PLEASE EXPLAIN
Heated driveway?

Commercial snow melting. (E.g. TOYOTA + ELEKTRA).

HYPOCAUST. Made in GREECE and ROME

ONDOL - The Korean invention

American Legend: Architect Frank Lloyd Wright

From STONE COLD to NICE WARM floors in just 2 hours?

New Kitchen Project. (Part 1)

New Kitchen Project. (Part 2)

Radiant heating in one day?

From cold slab floor to comfort and beauty.

How to connect UCCG-9991 programmable thermostat for radiant floor heating?

How to connect MTC-2991 manual thermostat for radiant floor heating?

How to choose the in-floor radiant heat ELEKTRA mat?

Many components of the Great Real Estate. (Part 1).

Many components of the Great Real Estate. (Part 2).

How to connect more than 1 mat?

The problem on the roof

Installing radiant floor heating in just one afternoon.

Cathedral ceilings effect & Medieval Hypocaustum (floor heating)

STEP-BY-STEP INSTALLATION




Installing the radiant floor heating mat.



Installing radiant floor heating in just one afternoon.


1. The floor area was measured first.

It was approx. 50+ sq. ft.

Electric radiant floor heating should be installed only under 'walkable' floor surface. This surface should be an area not covered by anything solid like shower stalls, vanities, toilets, etc.

Although a 49 sq.ft. mat was available, it was much easier to install somewhat smaller mat like the 44 sq. ft. mat into the 50+ sq.ft. area.

 

 

2. Next, the electrical panel was evaluated for the available space needed to add one 15 Amps GFCI breaker to power the 640Watt mat. 640 Watts @ 120V = 5.4 Amps. This is the job for a qualified person like a licensed electrician.

 

 

3. The location for the thermostat single gang box was chosen and the box was installed.

 

 

 

 

4. Then, the floor sensor was installed.

 

 

5. The mat was next.

 

 

 

 

6. The mesh of the mat (not the heating wire!) is secured to the subfloor with staples. Again, take caution to never, ever drive a staple through the heating wire!

For the slab subfloor, a hot glue gun will be more appropriate as the staples obviously would not work.

Please note the location of the conduit for the thermostat floor temperature sensor.

 

 

 

7. Test the resistance of the mat.

 

 

8. 'Cold' power leads are run up to the thermostat (sometimes called a 'floorstat').

 

 

 

 

 

 

 

9. Two flex conduits were used: one for the power cold leads, the second for the floor temperature sensor. The sensor conduit was installed on the subfloor some 1" away from the heating element of the mat.

 

 

10. When cured the floor will be ready for the tiles.

 

Caution: don't use the floor heating to speed-up mortar cure time!

 

 

 


What is GFCI and why it is needed? 

 


WHEN INSTALLING THE MAT(S):

 

  • DON'T CUT THE HEATING WIRE!
  • ONLY THE FIBERGLASS MESH CAN BE CUT, NEVER THE HEATING COIL!

 

 

MAINTAIN THE DISTANCE BETWEEN HEATING COILS! 

This is NOT OK:

 

1" IS THE ABSOLUTE MININUM. 2"-3" IS BEST.

 


Please remember: Electricity can be deadly and wiring done incorrectly can kill and start deadly and destructive fires even when "just replacing one small receptacle". 

YOU ARE DEALING WITH LINE VOLTAGE, not low voltage! 

NEVER EVER attempt to work or even touch the inside of the electrical components without being 100% sure that the power is disconnected!

If you are not an electrcian and if you have the slightest doubt about your wiring ability, please contact a licensed electrician and/or repairman before doing any diagnosis, repairs or installations. The products shown here are deemed SAFE and sound by various testing authorities but the wiring process can only be SAFE when done with safety precautions. Please read manuals and/or ask pros when not sure. Most of the simple installations shown here can be done by yourself or you can have someone qualified do it for you and THEN have the electrician check it and connect it to power.  


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