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Surface Snow Melting
Description

The Raychem ground heating solution prevents snow and ice formation which can present a major problem causing accidents and delays.

The Raychem range of products has been specifically designed to meet the requirements of commercial, industrial, and residential applications. Whether installed into concrete, sand, or asphalt, a Raychem system exists to provide a fast, reliable and easy install solution.

Each Raychem heating solution is complete with a Smart control and monitoring unit, providing useful user data and excellent energy efficient performance. The multi-sensor control and monitoring device (VIA-DU-20) is compatible with all ramp snow melting solutions. Approvals: VDE and CE marked.

System components:

  • Self-regulating ramp heating cable.
  • Pre-terminated, constant power MI heating cable.
  • Pre-terminated, constant power heating mat.
  • Single circuit, single application energy efficient controller.
  • Multi circuit, single application control panel with integrated energy efficient controller.
  • Multi circuit, multi-application distributed control and monitoring system with integrated energy efficient controller.

Specification data

Product Reference

Surface Snow Melting

Heating cable/ mat

EM2-XR

Self-regulating, rugged ramp heating cable for ramps, walkways and fire escape stairs.

EM2-MI

Mineral insulated, highly temperature resistant ramp heating cable for asphalt.

EM4-CW

400 V pre-terminated constant wattage heating cable solution for larger concrete areas and stairs.

EM2-CM-MAT

Pre-terminated constant wattage heating mat for ramp, pavement and track heating.

Energy efficient controls

-

Single circuit, single application energy efficient controller

RAYCHEM VIA-DU-20

Control and monitoring, with three way sensor control logic.

Multi circuit, single application control panel with integrated energy efficient controller

See 'Options' and insert requirements.

Standard product features

Voltage rating:

230 VAC, except for EM4-CW which is 400 VAC.

Electrical connection:

  • Connections between the electrical supply, control panel and trace heating circuits shall be installed by an approved electrical contractor.
  • Circuit breaker protection required by MCB (BS EN 60898 type C or D). Residual current device required, RCD (30 mA sensitivity, tripping within 100 ms). Maximum approximately 500 m of self-regulating heating cable can be monitored per RCD.

Installation:

All pipe freeze protection cables shall be installed in accordance with the design plans, within the defined maximum circuit lengths, tested and commissioned strictly in accordance with the manufacturer’s instructions (IM-CDE1547) using a 2500 Vdc megger. Installation of thermal insulation shall be closely coordinated with the responsible sub-contractors.

Nominal power output:

  • EM2-XR: 90 W/m at 0°C.
  • EM2-MI: 50 W/m.
  • EM4-CW: 25 W/m.
  • EM2-CM-MAT: 300 W/m².

Maximum temperature exposure:

  • EM2-XR: 100°C.
  • EM2-MI: 250°C.
  • EM4-CW: 65°C.
  • EM2-CM-MAT: 65°C.

Cold leads:

  • EM2-XR: Not as standard. Contact Pentair for information on Configured EM2-XR heating elements.
  • EM2-MI: 3 m (at each end of heater cable).
  • EM4-CW: 4 m.
  • EM2-CM-MAT: 4 m.

Wire construction:

Dual wire construction, except for EM2-MI which is single construction.

Product Options

Heating cable:

- EM2-XR:

Extremely robust self-regulating heating cable for flexible installation under severe site conditions. Maximum circuit length: 85 m. Cut-to-length cable for flexibility. Highly recommended for installation on reinforcement bar or embedding in sand sub-level.

- EM2-MI:

Pre-terminated heating cable with exceptional resistance to high temperature asphalt surfaces. Maximum circuit length: 136 m. Suitable for installation on reinforcement bar, direct contact with hot poured asphalt or embedding in sand sub-level.

- EM4-CW:

Pre-terminated constant power heating cable for larger areas and 400 V power supplies. Maximum circuit length: 250 m. Suitable for installation on reinforcement bar and highly recommended for embedding in sand sub-level.

- EM2-CM-MAT:

Pre-terminated ramp, walkway, and track heating (roll-out) mat for fast and simple installation. Maximum circuit length: 12.6 m² (Mat size: 21 x 0.60 m). Highly recommended for embedding in sand sub-level.

Control panel:

Control panel with RCD (30 mA), circuit breaker (C characteristics), mains contactor for VIA-DU 20 control unit.

Multi circuit, single application control panel with integrated energy efficient controller:

- For EM2-XR:

  • SBS-03-VV-20 (up to 3 circuits).
  • SBS-06-VV-20 (up to 6 circuits).
  • SBS-09-VV-20 (up to 9 circuits).
  • SBS-12-VV-20 (up to 12 circuits).

With Integrated Control Unit: RAYCHEM VIA-DU-20.

- For EM2-MI:

  • SBS-03-MV-20 (up to 3 circuits).
  • SBS-06-MV-20 (up to 6 circuits).
  • SBS-09-MV-20 (up to 9 circuits).
  • SBS-12-MV-20 (up to 12 circuits).
  • SBS-15-MV-20 (up to 15 circuits).
  • SBS-18-MV-20 (up to 18 circuits).

With Integrated Control Unit: RAYCHEM VIA-DU-20.

- For EM4-CW:

  • SBS-03-CW-40 (up to 3 circuits).
  • SBS-06-CW-40 (up to 6 circuits).
  • SBS-09-CW-40 (up to 9 circuits).
  • SBS-12-CW-40 (up to 12 circuits).
  • SBS-15-CW-40 (up to 15 circuits).
  • SBS-18-CW-40 (up to 18 circuits).

With Integrated Control Unit: RAYCHEM VIA-DU-20.

- For EM2-CM-MAT:

  • SBS-03-CM-20 (up to 3 circuits).
  • SBS-06-CM-20 (up to 6 circuits).
  • SBS-09-CM-20 (up to 9 circuits).
  • SBS-12-CM-20 (up to 12 circuits).
  • SBS-15-CM-20 (up to 15 circuits).
  • SBS-18-CM-20 (up to 18 circuits).

With Integrated Control Unit: RAYCHEM VIA-DU-20.

Third party certifications
  • CE marked : Applies to surface snow melting cables, controls and system components.
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