ELECTRIC SNOW MELTING SYSTEM TECHNICAL SPECIFICATIONS
1. The design and application of the heating cable or mattress system shall be made by taking into account human and material safety.
2. Snow drifting should be prevented on roofs with snow traps.
3. Snow accumulated there shall be melted by using a heating cable or mattress in front of the snow trap.
4. The heating cable or mattress to be used in roof gutters or roof overhangs shall be suitable for roof winter conditions, and this material shall be able to operate without problems under snow and ice.
5. The control panel containing snow/ice detectors and connection boxes shall be of appropriate protection class and resistant to ultraviolet rays. The materials to be used in the heating cable or mattress system shall be suitable for maintenance and repair in winter conditions and shall have been used in similar applications before.
6. The heating cable or mattress system shall be energized only in the event of icing risk, thus providing an economical operation and preventing overheating. Heating shall be performed with appropriate power considering the snowfall regime and minimum outside temperature conditions in the location where it will be applied.
7. There should be no risk of freezing in the flow paths of melting ice and snow water.
8. Snow/ice detector and outdoor thermostat sensor elements should be placed in a way that can evaluate melting and sun conditions. The materials used in the heating cable or mattress system should be guaranteed against all kinds of manufacturing, design and application errors.
9. During the application phase, application details will be submitted to the administration and approval will be obtained, and manufacturing will begin following approval. Heating cables or mattresses should be fixed to the rain gutter floor with silicone and suitable tapes resistant to high temperature and ultraviolet rays (adhesive aluminum tape and/or tape made of gutter coating material).
10. The heating cable or mattress system will be delivered to the administration in working condition after the operation tests are performed at the end of the assembly.
11. At the delivery of the heating cable or mattress system, all necessary technical information and maintenance, operating instructions and application projects will be delivered to the administration. The application of the heating cable or mattress system will be carried out under the supervision of the expert of the contractor company.
12. The connection of the heating cables or mattresses and the energy cables that feed them will be in the connection boxes on the roof. This connection will not be made in the open outside the box.
13. A 30w/m series resistance cable or a 300-350w/m2 heating mat produced for snow/ice melting applications will be used.
14. The heating cable resistance wires should be fluoropolymer insulated, metal braided and have a hologen-free outer jacket.
15. The cold cable at the end of the cable should be at least 5m.
16. The cables and mattresses will be under warranty for 12 (twelve) years. Cable damages that occur due to manufacturing and assembly errors will be replaced free of charge during this period.
17. The commitment regarding this situation will be delivered to the administration at the end of the work as a condition of the final acceptance of the work by the contractor company.
18. The snow/ice detector should be of a structure that will only energize the heating cable system in the event of icing risk and gradually.
19. The detector itself should be suitable for rail mounting within the panel. 20. The snow/ice detector should be able to be operated independently of the sensor elements for testing when necessary.
20. The snow/ice detector should be able to be operated independently of the sensor elements for testing when necessary.
21. The sensitivity of the humidity sensor element on the detector should be adjustable between 0 and 9. The detector panel should be of a type that can be placed outdoors when necessary. The detector humidity and temperature sensors should be separate and the outdoor thermostat sensor elements should be placed in a way that can evaluate the most adverse climatic conditions of the roof.
22. Regardless of the power of the heating cables to be fed from the panel, the heating cables will never be fed directly from the snow/ice detector. A power contactor with appropriate power must be used.
23. A leakage current switch with appropriate amperage and 30mA protection shall be provided at the panel entrance.
24. Panel inputs and outputs shall be terminals, and a terminal upper bridge shall be used when necessary.
25. If the roof structure is multi-part or the roof heater load is high, the heating cable load can be divided into more than one panel. During this process, instead of using more than one snow/ice detector, a control circuit shall be installed that will enable more than one power contactor to be driven from one detector.
26. Automatic Control Panel: Contains Ice Detector, Leakage Current Relay, Fuses, Contactor and other materials.
27. Ice Detector: LCD display, numerical and programmable, shows the set and currently measured values. It has a wide range of settings and options. The system will only be energized in the event of a risk of icing. The system will not consume energy unless necessary. Special relay equipment with ground or roof sensors continuously checks and shows the status on the screen. Thermostat control unit, one temperature and humidity sensor.
28. Connection boxes must have at least IP 65 protection class. The power cable and heating cable must be connected with suitable terminals in the box. If there is an energy cable exit from a connection box to another connection box, special terminals with suitable cross-sections of the manufacturer of the box must be used.
29. If a serial terminal is used in the box, the upper bridge of this terminal must definitely be used.
30. All heating cable and energy cable inputs and outputs to the box must be glanded.
31. As an additional safety precaution in the application, the sealing of the glands must be reinforced with high temperature silicone resistant to UV rays after the connections are made.
32. Connection boxes will be placed on the roof in a way that will not damage the roof waterproofing.