MAKING MODERN LIVING POSSIBLE
Installation Guide
ECflex Heating Applications
EFSIC EFTPC
www.EH.danfoss.com
Danfoss A/S is not liable or bound by warranty if these
instructions are not adhered to during installation or service.
The English language is used for the original instructions.
Other languages are a translation of the original instructions.
(Directive 2006/42/EC)
© 2012 Copyright Danfoss A/S
Installation Guide ECflex Heating Applications
Table of Contents
1 Introduction ............................................. 3
1.1 Safety Instructions ...................................... 5
1.2 Installation Guidelines .................................... 7
1.3 System Overview ....................................... 8
1.4 Functional Overview ..................................... 8
2 Installation Step by Step ...................................... 9
2.1 Fastening Methods ...................................... 9
2.2 Calculating C-C Distance ................................... 10
2.3 Planning the Installation ................................... 11
2.4 Preparing the Installation Area ............................... 11
3 Installing Elements ......................................... 11
3.1 Installing Heating Elements ................................. 12
4 Indoor Applications ........................................ 13
4.1 Floor Heating in Thin Beddings ............................... 14
4.2 Floor Heating in Joist Floor Constructions ......................... 15
4.3 Floor Heating with EFCI DRY ................................ 16
4.4 Floor Heating in Concrete Floors .............................. 17
5 Outdoor Applications ....................................... 19
5.1 Snow Melting on Ground Areas ............................... 20
5.2 Frost Protection of Pipes ................................... 21
6 Finalizing the Installation ..................................... 23
7 Optional Settings .......................................... 24
7.1 Floor Temperature Settings ................................. 24
1 Introduction
In this installation manual, the word “element” refers
to heating cables.
For other applications please contact your local sales
office.
The intended uses of the heating elements covered
by this installation manual are shown in the following.
Danfoss Heating Solutions VIAMJ202
3
Installation Guide ECflex Heating Applications
Floor heating in thin beddings (<3 cm)
- see section 4.1.
Floor heating with EFCI DRY
- see section 4.3.
Floor heating in joist floor constructions
- see section 4.2.
Floor Heating in Concrete Floors (>3 cm)
- see section 4.4.
Snow and ice melting on ground areas
- see section 5.1.
4
Frost protection of pipe systems
- see section 5.2.
VIAMJ202 Danfoss Heating Solutions
Installation Guide ECflex Heating Applications
1.1 Safety Instructions
Elements must always be connected by an authorised electrician using a fixed connection.
De-energize all power circuits before installation
▪
and service.
The connection to the power source must not
▪
be directly accessible to the end user.
Each heating cable screen must be earthed in
▪
accordance with local electricity regulations and
connected to a residual current device (RCD).
Recommended RCD trip rating is 30 mA, but
▪
Never cut or shorten the heating element
Cutting the heating element will void the war-
▪
ranty.
Cold leads can be cut or shortened to suit re-
▪
quirements, only.
may be up to 300 mA where capacitive leakage
may lead to nuisance tripping.
Heating elements must be connected via a
▪
switch providing all pole disconnection.
The element must be equipped with a correctly
▪
sized fuse or circuit breaker, e.g. 10/13 A for a
1.5 mm2 cold lead and 16/20 A for a 2.5 mm
cold lead.
2
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.
Make sure that elements, cold leads, connection
▪
boxes, and other electrical components do not
come into contact with chemicals or flammable
materials during or after installation.
Danfoss Heating Solutions VIAMJ202
5
Installation Guide ECflex Heating Applications
The presence of a heating element must
be made evident by affixing caution signs or
▪
markings at the power connection fittings
and/or frequently along the circuit line where
clearly visible.
be stated in any electrical documentation fol-
▪
lowing installation.
Never exceed the maximum heat density (W/m2)
for the actual application.
1. Heating cable
2. Thermostat
3. Sensor
4. Screen
5. RCD
6. All-pole
switch
7. Fuse
Connections
Phase - Black
▪
Neutral - Blue
▪
Earth - Screen
▪
6
VIAMJ202 Danfoss Heating Solutions
Installation Guide ECflex Heating Applications
1.2 Installation Guidelines
Caution! Do not use M1 classified elements in
▪
areas subject to high mechanical loads or impact. See section 1.3 for classification.
The product does not contain harmful substan-
▪
ces.
