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Installation Instructions

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Step 1

Draw a layout of your room (see page 6) including all obstacles e.g. Drain covers, 

toilets, sinks etc, then determine the required floor area to be heated. 

Decide a suitable position for the thermostat (start point) then refer to page 6 to 

calculate your cable spacing and layout.

Step 2

The floor should now be prepared ready for the eFlex installation. All loose particles 
should be removed and the floor thoroughly cleaned and treated with any proprietary 
sealants as normally required. 

If your existing floor has a bitumen or asphalt surface it must either be removed or 

covered with a thin flexible self levelling compound, sand cement mix or insulation 
panels. 

When installing insulation panels ensure all joints are properly taped and 
sealed to prevent the eFlex from slipping in-between any panels used.

Step 3

Directly below the electrical connection point install the 10mm flexible tube, the 

flexible tube must be situated in-between two cable runs (see step 6). The floor 
sensing probe is installed into the flexible tube to monitor the floor temperature and 

may need to be replaced if the sensor fails. Ensure the tube is installed to allow easy 

replacement of the sensor probe. 
The flexible tube in the floor should be sealed to prevent tile adhesive or self levelling 
compound entering t

he tube. Secure the flexible tube in position with a section of 

robust utility tape.

Ensure your eFlex is correctly sized before you unpack the product. 
Call 08714 740 818 with any questions.

Step 4

Lay the eFix double-sided adhesive tape across the floor, perpendicular to your 
proposed heating cable layout, ensuring there is tape at either end of the cable 

loops and in between, spaced at a maximum of every 600mm. Then lay the eGauge 

measuring tape in line with the eFix tape.

 

Double-sided adhesive tape

 

eGauge

Summary of Contents for eFlex

Page 1: ...eFlex Installation Manual www electricunderfloorheating co uk Before you begin installing read through these instructions carefully and check that you have all the components required...

Page 2: ...etailed on page 6 Throughout your installation Take some time to plan your cable layout considering all obstacles e g drain covers kitchen units bathroom sinks etc Ensure the floor sensor thermostat i...

Page 3: ...switch greater electrical load than 16A a suitably sized thermostat or electrical contactor MUST BE INSTALLED Please consult our Help Line if in doubt 08714 740 818 We recommend that all eFlex system...

Page 4: ...tween any panels used Step 3 Directly below the electrical connection point install the 10mm flexible tube the flexible tube must be situated in between two cable runs see step 6 The floor sensing pro...

Page 5: ...heating cable onto the double sided adhesive tape using the eGauge for guidance Continuelayingcableuntil totalfloorareaiscovered Allheatingcablemustbe used any excess heating cable must be reconfigure...

Page 6: ...able 600W 3 6 m 167W m 6 Using the calculated watts per m of your room refer to the lookup table below for an indication of the required cable spacing to ensure even cable spacing across the floor and...

Page 7: ...ered timber or vinyl floors a flexible self levelling compound should be used Heating Cable ResistanceTest This test is carried out to prove continuity of the heating element A low resistance ohm mete...

Page 8: ...instructions eFlex not correctly connected with thermostat Refer to thermostat instructions Floor temperature sensor not connected Refer to thermostat instructions Faulty sensor thermostat Contact the...

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