Installation Manual

RX Cable Specifications
It is important that this equipment is installed only by qualified persons familiar with the proper
sizing, installation, and operation of electric roof and gutter heating systems. Working on a ladder
and roof can be dangerous; care must be observed. The cables are designed for outdoor
applications only.
1. Read these instructions carefully before installing RX Cable.
2. Do not install RX Cable inside the roof or walls of the building, even if gutter passes
through an enclosed part of the structure.
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3. Never cut the black heating cable .
4. Plug the RX Cable directly to the power receptacle; to prevent increased fire or
electrical hazard do not use an extension cord
5. Ensure the breaker panel is sized appropriately to power the Danfoss RX heating
system.
6. Do not install RX Cable such that two black heating cables touch, overlap or cross
each other.
7. Never energize coiled cable.
8. Before installation, remove all flammable material/debris from the area to be heated,
such as leaves, pine needles, paper, or trash. File or bend away any sharp edges along
the gutter or downspout.
9. Designed for use only with metal or asphalt roofing; do not use with wooden shingles,
gutters or downspouts. Consult your local Danfoss Representative for advice about
other roof types.
10. System should be controlled by on/off switch with pilot light, and have ground fault
protection (sourced by others) and power connection located in a protected area and
grounded.
11. Use with only metal or plastic gutters and downspouts.
Any modification to the Danfoss RX heating cables can result in bodily harm, property damage and
fire. Cable modification will render the warranty null and void, and the manufacturer carries no
further responsibility for the product.
Caution!
The RA-C valve is a normally open valve. In
valve opens when the room temperature is
fect combination for control of cooling and
an application with self-acting sensors type
rising above the set temperature.
fect combination for control of cooling and
heating circuits.
FEK or FED it is ensured that the cooling
Cable Construction:
Rated Voltage:
Output:
Heating Element Size:
Bending Radius:
Cable Diameter:
Power Lead length:
Wire insulation:
Outer Insulation:
Max. Rated Temperature:
Min. Installation Temp.:
Twin conductor
120 V
5W/ft (16.4W/m)
30’to 265’ (9.2 to 80.8 m)
Minimum 1.5” (38 mm)
1/4” (6.5 mm)
6’ (1.82m)
TM
FEP Teflon / XLPE Cross linked Polyethylene
PVC
220°F (105°C)
40°F (5°C)
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Copyright 2009 Danfoss Inc.
088L3371- 07/2009