WarmTech Underfloor Heating User Manual
- June 8, 2024
- WarmTech
Table of Contents
**WarmTech Underfloor Heating Istallation
(For single ended inscreed)
Please read the ENTIRE Installation Manual before attempting to do the
installation. Incorrect installation could damage the cable and therefore make
your warranty invalid.
Note:** Licensed Electrician required for connection of thermostat and
provision of power.
Your Warmtech Inscreed 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 Inscreed Heater
- Adhesive spray
- Adhesive tape
- Analogue thermostat
- Continuity alarm
- Floor probe
- 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.
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 heater layout and installation so that any drilling after
tiling (eg for fixing sanitary ware, door stops etc.) will not damage the
wiring.
DO: maintain a gap between heating wire runs of at least 80mm at all
times.
DO: make sure that ALL heating wires, including cold tail joints, are
positioned under the floor tiles in the installation.
DO: use ceramic tile adhesives and grouts suitable for use with
underfloor heating (Check with adhesive manufacturer).
DO: megger heating element after installation (see page 13)
DO: take particular care when applying sand and cement so that the
heating wires are not dislodged or damaged.
DO: ensure that when oil base poly urethane waterproofing is used, the
cable will need to be installed on wire mesh (not supplied).
DON’T: commence installation on a concrete floor that has not been fully
dried.
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 testing the Warmtech Heating System using
the Element tester.
DON’T: switch on the installed heating system until tile adhesive has
fully dried – Check adhesive guidelines.
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.
Heater information
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 water resistant joint assembly to
the supply conductors and the earth conductor of the cold tail. All joints are
water resistant only not waterproof. Joints should not be exposed to long term
moisture.
Heater Model: Wire Colour: kW: Wire Length(m) ± 2.50 %: Amps Resistive @ 240 V: Resistance ± 5.00%
SEW200: Blue: 0.200: 12.5m: 0.833 Amp: 242 Ω
SEW300: Apple green: 0.300: 18.5 m: 1.25 Amp: 161 Ω
SEW400: Burgundy: 0.400: 25.0 m: 1.66 Amp: 121 Ω
SEW500: Violet: 0.500: 31.25 m: 2.08 Amp: 96 Ω
SEW650: Olive green: 0.650: 40.50 m: 2.70 Amp: 74 Ω
SEW800: Red: 0.800: 50.0 m: 3.33 Amp: 60 Ω
SEW1000: Yellow: 1.000: 62.50 m: 4.16 Amp: 48 Ω
SEW1250: Pink: 1.250: 78.10 m: 5.20 Amp: 78 Ω
All electrical work should be carried out by a certified/qualified electrician. All work must conform to AS/NZS 3000:2000 and the current Wiring Regulations.
Pre-wiring of Electrical Installation – Wall mounted thermostat
NOTE: Both conduits need to be terminated 1OO-300mm from the wall.
Technical notes
To fully utilise the long-term durability of ceramic tiling, whether heated or
not, it is important that the design, construction and preparation of the
subfloor is carried out correctly.
It is essential that the subfloor be sufficiently rigid to support the
ultimate weight that it will have to bear without movement or deflection.
The choice of products for subfloor preparation and tile will vary depending
on the existing subfloor, preferred tiling system and choice of tile. This
document is only intended to be an outline guide to laying ceramic floor
tiles. Further help regarding floor preparation and tile application is
available from the tile adhesive manufacturers.
Warmtech recommends the installation of a secondary waterproofing membrane
over the sand and cement screed prior to tiling.
Wiring configurations
Whilst the installation instructions only make provision for the wiring 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 the versatility of the Warmtech Undertile Heating System.
In each 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 80mm. Do not cut the heating element.
Standard room
Bathroom
Room with recesses
Room with central obstacle
Installing multiple inscreed heaters
When laying more than one heater, it is important to keep these points in mind:
- The heating wires may not touch or cross at any point.
- The heaters are joined in parallel only at the thermostat or in a junction box. Do not attach one heater to another in series.
- The heating wire spacing for all heaters in an area should be approximately equal.
Installation Step 1
- If the heater is being fitted to a wooden floor, the floor should be boarded over with ceramic tile underlay as specified in the technical notes section.
- If necessary an appropriate smoothing compound should be applied and allowed to cure.
- If the heater is being fitted to a solid floor it is essential that the concrete has been allowed to dry.
- Avoid traffic over the subfloor when the heating elements are exposed.
Installation Step 2
- Mark the heater position on the floor.
- Calculate in square metres the size of the area to be heated. Then, using the sizing guide given on the back of this manual, read off the wire spacing and perimeter distances to correctly fit your heating wire into the space available.
