Haier AU252CHAAA [12/19] Installajjonjjrocedure c onnection of pipes

InstallaJjonjjrocedure C onnection of pipes IV Vacuuminns of the pipes and indoor unit using vacuum pump to vacuumi c it fat strictly forbidden to use refrigerant purging Choose of vacuum pump it sluill clioosc those lint can reach a good vacmly Loner 2 X Pa tit d has e a large air discharge amount over JOUniin After finishing lite airtight quality test and dlscltatgtng the nitrogen connect the instrumental du oner to the wav discharge vah c then connect the v acuutn pump according to the below figure If the lu pressurc valve of the outdoor unit is way valve Indoor UIUI When the hr pressure vah e of the outdoor mut is 2 way valve When the In pressure v alvc of Ute outdoor unit is 2 way v ah e 111 Firstly connect indoor outdoor power supplies and communication lines then set addresses of indoor units and check their correctness 21 Determine tunning mode according to indoor temperature Set to cooling mode when indoor temperature Ta 23 V set to healing mode when Ta 23 C 131 Keep stop vah c of outdoor unit close and start the indoor unit according to running mode determined by indoor temperature II

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