Hisense HZX-4.0AEC Operation Installation Maintenance Manual page 16

C A U T I O N
For duty signal control, the compatible outdoor units are only G, M, R, X, C series. Only single combination
with AHU is allowed.
The optional setting item E1 must be set as 02 in optional setting of the unit by remote controller. Referring to
Optional Setting and Input/Output Setting (chapter 6.3) .
As for the type of duty signal,Set the optional setting item E4 as following.
E4: 00(factory setting):0-10V
E4: 01(set by remote controller):0-5V
E4: 02(set by remote controller):4-20mA
Referring to Optional Setting and Input/Output Setting (chapter 6.3) .
The optional setting item of outdoor unit
of outdoor unit from outdoor unit PCB. Referring to OPTIONAL FUNCTION of outdoor unit service manual.
The optional setting item of outdoor unit F2 must be set as 1 for C series in optional function setting of
outdoor unit from outdoor unit PCB. Referring to OPTIONAL FUNCTION of outdoor unit service manual.
The AHU Connection Kit will respond to the duty signal only after the unit is switched on by remote controller,
central controller or Remote Control ON/OFF Function (Referring to Optional Setting and Input/Output Setting
(chapter 6.3)).
For duty signal control, the system configuration refers to System Overview(chapter 2.1) except the inlet
air thermistor is not required.
The performance may not reach due to outside temperature limitation and protection for outdoor units.
The capacity of outdoor unit is controlled by its own control system instead of by external duty signal during
start running , defrosting ,restart running after defrosting.
For outdoor unit of C series the capacity of outdoor unit will respond to the duty signal with some delay
due to protection for outdoor units .
(4) Multi Connection application for one large capacity AHU
Combine multi AHU Connection Kits with same capacity and responding heat exchangers of one AHU in
one refrigerant cycle.
All AHU heat exchangers with same capacity and running condition belonging to one refrigerant cycle have to
be installed in the same chassis equipped with one single fan motor.
For each AHU Connection Kit, the system configuration is referring to System Overview(chapter 2.1).
All AHU Connection Kits have to be wired to the fan motor as following figure.
All AHU Connection Kits shall be connected and controlled by group with one remote controller.
The optional setting shall aplly to all AHU Connection Kits by one remote controller,referring to Optional
Setting and Input / Output Setting by Remote controller (chapter 6.1) .
A current signal (4~20 mA) of duty signal control is unavailable when multi connection application.
A free-voltage(0~10V or 0~5V) of duty signal control is available and DSW1 of PCB2 in control box shall be
turn off when multi connection application, referring to Setting of Dip Switches (chapter 7).
V/A,G ND
i1,COM
i2,COM
V/A,G ND
i1,COM
i2,COM
4
must be set as 2 for G, M, R, X series in optional function setting
Remote Control
ON/OFF Function
Cooling or H eating
Operation Mode Setting
DDC(0-10V or 0-5 V)
Remote Controller
Branch Pipe
Referring to Optional
Setting and Input/Output
Setting (chapter 6.3) .
wire to the fan motor
Control
Box 1
Fan
Control
Fan
Control
Control
Box 2
NOTICE
1.The Branch Pipe and the refrigerant pipe should be selected
*
according to the total capacity of the heat exchangers.
Refer to the manual of outdoor units for details.
2.The pipe connecting with the Expansion Valve Box should
*
coincide with the Expansion Valve Box.