1. AHU connection kit

2. 1. What is AHU connection kit?
Chigo AHU connection kit is an interface to allow 3rd party manufacturer’s AHU connecting to Chigo VRF outdoor units.
Chigo VRF outdoor units can be used with this connection kit, creating an ideal solution when a unique AHU is required.
One AHU need at least one AHU kit.

3. 2. Kit configuration
AHU connection kit consist of control part, EXV part, temperature sensors and wired controller.
EXV part
Controller
AHU connection kit
Control part
Sensors and wires

4. 3. System schematic Chigo VRF outdoor unit Chigo VRF indoor unit
3rd party AHU

5. 4. System configuration Purchase in Supplied by Chigo the market
Outdoor
Chigo VRF
AHU connection kit
Control part
PCB
Power terminals
Communication terminals
EXV part
Outlet pipe
Inlet pipe
EXV
AHU
3rd party AHU
Control system
Wired R/C
Centralize R/C
Network control
BMS
Accessories wires
Wires:
1 controller wire
3 temperature sensor wires
Supplied by Chigo
Purchase in
the market

6. 4. System configuration Power supply Power supply P/Q/E T1/T2/T2B
Fan/pump
G/L pipe
Power supply

7. 5. Wiring terminals
Reserved fan, pump, water level switch control terminals for AHU.
ON/OFF, alarm signal output.
ON/OFF
Power
Fan
Pump
Alarm
Outdoor
Water level switch

8. 6. Control Control : Using Chigo wired controller (XCMV-03)
Set point can be fixed via standard wired controller.
The cooling load is determined by the air return temperature and set point on the wired controller.
T2b Ts T2 T1
Room
Wired controller
AHU connection Kit

9. 7. Two AHU kit connect to one AHU/IDUs
Piping System
AHU kit
IDU/AHU
ODU
AHU kit
Distributor
Distributor

10. Wiring Diagram Use a wire connect the AHU kit together (Customized)
Connect CN7/CN8 to another CN7/CN8
Use one wired controller control two AHU kit
AHU kit P QE P QE P QE
ODU
AHU kit
IDU/AHU

11. All the sensors must be attached to the corresponding position
Sensor Connection
AHU kit T1
T2 T2B
IDU/AHU T1
T2 T2B
AHU kit
All the sensors must be attached to the corresponding position

12. THANK YOU!