7. Electrical installation
Installer reference guide / Mono tank integrated type 77
7.1 Precaution ................................................................................................................................78
• Precautions when connecting the electrical wiring ......................................................................................................................78
• Electrical wiring diagram ........................................................................................................................................................................79
• About correct grounding ........................................................................................................................................................................ 80
7.2 Outdoor unit's wiring .............................................................................................................83
• Power and communication cable configuration ............................................................................................................................84
• Specification of the protection tube ...................................................................................................................................................84
• Specification of the power supply and communication cable ................................................................................................... 85
• To connect power supply ........................................................................................................................................................................86
• To connect the communication cable ................................................................................................................................................89
7.3 Indoor unit's wiring ................................................................................................................ 91
• Indoor unit control panel and connecting terminal block ...........................................................................................................91
• To connect the wired remote controller ............................................................................................................................................ 94
• To connect Wi-Fi kit ...................................................................................................................................................................................97
• Screw sizes and torque specifications of the terminal blocks .................................................................................................100
• Control box .................................................................................................................................................................................................101
• To connect the main power supply ....................................................................................................................................................101
• To connect the communication cable .............................................................................................................................................. 104
• To expend the backup heater capacity ............................................................................................................................................ 105
• To connect the mixing valve (B2/B3/B5) .........................................................................................................................................110
• Temperature sensor installation .........................................................................................................................................................112
• To connect the backup boiler (B4/B5) ..............................................................................................................................................113
• Additional pump (B7/B8) .......................................................................................................................................................................114
• To connect 2WAY VALVES (B9/B10/B11/B12/B13/B14) ..............................................................................................................115
• The built-in 3WAY VALVE (B15/B16/B17/B18) ................................................................................................................................116
• To connect external inputs for zone control via thermostats (B19/B20/B21/B22/B23/B24) ........................................ 117
• To connect external sensors ................................................................................................................................................................118
• To connect smart grid ............................................................................................................................................................................119
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