Danfoss TX-FH Installation guide

IMPORTANT!

DO NOT CROSS OR CUT THE HEATING CABLE.

REMEMBER TO MEASURE, VERIFY AND

RECORD THE RESISTANCE. USE A MEGGER TO

TEST THE RESISTANCE TO GROUND.

Danfoss

BRINGING WARMTH TO LIFE

TX-FH

Installation Manual

Danfoss TX-FH Heating Cables

TM

Table of Contents

Danfoss System ..........................................

TX-FH Electric Floor Heating

Danfoss TX-FH Cable Specifications ............................................................

Measuring the Resistance ...............................................................................

General Notes.......................................................................................................

General TX-FH Cable Installation Guidelines.............................................

Danfoss TX-FH Installation - Step by Step..................................................

Danfoss Warranty ...............................................................................................

Appendix A: Layout Example ........................................................................

2

3

3

4

6

7

9

10

Copyright 2009 Danfoss Inc.

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Danfoss TX-FH Electric Floor Heating System

Danfoss TX-FH Electric Floor Heating System

Danfoss TX-FH cables are a thick floor heating solution. Thick cables have a larger diameter
than the Danfoss LX floor heating cables, allowing them to be lower in COST, higher in HEAT
OUTPUT, and more DURABLE. They are installed in mud beds below the flooring materials
and are most often used in new construction where overall material cost is a primary
concern.
Benefits of the TX-FH thermal storage are numerous over other heating methods, and
include:

· Easy and flexible installation combined with a single point connection.

· Extremely durable

· Single point connection

· Twin conductor cable

· Emits zero EMF (Electromagnetic fields)

· Safety approved for wet locations

· Reduced dust and allergens

· Silent, safe, and efficient operation

· Reclaimed interior floor space (no furnace/boiler required)

· Genuine ten year non-prorated warranty

CAUTION!

It is important that this equipment is installed only by qualified electricians who are
familiar with the proper sizing, installation, construction and operation of floor warming
system and the hazards involved. The heating cable is designed for under floor heating
purposes only.

Copyright 2009 Danfoss Inc.

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2

Products

Danfoss TX-FH Specifications

Type:
Voltage:
Output:
Heating Element Size:
Power Lead
Cable Diameter:
Wire insulation:
Outer insulation:
Max. Allowable Temp.:
Min. Installation Temp.:

Note : TX-FH cables operated on a 208V power supply will experience a 25% power reduction.

Connection 240V

Phase - Black
Phase - White
Ground - Green

Measuring the resistance

WARNING:

Remember to measure resistance.

Twin conductor
240V
6 W/ft (20 W/m)
60 ft (18 m) to 680 ft (207 m)
10 ft (3.0 m)
1/4 in ( 6 mm )
FEP, Teflon
PVC
220°F (105°C)
40°F (5°C)

TM

MONITOR YOUR INSTALLATION!

USE THE LITTLE BUZZER CONTINUITY

ALARM (PART#088L0028)

Little Buzzer

Using a digital Ohmmeter, t black and white .
Compare the measured resistance to the resistance listed on the product label (on the r lead).

he resistance should be measured between the conductors

powe

Also, measure the resistance between the black and green (ground) wires, and between the white and green
(ground) wires to test the insulation resistance. Both should should have infinite resistance.
Danfoss recommends using for this test with a voltage setting of up to V.

a megaohmmeter 2500

If available,

Record the resistance on your warranty card. Documenting the resistance at each stage of the installation is
required for warranty purposes. If the resistances do not match the expected values, the cable may need to
be damaged and need repair. Contact your Danfoss representative for a repair kit (part # 088L0010)

While not required, you may also want to measure the resistance of the floor sensor. It should be
approximately 12kΩ at room temperature.

Copyright 2009 Danfoss Inc.

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3

GENERAL NOTES

Read before beginning installation!

 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 424, American National Standard Institute /
National Fire Protection Association (ANSI/NFPA70), National Electrical
Code (NEC) and Canadian Electrical Code (CEC). Danfoss recommends
GFCI for heating cables in normally wet areas ( i.e. bathrooms, showers,
kitchens).

All local codes concerning buildings, electrical installations etc. must be



adhered to regardless of instructions provided in this manual. If these
regulations are in direct conflict with instructions stated herein, please
contact the Danfoss Electrical Heating Division.

 It is important that this equipment is only installed by qualified

electricians who are familiar with the proper sizing, installation,
construction and operation of electric heating cable systems and the
hazards involved.

Remember to check that the supply voltage matches the voltage required



for your particular Danfoss TX-FH product;

Extreme care must be used to ensure the TX-FH cables are not damaged



when using sharp tools or other implements. Avoid walking on the cables
or mats during installation;

Never cut the heating cable;



Do not install the Danfoss TX-FH cables in such a manner that two



heating cables touch, cross or overlap;

Copyright 2009 Danfoss Inc.

