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The heaters consist of a fixed length of heating wire terminated at one end by a sealed joint
and the other end by a 3m power supply cable (cold tail).

The cores and earth braid are spliced in a waterproof joint assembly to the supply conductors
and the earth conductor of the cold tail.

Heater information

Heater Model Wire Colour

kW

Wire Length

Amps Resistive

Resistance

(m)

(@230 volts)

(ohms-cold)

DWS300

BLUE

0.300

22

1.3

176.0

DWS400

SILVER

0.400

34

1.7

136.0

DWS600

GREY

0.600

44

2.6

88.0

DWS800

RED

0.800

64

3.6

64.0

As with all electrical projects which are subject to Part P Building Regulations, all electrical work should be
carried out by a certified/qualified electrician. All work must conform to BS 7671:2008 and the current IEE
Wiring Regulations.

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Summary of Contents for DWS300

Page 1: ...all your undertile heater Incorrect installation could damage the heater and will invalidate your warranty by filling in your Guarantee information online at warmup com by filling in your Guarantee information online at warmup com Installation Manual Undertile Heating Loose Wire System ...

Page 2: ...y of this manual wiring instructions a list of frequently asked questions and more helpful information on our website www warmup co uk Your Warmup Undertile Heater has been designed so that installation is quick and straight forward but as with all electrical systems certain procedures must be strictly followed Please check the sizing guide at the back of this manual to ensure that you have the co...

Page 3: ... DON T commence installation on a concrete floor that has not been fully dried DON T allow traffic over the primed floor or the installed heating wire before tiling DON T cut or shorten the heating wire at any time DON T allow the heating wires to cross over or touch each other at any point DON T store tiles sharp or heavy objects on any of the wiring whilst tiling DON T commence tiling before tes...

Page 4: ...old tail Heater information Heater Model Wire Colour kW Wire Length Amps Resistive Resistance m 230 volts ohms cold DWS300 BLUE 0 300 22 1 3 176 0 DWS400 SILVER 0 400 34 1 7 136 0 DWS600 GREY 0 600 44 2 6 88 0 DWS800 RED 0 800 64 3 6 64 0 As with all electrical projects which are subject to Part P Building Regulations all electrical work should be carried out by a certified qualified electrician A...

Page 5: ...nnecting the Warmup Thermostat The thermostat should be connected to the main electrical supply via a fuse or circuit breaker double pole isolator in accordance with the wiring regulations The thermostat should be installed within the rooms or area to be heated In the case of bathroom installations electrical regulations prohibit the installation of the thermostat within the bathroom itself In suc...

Page 6: ...section 11 2 1990 Copies can be obtained from British Standards Institute 389 Chiswick High Road London W4 4AL Or for a token fee may be viewed at most Public Libraries Ensure the most up to date versions are seen Alternatively you may wish to seek professional advice e g an architect Subfloor Preparation Prior to installation it is important that the subfloor is properly prepared Timber subfloor ...

Page 7: ...facturer s instructions For best results and for ease of installation Warmup recommends the use of an extruded polystyrene building or insulated tile backer board with a cement based facing such as Warmup Insulation Board After attaching the board to the subfloor the Warmup Undertile Heating System may be laid directly on top of the tile backer building board and then tiled over It is important to...

Page 8: ... of the examples the floor space is heated using different wire configurations to suit the particular layout of the room It should be noted that whilst the sizing chart provided in this booklet is a useful guide to heater layout it may be necessary to slightly alter the heating wire spacing to suit your particular installation However at no time should the spacing between the wires be less than 50...

Page 9: ...his point as you may wish to slightly alter the spacings later on Lay the second heater in the remaining area using the same perimeter and heating wire spacings as the first heater Please note that all heaters will start in the same area next to the Warmup Thermostat location When laying more than one heater it is important to keep these points in mind 1 The heating wires may not touch or cross at...

Page 10: ...ete has been allowed to dry before the primer is applied This can take 8 weeks or more If tiling on existing ceramic or quarry floor tiles clean the floor with an appropriate floor cleaning compound Do not then apply the green Warmup primer go to step 2 Using the roller supplied apply the primer evenly to the entire surface to be heated The primer must be allowed to dry for a minimum of 3 hours Th...

Page 11: ...le Using a fibre tipped pen mark a start point as close as possible to the power supply but no further than 2 5m from it Mark all the outer corners of the heated area observing the perimeter distances previously read off the sizing guide and join the corners up to form a marked out perimeter Mark up the spacing intervals for the heating wire following the sizing guide The spacing must be a minimum...

Page 12: ... The wire should be laid in parallel lines back and forth across the main body of the area to be heated Using the wire spacing markings as tape down points secure the heating wire to the floor with strips of adhesive tape supplied The strips should be about 25mm 1 inch long In order to achieve even coverage of the balance of the area to be heated you may at this stage need to adjust some of the wi...

Page 13: ...g a length of tape run your forefinger and thumb along the length of the wire gently squeezing the wire to remove any air space between the wire and the tape Depending on the requirements of the tiler it may be necessary to chisel out or chase short channels in the subfloor to minimise the increased height presented by the power cable the end joint and the floor probe wire Before chiselling the ar...

Page 14: ...eater for approximately 10 minutes to ensure that the element heats up and is warm to the touch In larger installations where more than one heater is fitted repeat the procedure for each heater Do not leave the heater on for more than 30 minutes Completely disconnect the heater prior to and during tiling If possible during tiling use a multi meter set to 200 ohms to check the resistance on the hea...

Page 15: ...e whilst applying the adhesive Use sufficient adhesive to ensure that there are no voids or hollows under the tile If a tile has been positioned incorrectly take great care not to damage the heating wire when lifting Remember that tiles must not be lifted once the adhesive is dry as this will damage the heating wire Do not store or cut tiles on top of the heating wire Do not allow chippings or dus...

Page 16: ...Notes 16 ...

Page 17: ......

Page 18: ...e Installation Manual and that the heater has been installed as specified therein I 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 other Kitchen Bathroom Conservatory Hall Fill in your registration online at www warmup co uk to choos...

Page 19: ...The WARMUP word and associated logos are trade marks Warmup Plc 2007 Regd TM Nos 1257724 4409934 4409926 ...

Page 20: ...45 2288 for assistance NOTE All spacing has been based on square areas for calculation purposes Therefore actual spacing will vary according to the shape of the area to be heated The standard perimeter spacing is 50mm However it may be increased to a maximum of 150mm or decreased to a minimum of 40mm ...

Page 21: ...Heater Location ____________________________ Total Wattage ______________________________ Warmup PLC 702 Tudor Estate Abbey Road London NW10 7UW T 0845 345 2288 F 0845 345 2299 W www warmup co uk ...

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