Danfoss RX Fact sheet

LEGEND

DRAWING LIST

RX-1

Legend/Drawing List

RX-2

RX Constant Watt Cable Specification

RX-4

RX Self-Regulating Cable Specification

RX-5

RX Typical Roof Install

RX-3

RX Typical Dorm, Valley & Downspout Install

Spacer Clips
088L3004

RX Downspout Edge Protection Plate

088L3002

RX-C Roof Clips Type A

088L3024

RX-C Roof Clips Type B

088L3003

Shingle Clips
088L3005

DS-8C Application

RX-6

RX-7

GX-850M Application

Shingle Clips
088L3012

RX Roof Clips

088L3001

RX-8

RX-1200 Application

Drawing No:

Drawn By: Scale:

Date:

Quote No:

The Contractor shall verify all job site

dimensions all drawing, details &

specifications.
The Contractor shall report any

discrepancies, in writing to Danfoss

prior to commencing with any work.

11655 Crossroads Circle

Baltimore, Maryland 21220

Tel: [phone] Option: 3 Fax : [phone]

www.Heating.Danfoss.us

Drawing Title:

Project:

Rep:

No:

Date:

Description:

Date Desc.

1.

March 2018

RX General Submittal

Legend/Drawing List

RX-1

1.3. Automatic Snow Controller shall have an
adjustable timer providing up to ninety minutes of
system operation after snowfall ceases for
complete melting.

1.4. Automatic Snow Controller shall have the following
modes.

a. Automatic
b. Constant OFF
c. Constant ON (manual timer)

1.5. Automatic Snow Controller shall have adjustable
parameters

a.Melting Temperature (32°F to 49°F)

b. Timer (5 to 95 minutes)

1.6. Automatic Snow Controller shall be able to indicate
the actual temperature and moisture levels for
sensors.

1.7. Automatic Snow Controller shall have info-button
for help/information.

1.8. Automatic Snow Controller shall have
self-doagnosis program, which will detect faults and
give them an alarm.

1.9. Automatic Snow Controller shall have individual
LEDs to provide indication of alarm and heater
operation.

1.10. Automatic Snow Controller shall be capable of
accepting four roof sensors.

1.11. Automatic Snow Controller shall have
milti-language capabilities (English, Spanish, and
French)

1.12. Sensors shall include 50' lead.

Option 2: Snow Switch Control
The system shall be controlled by Danfoss DS-8
temperature and moisture sensor either directly or
through an appropriate contactor.

2.1. DS-8 shall be microprocessor-based to provide
effective, economical, automatic control.

2.2. DS-8 shall have an adjustable timer providing
up to ninety minutes of system operation after
snowfall ceases for complete melting.

RX Constant Watt Cable Specification

1. General

Supply and install a complete system comprised of
heating cables, accessories and controls for keeping
roof eaves, gutters and downspouts from being
clogged by ice and snow.

2. Material

2.1. Shall be Danfoss RX kits dual conductor heating
cable.

2.2. Conductor: Copper or copper alloy with nickel
coating.

2.3. Insulation: FEP DuPont with an average thickness
not less than 0.25 mm and than layer of XLPE.

2.4. Shield: Tin coated drain wire combined with 0.050
mm aluminium foil coated with 0.012 mm PBT, 100%
coverage.

2.5. Jacket: PVC with an average thickness not less than

0.75 mm.

2.6. Lead free 1/4" round heating cable that is both
flexible and UV protected.

2.7. Rated temperature: 220 °F (105 °C), maximum

voltage 277 V.

2.8. Shall include 6' cold lead with heavy duty grounded
plug.

2.9. Heating cable circuit shall be protected by a ground
fault device in accordance with section 426 of the
NEC.

2.10. Shall be approved to applicable UL and CSA
standards.

3. System Controls

Option 1: Automatic Snow Controller
The system shall be controlled by Danfoss GX 850
control panel with external digital temperature and
moisture sensors either directly or through an appropriate
contactor.

1.1. Automatic Snow Controller shall be
microprocessor based to provide effective,
economical, automatic control.

1.2. Automatic Snow Controller shall have dual zone
capability.

2.3. DS-8 Snow Controller shall have the following
modes.

a. Manual ON
b. Automatic
c. Stanby/Reset

2.4. DS-8 Snow Controller shall have adjustable
parameters

a.Melting Temperature (34°F to 44°F)

b. Timer (30 to 90 minutes)

2.5. DS-8 Snow Controller shall have two sensors:
Moisture and Temperature.

Option 3: Thermostat
The system shall be controlled by an ambient
sensing thermostat Danfoss 088L3422 either directly
or through an appropriate contactor.

Option 4: Manual Switch
The system shall be controlled by a manual switch
either directly or through an appropriate contactor.

4. Execution

4.1. Installation

a. System must be installed as per manufacturer's
recommendation using method described in
installation guide.
b. Place the heating cables and sensors in the
surface material as per the installation guide.
c. Inspect the cable and controls upon receiving
the shipment. Note any damage and ensure
materials received match the order and shopping
documents.

4.2. Tests

a. Refer the manufacturer's literature for
requirements for testing and documenting cable
resistance and insulation-to-ground readings.
b. Take test as outlined in the Installation manual.
c. If problems are discovered consult the
manufacturer.
d. If unable to correct problems notify the engineer
before proceeding with installation.
e. Keep record of all readings for inspection ny the
engineer or for submittal to the manufacturers to
ensure a valid warranty.