Prepare the installation
site properly by removing sharp objects, dirt,
etc.
Elements may not touch
or cross themselves or
other elements and must
be evenly distributed on
Regularly measure ohmic
resistance and insulation
resistance before and
during installation.
The elements and especially the connection
must be protected from
stress and strain.
areas.
Store in a dry, warm place at temperatures be-
▪
tween +5 °C to +30 °C.
Do not lay heating elements under walls and
fixed obstacles. Min. 6 cm
air is required.
The element should be
temperature controlled
and not operate at ambient temperature higher
than 10°C in outdoor ap-
Keep elements clear of insulation material, other
heating sources and expansion joints.
A floor sensor is recommended in all floor heating applications and
mandatory under wooden floors.
plications.
Danfoss Heating Solutions VIAMJ202
7
Installation Guide ECflex Heating Applications
1.3 System Overview
ECflex EFSIC EFTPC
Mechanical Class (IEC 60800) M2 C (IEC60800: 1992)
Floor heating in thin beddings (<3 cm) D D
Floor heating in joist floor constructions - P
Floor heating with EFCI DRY - P
Floor heating in concrete floors (>3 cm) D P
Snow and ice melting on ground areas D A
Frost protection of pipe systems A P
M2, C For use in applications with higher risk of
mechanical damage.
P Primary recommendation for this applica-
tion.
1.4 Functional Overview
D Designed and approved for this application.
A Applicable but there are better options.
- Not applicable! Do not use!
1. Element
2. C-C distance
3. Cold lead connection
4. Cold lead
5. Connection box (if any)
6. Sensor
7. Thermostat
8
VIAMJ202 Danfoss Heating Solutions
Installation Guide ECflex Heating Applications
2 Installation Step by Step
2.1 Fastening Methods
Danfoss TWISTCLIP
For use on reinforcement mesh.
EFCI Fast
For keeping exact C-C distance (2.5 cm steps) on even
surfaces.
Cable ties
For use on reinforcement mesh. Do NOT fix the loop.
The cable must be able to move.
Danfoss CLIP CC
For keeping exact C-C distance (1 cm steps) on even
surfaces, UV resistant.
Tape or hotmelt glue
For fixing elements to hard, dry, even surfaces.
Danfoss Aluminium Tape
For ensuring efficient heat transfer.
Danfoss Heating Solutions VIAMJ202
9
Installation Guide ECflex Heating Applications
2.2 Calculating C-C Distance
For areas on roofs, grounds and fields, the C-C distance is the distance in centimetres from the centre of
one cable to the centre of the next.
C - C[cm] =
Area [m2]
Cable length [m]
For heating of pipes, refer to the number of cables
per metre - see section 5.2.
or
C - C[cm] = Cable output [W/m] x 100 cm
Heat density [W/m2]
Max. C-C distance
Thin beddings (<3 cm) 10 cm
Joist floor constructions 20 cm
DEVIcellTM Dry
Concrete floors (>3 cm) 15 cm
Ground areas 15 cm
W/m² @ 220V/380V
C-C [cm] 6 W/m 10 W/m 15 W/m 17 W/m 18 W/m 20 W/m
5 110 183 274 311 - -
7,5 73 122 183 207 220 244
10 55 91 137 156 165 183
12,5 44 73 110 124 132 146
15 37 61 91 104 110 122
W/m² @ 230V/400V
C-C [cm] 6 W/m 10 W/m 15 W/m 17 W/m 18 W/m 20 W/m
5 120 200 300 340 - -
7,5 80 133 200 227 240 267
10 60 100 150 170 180 200
12,5 48 80 120 136 144 160
15 40 67 100 113 120 133
x 100 cm
20 cm
W/m² @ 240V/415V
C-C [cm] 6 W/m 10 W/m 15 W/m 17 W/m 18 W/m 20 W/m
5 131 218 327 370 - -
7,5 87 145 218 247 261 290
10 65 109 163 185 196 218
12,5 52 87 131 148 157 174
15 44 73 109 123 131 145
10
VIAMJ202 Danfoss Heating Solutions
Installation Guide ECflex Heating Applications
2.3 Planning the Installation
Draw a sketch of the installation which shows
element layout
▪
cold leads and connections
▪
junction box/cable well (if applicable)
▪
sensor
▪
connection box
▪
thermostat
▪
Save the sketch
Knowing the exact location of these compo-
▪
nents makes subsequent troubleshooting and
repair of faulty elements easier.
