Sanyo CMH3172 Service Manual - Page 87

Regulations on wire size differ from locality to locality. For field wiring requirements, please refer to your local electrical codes. Make sure that the installation fully complies with all local and national regulations. (1) Remove access panel "C". (Fig. 32) (2) Connect the inter-unit and power supply line according to the drawing on the panel side. (3) Be sure to size each wire allowing approx. 4" (10 cm) longer than the required length for wiring. Store excess wiring inside the cabinet. (4) When connections are completed, check that all connections are correct as shown in the wiring system diagram on panel side. (5) Be sure to ground the unit according to your local codes. 6. Test Run Performing a test run G Refer to the test run procedures in the indoor unit installation manual. G Perform the test run separately for each connected indoor unit. If 2 units are operated simultaneously, it is not possible to correctly check for errors in tubing and wiring. Checking tubing and wiring Perform the test run and check that operation is normal. If there is an error in tubing or wiring, the refrigerant may flow to indoor unit B when indoor unit A is operated (for example). CAUTION G Stop operation immediately if there is an error in tubing or wiring. Turn the power (breaker) to OFF, and check whether the inter-unit cables are connected incorrectly, or whether the narrow tubes A and B are connected in reverse. Correct the connections. G If there is an error in tubing, pump-down must be performed. Be sure to perform pump-down. After making corrections, again purge the air from the tubes. Lock nut Cabinet Terminal block Conduit plate Plug Access panel "C" Inter unit (Conduit) Power supply (Conduit) Fig. 32 Access panel C Conduit plate CAUTION Make sure there is no gap between access panel "C" and the conduit plate. Fig. 33 25