Installation Guide for Danfoss ECiceguard 18 Readymade Heating Cable

Quick guide from the manual

The Danfoss ECiceguard 18 Readymade is a self-limiting heating cable designed for ice and snow melting on roofs, gutters, and downpipes. This document provides essential installation and safety guidelines. Always ensure the system is installed by an authorized electrician in accordance with local regulations. Key safety requirements include the use of a Residual Current Device (RCD) with a maximum trip rating of 30 mA and proper earthing of the cable screen.

Product description

ECiceguard 18 is a self-limiting cable featuring a temperature-dependent resistant element between two parallel copper conductors. As the ambient temperature rises, the resistance value increases, causing the current to decline and reducing the heating effect. This self-limiting capability prevents overheating, even if cables touch or cross. It is recommended to use a thermostat to disconnect the mains when heating is not required to save energy.

Technical specifications

• Application: Roof, gutters, downpipes
• Voltage: 230 V
• Effect: 18 W/m at 10°C (approx. 36 W/m in ice)
• Dimensions: 11.3 x 5.8 mm
• Min. installation temperature: -50°C
• Min. start-up temperature: -40°C
• Max. temperature ON/OFF: 65/85°C
• Cold-lead length: 5 m, 2 x 1.5 mm2, screened

General installation instructions

Before beginning the installation, ensure all necessary materials are present and the site is prepared. Follow these critical steps:

• Measure the insulating resistance of the heating cable immediately before and after installation.
• Remove any sharp objects or irregularities on the pipe system to prevent cable damage.
• Ensure finished or painted pipes are completely dry before installation.
• The bending diameter must not be less than 50 mm; bend only on the flat side.
• Protect the cable against excess strain and tension.
• The presence of a heating cable must be made evident by caution signs in the fuse box, distribution board, or at power connection fittings.

Frost protection of roofs

For effective ice and snow melting, follow these installation guidelines:

• Spacing: Typically, install cables with a C-C distance of approximately 15 cm. Use spacing clips to maintain this distance.
• Roof Slope: For low-slope roofs, installation in the gutter and downpipe is often sufficient. For high-slope roofs, install the cable on the lowest section of the roof.
• Valleys: Mount the cable in the valley, ensuring the C-C distance does not exceed 15 cm.
• Downpipes: If the cable length in the pipe exceeds 25 cm, use relief measures. The cable should continue to frost-proof depth under the ground surface (approx. 1 m).
• Pattern: Cables on the roof must be positioned upwards/downwards, not along the roof. A zigzag pattern is recommended.

Regulation and thermostats

To optimize energy consumption, Danfoss recommends using electronic thermostats. Compatible models include ECtemp 316, 330, 610, and 850. These thermostats provide effective regulation based on temperature and/or moisture conditions.

Storage and maintenance

Store heating cables and connecting leads in a clean, dry place. Avoid contact with chemicals and petrochemical products. Do not expose cables to mechanical strain. Storage temperatures must remain between -40°C and +60°C. If stored in moist rooms or at building sites, protect the cables against moisture.