2.4 Preparing the Installation Area
Bear in mind the following:
Observe all guidelines in section 1.1 .
▪
Observe correct C-C distance (heating cables
▪
only) - see section 2.2.
Observe required installation depth and possi-
▪
ble mechanical protection of cold leads.
When installing more than one element, never
▪
wire elements in series but route all cold leads
in parallel to the connection box.
Two or more elements may be installed in
▪
the same room but a single element is not
to be installed across two or more rooms.
All heating elements in the same room
▪
must have the same heat density (W/m2)
unless they are connected to separate
floor sensors and thermostats.
For single conductor cables, both cold leads
▪
must be connected to the connection box.
Remove all traces of old installations, if applica-
▪
ble.
Ensure that the installation surface is even, sta-
▪
ble, smooth, dry and clean.
If necessary, fill out gaps around pipes,
▪
drains, or walls or apply foil covering
There must be no sharp edges, leaves, dirt or
▪
foreign objects.
3 Installing Elements
It is not recommended to install elements at temperatures below -5 °C.
At low temperatures, heating cables can become rigid. After rolling out the element, briefly connect it to
the mains supply to soften the cable before fastening.
Danfoss Heating Solutions VIAMJ202
Measuring Resistance
Measure, verify and record element resistance during
installation.
After unpacking
▪
After fastening the elements
▪
After the installation in finalized
▪
11
Installation Guide
If ohmic resistance and insulation resistance are not
as labelled, the element must be replaced.
The ohmic resistance must be within -5 to +10
▪
% of the value labelled.
The insulation resistance should read >20 MΩ at
▪
min. 500 V, preferably 2.5 kV.
3.1 Installing Heating Elements
ECflex Heating Applications
Observe all instructions and guidelines in section 1.1
and 1.2.
Heating Cables
Position the heating element so that is at least
▪
half the C-C distance from obstacles.
Elements must always be in good contact with
▪
the heat distributor (roof, sand, soil, concrete,
pipe, etc.) - see section 4 and 5 for details.
Observe correct C-C distance - see section 2.2.
▪
Position the heating cable so that it is at least
▪
half the C-C distance from obstacles.
Heating cable bending diameter must be at
▪
least 6 times cable diameter.
Heating cables have meter markings to aid you
▪
during installation
The actual cable length may vary +/- 2 %.
▪
Extending cold leads
Avoid extending cold leads if possible. Wire cold
▪
leads to e.g. junction boxes or cable wells.
Max. 5 % loss of potential power in the whole
▪
length of the cold cable.
Extra length of cold lead will increase capacitive
▪
leakage current which means that RCD trip rating may need to be higher.
Sensors
Sensors are live (230 V) components and must
▪
be wired inside plastic conduit
Sensors can be extended using installation ca-
▪
ble.
See section 4 for specific applications.
▪
Floor sensors (indoor applications only)
Mandatory under wooden floors or in wooden
▪
sub floors.
Shall be placed in an appropriate place.
▪
Where not exposed to sunlight or draft
▪
from door openings
In between >2 cm from two heating ca-
▪
bles
The conduit should be flush with the floor
▪
surface.
It may be necessary to countersink
▪
the conduit to achieve this.
Route the conduit to the connection box.
▪
12
VIAMJ202 Danfoss Heating Solutions
Installation Guide ECflex Heating Applications
4 Indoor Applications
Sub floor Thin beddings* (<3
cm)
Wood
Concrete
Joist floor construc-
tions
Max. 10 W/m and 100 W/m
Max. 20 W/m and 225 W/m
EFCI DRY Concrete floors (>3
2
2
Floor type
Wood, par-
Max. 100 W/m
2
Max. 80 W/m
2
Max. 100 W/m
2
Max. 150 W/m
quet, laminate
Carpet, vinyl,
Max. 100 W/m
2
- -
Max. 150 W/m
linoleum, etc.
Tiled floors in
bath-
▪
100 - 200 W/m
2
- -
100 - 200 W/m
rooms,
conser-
▪
vatories,
cellars,
▪
etc.
Tiled floors in
kitchens,
▪
living
▪
100 - 150 W/m
2
- -
100 - 150 W/m
rooms,
halls,
▪
etc.