- 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 heatingwire following the sizing guide.
- The spacing must be a minimum of 80mm and maximum of 100mm.
Installation Step 3
-
Gently pull the power supply cable from the reel.
-
After 3 metres of cable has been removed, you will reach the point at which the power supply cable joins the heating wire.
-
Pull cold tail up the conduit and wire up alarm; turn on and leave on during the entire installation.
-
The joint should be taped to the floor at the start point.
-
Once the floor has been marked up, the heating wire can be laid out.
-
Lay out the heating wire and secure with fixing tape.
-
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 and spray adhesive.
-
The strips should be about 25mm (1 inch) long and band tape 300 – 600mm apart.
-
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 wire spacing that you previously secured.
-
You may wish to alter the wire layout to fit your particular room.
-
Where there are irregularities of room shape you can manually lay out the heating wire eg to provide warmth around the basins, toilets etc.
-
Ensure that no cables are touching.
This is quite acceptable providing that: -
The heating wires are spaced at least 80mm apart at all times.
-
The heating wires never cross.
Once the heating wire layout has been completed, the entire length of the
heating wire should be taped to the floor.
Ensure the greatest possible adhesion with the minimum of trapped air space
beneath the taped wire. As you apply the tape, gently tighten the heating wire
from then ends to ensure it is straight.
Installation Step 4
Install the thermostat and floor probe
- Instructions for the fitting of the thermostat can be found inside the thermostat box or on the back of the thermostat.
- The power cable consists of conductors coloured brown(active), blue(neutral) and green/yellow(earth). These should be connected in accordance with current wiring regulations. For testing purposes, the brown and blue wires should be connected to a multimeter to obtain a resistance reading BEFORE any connections are made to the electrical supply.
- Please review the information on page 5 before proceeding.
- Install the Warmtech thermostat.(If installing a Warmtech floor sensing thermostat, ensure that when placing the probe on the ground, it is no closer than 50mm to any heating element.
- If possible, during tiling use a multimeter to check the resistance on the heater to ensure that there is a circuit.
- A ±5% ohm reading tolerance is allowed under manufacturing guidelines.
- If the heater is not working call the technical helpline on 1300 138 126.
- At this stage DO NOT TILE if the heater is not working.
Installation Step 5
Tile and grout
- Check that the heating wire is fully taped and secure.
- Screed the floor as soon as possible as per the ceramic tile adhesive manufacturer’s instructions. Do not switch on the heater until the tile adhesive has fully dried.
- Apply sand and cement screed at a ratio of 3 parts sand and 1 part cement.
- Ensure the bed thickness is a minimum of 20mm and a maximum of 65mm.
SIZING GUIDE
Inscreed Element: Wattage: Cable Length: Coverage area table
SEW200: 200: 12.5m: 1.0m2 – 1.5m2
SEW300: 300: 18.5m: 1.5m2 – 2.0m2
SEW400: 400: 25.0m: 2.0m2 – 2.5m2
SEW500: 500: 31.25m: 2.6m2 – 3.0m2
SEW650: 650: 40.50m: 3.1m2 – 4.0m2
SEW800: 800: 50.0m: 4.1m2 – 5.0m2
SEW1000: 1000: 62.50m: 5.1m2 – 6.0m2
SEW1250: 1250: 78.10m: 6.1m2 – 8.0m2
For larger or different area sizing – please contact Warmtech on Freephone 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 e.g. if an SEW1000 is laid up with the runs 80mm
apart, a total heated area of 4.50sqm should be achieved. Formula
Coverage area (m2) divided by cable length x 1000 = wire spacing
PRODUCT WARRANTY
INSCREED HEATING ELEMENTS
We warrant you that the new Warmtech heating equipment with this warranty is
free from any manufacturing defects.
This warranty applies to Warmtech Inscreed Heating elements for a period of
two (2) years from the date of purchase.
Warmtech reserves the right to repair or offer a full refund (money back) to
the value of the heating kit only, in the event of malfunctioning of the
heating within the two (2) year warranty period as a result of a manufacturing
defect. Moisture in element joints will not be covered under warranty.
Warmtech or its Distributors reserve the right to charge for any
repairs/faults tracing caused by installation damage which is not the fault of
Warmtech Underfloor Heating.
All procedures as detailed in the installation manual need to be followed for
this warranty to be valid. Any deviation from these may result in the warranty
being null and void.
Attach your proof of purchase and keep in a safe place with this warranty
form.
WarmTech Underfloor Heating User Manual – Optimized PDF
WarmTech Underfloor Heating User Manual – Original PDF