FAQs

Floor Heating

Can QuickNet be repaired if damaged?
Yes, QuickNet can be repaired using our mat repair kit. If you suspect that your mat needs to be repaired, please contact our Customer Care department at 0800 969013. Your entire floor will not need to be ripped up to repair the break (this is a common misperception of electric floor heating systems).  

Can QuickNet go under solid hardwood or laminate wood?
QuickNet is only permitted to be installed under tile or stone. 

Does the mat radiate heat off the edge of the mat?
No, you will only feel heat directly over where QuickNet is installed. 

Where do the leads come out?
On our standard mats, the 10' leads come out of the corner of the mat. There is no upside or downside on our Standard Mats so the mats can be flipped around so that the leads are closer to the thermostat location. On our custom mats, we require the homeowner/contractor to specify the location of the thermostat on their room drawings. When the custom mat is manufactured, the 10' leads come out at the thermostat location indicated on the room drawing. 

How many mats can I connect to one thermostat?
The amperage limit of a single RAYCHEM thermostat is 13 amps so 18m2 QuickNet 160w/m2 and 33m2 of QuickNet 90w/m2.

Can cable be shortened?
No, the cable must not be separated, shortened or extended. Only the mains lead can be cut.

When should I choose QuickNet-90 and when QuickNet-160?
If you have a poorly insulated floor, if you want a fast heat-up of the floor or a higher temperature, choose QuickNet-160. If you want to install straight onto a timber subfloor choose QuickNet 90w/m2.

Can I use QuickNet under a laminate or linoleum floor?
We strongly advise to use T2Red (self-regulating) cable under temperature sensitive floors.  Under certain conditions, it is possible to install QuickNet under these floors, but please contact us to get more information on these installation methods.

What if the kit doesn’t fit my space?
If you have too much cable left over:

  • Double-check that you have purchased the right kit based on the square footage of the area. If the wrong kit was purchased, contact the distributor to see if a return is possible.
  • Install the cable in the buffer zone; a buffer zone is an area where excess cable can be installed. Examples of buffer zones include the area behind the toilet or a closet space.
  • Install the cable tighter to the perimeter of the heated area to use up extra cable (reduce the unheated border).

If you don't have enough cable:
  • Double-check that you have purchased the right kit based on the surface of the area. If the wrong kit was purchased, contact the distributor to see if a return is possible.
  • Remove the heating cable from areas of the floor where heating is not essential. Examples of such areas are areas behind the door and areas directly in front of the bathtub.
  • Install the cable further in from the perimeter of the area (increase the unheated border).


Can two or more cable kits be installed together?
The amperage limit of a single RAYCHEM thermostat is 13 amps. You may use as many kits as needed provided the combined amperage does not exceed 13 amps. For large spaces such as basements, we suggest you "zoning" your space and using a second thermostat. Multiple cable kits must be wired in "parallel" to the thermostat.

Alternatively you can use a contractor to connect multiple cables in the same zone. See wiring diagram included in the nVent RAYCHEM thermostat installation manuals.

Which is the neutral wire?
The blue wire with the colored tip is the neutral wire.

How do I install ​T2Blue Cable in a shower environment?
Refer to our Shower Installation Instructions.

Can T2Blue Cable be installed in wet environments such as shower beds and saunas?

Yes, T2Blue is permitted for this type of installation.

Can I cut the T2Blue Cable?
No, cutting the nVent R​AYCHEM will cause the cable to fail and will also void the warranty. If too much cable is left, you need to install it in a buffer zone or re-install the cable closer to the perimeter of the heated area.

What if the kit doesn’t fit my space?
If you have too much cable left over:

  • Double-check that you have purchased the right kit based on the square footage of the area. If the wrong kit was purchased, contact the distributor to see if a return is possible.
  • Install the cable in the buffer zone; a buffer zone is an area where excess cable can be installed. Examples of buffer zones include the area behind the toilet or a closet space.
  • Install the cable tighter to the perimeter of the heated area to use up extra cable (reduce the unheated border).

If you don't have enough cable:
  • Double-check that you have purchased the right kit based on the surface of the area. If the wrong kit was purchased, contact the distributor to see if a return is possible.
  • Remove the heating cable from areas of the floor where heating is not essential. Examples of such areas are areas behind the door and areas directly in front of the bathtub.
  • Install the cable further in from the perimeter of the area (increase the unheated border).


Can two or more cable kits be installed together?
The amperage limit of a single RAYCHEM thermostat is 13 amps. You may use as many kits as needed provided the combined amperage does not exceed 13 amps. For large spaces such as basements, we suggest you "zoning" your space and using a second thermostat. Multiple cable kits must be wired in "parallel" to the thermostat.

Alternatively you can use a contractor to connect multiple cables in the same zone. See wiring diagram included in the nVent RAYCHEM thermostat installation manuals.

Which is the neutral wire?
The blue wire with the colored tip is the neutral wire.

How do I install T2Green Cable in a shower environment?
Refer to our Shower Installation Instructions.

Can T2​Green Cable be installed in wet environments such as shower beds and saunas?

Yes, T2Green Cable is permitted for this type of installation.

Can I cut the T2Green Cable?
No, cutting the nVent RAYCHEM will cause the cable to fail and will also void the warranty. If too much cable is left, you need to install it in a buffer zone or re-install the cable closer to the perimeter of the heated area.

What if the kit doesn’t fit my space?
If you have too much cable left over:

  • Double-check that you have purchased the right kit based on the square footage of the area. If the wrong kit was purchased, contact the distributor to see if a return is possible.
  • Install the cable in the buffer zone; a buffer zone is an area where excess cable can be installed. Examples of buffer zones include the area behind the toilet or a closet space.
  • Install the cable tighter to the perimeter of the heated area to use up extra cable (reduce the unheated border).

