed for floating floors, such as our Environ system. However, the flooring must be rigid enough so it does not mold itself to the heating cables over time.

Check the flooring manufacturer's floor heating recommendations. In most cases, the heating system will need to be embedded beneath the flooring. Check for all "flatness" requirements for the flooring you choose. The flattest floors utilize self-leveling cement when installed correctly.

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Electric-resistance heating cables and systems have no polarity. This includes all current WarmlyYours heating elements.

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Yes, if the flooring manufacturer recommends this installation method. In most cases, the heating element will still need to be embedded in self-leveling cement before the flooring is installed.

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Yes, Luxury Vinyl Tile (LVT) is typically installed over the embedded heating element using self-leveling cement (SLC). Many people choose to use SLC when installing tile over floor heating.

We do not suggest using thinset to encase the heating wires with LVT, as it is very difficult to get thinset completely flat.

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Stop installation, box out a 3"×3" area surrounding the damaged area and call tech support at (800) 875-5285.

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The requirements are: 20 watts per square foot foot (with 3" spacing) without a floor covering; or 15 watts per square foot (with 5" spacing of cable only) with a floor covering. To calculate your exact power requirements, multiply the square feet by 20 or 15, as listed above and then divide by the voltage (120V or 240V) to arrive at Amps.

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You can control your slab heating system with any WarmlyYours nSpiration Series thermostat. Depending on the size of your project, you may also need to add a relay or nJoin power module.

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Any trade professional is qualified to layout cables and/or mats; electricians must make the electrical connections and test the wire; you can hire a concrete contractor to install the concrete for you.

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Test the product using a digital ohm meter as shown here. Also test the slab heating product using a Mega Ohm meter as shown here. And this video shows how to do the Ohm test.

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You should install the cable 2-3" below the finished surface, and attach it to rebar and/or reinforcing wire mesh to secure the cable in place.

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The layers for the full installation are as follows:

  • Bottom: 8-10" of compressed crushed rock aggregate (may already exist)
  • 2" polystyrene insulation
  • 2-3" layer of concrete
  • Rebar and/or reinforcing mesh and attach the cable or mat
  • Top: Pour a 2-3" layer of concrete as the final flooring surface

Call tech support at (800) 875-5285 to customize this to your unique application.

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The slab heating cable sits in the middle of concrete pour. Here are the layers for this application from bottom to top:

  • 8-10" of compressed crushed rock aggregate
  • 2" polystyrene insulation
  • 2 - 3" layer of concrete
  • Rebar and/or reinforcing mesh
  • Attach slab heating cable to rebar/mesh
  • Final layer: 2-3" or concrete as final flooring surface

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One thermostat can control multiple heating mats/cables as long as all the elements are using less than 15 amps. For TempZone™ Flex Roll systems for example that would be maximum of 120 sq.ft. for 120V systems and 240 sq.ft. for 240V.

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Publications and Manuals


Technical Information

Slab Heating Master Spec (English)


Specifications


Electrical

Amps 13 A
Floor Load 3.1 kW
Ohms 18.46 Ohm
Voltage 240 VAC
Watts 3120 W
Watts Per Sq. Ft. 20 Watts Per Sq. Ft.

Warranty / Certifications

Approvals cCSAus Listed
Warranty 10 Year Warranty

Performance

BTU Per Hour 10646

Product Dimensions

Cold Lead Length 20′
Coverage 156 sqft
Heating Element Thickness 0.25″
Length 52′
Size 3′ x 52′
Weight 31.2 lbs
Width 3′

Installation

Floor Types Installs in concrete

Identifiers

SKU WSHM-240-03052
UPC (GTIN-12) 881308020927

Cabling Specs

Wire Energy efficient twin-conductor

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