BILL OF MATERIAL
L                                                                                                                                                      +                                   1) 6A Fuse
                                                                                                                                                                          F2
                                                                                                                                                                                           2) 2A Fuse
                1
                                                                                                                                                                        2A Fuse
                    2
                          F1
                        6A Fuse                                                                                                                                                            3) 220V AC Contactor
               13                                                                                            K2
                                                                                                                                                                                           4) Push button ON
               14
                          S1
                        Selector
                                                        if Auto mode
                                                                                                   L                  N
                                                                                                                                                                 3
                                                                                                                                                                                           5) Push button OFF
                         Switch                            selected
           Manual                                                                                                                                                         K1
                                                                                                   1a                 1b                                              Contactor 3P
                                                                                                   2a
                                                                                                            Out 1
                                                                                                                      2b
                                                                                                                                                                 4
                                                                                                                                                                                           6) 2Way Stay put selector switch
                                                                                                            Out 2
    220V       11
                           S1
                          Manual
                                                                           1a
                                                                                                   3a
                                                                                                           Alarm 1
                                                                                                                      3b
                                                                                                                                                           24V                             7) 24V SMPS
                                                                       Out 1                       4a                 4b      24V   0V
                                                                                                                                                           DC
               12
     AC
                          Button                                                  K2                       Alarm 1
               13                      5
                                                                           1b   Temp. Controller
                                                                                                                          b              PE
                                                                                                                                                                                           8) PT 100 Thermocouple
                          S1                 K1                                                                                                G1
               14
                        Manual
                        Button
                                       6 Contactor 3P
                                                                                                                          B
                                                                                                                                L   N         Power
                                                                                                                                              Supply
                                                                                                                                                                                           9) Temperature controller
                                                                                                                          A
                                                                                                       Temp. Controller
                                                                                                                                                                                          10) Solenoid coil 24V DC
                                                                                                                                                                 A1
                                                                                                                                                                              Y1
                                                                                                                                                                         Solenoid Coil
                                                                                                                                                                 A2      for water line
                               1   3       5
               A1
                                                  K1
              A2                               Contactor
                               2   4       6      3P
N                                                                                                                                                      -