MAKING MODERN LIVING POSSIBLE
Installation Guide
Indoor Heating Applications
Mats and cables
www.heating.danfoss.com
Installation Guide Indoor Heating Applications & Pipe Tracing
Table of Contents
1 Introduction � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 3
1.1 Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Installation guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3 System overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Installation step by step� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 6
2.1 Calculating C-C distance for heating cables. . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 Planning the installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.3 Preparing the installation area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3 Installing elements � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 7
3.1 Installing heating elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2 Sensor Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4 Indoor applications � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 9
4.1 Floor heating in thin beddings (< 3 cm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
4.2 Floor heating in joist oor constructions . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
4.3 Floor heating with Danfoss Reect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
4.4 Floor heating in concrete oors (> 3 cm) . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
4.5 Frost protection of pipe systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
5 Optional settings � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 17
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Danf oss VIEXD202
Danfoss VIEGC502
Installation Guide Indoor Heating Applications & Pipe Tracing
1 Introduction
In this installation manual, the word “element”
refers to both heating cables and heating mats.
If the words “heating cable” or “heating mat” are
used, the instruction in question applies only to
this type of element.
All dimensioning, product selection, installation
and commissioning of any given application are
the responsibility of an authorized installer.
Any application using heating elements or thermostats purchased by end user must be approved by
an authorized electrician prior to commissioning.
• Including type, size, installation and connection of the heating element.
• Including type, size, connection and settings
of the thermostat controlling the heating
element.
• Children shall not play with the heating
element.
• This heating element can be used by
children aged from 8 years and above and
1�1 Safety Instructions
persons with reduced physical, sensory or
mental capabilities or lack of experience and
knowledge if they have been given supervision or instruction concerning use of the
appliance in a safe way and understand the
hazards involved.
• Cleaning and user maintenance shall not be
made by children without supervision.
The intended use of the heating elements covered
by this installation manual is oor heating, only.
• According to IEC 60335 the mats may not be
installed in a metallic oor or storage heating
application.
• Mats shall be fully embedded in at least 5
mm concrete, screed, tile adhesive or similar.
incl. tiles
Never cut or shorten the heating element
• Cutting the heating element will void the
warranty.
• Cold leads can be shortened to suit requirements.
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Installation Guide Indoor Heating Applications & Pipe Tracing
Elements must always be connected by an authorised electrician using a xed connection�
• De-energize all power circuits before installation and service.
• Each heating element screen must be
earthed in accordance with local electricity
regulations and connected to a residual current device (RCD).
• RCD trip rating is max. 30 mA.
• Heating elements must be connected via a
Elements must always be installed according
to local building regulations and wiring rules
as well as the guidelines in this installation
manual�
• Any other installation may hamper element
functionality or constitute a safety risk, and
will void the warranty.
switch providing all pole disconnection.
• The element must be equipped with a correctly sized fuse or circuit breaker according
to local regulations.
1. Heating cable
2. Thermostat
3. Sensor
4. Screen
5. RCD
6. All-pole switch
7. Fuse
Connections
• Phase - Brown
• Neutral - Blue
• Earth - Screen
The presence of a heating mat must
• be made evident by axing caution signs or
markings at the power connection ttings
and/or frequently along the circuit line
where clearly visible
• be stated in any electrical documentation
following the installation.
Never exceed the maximum heat density
(W/m ) for the actual application�
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Danf oss VIEXD202
Danfoss VIEGC502
Installation Guide Indoor Heating Applications & Pipe Tracing
1�2 Installation guidelines
Prepare the installation site
properly by removing sharp
objects, dirt, etc.
Keep elements clear of insula-
tion material, other heating
sources and expansion joints
The elements and sensors shall
be installed minimum 30 mm
away from conductive parts of
the building, e.g. water pipes.
Regularly measure ohmic resist-
ance and insulation resistance
before and during installation
Elements may not touch or cross
themselves or other elements
and must be evenly distributed
A oor sensor is mandatory and
must be connected to a thermo-
stat limiting the oor tempera-
ture to maximum 35°C.
• Caution! Do not use M1 classied elements
in areas subject to high mechanical loads or
impact, see section 1.3 for classication.
Do not lay heating elements
under walls and xed obstacles.
Min. 6 cm air is required
The elements and especially the
connection must be protected
from stress and strain.
on areas.
The element should be tempera-
ture controlled and not operate
at ambient temperature higher
than 10°C in outdoor applica-
tions.
• Store in a dry, warm place at temperatures
between +5 °C to +30 °C.
1�3 System overview
Standards ECcomfort
(LXmat)
ECbasic
(EFSIC)
ECex
(EFTPC)
ECheat
(EFSM)
ECmat
(EFTM)
ECaqua
(EFTWC)
60800:2009 (cable) - + (M1) + (M2) - - + (M1)
60335-2-96 (mat) + - - + + -
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Danfoss VIEGC502
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Installation Guide Indoor Heating Applications & Pipe Tracing
M1
For use in applications with low risk of mechanical damage, e.g. installed on even surfaces and
M2
For use in applications with high risk of mechanical damage.
embedded in screeds with no sharp objects.
Floor heating in: ECcomfort
(LXmat)
ECbasic
(EFSIC)
ECex
(EFTPC)
ECheat
(EFSM)
ECmat
(EFTM)
Thin Beddings (< 3 cm) + + - + + -
Joist Floor Constructions + - + - - -
Danfoss Reflect (+) - + - - -
Concrete Floors (> 3 cm) (+) + + (+) (+) -
Frost protection of pipes - (+) + - - +
2 Installation step by step
2�1 Calculating C-C distance for heating cables
The C-C distance is the distance in centimetres
from the centre of one cable to the centre of the
next.
For heating of pipes, please refer to the number of
cables per metre, see section 4.5.
C - C [cm] =
or
C - C[cm] =
Max� C-C distance
Thin beddings (<3 cm) 10 cm
Joist oor constructions 20 cm
Danfoss Reflect 20 cm
Concrete oors (>3 cm) 15 cm
Area [m]
Cable length [m]
Cable output [W/m]
Heat density [W/m]
x 100 cm
x 100 cm
ECaqua
(EFTWC)
• Heating cable bending diameter must be at
least 6 times cable diameter.
• The actual cable length may vary +/- 2 %.
230V/400V
C-C [cm] W/m² @ 6 W/m W/m² @ 10 W/m W/m² @ 18 W/m W/m² @ 20 W/m
5 120 200 - -
7,5 80 133 - -
10 60 100 180 200
12,5 48 80 144 160
15 40 67 120 133
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Danf oss VIEXD202
Danfoss VIEGC502