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EN
2.
Overview
VRF DX COIL INTERFACE is the product that is used with connecting the AHU prepared on-site to the TOSHIBA VRF
outdoor unit.
*1. DX COIL: Abbreviation of the Direct expansion coil (heat exchanger).
*2. AHU: Abbreviation of the Air Handling Unit
For the system design and the cautions, refer to the Dx-coil controller Installation Manual.
Example of the system configuration
TC2
TA
TCJ
TC1
Outdoor unit
Gas pipe
Liquid pipe
Dx-valve
kit
Dx-coil
controller
Remote
controller
Air Handling Unit
(Field supply)
TA control type
Gas pipe
Liquid pipe
TC2
TA
TCJ
TC1
Dx-valve
kit
Dx-coil
controller
DDC
Outdoor unit
Remote
controller
0 -
1
0 V
Digital I/O
Communication line
PMV control
TDF
TA
䠖
Suction air temperature sensor
TCJ, TC1, TC2
䠖
Evaporator temperature sensor
Field
supply
TDF
䠖
AHU discharge air
temperature sensor for
control (For example)
Maker
supply
Air Handling Unit
DDC control type
4-EN
