5
(*) Remark: It is common to find insulation materials that are at least 6mm (1/4 inch) in
thickness and have Thermal Conductivity of 0.02-0.06 W/m*
°
C (0.035-0.1 Btu/h*ft*
°
F), but
you can use other thickness and Thermal conductivity as long as the R Value of the material
is in the range of 0.1 - 0.3 m
2
*
°
C/W or 1 - 3 Tog (0.57 - 1.7 ft
2
*h*
°
F/Btu).
£
Hard insulation materials
– used as heat insulator under the heating mats in stone
type floors for efficient heating. The material comes in plates, usually made from
foamed Polyurethane or Polystyrene and should have Compressive strength of more
than 2 Kg/cm
2
(28 PSI). The R value of the material should be in the range of 0.1
- 0.3 m
2
*
°
C/W or 1 - 3 Tog (0.57 - 1.7 ft
2
*h*
°
F/Btu). (See page 14 for a list of
recommended hard insulation materials.) (*) See also remark below.
£
Soft insulation material
– used as heat insulator under the heating mats in all non-
stone type floors for efficient heating. The material comes in rolls and should have
Compressive strength of more than 0.02 Kg/cm (0.28 PSI)
2
. The R value of the
material should be in the range of 0.1 - 0.3 m
2
*
°
C/W or 1 -3 Tog (0.57 - 1.7
ft
2
*h*
°
F/Btu). (See page 14 for a list of recommended soft insulation materials.) (*)
See also remark below.
Before installing, draw an installation plan showing
the placement of the mats, floor sensor, and junction
box or boxes.
The
AHT
heating mats should cover at least
65%-80% of the floor area of your room to be used
as a primary heat source; the more coverage, the
less time needed to heat the area. The heating mats
are available in several convenient sizes. Choose
the combination of heating mats that best enables
you to cover the recommended 65% - 80% of your
room.
Plan to use the larger heating mats as much as
possible and to use smaller mats only as gap fillers.
Planning Your Installation
Note:
The mats are supplied with 5 meters (16 feet)
of electrical cold leads. If this is not enough,
ask your electrician to extend the cold leads.
Step 1:
Important Note:
When installing insulation material under carpeting, always make
sure that the R- value of the insulation is at least the same or greater
than the R-value of the carpet.
