Note the gutter snow melting heating cable installation:
The electric heating cable is converted to heat, sleeping in the gutter. Generally use double guide heating cable, to take the parallel laying: unit area laying heating cable power: 250 ~ 400W/m2 (220V), cable laying spacing: 50mm
Before the construction of gutter heating cable, first of all, we should confirm cable cold line reserved pipe, a temperature control device junction box, temperature sensor of indwelling, distribution box line pipe and reservation and pre embedded work has been completed. Laying in the region other professional hidden works have been completed, the site in accordance with closed independent construction conditions (the project should not be with other single project cross construction); water pipe and line pipe should be in advance on the ground grooving buried. Before the installation of the heating cable, the field professional technical personnel for the first time the detection of resistance and insulation, do a good job in the construction and installation of the record before the detection.
Gutter Heating cable laying: the heating cable is the heating element in the ground radiation snow melting system. Heating cable laying is also the most important part of the project. The heating cable in the construction, construction and construction after all have strict requirements. Must have professional installation and construction team to complete.
Heating cable Cold line and hotline between the part use a junction box are connected, in a damp environment, need of junction box filled with silica gel, ensure 100% waterproof insulation. The problem of the joint part of the whole heating cable is easy to occur. Heating cable cold hotline joint part of the junction box package, three wire cold hotline joint riveting, tin brush connection were hidden in between the three grooves, and then temperature insulating sealant filling solid, the joint part of a more solid and compressive.
Cold heating cable can harden should not be installed, can be connected to the heating cable timely. Also, the cable should not be installed in the construction environment below -5. Because of the cable bending is more difficult than -5, forced bending is bound to cause damage to the cable. According to the prior to the design of the heating cable arrangement from the power supply terminal to the heating cable heating period of uniform binding in stainless steel stent, heating cable can not cross overlap. Avoid focusing on the cable and the surface temperature of the uneven, and even may cause danger.
Heating cable installation, in order to prevent the process of installation in the process because of the complex field personnel and lead to cable damage, the field of professional and technical personnel for the second time self inspection, do a good job testing records.