Raychem QuickNet Manuel D'installation page 6

3
Floor Heating Design
3.1 Design the Installation
Step 1: Measure the heated area
Determine the heated area of the floor to be heated. The
heated area is the area of the floor where there are no
permanent fixtures or furniture such as showers, toilets,
vanities, or cabinets. Measure the heated area of the floor.
For example, in Figure 4, the area of the bathroom is 96 ft
When you subtract the area of the vanity, shower and toilet,
the total heated area is only 74 ft
8 ft
9 ft 2
minus 22 ft
equals 74 ft
Figure 4: Heated area example
Step 2: Determine the power supply voltage
The available supply voltages include 120 V, 208 V or
240 V.
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2 .
10 ft 2
Heated area = 74 ft
2
3 ft 2
12 ft
96 ft of total area
2
of permanent fixture space
2
of heated area
2
3
Floor Heating Design
Step 3: Plan the design
Determine the optimum floor heating mat layout for your
heated area to ensure coverage. Select a spot for the
thermostat in the wall above the heated area where it can
be reached by the 10-foot cold lead on the QuickNet mat,
and the 10-foot floor temperature sensor.
Note: If the area of the floor is larger than the QuickNet
2
.
mat you chose, lay out the mat in the areas you most want
heated. The areas without a mat will not be heated and will
not be warm.
Note: The predetermined QuickNet spacing must be main-
tained to ensure proper floor heating. Do not change the
mat's uniform heating cable spacing when you lay out the
mat or the floor may have cold spots.
Figure 5: Typical cold lead and floor temperature sensor
example
1 2 0
/
2 4 0
V
~ 5
f t
/ 2 "
1 1
1 1
/ 2 "
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