34
AHU Kit – Installation Instructions –
11/2021
Product description
3
System example for ECOi single-connection system
SET
AL1
OUT
ATU
PV
SV
ºC
ºC
ECOi outdoor unit
Piping
Outdoor unit / indoor unit wiring
Wiring for temperature sensors and
expansion valve
Air Handling Unit
PAW-280MAH2
Multi-connection system
Note
:
The following restrictions apply only if PAW-560MAH2(M/L) is used alone or in combination with other AHU Kits. For all
other AHU Kits and AHU Kit combinations without PAW-560MAH2(M/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 one remote controller.
4
In case of a multiple AHU Kit combination within one refrigerant system, those kits must share the same AHU housing
including fan, and they have to be “group-wired” and operate as a single group. In this case you have to disconnect the
included remote controllers and CZ-CAPBC2 boards (ACC-SP1A PCB) except one. 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.
Содержание PAW-280PAH3M-1
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