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INITIAL SETTING
Plan B: Setting temperature by 0-10V signal.
Simple DDC Voltage Range(V)
0~1.0
1.1~1.7
1.8~2.3
2.4~2.9
3~3.5
3.6~4.1
4.2~4.7
4.8~5.3
5.4~5.9
6~6.5
6.6~7.1
7.2~7.7
7.8~8.3
8.4~8.9
9~10
a) If the DDC can provide 0-10V, mode and on/off signals to Haier AHU kit, the wired controller does not need to be
connected. If only 0-10V signal, the wired controller is necessary.
b) If Haier wired controller is connected into the system, the wired controller has the top priority. As a result, if the wired
controller is set into off status, signals from DDC to Haier AHU kit will be invalid. When the wired controller is turned on,
first to adjust operation mode and then the 3rd party AHU units can be controlled by 0-10V signal from DDC to Haier
AHU kit adjusting the outdoor unit capacity.
c) If the wired controller is connected, wired controller can directly control the 3rd party AHU fan motor. Or Haier AHU
kit PCB provides fan speed dry contact signal to DDC or to AHU unit PCB directly. If users want to use wired controller
to adjust fan speeds, set the wired controller according to AHU fan motor grades and max. 3 fan speeds can be
controllable.
d) Haier AHU kit can provide mode signal to DDC or AHU unit PCB directly to control the AHU unit, e.g. if the DDC or 3rd
party AHU unit PCB receives defrost signal from AHU kit, AHU fan motor will be controlled.
e) The maximum input range of voltage whitch is from DDC is 0-10v. If it exceeds 10V, input shall be 10V; if it is lower than
0V, input shall be 0V. The maximum input voltage shall not exceed 10V.
Plan C:
a) Haier wired controller is necessary.
b) The wired controller has the top priority. If the wired controller is off, the signal information from the 3rd party
thermostat to AHU kit will be invalid.
c) In this control method, it's necessary to set operation mode
d) In this control method, AHU kit can also output dry contact signal or strong electricity to control AHU fan motors
e) AHU kit can provide mode signal to DDC or AHU unit PCB directly to control the AHU unit, e.g. if the DDC or AHU unit
PCB receives defrost signal from AHU kit, AHU fan motor will be controlled.
Plan D: The wire controller specifically designed by Haier is needed.
a) Haier AHU kit controls 3rd party AHU units such as the on/off, temperature settings, fan speed adjustment and
operation mode etc.
b) Haier AHU kit can provide mode signal to DDC or AHU unit PCB directly to control the 3rd party AHU fan motor. It's
required to output either the dry contact or strong electricity signal.
31-5000593 Rev. 0
Set Temperature(°F)
Cool
Heat
60.8
60.8
62.6
62.6
64.4
64.4
66.2
66.2
68
68
69.8
69.8
71.6
71.6
73.4
73.4
75.2
75.2
77
77
78.8
78.8
80.6
80.6
82.4
82.4
84.2
84.2
86
86
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