Danfoss GX Heating Cables Installation guide
Installation Manual
GX
Danfoss GX Heating Cables & Mats
Manuel d'installation
Câbles et tapis de chauffage Danfoss GX
Danfoss
BRINGING WARMTH TO LIFE
G
TM
Table of Contents
Danfoss GX Snow Melting System ......................................................................................
Danfoss GX Cable/Mat ............................................................................................................
Warnings ......................................................................................................................................
General Installation Guidelines ............................................................................................
Sensor Installation ....................................................................................................................
Sensor Placement .....................................................................................................................
Installing the Heating Mat/Cable ........................................................................................
Concrete Installation ................................................................................................................
Asphalt Installation ..................................................................................................................
Stonework Installation.............................................................................................................
Danfoss Warranty ......................................................................................................................
Table des Matières
2
3
4
5
6
7
8
9
11
12
14
Fondeuse à neige Danfoss GX...............................................................................................
Câble/tapis Danfoss GX............................................................................................................
Mises en gar
de.........................................................................................................................
...
Lignes directrices générales d'installation........................................................................
Installation du détecteur.........................................................................................................
Placement du détecteur..........................................................................................................
Installation du tapis/câble de chauffage...........................................................................
Installation dans le béton........................................................................................................
Installation dans l'asphalte.....................................................................................................
Installation dans la maçonnerie............................................................................................
Garantie Danfoss........................................................................................................................
15
16
17
18
19
20
21
22
24
25
27
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2017
Danfoss
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1
Danfoss GX Snow Melting System
Danfoss GX Snow Melting System
The GX Snow Melting System consists of the GX 850 Automatic Control Panel (ACP), heating
cables or heating mats and multiple digitally operated sensors which provide an economical
and efficient means of snow melting and ice protection. Built for outdoor use, the GX system
provides safety and peace of mind to homeowners and business owners alike
surfaces such as asphalt, concrete and paving tiles the Danfoss GX Snow Melting System is both
versatile and easy to install. The Danfoss GX Snow Melting System operates automatically by
digitally sensing moisture and temperature.
The GX System is embedded during the paving installation, such that some control and
accessories
It is recommended to install thermal insulation below the application of the heating cables or
mats. Improved performance and efficiency will decrease overall operating costs.
CAUTION!
It is important that this equipment is
with the proper sizing, installation, construction and operation of outdoor heating systems
and the hazards involved. The GX system is designed for outdoor ice and snow melting
applications only.
must also be installed at this time.
. Engineered for
only installed by qualified electricians who are familiar
Note!
The installation shall be in accordance with the manufacturer's instructions and national and
local electrical codes
. The installation shall be in accordance with Part 426, American National
Standard Institute / National Fire Protection Association (ANSI/NFPA70), National Electrical
Code (NEC) and Canadian Electrical Code (CEC), Part 1. You must use a ground fault
equipment protection (GFEP) device for outdoor areas.
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AX: 416-352-5981
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2
Danfoss GX Cable/Mat
Danfoss GX snow melting cables are the basis of an electric snow melting system designed to ease
the snow removal process as well as lessen its environmental impact. The GX system is both
efficient and economical. It consists of twin conductor heating cables and a single point connection
with a 20’ (6m) power lead. Danfoss GX cables are CSA certified.
Snow melting cables/mats suitable for concrete, asphalt, pavers, and stonework
Ideal for driveways, parking lots, sidewalks, stairs, ramps, loading areas and bridges
o
o
Reduces the environmental impact of snow and ice removal by eliminating the use of fossil
fuel driven snow blowers, snowplows, rock salt and/or other chemicals
Silent, efficient, automatic and safe
Single point connection
Zero EMF’s
Genuine twenty year warranty
Danfoss GX Cable/Mat Specifications
Type:
Voltage:
Output:
Heating Element Size:
Mat
Cable
Power Lead
Bending Radius:
Cable Diameter:
Conductor Insulation:
Outer Insulation:
Max. Temperature:
Min. Installation Temp.:
Twin conductor
208, 240, 277, 347, 480, 600V
50W/sq.ft. (540W/m ) Cable 12W/ft
2
6.5’ (1.98 m) - 80’ (24.38 m) long x 2’ (0.61 m) wide
35’ - 545’ (10.7 - 166 m)
20’ (6.0 m)
Minimum 1.5” (3.8 cm)
1/4”(0.65 cm)
/
FEP Teflon
PVC
220°F (105ºC)
40°F (5ºC)
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Connection (all voltages)
Phase - Black
Phase- White
Ground - Green
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3
Warnings
Caution!