* May be up to 225 W/m2 in rim zones e.g. under large
windows
On concrete sub floors and under tiles, only
▪
If connected to a separate floor sensor and ther-
▪
mostat
cm)
2
2
2
2
Danfoss Heating Solutions VIAMJ202
13
Installation Guide ECflex Heating Applications
Wooden floor coverings
Wood shrinks and swells naturally depending on the
relative humidity (RH) in the room. The optimal range
is 30-60% RH.
Avoid beech and maple in multilayered floor
▪
coverings unless press dried.
Install a vapour barrier for sub floors <95% RH
▪
and a damp proof membrane >95%.
4.1 Floor Heating in Thin Beddings
New tiles floor in wet rooms
New floor covering in dry rooms
Ensure 100% contact between element and
▪
floor materials above (no air pockets).
Install the heating system in the whole floor
▪
area at 15°C surface temperature.
Always install a floor sensor to limit the floor
▪
temperature. See section 7.1 for further information.
1. New tiles
2. Tile adhesive
3. Damp proof membrane (in wet rooms)
4. Self-levelling compound
5. ECflex heating cable
6. Primer
7. Existing tiles or concrete floor
1. New tiles, wooden floor, laminate, or carpet
2. Vapour barrier and noise absorption mat
(wooden floor / laminate)
3. Latex based compound/tile adhesive
4. ECflex heating cable
5. Primer
6. Existing concrete or wooden floor
Wooden sub floors must be properly anchored
Apply floor plaster before laying the heating el-
▪
ement if necessary.
Additional insulation (tile backer boards)
Can be applied between existing sub floor and
▪
heating element.
Polystyrene (XPS) with high compressive
▪
strength >300 kN/m2.
Concrete or foil faced without cracks.
▪
Must be installed as prescribed by the manufac-
▪
turer.
Floor sensor must be installed above insulation.
▪
Output max. 10 W/m and 150 W/m2.
▪
Damp proof membrane
Apply in wet rooms above the heating cables.
▪
Apply only if not already installed in existing
▪
floor.
14
VIAMJ202 Danfoss Heating Solutions
Tile adhesive or self-levelling compound
Prime the sub floor as specified by the supplier.
▪
The heating element should be securely fas-
▪
tened before applying.
The heating element must be fully embedded
▪
and at least 5 mm.
Required tools
Hammer.
▪
Chisel.
▪
Glue gun.
▪
Installation Guide ECflex Heating Applications
Cut out a wall groove and fix cable
ducts and connection box. Chisel
off a groove for the sensor conduit
and cold cable. Fix the sensor con-
Roll out the cable and attach it to
the sub floor by means of Danfoss
CLIP fastening accessories or similar.
duit e.g. with a glue gun.
4.2 Floor Heating in Joist Floor Constructions
The sub floor construction must be well insulated
Insulate thermal bridges and close vents, e.g.
▪
between the floor construction and walls/roofs.
The heating cables may not touch the insulation
or woodwork
The distance between the heating cable and the
▪
planks and joists should be at least 30 mm.
The optimal distance between the heating ca-
▪
bles and the floor covering is 3-5 cm.
The heating cable must be fastened to the wire/
▪
foil at 30 cm intervals.
Apply flexible self-levelling compound, damp proof membrane,
and/or tile adhesive, depending on
the floor finish.
1. Wooden floor covering.
2. Floor joists.
3. ECflex Heating Cable .
4. Chicken wire and/or aluminium foil.
5. Insulation.
6. Sub floor construction.
Heating cables may cross a joist
Through a 50 mm recess lined with aluminium
▪
tape
Make sure the cable is never in contact with the
▪
joist
Only one cable in each recess
▪
Required tools
Compass saw.
▪
Aluminium tape.
▪
Danfoss TWISTCLIP or similar.
▪
Danfoss Heating Solutions VIAMJ202
15
Installation Guide ECflex Heating Applications
Apply chicken wire or similar onto
the insulation.
Cut a 50 mm recess and cover with
aluminium tape where cables cross
a joist.
4.3 Floor Heating with EFCI DRY
Attach the cable and sensor properly with Danfoss TWISTCLIP , cable
ties, or heat resistant tape.
