4
What you need for installation
Components included in your Warmup PVC kit :
• Warmup PVC Mat
• Installation Manual
Additional components needed as part of your Warmup
heating installation:
• A Warmup® Thermostat with floor sensor.
NOTE: Only Warmup® Thermostats should be used.
• 30mA Residual Current Device (RCD), required as part of
all installations
• Digital Multi-meter required for testing the resistance of
the mat and floor sensor
• Electrical housing, back boxes and junction boxes
(Back box for the thermostat must be at least 35mm
deep)
• Electrical trunking/conduit for housing the power leads
• Duct Tape (to secure the floor sensor and loose wires)
• Scissors for cutting the fibreglass mesh
• Gloves
• Warmup® Insulation Boards
If the Warmup® underfloor heating mat is to be used
as a primary source of heating you will need to ensure
that you have adequate thermal insulation. A heat loss
calculation MUST be carried out to determine whether or
not the heaters will provide enough heat for your room.
Floor Coverings
This installation manual gives instruction for installation of the Warmup underfloor heating mat under ceramic, quarry or natural
stone tiles. The maximum thermal resistance of the floor must not exceed 0.15 [m²K / W].
Other Floor Coverings
It is possible to install the heating element under floor finishes such as wood or vinyl by applying a self levelling compound
over the heating mat .You must ensure that all heating cables are completely covered with a minimum of 10mm self levelling
compound. It is important that the levelling compound is suitable for use with underfloor heating.
Note: Delicate floor finishes such as wood or vinyl have a maximum floor surface temperature of 27°C. This temperature must
NOT be exceeded.
Please contact Warmup for further advice if you wish to install the underfloor heating mat under any floor finishes other than
ceramic, quarry or natural stone tiles.
As with all electrical projects all mains electrical connections must be
undertaken by a certified electrician. All work must conform to current
IEE Wiring Regulations. The Underfloor heating must be controlled via
a floor sensor thermostat at all times.
Installing a Residual Current Device (RCD)
The Heating Mats must be wired via an 30mA RCD. You must install
a dedicated RCD if one is not already present. You may wish to use a
fused spur/RCD. No more than 4.8kW of heating may be connected to
a single 30mA RCD.
NOTE: It is possible to run the heater from an existing circuit. Consult
a certified electrician to determine whether or not the circuit can
handle the load and if it is RCD protected.
Installing Electrical Boxes and Trunking
You will require a deep (35-40mm) back box for the thermostat. If you
are installing more than two heaters, a junction box will be required.
The wiring from the heater to the thermostat should be protected by
conduit or plastic trunking.
Connecting the Thermostat
The thermostat must be connected to the mains electrical supply via
a double pole isolator fused spur or RCD that has a contact separation
in all poles providing full disconnection under over-voltage category
III conditions . The thermostat should be installed within the room to be heated. In most bathroom installations the thermostat
cannot be located within the bathroom itself as the thermostat is IP20 rated and must be located outside of Zone 2. In such
cases the thermostat must be fitted to the outside of an internal wall of the bathroom, as close to the under floor installation as
possible. Once the electrical connections have been made and the system has been tested, the electrician must complete the
control card at the back of this installation manual. As per BS7671:2008 this information must be displayed at or near to the
consumer unit.
Safety - electrical considerations
Power supply via
fused spur /RCD
.
Warmup
Thermostat
Warmup
heating mat
Floor Sensor
Power Lead
(coldtail)
NOTE:
Always run the power
supply cable and floor
sensor cable in
separate conduit /trunking
