Warmtech underfloor heating User manual
Installation
Manual
(For undertile heating element)
Please read the ENTIRE Installation Manual before attempting to do the installation. Incorrect installation
could damage the cable and therefore make your warranty invalid
Page
•
Floor Preparation –Step 1
11
•
Mark the floor for element position –
Steps 2 & 3
12
•
Lay out heating element and secure
with fixing tape- Steps 4 & 5
13
•
Cover with screed and test the heating
element –Steps 6 & 7
16
•
Connection and testing of the continuity
alarm –Step 8
17
•
Tiling –Step 9
18
•
Controller connection –Step 10
19
Your Warmtech 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.
Kit contents
Warmtech Undertile Heating element
including element continuity alarm
Adhesive spray
Adhesive tape
Thermal screed
Controller
Manual
Warmtech Heating Systems accepts no liability,
expressed or implied for any loss or consequential
damage suffered as a result of installations which in
any way contravene the instructions that follow.
If these instructions are followed, you should have no problems. However if you do require help at any
stage, please call our Free helpline:
Warmtech helpline: 1300 138 126
You can also find a copy of this manual, wiring instructions, a list of frequently asked questions and
more helpful information on our website: www.warmtech.com.au.
3
4
6
7
8
11
20
22
Contents
2
5
10
9
Do’s & Don’ts
Simple steps to luxurious warmth
Do not damage the heating element.
Sizing Guide
Configuration Notes
Prewiring of Electrical Installation
Technical Notes
Calculate the actual spacing of the
heating element.
Installation Steps 1-10
Tiler Instructions
Product Warranty
Do and don’ts
DO carefully read this installation manual before commencing installation.
DO ensure the floor surface is clean and dry before proceeding.
DO plan the wire layout and stick to recommended wire spacing and perimeters.
DO Space the element evenly over the floor.
DO Plan post-tiling drilling (eg for fixing sanitary ware, door stops) so as not to damage the wiring.
DO maintain a gap between heating wire runs of at least 50mm at all times.
DO make sure that ALL the element wire is positioned under the tiles in the installation.
DO Protect the element with cardboard or hardboard between installation and tiling.
DO use tile adhesives and grouts suitable for use with underfloor heating. (Check with Warmtech)
DO check that the heater is working immediately before commencing tiling.
DO take particular care when tiling not to dislodge or damage the heater element.
DO Ensure that each tile is solidly bedded in the adhesive, with no gaps or voids.
DO If in doubt about the suitability of the sub-floor to be heated, check with your local tile shop,
tiler or call the Warmtech technical helpline.
DON’T cut or attempt to shorten the element wire at any time.
DON’T commence installation on a concrete floor that has not fully cured.
DON’T allow traffic over the installed heater before tiling.
DON’T remove the heating element from the spool other than during installation.
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 testing the Warmtech Heating System using the cable alarm.
DON’T switch on the installed heating system until tile adhesive has fully dried –7 days minimum.
DON’T install the heating wire on stairways or up the walls.
Warning
Once the heating wire has been installed avoid all traffic over the wire until the floor has been covered by
sand and cement. Do not install the heating wire until the floor is ready to be tiled.
Immediately prior to tiling, test the heating wires as specified on page 13 to check it has not been damaged.
If you are in any doubt, call the Warmtech helpline on 1300 138 126.
3
Simple Steps to Luxurious Warmth
4
DO NOT DAMAGE THE HEATING ELEMENT
Please check the sizing guide to ensure that you have the correct heater(s) for the
area you wish to heat.
Your Warmtech Undertile heating element is one continuous resistance wire with
electrical conducting wires connected to each end. It must not be cut, shortened or
lengthened. Once the heater has been installed, avoid all traffic over the heating
element until the floor has been tiled. If the floor is not being tiled immediately, a
sheet of cardboard or hardboard should be laid over the heater as interim protection.
Immediately prior to tiling Test the Heater to check that it is working (specified on
Page 16 ).