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4

GENERAL NOTES ( continued )

Read before beginning installation!

easure, verify and record the actual resistance throughout the installation

 M

process:

1. Out of the box

2. After installation

3. After laying the mud bed

4. After connecting thermostat and/or contactors

Record these values in the warranty card. Failure to do so will void the warranty;

 The Danfoss TX-FH electric heating system is most effective with tiled or stone or

concrete floors. If carpet, wood or other flooring materials are to be used, please
consult with Danfoss Electrical Heating Division.

The TX-FH cable must be embedded in mortar or mortar mixture, concrete or



similar material.

 Ensure that all sharp stones and debris are removed from the area where the

heating cables are going to be installed.

 Make sure the cable is not subjected to excessive tension or strain, especially at

the heating cable to power lead slice.

 At low temperatures, the heating cable stiffens and may be difficult to work with.

To overcome this, connect the cable to the mains for a brief period of time.

Ensure the cable is fully rolled out when this is done.

 Do not install TX-FH cable in walls or ceilings

 Do not install the heating cables under cabinets, kitchen island etc.

 Never use

Please consult the Danfoss Electrical Heating Division for any other questions,



concerns or advice.

the heating cables to cure the tile adhesive products.

Copyright 2009 Danfoss Inc.

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5

General TX-FH Cable Installation Guidelines

Cable Strapping

Should the Danfoss cable strapping ( part # 088L1051, # 088L1050 ) be used for the TX-FH cable,
follow the instructions below for ease of installation.

Secure the Danfoss

strapping to the

ground surface

(3 feet apart)

Place the TX-FH cable

Clip the TX-FH cable

in place

Installing the heating cable

The TX-FH 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 TX-FH cable it is recommended to use Danfoss cable
strapping. The strapping should be laid perpendicular to the direction the cable will be unrolled.
Space the strapping 3ft (90cm) apart. Secure the heating cable to the cable strapping at the correct
center-to-center distance. Do not secure the cable too tightly as this may damage the cable.

If wire mesh is available, the cable strapping is not required. The heating cable can be attached
directly to the rebar or wire mesh using tie wraps.

The heating cable can be also secured with hot melt glue, duct tape or 3/8” crown staples.

Danfoss TX-FH Typical Installations

Finished Flooring ( tiles, marble etc.)

Directly on plywood.

Sensor
Mud Bed
Heating Cable ( max. 2” from surface)

Subfloor

Copyright 2009 Danfoss Inc.

Directly on concrete.

NA.EFHTH-FHM- 07/2009

Insulation ( optional)

Finished Flooring ( tiles, marble etc.)

Mud Bed
Heating Cable ( max. 2” from surface)

Sensor
Insulation ( optional)

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6

Danfoss TX-FH Installation - Step by Step

STEP 1: PLAN YOUR LAYOUT

Make a sketch of the area to be covered with heating TX-FH cables. Accurately measure the net
area of the floor. This is the area you would walk upon. Do not install heating cable under the
permanent fixtures. Select the cable spacing. Never space cables closer than 4” apart . Danfoss
recommends 6” standard spacing.

You should also plan the location of the thermostats, floor sensors locations and their conduit’s
location. The start of cables should be as close as possible to the thermostat’s final placement.

STEP 2: INSTALLING THE FLOOR SENSOR AND CONDUIT

A floor sensor should be installed in a rigid conduit. The conduit protects sensor and facilitates
its replacement in the unlikely event of failure.

The sensor and the conduit may be installed in connection with the actual construction work

and connected at a later date. Please observe the following:

1. Ensure that the conduit is sealed before the concrete is poured.

2. The conduit must be positioned between the heating cables.

3. Place the sensor inside the tube until it reach

4. The floor sensor should be installed at least 10 to 15 in into the heated area.

5. The floor sensor has a standard 10ft (3m) lead that may be extended with 20 AWG wire.

es the end of the conduit.

STEP 3: MEASURE THE RESISTANCE OF THE HEATING CABLE

Using a digital ohm-meter, measure the resistance of the TX-FH cable. Compare the measured
value with the resistance listed on the label of the power lead.

Remember to record the measured resistances on the warranty card. Documenting the
resistance at each stage of the installation is required for warranty purposes.

STEP 4: INSTALLING THE TX-FH CABLE

Install the heating cable. You may need to install the cable strapping before installing the TX-FH
cable.

The power lead splice and and at least 12in (30 cm) of the power lead must be embedded in the
mass material. The remainder of the power lead should be in a conduit that extends to the
thermostat or contactor. The power lead may be extended if required.

Measure the resistance once again and record the information on the warranty card.

TIP: Danfoss recommends taking a picture of the cable layout and conduit placement during
installation. This can help in the unlikely case that the cables need repairs and for warranty
claims.

Copyright 2009 Danfoss Inc.

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7

Danfoss TX-FH Installation (Continued)

STEP 5: INSTALL THE FLOOR COVERINGS

Apply the mortar bed . Ensure that the contractors are careful not to damage the cable with
tools, heavy bucket of cement , etc. When you are done installing the tile measure the resistance
and record the information on the warranty card.

It is not recommended to power the cables for until the tile adhesive has cured (approximately
30 days). Check with the tile adhesive manufacturer for exact curing times. Doing so can affect
both the integrity of the tiles, and the subsequent proper operation of the TX-FH cables.