1. Timber / parquet /laminate.
2. Noise absorption mat / rag felt.
3. ECflex EFTPC .
4. EFCI DRY .
5. Damp proof membrane.
6. Existing floor construction (e.g. concrete, gypsum, polystyrene)
1. Linoleum / vinyl, carpet.
2. Pressure distribution board (e.g. plywood).
3. Noise absorption mat / rag felt.
4. ECflex EFTPC .
5. EFCI DRY .
6. Damp proof membrane.
7. Existing wooden floor construction.
Installation under carpets, linoleum or vinyl
Must be separated from cables by at least 5 mm
▪
of pressure distribution board.
Observe the insulation value above the pressure
▪
distribution board.
▪
R < 0.10 m2K/W corresponding 1 Tog or a
thin carpet.
16
Required tools
Compass saw.
▪
File.
▪
Glue gun.
▪
Aluminium tape.
▪
VIAMJ202 Danfoss Heating Solutions
Installation Guide ECflex Heating Applications
Cut out a hole for the warm/cold cable connection
and the floor sensor conduit and file any sharp
edges. Fix the conduit to the sub floor with glue or
screws.
See the installation manual for the EFCI product for
further information.
4.4 Floor Heating in Concrete Floors
Heated tiles in bathrooms
New floor in dry rooms
Install the ECflex heating cable. Make sure that the cable, end termination, and warm/cold cable connection
are in contact with the aluminium plate or aluminium
tape at all times.
1. New tiles.
2. Tile adhesive.
3. Damp proof membrane.
4. Concrete.
5. ECflex heating cable.
6. Mesh reinforcement.
7. XPS insulation.
8. Concrete slab.
1. Wooden floor, laminate or carpet.
2. Noise absorption mat / rag felt (under wood).
3. Vapour barrier.
4. Concrete.
5. ECflex heating cable.
6. Concrete slab or foil.
7. XPS insulation.
8. Sand and soil.
Danfoss Heating Solutions VIAMJ202
17
Installation Guide ECflex Heating Applications
Other combinations of floor covering and existing
floor construction are also possible.
The heating cables may not touch the insulation
The heating cable must be separated by mesh
▪
reinforcement, concrete slab or foil.
Embedding in concrete, mortar or screed
The bedding must not contain sharp stones
▪
Must be sufficiently wet, homogeneous, free of
▪
air voids
Apply reinforcement mesh, concrete slab or foil onto the insulation.
Roll out the cable and attach it to the
sub floor or mesh reinforcement by
means of Danfoss CLIP fastening accessories or similar.
Pour at a moderate delivery speed to
▪
avoid displacement of the element
Avoid excessive use of rakes, shovels, vi-
▪
brators, and rollers
The heating element must be fully embedded
▪
and at least 5 mm
Allow a drying time of approximately 30 days
▪
for concrete and 7 days for moulding compounds.
Pour at a moderate delivery
speed to avoid displacement of
the element.
18
VIAMJ202 Danfoss Heating Solutions
Installation Guide ECflex Heating Applications
5 Outdoor Applications
Observe following heat densities (W/m2) for the actual application.
Design temperature Snow and ice melting on ground areas Frost protection of pipe systems
[°C] [W/m2] [W/m2]
0 to -5 200 See table below.
-6 to -15 300
-16 to -25 400
-26 to -35 500
Frost protection of pipe systems [W/m]
Δt [K] Insulation [mm] Pipe diameter DN [mm]
15 20 25 32 40 50 65 80 100 125 150 200
10 8 9 11 14 16 19 24 29 36 44 - -
20 5 6 7 8 9 11 14 16 19 24 28 36
20
30
40
30 4 5 5 6 7 8 10 12 14 17 19 25
40 4 4 5 5 6 7 8 9 11 13 15 19
50 3 4 4 5 5 6 7 8 9 11 13 16
10 12 14 17 20 24 29 37 44 - - - -
20 8 9 10 12 14 17 20 24 29 35 42 -
30 6 7 8 9 11 12 15 18 21 25 29 37
40 5 6 7 8 9 10 12 14 17 20 23 29
50 5 6 6 7 8 9 11 12 14 17 19 24
10 15 19 22 27 32 39 49 - - - - -
20 10 12 14 16 19 22 27 32 39 47 - -
30 8 9 11 12 14 17 20 23 28 33 39 50
40 7 8 9 10 12 14 16 19 22 26 31 39
50 6 7 8 9 10 12 14 16 19 22 26 32
Danfoss Heating Solutions VIAMJ202
19
Installation Guide ECflex Heating Applications
5.1 Snow Melting on Ground Areas
Free constructions, e.g. platforms, steps, bridges, and terraces
1. Top layer of concrete slab.
2. ECflex heating cable.
3. Danfoss CLIP fastening accessory or mesh reinforcement.
4. Underlying free construction.
5. Insulation
Ground areas, e.g. ramps and car parks
1. Top layer of concrete slab or asphalt concrete.
2. Sand bed or concrete.
3. ECflex heating cable.
4. Danfoss CLIP fastening accessory or mesh reinforcement.
5. Supporting layer of crushed stones/concrete /old
asphalt.