IF THE HEATER IS NOT WORKING DO NOT COMMENCE TILING,
CALL WARMTECH : 1300 138 126.
5
Element
Total Ohms
(@ 20°C)
Cable
Length
Coverage in sqm
(at wire centers of
…(mm) ± 10%
60 85 100
Power Density
(watts per sqm)
± 5%
60 85 100
UT200
264 ohms
16.5m
0.90
1.22
1.42
222
163
140
UT300
176 ohms
25.0m
1.29
1.79
2.09
232
167
144
UT400
132 ohms
33.5m
1.76
2.45
2.86
227
163
140
UT500
105 ohms
41.5m
2.18
3.06
3.57
229
164
140
UT650
82 ohms
54.0m
2.91
4.07
4.76
223
159
136
UT800
66 ohms
66.5m
3.60
5.06
5.91
223
159
136
UT1000
52 ohms
83.5m
4.56
6.41
7.50
219
156
133
UT1250
42 ohms
105.0m
5.82
8.18
9.58
216
154
132
UT1500
33 ohms
125.0m
6.96
9.79
11.47
215
153
131
UT2000
25 ohms
166.5m
9.37
13.19
15.46
211
150
128
UT2500
21 ohms
208.5m
11.85
16.69
19.56
214
152
129
UT3000
16 ohms
250.0m
14.31
20.14
23.61
210
149
127
Sizing Guide
For larger or different area sizing –please contact the Warmtech technical helpline on
1300 138 126.
Notes:
These are nominal specifications only.
Coverage table is by calculation only –actual wire layout on the floor may have an
effect on the actual coverage obtained. The table shows the area in sqm that any cable
will cover at various wire centres eg if a UT1000 is laid up with the runs 85mm apart, a
total heated area of 6.41sqm should be achieved.
The power density table shows the watts per sqm of the heated area –the higher the
power density the greater the temperature rise on the tiled surface.
6
Configuration Notes
Whilst the installation instructions only make provision for the heating elements to be
installed in a set configuration, there are many instances where departure from this
configuration may be desirable. Below are a few drawings illustrating such instances:
In each of the above examples, the floor space is heated using different wire configurations to
suit the particular layout of the room. Most layouts will differ with every job.
7
Pre-wiring of Electrical Installation –Wall mounted thermostat
8
Technical Notes
To fully utilize the long-term durability of your tiles, whether heated or not, it is
important that the design and construction of the sub floor is carried out correctly.
The sub floor must be sufficiently rigid to support the ultimate weight that it will have
to bear without movement or deflection. Wherever a timber sub floor is to be heated
and tiled it is strongly recommended that a fibre cement sheet is installed prior to
heating and tiling.
Waterproofing (if required) or movement control joints should be done prior to the
installation.
The installation should comply with the following Codes of Practice:
Electrical Codes of Practice AS/NZS 3000:2000
The choice of products for sub floor preparation and tile fixing will vary depending on
the existing sub floor, preferred tiling system and choice of tile.
If in doubt please consult with your tiler, tile supplier or adhesive supplier.
9
1. Work out the actual sqm to be heated (see grey shaded area) i.e. 3.53sqm.
2. Divide this figure by the length of the wire to be used per the sizing guide
3.53m2÷ 41.5m = 0.085.
3. Multiply this figure by 1000. 0.085 x 1000 = 85mm apart is your wire spacing.
Summary:
3.53m2
41.5m of wire
= 0.085 x 1000 = 85mm apart
Calculate the actual spacing of the heating element on the floor
Helpful Hints:
The element is a continuous wire that must not be shortened or lengthened. Even
spacing of the wire will ensure an even temperature of your tiles.
The adhesive spray ensures that the adhesive tape holds in place. Allow 10
minutes for curing before attempting to adhere tape.
All the elements are marked with a halfway marker for an indication of how your
installation is progressing.
For a successful long installation life, your floor should be clean, dry and stable
(wooden floors) or fully cured (concrete floors).
10
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