STEP 6: CONNECT POWER SUPPLY AND THERMOSTAT

The connection of the TX-FH thermostat must be done by a qualified electrician familiar with
heating cables and in accordance with the National Electrical Code (NEC) and the Canadian
Electrical Code (CEC). Remember to properly ground t

If this is not already done, the sensor should be installed in the conduit. Remember that the
sensor should reach the sealed end of the conduit. Connect the thermostat and sensor
according to the wiring diagram in appendix A.

A final resistance reading of the cables should be carried out and the measured values recorded
on the warranty card.

STEP 7: RECORD INFORMATION AND AFFIX LABELS

 Ensure that all resistances measured are recorded on the warranty card.

 The eight digit product code found on the TX-FH cable power lead must be recorded on

the warranty certificate.

 Install the electrical panel label at the electrical panel, indicating the location of the cable.

 Install the Warning label in a visible area of the floor, for the duration of the construction.

It is also recommended that the label be kept in a suitable location on a permanent basis.

he heating cable braid.

Copyright 2009 Danfoss Inc.

STEP 8: ENJOY THE COMFORT OF DANFOSS TX-FH

The TX-FH electric heating system is now ready to use. Increase the temperature gradually and
adjust it until it reaches a level that suits your personal preferences.

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EXTENDED WARRANTY

For a period of ten (10) years from the date of purchase Danfoss warrants that the Danfoss TX-FH cable is free from
defects in material, design and workmanship. The extended warranty is only valid if the warranty certificate has
been properly completed and mailed, and the installation is in accordance with the installation instructions.

The defective Danfoss TX-FH cable has to be inspected by or submitted to Danfoss or an authorized Danfoss TX-FH
dealer. Failure to comply with all of the foregoing will void this extended warranty. Danfoss will, when the
customer has documented that a defect in the Danfoss TX-FH cable was present at the date of delivery, repair or
supply a new Danfoss TX-FH cable at Danfoss’ option. All claims shall be made within the extended warranty
period. Danfoss shall not be liable for any claims made later than ten years from date of purchase.

Danfoss shall not be liable for any consequential and secondary costs or damages linked to the defect or
replacement of the Danfoss TX-FH cable. Danfoss will be liable for any costs related to the dismantling of defective
product and the installation of a new product; however such liability is limited to the amount of five (5) times the
initial product costs for each damage/case.

THE FOREGOING WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, ON THE PART OF
DANFOSS. DANFOSS DISCLAIMS ANY WARRANTY, EXPRESS OR IMPLIED, OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE. DANFOSS NEITHER ASSUMES NOR AUTHORIZES ANY OTHER PERSON, FIRM OR CORPORATION TO
ASSUME FOR IT ANY OTHER LIABILITY IN CONNECTION WITH SALE OR PRODUCT. DANFOSS SHALL NOT BE HELD
RESPONSIBLE FOR DAMAGE TO PERSON OR PROPERTY, CONSEQUENTIAL LOSS, LOSS OF PROFIT, LOSSES ON GOODS IN
STORE, OR THE LIKE WHICH MIGHT ARISE OUT OF THE FAILURE OF THE EQUIPMENT DELIVERED, IRRESPECTIVE OF THE CAUSE
(INCLUDING FAULTY MANUFACTURE).

How to claim this warranty

Contac t the company's Customer Service
depar tmen t a nd pr ovide the f ol lowing
information:

1) Nature of the manufacturing defect

2) Date of purchase and, if already
installed, date of installation

3) If installed, name of electrician and
foundation installer

4) Resistance readings taken by installer

5) Proof of purchase and serial number
from product label

Our Customer Service department will provide
you with an authorization number and advise you
on the next steps to complete your warranty
claim.

Copyright 2009 Danfoss Inc.

Disclaimer:

This warranty gives you specific legal rights and you may
also have some legal rights which may vary from state to
state or province to province. Danfoss hereby disclaims,
and it is as a condition of the sale, that there are no implied
warranties. Some states and provinces do not allow
limitations on an implied warranty so the above limitation
may not apply to you.

Manufacturer:

NA.EFHTH-FHM- 07/2009

Mail: Danfoss Inc.

6711 Mississauga Rd.,
Suite 410
Toronto, ON
L5N 2W3

Phone: [phone]

1-866-676-8062

Fax: [phone]

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9

APPENDIX A

LAYOUT EXAMPLE

T

Start

10" to 15"

6"

End

Copyright 2009 Danfoss Inc.

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10

Danfoss can accept no responsibility for possible errors in catalogues, brochures, other printed materials, and website information. Danfoss reserves the right to alter its products without
notice. This also applies to products already on order provided that such alteration can be made without subsequent changes being necessary in specifications already agreed upon. All
trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are registered trademarks of Danfoss A/S. All rights reserved.

Danfoss Inc.
Toronto
Toll Free: 866-676-8062

Presetting

CD-ST

2

Copyright 2009 Danfoss Inc.

Presetting

CD-ST VD.33.U1.02 © Danfoss 06/99

2

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Danfoss

TX

BRINGING WARMTH TO LIFE

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