Is it important to read the instructions carefully before installing the Danfoss GX
Snow Melting System.
For outdoor installation only;
l
Never cut the black heating cable;
l
lExtreme care must be used to ensure the GX cables are not damaged when using sharp
tools, wheelbarrows, heavy machiner y and paving equipment, shovels, rakes, or other
implements. Avoid walking on the cables or mats during installation;
lIt is not recommended to install the Danfoss GX heating mats with a controller that
does not contain an integrated temperature limiter;
lThe GX mat or GX cable must be embedded in mortar or mortar mixture, concrete, sand
or similar material;
lThe power lead/heating cable connection and at least 1’ (30 cm) of the power lead
must be embedded in the paved surface;
lRemaining power lead should be run through the conduit
lThe power lead may be extended if required;
lDo not install the Danfoss GX cables in such a manner that two black heating
cables touch, cross or overlap;
Remember to always measure, verify and record the actual resistance throughout the
installation process:
1. Out of the box
2. After installation
3. Before pouring the sand/concrete/asphalt
4. After surface material application
Record these values in the
table on page 20 and on the warranty card, failure to do so
will void the warranty;
lMeasure the resistance between two live conductors as well as the resistance between
each conductor and the ground wire.
l Danfoss recommends using a megaohmmeter to test the insulation resistance.
lRemember to check that the supply voltage matches the voltage required for your
particular Danfoss GX product;
lRemember to place the labels as instructed in this manual;
l Metal structures or materials used for the support of or on which the Danfoss GX is
installed must be grounded in accordance with CSA Standard C22.1, Section 10 and the
NEC.
Please consult the Danfoss Electrical Heating Division for any other questions,
concerns
or advice.
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2017
Danfoss
VIAPF222 05/17
TEL:
1-888-326-3677
416-352-5981
FAX:
.
4
General Installation Guidelines
Planning
It is recommended to sketch a plan of the layout for the heating system installation. Mat/cable
location, sensor placement, junction boxes, conduits and the location of drains and other
obstructions should be noted.
Mat Alterations
The GX heating mats can be altered to accommodate drains, obstructions or bends in the layout.
By carefully cutting the mat tape, many patterns
illustrates this.
and designs can be created The figure below
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Danfoss
Free Cable and Cable Strapping
Should the Danfoss cable strapping be used for the GX cable, follow the instructions below for
ease of installation.
Attach the Danfoss
strapping to the
ground surface
(3’ apart)
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Place the GX cable
(3” standard
spacing)
Clip the GX cable
in place
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5
Installing a Feeder Cable
(For use with Gx850 and/or ground sensors, not applicable when using DS-2B.)
A feeder cable for a sensor may be needed. A 50’ (15m) cable is supplied with each sensor.
Approx. 1.5’ (0.5m) of this cable should be coiled inside the bottom of the sensor tube. The
remaining cable may be lengthened. The feeder cable must be a four wire cable.
Installing a Sensor and a Conduit
The sensor and the conduit may be installed in connection with the actual construction work
and connected at a later date. The following applies for all types of installations:
1. Ensure that the conduit is sealed when the concrete is poured.
2. The conduit must be positioned so that it is flush with the surrounding terrain.
must be placed so that the upper brass surface is horizontal.
3. The base below the tube must be hard, e.g. a concrete tile, in order to ensure that the sensor is
not pushed into the ground if for example a vehicle runs over it. The tube is designed
mounted on a plate using the two screw holes inside the conduit.