If you don't have enough cable:
  • Double-check that you have purchased the right kit based on the surface of the area. If the wrong kit was purchased, contact the distributor to see if a return is possible.
  • Remove the heating cable from areas of the floor where heating is not essential. Examples of such areas are areas behind the door and areas directly in front of the bathtub.
  • Install the cable further in from the perimeter of the area (increase the unheated border).


Can two or more cable kits be installed together?
The amperage limit of a single RAYCHEM thermostat is 13 amps. You may use as many kits as needed provided the combined amperage does not exceed 13 amps. For large spaces such as basements, we suggest you "zoning" your space and using a second thermostat. Multiple cable kits must be wired in "parallel" to the thermostat.

Alternatively you can use a contractor to connect multiple cables in the same zone. See wiring diagram included in the nVent RAYCHEM thermostat installation manuals.

Which is the neutral wire?
The blue wire with the colored tip is the neutral wire.

How do I install CeraPro Cable in a shower environment?
Refer to our Shower Installation Instructions.

Can CeraPro Cable be installed in wet environments such as shower beds and saunas?

Yes, CeraPro cable is permitted for this type of installation.

Can I cut the CeraPro Cable?
No, cutting the nVent RAYCHEM Cable will cause the cable to fail and will also void the warranty. If too much cable is left, you need to install it in a buffer zone or re-install the cable closer to the perimeter of the heated area.

What if the kit doesn’t fit my space?
If you have too much cable left over:

  • T2Red is a self-regulating cable and can be cut on site. You will need to make a new end seal like explained in the installation manual. An end seal kit is included in the T2Red packs, so You have all the needed material to perform a new end seal or a cold lead connection.

If you don't have enough cable:
  • Double-check that you have purchased the right kit based on the square footage of the area. If the wrong kit was purchased, contact the distributor to purchase more cabling. You can run 2 circuits into 1 controller, as long as it does not exceed the maximum 13 Amp switching capacity.
  • Remove the heating cable from areas of the floor where heating is not essential. Examples of such areas are areas behind the door and areas directly in front of the bathtub.
  • Install the cable further in from the perimeter of the area (increase the unheated border).


Can two or more cable kits be installed together?
The amperage limit for T2Red is limited to 10 Amps nominal power in order to cope with the in rush current of the self-regulating cables. Alternatively you can use a contractor to connect multiple cables in the same zone. See wiring diagram included in the nVent RAYCHEM thermostat installation manuals.

Which is the neutral wire?
For the T2Red, there is no difference between the live and the neutral wire. Both wires are black and you can attach the live and or the neutral wire to either of the 2 wires.

How do I install T2Red Cable in a shower environment?
Refer to our Shower Installation Instructions.

Can T2Red Cable be installed in wet environments such as shower beds and saunas?

Yes, T2Red cable is permitted for this type of installation.

Can I cut the T2Red Cable?
Yes you can cut the T2Red cable as it is a self-regulating cable and they can be cut to length on site. You will need to make a new end seal like explained in the installation manual. An end seal kit is included in the T2Red packs, so you have all the needed material to perform a new end seal or a cold lead connection.

Can natural stones be put on Reflecta plates?
For the fixation of tiles or stones on Reflecta plates, the Reflecta A-Fix Adhesive or P-Fix Primer with a flexible adhesive should be used.  However, some natural stones, like marble, are color sensitive and should not be used to avoid spots of color changes in a finished floor. Advise on color sensitivity of natural stones can be obtained in a tile shop.

Note that in order for the tile adhesive to adhere to the aluminum plates, you will need to apply a layer of primer called nVent RAYCHEM P-FIX (1244-020608 - R-RF-ADH-P-FIX-3) to the Reflecta plates.

Can any adhesive be used?
In order to ensure good adhesion of the tiles to the Reflecta plates we advise to use the nVent Raychem A-Fix (1244-001372 - R-RF-ADH-A-FIX). Alternatively the 1244-017283 - SIND-15-0705/PLASTIKOL-F1-843F can be used. If another type of adhesive is used, it is recommended to try the adhesion power on a small surface and it is always recommended to apply a layer of primer called nVent RAYCHEM P-FIX (1244-020608 - R-RF-ADH-P-FIX-3) before applying the tile adhesive.

Ambient or floor sensor?
It is always most advised to use a floor sensor to control underfloor heating. Alternatively an ambient control with a floor limiter can be used, and if not possible to install a floor sensor, as the T2Red is a self-regulating cable, an ambient sensor only is also acceptable.

What is the maximum area that can be controlled by one thermostat?
If the T2Red cable is attached directly to the thermostat, the maximum length of the cable will be 100m (this is the maximum length of 1 circuit and is approximatively equal to 10 Amps of T2Red). If multiple circuits need to be installed or if the total is exceeding 10Amps nominal power, then you can use a contactor to connect multiple circuits in the same zone. See wiring diagram included in the nVent Raychem thermostat installation manuals.

Where is the sensor to be placed?
The sensor should be installed in the center between 2 cable runs in a plastic tube (delivered with the T2Red kits or available as a standard accessory 6012-8949541 – U-ACC-PP-02-SENSORTUBE). You can cut a piece of the Styrofoam at the bottom of the Reflecta plate to position the sensor tube. This way the Tube and the metal endplug (delivered in the same accessory kit) stay in contact with the aluminum of the Reflecta plate.

Must flexible adhesive/gap mortar always be used? What is the setting time?
Reflecta adhesive needs approximately 4 hours to set and can then be worked on again.  Comment: the adhesive may not be used as a mortar for a thin bedding. It is an adhesive.