Sanyo CMH3172 Service Manual - Page 84

WARNING G Be sure to comply with local codes on running the wire from the indoor unit to the outdoor unit (size of wire and wiring method, etc.). G Each wire must be firmly connected. G No wire should be allowed to touch refrigerant tubing, the compressor, or any moving part. G Be sure to connect power wires correctly match- ing up numbers on terminals of the outdoor unit and respective indoor units A - D. CAUTION WARNING G To avoid the risk of electric shock, each air conditioner unit must be grounded. G For the installation of a grounding device, please observe local electrical codes. G Grounding is necessary, especially for units using inverter circuits, in order to release charged electricity and electrical noise caused by high tension. Otherwise, electrical shock may occur. G Place a dedicated ground more than 7' (2 m) away from other grounds and do not have it shared with other electric appliances. G Be sure to connect the power supply line to the outdoor unit as shown in the wiring diagram. The indoor unit draws its power from the outdoor unit. G Do not run wiring for antenna, signal, or power lines of television, radio, stereo, telephone, security system, or intercom any closer than 3'4" (1 m) from the power cable and wires between the indoor and outdoor units. Electrical noise may affect the operation. 5-3. Wiring System Diagram * NOTE Disconnect switch may be required by national or local codes. CAUTION Always comply with national and local code requirements. 3 indoor units with CM1972/CLM1972 4 indoor units with CM2472/CLM2472, CM3172/CLM3172 L1 Power supply L2 Single-phase 230/208VAC 60HZ Grounding line * Disconnect switch Field supply INDOOR UNIT Terminal 1 230/208V OUTDOOR UNIT UNIT A 2 (A) 3 230/208V 230/208V (C) Terminal(9P) (B) 1 2 Grounding * line Disconnect switch Field supply (B) 3 1 230/208V (B) 4 UNIT B INDOOR UNIT Terminal 2 230/208V 5 (B) 3 230/208V 6 (C) (B) UNIT C INDOOR UNIT Terminal Grounding * Disconnect switch Field supply line 230/208V 7 1 (B) 230/208V 8 9 2 (C) 3 230/208V (B) (C) Grounding line Terminal 1 (2P) 2 (A) Fig. 25a L1 Power supply L2 Single-phase 230/208VAC 60HZ Grounding line * Disconnect switch Field supply INDOOR UNIT Terminal 1 230/208V OUTDOOR UNIT (A) 2 (C) 3 230/208V Terminal(12P) (B) 230/208V 1 Grounding line 2 UNIT A * Disconnect switch (B) 3 Field supply 1 (B) 2 230/208V 4 (B) (C) 3 230/208V 5 UNIT B INDOOR UNIT Terminal 230/208V (B) 6 Grounding line * Disconnect switch (Inter-unit) Field supply power line (B) 1 230/208V 7 UNIT C (C) 2 230/208V (C) 8 3 230/208V (B) 9 INDOOR UNIT Terminal UNIT D Grounding line 230/208V 10 * Disconnect switch Field supply 11 (B) 1 12 INDOOR UNIT Terminal Terminal (2P) 2 230/208V (D) 3 230/208V (C) 1 Grounding (B) 2 line (A) Fig. 25b 22