III
PMEN0645 rev.0 - 04/2023
II
GENERAL INDEX
6. Electrical and control sengs ..................................................................................33
6.1 General check ..................................................................................................34
6.2 Electrical connecon .......................................................................................35
6.2.1 Wiring size .............................................................................................35
6.2.2 Minimum requirements of the protecon devices ..............................37
6.3 Seng of DIP switches and RSW switches ......................................................38
6.3.2.1 Locaon of DIP switches and rotary switches .........................38
6.3.2.2 Funcon of DIP switches and rotary switches .........................38
6.3.2.3 LED indicaon ........................................................................... 42
6.4 Terminal board connecons ............................................................................ 43
6.4.1 Table board 1 .........................................................................................43
6.4.2 Table board 2 .........................................................................................44
6.4.2.1 Indoor/outdoor communicaon wiring (TB2) / ATW-RTU
Communicaon / Central Devices Communicaon ................44
6.4.2.2 Summary of terminal board connecons ................................45
6.4.2.3 Input terminals (Default input funcons) ................................47
7. Maintenance .............................................................................................................55
7.1 Removing the covers .......................................................................................56
7.1.0.1 Removing the indoor unit covers ............................................. 56
7.1.0.2 Removing indoor unit electrical box ........................................57
7.1.0.3 Space heang pipes connecon ..............................................58
7.1.0.4 DHW pipes connecon ............................................................58
7.1.0.5 Drain pipes connecon ............................................................59
7.1.1 Test and check .......................................................................................59
8. Commissioning .........................................................................................................60
8.1 Before operaon ..............................................................................................61
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