Underfloor Heating Cable Installation Manual
Contents
1. least 40mm between wires and walls Heater Layout Product Warranty YOUR STATUTORY RIGHTS WILL REMAIN UNAFFECTED BY THIS WARRANTY This SunStone undertile heater is guaranteed against any manufacturing defect for 10 years starting from date of purchase This warranty covers the cost of replacement or repair of the SunStone undertile heater only subject to the discretion of the manufacturer This is the sole warranty express or implied The manufacturer or its agents cannot be held liable for any resultant damages Send the completed form back to SunStone Warranty BCR House 3 Bredbury Business Park Stockport SK62SN Proof of purchase is needed in the event of a claim so keep your invoice with this warranty This warranty is subject to the following conditions This warranty must be registered The heater must have been installed and used in full accordance with the installation manual The heater must have been earthed and protected by an RCD at all times The heater is used in conjunction with a thermostat or control system approved by SunStone The warranty is returned to SunStone within 30 days of purchase of the heater s If SunStone or its agents carry out diagnostic or remedial work as a result of a claim being made agents shall have the right to levy reasonable c2. Completely cover the heating wires with a smooth layer of flexible adhesive or latex self levelling compound and allow to dry it will normally take 1 day per mm 2 Apply a thin layer 3mm of flexible adhesive and tile as normal To decide on which method consider the following e Itis easier to lay mosaic tiles using the dual step method e If this is your first installation you may find it easier to use the dual step method e If the floor will not be tiled right away the dual step method offers better wire protection e The one step method is usually used by experienced installers of this heating system Check final resistances Perform test 3 for each heater as explained in this manual 7 Positioning the Heater Use the example guides below to work out where the wires are to be placed The wires must only be used in the lengths supplied and must not be cut or joined When laying more than one heater do not allow the heating wires to touch or cross Only join heaters in parallel NOT in series For best efficiency space the wires equally refer to spacing guide below Single Heater in Regular Room Two or More Heaters in Room with Fixtures Use the following calculation to work out the cable spacing Floor Area m x 1000 wire Spacing Length of heater cable Heater Spacing Guide Area m Spacing mm 1 5 2 0 2 5 3 0 3 5 4 0 4 5 5 0 Always allow at least 50mm between wires at all times and at
3. Underfloor Heating Cable Installation Manual Technical Helpline 0845 034 8272 Before You Begin Installation Compatible floor finishes The SunStone heater is intended to warm stone or tile floors The Right Measurements You should have the correct room dimensions size and number of heaters for the job Note that a cut heating cable cannot be returned Heater Length Area Code covered SSW300 25 5m 2 sqm SSW450 38 0m 3 sqm SSW600 51 0m 4 sqm SSW750 63 5m 5 sqm Wattage Amperage 230Vac 230Vac 300W 1 30A 450W 1 96A 600W 2 61A 750W 3 26A The Necessary Tools This box includes a heating cable fixing tape primer and roller Also required THERMOSTAT WITH FLOOR SENSOR RCD as required for all installations Multi meter for testing the resistance of the wires Electrical housing for connection leads junction boxes and 35mm deep back box for the thermostat Permanent marker measuring tape and scissors for the tape Electrics As all electrical work must comply with the current IEE Wiring Regulations we strongly recommend that you do not take on any electrical work unless qualified to do so General Precautions What To Do Plan the heater layout and installation so that any drilling after tiling eg for fixing sanitary ware will not damage the wiring Use flexible ceramic tile adhesives and grouts suitable for use with undertile heating Wait at least 10 days for the tile adhesive to dry