5. Warranty

5.1. Manufacturer shall offer a 2-year, non-prorated
warranty.

Drawing No:

Drawn By: Scale:

Date:

Quote No:

The Contractor shall verify all job site

dimensions all drawing, details &

specifications.
The Contractor shall report any

discrepancies, in writing to Danfoss

prior to commencing with any work.

11655 Crossroads Circle

Baltimore, Maryland 21220

Tel: [phone] Option: 3 Fax : [phone]

www.Heating.Danfoss.us

Drawing Title:

Project:

No:

Date:

Description:

RX Constant Watt

Specifications

N.T.S

Date Desc.

1.

Rep:

March 2018

RX General Submittal

RX-2

TPE

Tin Plated

Copper Braid

TPE Insulation

Jacket

Bonded
Jacket

Self-Limiting

Heating Element

Tin Plated

Copper Bus Wires

RX-C Self Regulating Cable

RX-C Self Regulating Cable Specification

1.2. Automatic Snow Controller shall have dual zone
capability.

1.3. Automatic Snow Controller shall have an
adjustable timer providing up to ninety minutes of
system operation after snowfall ceases for
complete melting.

1.4. Automatic Snow Controller shall have the following
modes.

a. Automatic
b. Constant OFF
c. Constant ON (manual timer)

1.5. Automatic Snow Controller shall have adjustable
parameters

a.Melting Temperature (32°F to 49°F)

b. Timer (5 to 95 minutes)

1.6. Automatic Snow Controller shall be able to indicate
the actual temperature and moisture levels for
sensors.

1.7. Automatic Snow Controller shall have info-button
for help/information.

1.8. Automatic Snow Controller shall have
self-doagnosis program, which will detect faults and
give them an alarm.

1.9. Automatic Snow Controller shall have individual
LEDs to provide indication of alarm and heater
operation.

1.10. Automatic Snow Controller shall be capable of
accepting four roof sensors.

1.11. Automatic Snow Controller shall have
multi-language capabilities (English, Spanish, and
French)

1.12. Sensors shall include 50' lead.

Option 2: Snow Switch Control
The system shall be controlled by Danfoss DS-8
temperature and moisture sensor either directly or
through an appropriate contactor.

2.1. DS-8 shall be microprocessor-based to provide
effective, economical, automatic control.

1. General
Supply and install a complete system comprised of
heating cables, accessories, and controls for
keeping roof eaves, gutters and downspouts from
being clogged by ice and snow.

2. Material

2.1. Shall be Danfoss RX-C self-regulating heating
cable.

2.2. The self-regulating heating cables shall consist
of two (2) 16 AWG nickel-plated copper bus
wires embedded in parallel in a radiation-cross
linked polymer core that varies its power output
in response to temperature all along its length,
allows the heating cable to be cut in the field.

2.3. The heating cable shall be covered with a
radiation cross-linked polyolefin dielectric jacket
and protected by a tinned-copper braid and a
polyolefin outer jacket.

2.4. The heating cable shall operate on line voltage
of (select: 120V, 240V, 208V or 277V)

2.5. The heating cable shall have a nominal power
output of 12W per foot in snow and ice and 5W
per foot in air.

2.6. Power connection, end seal, splice, and tee
connection kit, shall be able to be applied on site.

2.7. Heating cable circuit shall be protected by a
ground fault device in accordance with section
426 of the NEC.

2.8. Shall be approved to applicable UL and CSA
standards.

3. System Controls

Option 1: Automatic Snow Controller
The system shall be controlled by Danfoss GX850
control panel with external digital temperature and
moisture sensors either directly or through an
appropriate contractor.

1.1. Automatic Snow Controller shall be
microprocessor based to provide effective,
economical, automatic control.

2.2. DS-8 shall have an adjustable timer providing
up to ninety minutes of system operation after
snowfall ceases for complete melting.

2.3. DS-8 Snow Controller shall have the following
modes.

a. Manual ON
b. Automatic
c. Stanby/Reset

2.4. DS-8 Snow Controller shall have adjustable
parameters

a.Melting Temperature (34°F to 44°F)

b. Timer (30 to 90 minutes)

2.5. DS-8 Snow Controller shall have two sensors:
Moisture and Temperature.

Option 3: Thermostat
The system shall be controlled by an ambient
sensing thermostat Danfoss 088L3422 either directly
or through an appropriate contactor.

Option 4: Manual Switch
The system shall be controlled by a manual switch
either directly or through an appropriate contactor.

4. Execution

4.1. Installation

a. The heating cable should be laid in gutters; shall
be suspended in downspouts either as a loop or
a single length and held in place by a downspout
hanger (edge protection plate); and shall be
attached to the roof using the roof clips.
b. The heating cable shall be protected from
damage and installed according to
manufacturer's instructions.
c. Inspect the cable and controls upon receiving the
shipment. Note any damage and ensure
materials received match the order and shopping
documents.

4.2. Tests

a. After installation, the dielectric jacket's insulation
resistance from the conductors to the shield shall
be greater than 1000 mega-ohms.

5. Warranty

5.1. Manufacturer shall offer a 2-year, non-prorated

warranty.

Drawing No:

Drawn By: Scale:

Date:

Quote No:

The Contractor shall verify all job site

dimensions all drawing, details &

specifications.
The Contractor shall report any

discrepancies, in writing to Danfoss

prior to commencing with any work.

11655 Crossroads Circle

Baltimore, Maryland 21220

Tel: [phone] Option: 3 Fax : [phone]

www.Heating.Danfoss.us

Drawing Title:

Project:

No:

Date:

Description:

RX-C Self Regulating

Specifications

N.T.S

Date Desc.

1.

Rep:

March 2018

RX General Submittal

RX-3