LG ARUB115BT2 Installation Manual - Page 44

Electrical Wiring Communication and Power Lines 1) Communication cable • Types : shielding wire CVVS or CPEVS • Use wires of size : over 1.25mm2 • Insulation material : PVC • Maximum allowable temperature: 140°F • Maximum allowable line length: under 300m(984ft) 2) Remote control cable • Types : 3-core cable 3) Simple central control cable • Types : 4-core cable (Shielding wire) • Use wires of size : over 0.75mm2 • Insulation material : PVC 4) Separation of communication and power lines • If communication and power lines are run alongside each other then there is a strong likelihood of operational faults developing due to interference in the signal wiring caused by electrostatic and electromagnetic coupling. The tables below indicates our recommendation as to appropriate spacing of communication and power lines where these are to be run side by side Current capacity of power line 10A 100V or more 50A 100A 100A or more Spacing 300mm(11-13/16 inch) 500mm(19-11/16 inch) 1,000mm(39-3/8 inch) 1,500mm(59-1/16 inch) Note: 1. The figures are based on assumed length of parallel cabling up to 100m(328ft). For length in excess of 100m(328ft) the figures will have to be recalculated in direct proportion to the additional length of line involved. 2. If the power supply waveform continues to exhibit some distortion the recommended spacing in the table should be increased. • If the lines are laid inside conduits then the following point must also be taken into account when grouping various lines together for introduction into the conduits • Power lines(including power supply to air conditioner) and signal lines must not be laid inside the same conduit • In the same way, when grouping the power lines and signal lines should not be bunched together. CAUTION I If apparatus is not properly earthed then there is always a risk of electric shocks, the earthing of the apparatus must be carried out by a qualified person. I Use a power wire pipe for the power wiring. 44 Outdoor Unit