Roof & Gutter De-Icing

nVent RAYCHEM snow melting systems maintain water flow in gutters and drain pipes. Why do you need a snow melting system?

  • Melting and refreezing of ice can damage roofs and gutters.
  • Heavy icicles may fall and cause injury.
  • Standing water can leak through interior walls onto furnishings.

Roof-Commercial.jpg RAYCHEM self-regulating snow melting systems thaw snow and ice, providing a path for meltwater to drain safely off the roof, along the gutter and down the drain pipe.

RAYCHEM systems, are suitable and necessary for all types of buildings including residential and commercial, public and historical buildings.

The system can be used for:

  • gutters
  • drain pipes
  • critical roof edges
  • syphonic roof drainage systems on flat roofs.
How does the snow melting system work?
  1. Sensors detect both low temperature and humidity,
  2. The control unit switches the system on.
  3. The self-regulating heating cable will start melting snow and create a flow path in the gutter or on the roof. It then assures the continuous flow of water into the drain and avoids ice or snow build-up or icicle formation.
  4. When the air temperature rises above set-point or moisture is lower than set-point, the system switches off.

guttersystem.jpg

Four reasons to choose a nVent RAYCHEM system

1. Intelligent self-regulating heating cables save energy

Conventional cable provides a constant power, irrespective of temperature. Self-regulating heating cable automatically increases heat output in icy water and decreases heat output in dry air.

2. Safe and practical to install

RAYCHEM self-regulating roof deicing cable has a UV-resistant, modified-polyolefin outer jacket that ensures a long life - even when exposed to all weather conditions.  Simple-to-install roof heat tape is also available for deicing roofs. Cable and tape can be cut-to-length and closely spaced in gutters without risk of overheating or burn-outs.

3. Cut installation time with fast connection systems

Making power or T-connections is easy. The RayClic connection system cuts installation time by 80% -  inserting the stripped cable into the module and tightening two screws is all it takes.

4. Economical to operate

RAYCHEM systems only switch on when the sensors of the EMDR-10 control unit detect low temperature and moisture, reducing energy usage and costs. When there is no moisture, there is no snow. The heating cable is deactivated when air temperature is very low (no melting) or when it rises above the set value, or when there is no moisture

How does the system work?
  1. Sensors detect both low temperature and humidity
  2. The control unit switches the system on
  3. The heating cable starts melting snow, creating a flow path in the gutter or roof. It assures the continuous flow of water into the drain and prevents ice or snow build-up or icicle formation
  4. When the air temperature rises above set-point or moisture is lower than set-point, the system switches off.

Self-Regulating


How do self-regulating heating cables save energy?

While a conventional cable provides a constant power output, self-regulating heating cable automatically increases its heat output in icy water and decreases its output in dry air.


nVent RAYCHEM pioneers combined temperature- and moisture sensor

Key Challenges

In the summer of 1986, 300m of gutter snow melting cable was installed at CKW Ruopigen (Switzerland). As well as guaranteeing roof snow melt, the client’s objective was to accurately determine the operating cost of the system.

Solution

The installation was divided in two systems, each with a different control method. One system operated with temperature sensing only; the other with temperature and moisture sensing. Temperatures and power consumption were measured during four months.

Products

GM-2X snow melting cable

Benefits

Electricity consumption dropped by 78% when the system was operated using temperature and moisture sensing, compared to temperature sensing only.

Related Products

Connection and Protection