Panasonic PAW-160MAH2L Installation Instructions Manual page 31

Multi-connection system
Note:
The following restrictions apply only if PAW-560MAH2(L) is used alone or in combination with other AHU Kits. For all
other AHU Kits and AHU Kit combinations without PAW-560MAH2(L) no such restrictions apply.
1 All AHU heat exchangers belonging to the same refrigerant circuit have to be installed in the same chassis equipped
with one single fan motor.
2 One AHU Kit and correspondingly one magnetic relay is required for each heat exchanger. All AHU Kits have to be
wired to the fan motor.
3 All AHU Kits shall be connected and controlled by group control wiring of remote controller.
4 In case of a multiple AHU Kit combination within one refrigerant system, those kits must share the same AHU hous-
ing including fan, and they have to be "group-wired" and operate as a single group. In this case you have to discon-
nect the included remote controllers and CZ-CAPBC2 boards (ACC-SP1A PCB) except for one each. It is irrelevant
which one is retained, there is no preference. The external connections need to be done only on the unit with the
connected CZ-CAPBC2 board.
Note: In this particular case it is even possible to combine a single advanced or medium version with one, two or
three light versions, and still have full functions of the advanced or medium version respectively.
System example for ECOi multi-connection system (140 kW capacity)
ECOi outdoor units
16 HP 16 HP
Gas tube
Liquid tube
RC group wiring
PAW-280MAH2
PAW-560MAH2
18 HP
PAW-560MAH2
Outdoor unit / indoor unit communication
Product description
Fan operation signal
28 kW heat
exchanger
56 kW heat
exchanger
56 kW heat
exchanger
Air inlet temperature sensor
Air outlet temperature sensor
Fan
motor control
PCB
29