Instructions / Assembly
Making Electrical Provision for the Heater
9
Important Carpet Information
Compatible Carpets
Always ensure that the carpet and underlay are suitable for use with electric radiant heating.
Take extra care when working with sharp tools to avoid damage to the foil mat, which could cause
the mat to fail.
Ensure all cables have been channeled correctly into the underlay to avoid an uneven carpet surface.
Do not install nails, screws or staples in direct contact with the Foil mat and power supply cable.
When making a join (or “seam”) in the carpet, ensure that the seaming iron DOES NOT come into
direct contact with the foil heating mat as this may cause damage to the heating system. Wherever
possible, avoid joins in the carpet over mats. Always use a good quality heat-bond tape, and use an
ultra-wide tape when joining heavy wool or similar carpets.
RISK OF CARPET DISCOLORATION:
The foil heater is powered at 12 watt/ sq.feet so will not cause carpet discoloration when installed
in accordance with this instruction manual.
However, if excessive insulation is placed for long periods of time over a heated carpet area, some
carpets of lighter colors, and lower quality may be subject to discoloration.
The major factors affecting discoloration of a carpet are-
1)the nature of the fibers
2)the type of coloring process and its application to fibers, yarns, or fabric,
3)the color range from pastels to dark colors,
4)the temperature level if the heat is trapped under a high level of insulation such as a futon
mattress, bean seat or a dog bed,
5)the length of time the carpet is exposed to higher temperature.
Most modern tufted and woven carpets are compatible with the Warmup Foil mat. Polypropylene,
hessian or jute secondary backings are compatible, but rubber- or foam-backed carpets are not
compatible as they trap too much heat.
The carpet must be at least 1/4” thick, but not more than 1” thick and the R-value of the carpet
should not be greater than 1.
Compatible Carpet Underlay/Cushion:
Any type of carpet padding can be used as long as it has a density of 6 pounds per cubic foot
or more. Most good quality rebounded polyurethane (rebound) and prime polyurethane are 8
pounds per cubic foot or more.