6. Insulation (optional, ensure supporting layer is
suitable).
7. Soil.
Ground areas, e.g. driveways, walkways, and pavements
20
VIAMJ202 Danfoss Heating Solutions
1. Top layer of pavement blocks or concrete slab
2. Sand bed
3. ECflex heating cable
4. Danfoss CLIP fastening accessory or mesh reinforcement
5. Supporting layer of crushed stones
6. Insulation (optional, ensure supporting layer is
suitable)
7. Soil
Installation Guide ECflex Heating Applications
Ground thermostat is mandatory
▪
In sand bed: mat output from 250 W/m2 and cable output from 25 W/m.
In concrete bed: cable output from 30 W/m with
▪
a heat density > 500 W/m2 (C-C < 6 cm).
Limited power supply
Reduce the area to be heated, e.g. by heating
▪
tire tracks instead of the whole driveway.
Divide and prioritise the area into 2 zones by
▪
means of ECtemp 850 .
Install less W/m² than recommended. Snow
▪
melting performance will be reduced. Do not install less W/m2 than recommended in areas of
drainage, e.g. in front of heated steps.
Do not install cables in sand only
The heating cables must be protected by a hard
▪
top layer.
Otherwise contact your local sales office.
▪
Prepare installation surface with
Danfoss CLIP fastening accessories
and/or mesh reinforcement. Fix conduit for sensor cable and sensor
tube/dummy for ECtemp 850 sensor,
if any.
Extend cold leads with shrink
tubes, and place connections in a
dry place. Seal all penetrations
through walls or similar structures.
Apply caution tape above cold
leads.
Embedding in concrete, mortar or screed
The bedding must not contain sharp stones.
▪
Must be sufficiently wet, homogeneous, free of
▪
air voids:
Pour at a moderate delivery speed to
▪
avoid displacement of the element.
Avoid excessive use of rakes, shovels, vi-
▪
brators, and rollers.
The heating element must be fully embedded
▪
and at least 5 mm.
Allow a drying time of approximately 30 days
▪
for concrete and 7 days for moulding compounds.
After laying blocks or pouring
concrete/asphalt, install external
sensor(s), and extend sensor cable(s) according to sensor manual.
5.2 Frost Protection of Pipes
Pipe tracing
1. Sensor.
2. ECflex heating cable.
3. Insulation.
4. Fitting.
5. Valve.
Danfoss Heating Solutions VIAMJ202
21
Installation Guide ECflex Heating Applications
Subsurface pipe tracing
1. Concrete breeze block (optional) and/or XPS insulation (optional).
2. ECflex heating cable.
3. Sand bed.
4. Soil.
5. Sensor (not shown).
The required output [W/m]is found in the table on
page 19 and depends on:
λ W/mK Thermal conductivity for insulation ≈
0.04 used in table
Δt K Temp. diff. between media/surround-
ings
D mm Outer insulation diameter
d mm Outer pipe diameter
Cables wrapped around pipes are attached as shown for every 20-30 cm of
pipe with aluminium tape. Straight cables must be fitted as shown at 5 or 7
Apply aluminium tape below
(mandatory for plastic pipes)
and on top of pipe for the whole
length of cable.
o’clock. In-pipe cables are fitted directly in the pipe with compression gland.
The number of cables n
Relation between required output and cable
▪
output
Number of cables per metre in the length direc-
▪
tion
Min. 2 for DN125-200
▪
Integer = straight cables (easier installation)
▪
Decimal = wrapped around pipe
▪
For plastic pipes:
Cable output max. 10 W/m.
▪
Apply aluminium tape below and on top on the
▪
whole length of the cable.
Extend cold leads/terminate cables, and place connections in a
dry place. Mount connection box
on or close to pipe, and install
thermostat next to pipe.
