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Electrical Ports
Figure 2-7 Electric control box layout
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(1) Current transformers |
(2) Standby power switch QF2 |
(3) Active power switch QF1 |
(4) Dual power supply switchover contactor KM2 |
(5) Dual power supply switchover contactor KM1 |
(6) Intermediate contactor KM3 |
(7) Fuse |
(8) Filter board |
(9) Electric heater contactor KM5 |
(10) Electric heater switch QF7 |
(11) Electric heater contactor KM4 |
(12) Water valve actuator wiring terminal |
(13) Fan switch QF3 |
(14) Fan switch QF4 |
(15) Fan switch QF5 |
(16) Fan switch QF6 |
(17) SPD and voltage detection board |
(18) Fan drive address board |
(19) Main control board |
(20) AC/DC auxiliary power supply unit (PSU) |
(21) Fan drive |