2.
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 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
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.
(Return air temperature control by remote controller setting)
Main application target – Room temperature conditioning
Outdoor unit
TF type
: The discharge temperature is set by the remote controller to control the capacity.
Main application target – Ventilation
Outdoor unit
Dx-coil controller
Remote
controller
Dx-valve kit
Dx-coil controller
Remote
controller
Dx-valve kit
TA
TCJ
TC2
TA
TCJ
TC2
TC1
– 7 –
AHU
TC1
AHU
TF