4. able and lay wire out around the perimeter Only lay the wires in parallel lines Note Ensure that all of the heating element including the joints are covered in adhesive and tiled over Do not tape over the joints as this will create air pockets 2 Install Floor Sensor The floor sensor that comes with the thermostat should now be placed centred between two runs of heating elements and secured in place using double sided tape Now check the resist ance of the floor sensor using your multi meter You may need to change the setting on your meter in order to accommodate for the higher readings If you do not get a reading your sensor may be damaged If so call the helpline for a replacement 3 Fit the Power Leads Each heater has a single power lead for connecting the system to the thermostat To keep the power leads at the same height as the heating element a channel can be created in the subfloor Take care not to damage the heating wire Tape the leads in place 4 Install Thermostat Instructions for fitting the thermostat can be found in the thermostat box 5 Check resistances again Perform test 2 for each heater as explained on page 5 When all your heaters are installed and the power leads and floor sensor have been fixed begin laying your tiles using one of two methods One Step Method Apply a thick layer 5 10mm of tile adhesive directly onto the heaters and lay the tiles onto the adhesive layer Dual Step Method 1
5. before switching the system on for the first time Only connect the heating wires in parallel and maintain consistent spacing Test the system before during and after installation What Not To Do x Cut or shorten the heating wire ever Walk over an installed heater as this can cause damage x Store tiles or other sharp or heavy objects on the heaters while tiling x Install the heating up walls or up a set of stairs Install heating wires under units with solid bases or built in furniture x Overlap heaters in case of overheating x Position the floor sensor or power lead on or beneath the heating element About The SunStone Heater Floor Sensor For the thermostat and heating system to work properly installation must be correct Before embedding in adhesive position the sensor at least 150mm into the heated area exactly Wire Composition between two runs of heating element Keep the sensor tip away a E Element Core from drafts sunlight radiators hot i water pipes or other sources of heat Insulation fluctuations Metallic Earth Braid PVC Insulation Heater Layout Floor Sensor Joint __ Evenly Power Lead spaced to thermostat Heating Wire Sticky Tape keeps wire in place The joint which connects the heater wire and power lead must be installed under the tiles It may be necessary to cut a small groove in the subfloor to allow for the extra thickness of the power lead a
6. harges for the work undertaken by them 8 All electrical regulations are complied with and electrical work is undertaken by a qualified and Part P certified electrician NOB WN This warranty does not cover heater failure due to incorrect installation or tiling Please check that the heater is working as laid out in the installation manual prior to tiling Name Address Postcode Telephone Email Installer Electrician Date of purchase Room the heating system is installed Subfloor type Concrete Wood etc I hereby confirm that have read and understand the contents of the Installation Manual and that the heater has been installed as specified therein l acknowledge that no claim can be brought against the manufacturer or its agents for any consequential loss or damage whatsoever I confirm that the heater was working prior to the commencement of tiling Signed Date ke Project in Brief Place this card in a visible spot close to the consumer unit Please Note 1 A 30mA RCD must be used in conjunction with the heating system 2 Never cut or shorten the heating element 3 Ensure all parts of the heating element including joints are installed beneath the tiles 4 For the guarantee to be valid this form must be completed Warning Risk of electric shock Electric wiring and heating panels contained below the floor Do not penetrate with nails screws or similar devices Do
7. nd floor sensor Adapting the heater to room shapes The heater is flexible enough to follow the shapes of units so that the maximum area of coverage is achieved Take care not to damage the wire in any way If you believe you have cut the wire call the helpline immediately REMEMBER If you have any question regarding the installation of your heater please call the helpline on 0845 034 8272 RCD Requirement A dedicated 30mA RCD is compulsory and each thermostat must be protected by a fused spur Combination RCD fused spurs should be used if the electrical circuits are not protected by a RCD It is possible to run the heater s from an existing circuit but check with an electrician if the cir cuit is RCD protected and can handle the load Electrical housing A 35 40mm deep backbox is required for the thermostat and if more than two heaters are being installed a junction box will also be needed The wiring from the heater to the thermostat should be chased into the wall and protected by conduit or plastic trunking Thermostat connection To install follow the instructions in the thermostat box Connect the thermostat to the main elec trical supply via a fuse or circuit breaker according to wiring regulations The thermostat should be installed within the room or area to be heated except where electrical regulations prohibit eg within the bathroom itself In such cases the thermostat should be fitted to the outside of an internal