22
VIAMJ202 Danfoss Heating Solutions
Installation Guide ECflex Heating Applications
6 Finalizing the Installation
Connecting cables
Connect all cold leads and the sensor to the connection box.
See the installation manual for the thermostat.
▪
See wiring diagram and other important infor-
▪
mationin section 1.1.
Observe that the total Amps do not exceed the
▪
capacity of the thermostat. Otherwise install a
contactor.
Final check and documentation
Make sure that the heat distributor (e.g. floor,
▪
pipe) can withstand the heat from the element.
This is particularly important if the element is
connected to a thermostat that does not allow
configuration of maximum temperature. See
section 4 for details.
This is particularly important if the ele-
▪
ment is connected to a thermostat that
does not allow configuration of maximum
temperature.
Document the following using text, drawings, or
▪
photos:
cable type, spacing, depth, layout, circuit
▪
ID, sensors.
location of connections between cold lead
▪
and heating element.
location of end caps (twin conductors
▪
only).
location of expansion joints, if any.
▪
Complete the warranty form.
▪
Instruct the end-user or the daily supervisor in
▪
the operation and maintenance of the heating
system.
Before every period of continuous use, check for
▪
faults in the distribution board, thermostat, and
sensors.
Re-check and compare the ohm rating and
▪
insulation resistance.
Danfoss Heating Solutions VIAMJ202
23
Installation Guide ECflex Heating Applications
7 Optional Settings
If the element is connected to a thermostat such as a
ECtemp , configure basic settings according to the table below and as described in the thermostat installation manual.
Thermo-
Floor heating in general Snow and ice melting
stat Max. load
ECtemp
16 A Room temp. 20-22 °C
13x
ECtemp
330/610
ECtemp
16/10 A On < +3 °C On < +5 °C
15A - -
Floor Temp.: see section
7.1
53x
ECtemp
16A - -
550
Danfoss
15A (FT) - -
LINK
ECtemp
2 x 15A - Melting < +3 °C, Standby
850
If applicable, adjust the temperature limit in accordance with the manufacturer’s recommendations in
order to prevent damage to e.g. the floor or the pipe.
7.1 Floor Temperature Settings
According to ISO 13732-2, the comfortable floor temperature depends on the floor covering material.
Concrete floor (tiles) 26 - 28,5°C
Soft wood (pine) 22,5 - 28°C
Hard wood (oak) 24,5 - 28°C
Textiles (rugs, carpets) 21 - 28°C
on ground areas
systems
- -
-
< -3 °C
Frost protection of pipe
For most wooden floor products, the tempera-
▪
ture is usually around 27 °C.
All floor temperature settings must be a few degrees
higher to compensate for the heat resistance in the
floor covering.
24
VIAMJ202 Danfoss Heating Solutions
Installation Guide ECflex Heating Applications
Thermal resist-
Examples of flooring Details Approximate setting
ance [m2K/W]
0.02 15 mm tile Stone or ceramic 26°C
0.05 8 mm HDF based laminate
0.10 14 mm beech parquet
0.13 22 mm solid oak plank
<0.17 Max. carpet thickness suitable for floor heat-
>800 kg/m
650 - 800 kg/m
>800 kg/m
acc. to EN 1307 34°C
3
3
ing
0.18 22 mm solid fir planks
450 - 650 kg/m
The floor temperature must be increased slowly during the first week to allow the new floor to settle. This
is also recommended at the beginning of a heating
season.
for 25°C floor temper-
ature
28°C
3
31°C
32°C
3
35°C
Danfoss Heating Solutions VIAMJ202
25
Installation Guide ECflex Heating Applications
26
VIAMJ202 Danfoss Heating Solutions
Installation Guide ECflex Heating Applications
Danfoss Heating Solutions VIAMJ202
27
Installation Guide ECflex Heating Applications
Danfoss A/S
Electric Heating Systems
Ulvehavevej 61
7100 Vejle
Denmark
Phone:+45 7488 8500
Fax: +45 7488 8501
Email: EH@danfoss.com
www.EH.danfoss.com
Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products
already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed. All trademarks in this material are property of the respective
companies. Danfoss Heating Solutions and the Danfoss Heating Solutions logotype are trademarks of Danfoss A/S. All rights reserved.
088L0802 & VIAMJ202 Produced by Danfoss Heating Solutions © 01/2012
Loading...