4. A metal/plastic pipe, through which the sensor cable may be passed, should be run as far as
the sensor conduit.
5. Coil approx. 1.5’ (0.5m) of the sensor cable inside the conduit.
6. Place the sensor inside the tube until
resting on the internal collar inside the conduit. The sensor may be extracted at a later date
using the two holes found around the edge of the sensor conduit. The grooves on the outside of
the sensor should correspond
with the holes in the conduit.
it is horizontally flush with the edge of the conduit and
The sensor
to be
Installation in Asphalt
The temperature must not exceed F °C) around the sensor/tube. A wooden block or
similar place holder may be used in the area where the tube/sensor can be placed subsequently.
The installation pipe used for the sensor cable should, in that case, be a metal tube that can
withstand high temperatures.
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Installation of conduit with sensor cable
176° (80
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Placement of Ground Sensors
Correct placement of the sensor(s) is important for the system to work as
intended. Some basic guidelines follow:
The number of ground sensors:
1. The more sensors added to the system the better the performance.
2. The basic principle is to place one sensor where the snow/ice will appear first (for fast
detection) and one sensor where the snow/ice will disappear
not obvious just place the sensors as far apart from each other as possible.
3. With only one sensor you will have to decide what is most impor tant:
a) fast detection and activation of the system or
b) securing a complete melting of all snow/ice. A
in terms of detection and activation than a two sensor ground system, where one sensor
measures the ground temperature and the other sensor measures the moisture.
4. With more than two sensors it is possible to cover problem spots where snow usually is not
detected or where snow is not completely melted when the system stops.
last (for complete melting). If it is
one sensor ground system will be slower
Placement of Individual Ground Sensors
1. The sensor must be placed within the heated area and at least 3.3’ (1 m)
from the edge of the area, if possible.
2. The sensor must be placed in between the heating cables - a distance
of minimum 0.4” (1 cm) should be maintained between the sensor tube
and the heating cable.
3. There
must be a distance of minimum 3.3ft. (1 m) between the two sensors.
0.4” (1cm)
Junction box
SensorMin. 3 ft.
min 3.3ft.
(1m)
Feeder cable
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AX: 416-352-5981
F
.
7
Installing the heating mat
Begin by fastening the heating mat to the mesh reinforcement using tie-wraps or cable strapping.
Do not fix the heating cable of the mat in such a way that it is compressed or strained - it must be
able to move. Unroll the mat up to the point at which it is to be flipped and turned. Use the figure on
page 5 to alter the mat.
Cut the tape using scissors
already unrolled mat. Do not cut the cable! The cable can be carefully detached from the tape
and then placed as free cable. This feature can be very useful for curves and around drains or other
obstructions.
Labels:
Labels 2E or F are to be placed at the switchboard
Labels 3E and F are to be placed in the room or area where the heating mat/cable is installed
and rotate the mat so that it can be unrolled to cover the area next to the
Installing the heating cable
The GX cable must be laid out with even spacing over the entire area to be heated. To ensure an
accurate and easy method of installing the GX cable it is recommended to use Danfoss cable
strapping. Attach the cable strapping to the rebar or other supporting structure using tie-wraps.
The strapping should be laid perpendicular to the direction
strapping 3’ (75cm) apart. Secure the heating cable to the cable strapping at the correct center-tocenter distance. Do not secure the cable too tightly as this may damage the cable. If not using the
cable strapping, affix the heating cable to the rebar or wire mesh using tie wraps.
Labels:
Labels 2E or F are to be placed at the switchboard
Labels 3E and F are to be placed in the room or area where the heating mat/cable is installed
Center-to-Center (C-C) distance
the cable will be unrolled. Space the
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The C-C distance is the distance between the GX cables (GX mats have a preset C-C distance).
Standard spacing for 50W/sq.ft. (540W/m ) is 3” (7.5 cm). In a typical application the C- C distance
should not exceed 4” and be less than 3” if the cables are installed as part of a total heating system.
If the C-C distance is higher, cold spots may form on the surface and incomplete melting may occur.
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