1. OVERVIEW
VRF Dx-coil interface is the product that is used with connecting the AHU with the DX COIL prepared on-site to
the Toshiba Carrier VRF outdoor unit.
*1. DX COIL: Abbreviation of the Direct expansion coil (heat exchanger).
*2. DDC: Abbreviation of the Direct Digital Controller.
*3. AHU: Abbreviation of the Air Handling Unit.
For the installation of the air handling unit, refer to the installation manual of the air handling unit.
• Dx-coil interface (DDC type use for Supply air temperature or TF type) cannot control the room temperature.
Example of the system configuration
TF type
: The discharge temperature is set by the remote controller to control the capacity.
Main application target – Ventilation
VRF Dx-coil interface can connect to SMMS-u, SMMS-e and SHRM-e
In one cycle the outdoor unit and Dx-coil interface shall be one each for the structure.
For the AHU prepared on-site, please design with referring to submittal of AHU.
TA type
: Enables to connect 3rd party indoor unit or air handing unit as one of VRF indoor unit.
Dx-coil controller
Outdoor unit
Remote
controller
DX-Valve kit
AHU
TC2
TA
TCJ
TC1
Dx-coil controller
Outdoor unit
Remote
controller
DX-Valve kit
AHU
TC2
TA
TCJ
TC1
TF
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