Daikin VRV IV W+ Series Installer And User Reference Manual

Also see for RWEYQ10T9Y1B: Installer and user guide Installation and operation manual Installation and operation manual

19 | Electrical installationInstaller and user reference guide110RWEYQ8~14T9Y1BVRV IV water-cooled system air conditioner4P452191-1B – 2020.10In case of heat pump systemF1 F1F2 F2 Q1 Q2TO IN/D UNIT TO OUT/D UNIT TO MULTI UNITF1 F2 F1 F2 F1 F2F1 F2 F1 F2 F1 F2F1 F2 F1 F2 Q1 Q2 Q1 Q2A1PeQ1 Q2ahigfcb de fa Outdoor unit PCB (A1P)b Unit A (master outdoor unit)c Unit B (slave outdoor unit)d Unit C (slave outdoor unit)e Outdoor unit/other system transmission (F1/F2)f Outdoor-outdoor unit transmission (Q1/Q2)g Indoor unith Use the conductor of sheathed wire (2 wire) (no polarity)i Terminal board (field supply)In case of heat recovery systemF1 F2 F1 F2 Q1 Q2F1 F1F2 F2 Q1Q2geTO IN/D UNIT TO OUT/D UNIT TO MULTI UNITA1PQ1 Q2A1PQ1 Q2A1Pa b cd fF1 F2 F1 F2 F1 F2 F1 F2TO IN/DUNIT TO OUT/DUNIT TO IN/DUNIT TO OUT/DUNITF1 F2 F1 F2 F1 F2 F1 F2F1 F2 F1 F2jiihhea Unit A (master outdoor unit)b Unit B (slave outdoor unit)c Unit C (slave outdoor unit)d Outdoor unit PCB (A1P)e Master/slave transmission (Q1/Q2)f Outdoor/indoor transmission (F1/F2)g Outdoor unit/other system transmission (F1/F2)h BS uniti Indoor unitj Cooling-only VRV indoor unit / Heating-only Hydrobox unit▪ The interconnecting wiring between the outdoor units in the same piping systemmust be connected to the Q1/Q2 (Out Multi) terminals. Connecting the wires tothe F1/F2 terminals results in system malfunction.▪ The wiring for the other systems must be connected to the F1/F2 (Out-Out)terminals of the PCB in the outdoor unit to which the interconnecting wiring forthe indoor units is connected.▪ The base unit is the outdoor unit to which the interconnecting wiring for theindoor units is connected.