Danfoss Outdoor Heating Applications Operating guide

Outdoor Heating Applications

Installation Guide Outdoor Heating Applications

Installation Guide

Outdoor Heating Applications

Mats and cables

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Installation Guide Outdoor Heating Applications

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Tabel of Contents

1 Introduction � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 2

2 Installing elements � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 6

3 Applications � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 7

4 Optional settings � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 12

1.1 Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.2 Installation guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.3 System overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.4 Calculating C-C distance for heating cables. . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.5 Planning the installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.6 Preparing the installation area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.1 Installing heating elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.2 Sensor installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.1 Frost protection of roof and gutters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.2 Snow melting on ground areas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.3 Field/seed bed heating. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

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.

The intended uses of the heating elements cov­ered by this installation manual are shown in the
following.

For other applications please contact your local
sales oce.

1�1 Safety Instructions

Never cut or shorten the heating element

• Cutting the heating element will void the
warranty.

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• Cold leads can be shortened to suit require­ments.

Installation Guide Outdoor Heating Applications

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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.

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
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 element must

• be made evident by axing 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 or W/m) for the actual application�

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Installation Guide Outdoor Heating Applications

1�2 Installation guidelines

Prepare the installation
site properly by remov­ing sharp objects, dirt,
etc.

Regularly measure
ohmic resistance and
insulation resistance
before, during and after

Do not lay heating ele­ments under walls and
xed obstacles. Min. 6
cm space is required.

Keep elements clear
of insulation material,
other heating sources
and expansion joints.

installation.

Elements may not
touch or cross
themselves or other
elements and must be
evenly distributed on
areas.

The elements and es­pecially the connection
must be protected from
stress and strain.

The element should be
temperature controlled
and not operate at
ambient temperature
higher than 10°C in
outdoor applications.

• Store in a dry, warm place at temperatures
between +5 °C to +30 °C.

1�3 System overview

Standards DEVIsafe™ DEVIsnow™

(DTCE)

DEVIasphalt™

(DTIK)

DEVIsport™

(DSM3)

60800:2009 (cable) M2 M2 M2 M2

M2
For use in applications with high risk of mechani­cal damage.

Product selection: DEVIsafe™ DEVIsnow™

(DTCE)

DEVIasphalt™

(DTIK)

Frost protection of roof and gutter systems + + - -

Snow and ice melting on ground areas (+) + + +

Field / seed bed heating - + - +

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DEVIsport™

(DSM3)

Installation Guide Outdoor Heating Applications

1�4 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 gutters, please refer to the number
of cables per metre, see section 3.1.

C - C [cm] =

Area [m]

Cable length [m]

x 100 cm

or

C - C[cm] =

Cable output [W/m]
Heat density [W/m]

x 100 cm

Max� C-C distance

Roof and gutter systems 10 cm
Ground areas 20 cm
Field / seed bed heating 25 cm

• Heating cable bending diameter must be at
least 6 times cable diameter.

• The actual cable length may vary +/- 2 %.

C-C [cm]

W/m² @
20 W/m

5 400 500 -

7,5 267 333 400

10 200 250 300

12,5 160 200 240

15 133 167 200

20 100 125 150

25 80 100 120

230V/400V

W/m² @
25 W/m

W/m² @
30 W/m

1�5 Planning the installation

Save the sketch

• Knowing the exact location of these compo­nents makes subsequent troubleshooting
and repair of faulty elements easier.

Please observe the following:

• Observe all guidelines - see section 1.2.

• Observe correct C-C distance (heating cables
only) - see section 1.4.

• Observe required installation depth and

Draw a sketch of the installation showing

• element layout

• cold leads and connections

• junction box/cable well (if applicable)

• sensor

• connection box

possible mechanical protection of cold leads
according to local regulations.

• When installing more than one element,
never wire elements in series but route all
cold leads in parallel to the connection box.

• For single conductor cables, both cold leads
must be connected to the connection box.

• thermostat

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