8. not restrict the thermal 5 Check that the values match the ones in the emission of the heated floor instruction manual 6 Draw a plan showing the layout of the heater Heater Location Resistance Value Attach label with heater description here Before Installation ohms After Installation ohms Signature Date Electrician s Part P registration no Company stamp name SunStene Affordable Underfloor Heating SunStone Underfloor Heating Tel 0845 034 8272 v1 0 05 12
9. rown wire to the neutral blue wire Jot down the readings you get from the multi meter in the blank chart provided below The readings should be within 5 of these measurements resistances in the table below Heater size 390 450 600 750 sqm Results of Your Tests Heater No Heater Proper Reading Reading No 1 Reading No 2 Reading No 3 Preparations SUBFLOORS Follow these techniques for your subfloor type to ensure a rigid base Then on a clean dust and grease free floor paint with the primer Allow to dry for 3 hours the colour should change from light to dark green when dry Do not prime on insulated tile backer board or existing ceramic quarry tiles Wooden Subfloors Allow sufficient underfloor ventilation Pre levelling existing floorboards with a latex cement self levelling compound will give a flush secure fit for the subsequently applied WBP plywood Seal the backs and edges of the plywood according to BS 5385 Part 3 clause 14 4 To achieve a floor stable enough for accepting tiles fit tongue and groove flooring and then over board with ply or tile backer board The above recommendations apply to small floor areas as advised in clause 14 4 of BS 5385 Part 3 2007 Concrete Subfloors Extruded polystyrene tile backer boards with cement based facing yield the best results Follow manufacturer s instructions for fixing Once the board is attached to the subfloor the hea
10. ting system may be laid right on top of the board and then tiled over Use high quality cement based flexible tile adhesive and grout HEATER LAYOUT 1 Show key locations on subfloor with permanent marker Designated spots of units and fixtures Do not install the heater in any of these areas Positions of the power lead cables and the floor sensor _ Points where the wires will need to be turned when laid Please refer to page 8 for possible layouts and wire spacings 2 Mark a start point Mark up a start point as close as possible to the power supply but no further than 2 5m from it 3 Check resistances Perform test 1 for each heater as explained in this manual 4 Dry fit the heater s Lay the wires out according to your plan so you can still make any last minute adjustments in the layout before fixing them Avoid stepping on or kinking the heater to prevent wire fracture Time Allowance After installation you must allow the tile adhesive and any self levelling used to cure naturally before powering up the heating system This takes 10 14 days depending on the amount of materials used Failure to await the correct length of time may result in damage to the system and may also cause the adhesive and grout to dry too quickly hence becoming brittle leading to tiles lifting and or cracking Installations 1 Fit the Heater s Starting at the point where the power supply cable joins the heating wire gently unreel the c
11. wall of the bathroom as near to the heating power supply wires as possible Wiring Overview Fused Spur Thermostat RCD 3 core cable Junction Box Power Leads Floor Probe Heating Cable Heating Cable Checking Resistances Check the resistances of your heater AT LEAST THREE TIMES during the installation process to ensure that it is working This is best done before installation work begins while fixing the heater and just before tiling BEFORE INSTALLING DURING INSTALLATION AFTER INSTALLING To check that no damage has been done during the When each heater has been fixed to the subfloor test again Check the resistance of each heater in case damage had occurred during the freight Note the resistances in the table provided below for damage occurred during installation setting of the tiles test once more after the floor covering has been put down If you are unsure of your readings or think that there is a problem call the helpline right away on 0845 034 8272 How to test with a multi meter We recommend the use of a digital multi meter set to a range of 0 2k ohms for testing the heaters and 20k 200k for testing the floor sensor Please note that due to the high resistance of the wire it may not be possible to get a continuity reading and for this reason continuity testers are not recommended The resistance ohms of each heater should be measured from the live b
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