King Electrical Floor Heating Cable Installation Manual
11
3.4
Determine the direction of the cable runs. It is recommended that the cable run parallel to the wall that the
thermostat is mounted. Center straps are required when the distance between end straps is more than
48 inches. Center straps should be 3 to 4 feet apart.
3.5
On average, a 5 to 10% deduction in heated area will create a 2-4” border. To determine the exact distance
to mount the strapping from the wall, take the actual room square footage less the selected cable kit less to
determine the unheated border. Then take the unheated border and divide it by the perimeter. Now multiply by
12 for the number of inches to mount the cable straps away from the wall.
(continued)
STEP 3: Thermostat location and strapping layout
A. 10ft x 10ft room = 100 ft
B. 4ft x 10ft = 40 ft perimeter
C. Cable kit selected 90 ft
D. 100ft - 90 ft = 10ft unheated border
E. 10ft / 40ft = .25ft
F. .25ft x 12in/ft = 3” from the wall
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Materials required
3.6
It is difficult to predict exactly where the heating cable will end, thus it is important to have a buffer zone.
A buffer zone is an area where heating in not essential and if unheated will go unnoticed. This area is also
used for any excess cable where a higher heated density will also be un-noticed.
1. King floor heating cable
2. King floor strapping (sold separately)
3. King GFCI thermostat
4. King temperature sensor (included with thermostat)
5. King instant alert monitor, model FCS11
6. Electrical box and cable clamps
7. Wood chisel or router
8. Multimeter or megometer
9. Electrical wire connectors and cable fasteners
10. Nail plate (included with cable kit)
11. Duct tape
12. Stapler
12. Protective glasses
13. Tape measure
14. Broom
15. Felt tip marker
16. Electrician tools
17. Electric drill
18. Plastic trowel
19. Hammer
20. Hot glue gun
For installation on concrete slab add:
21. Double backed tape
