Daikin DKN Plus Interface - AZAI6WSPDKC
The DKN Plus Interface enables the energy-efficient control of Daikin air conditioners by a third-party thermostat or an automation system. With this interface, third-party devices or systems can control the VRV, SkyAir, and Daikin Single/Multi-Zone indoor units through Cloud API, Modbus, BACnet™ MS/TP, or thermostat relay contacts. This interface can be commissioned with ease through the DKN Cloud North America (NA) app via Bluetooth Low Energy (BLE).
Model Compatibility:
| Indoor Unit Family |
Model Number | Type |
| VRV and VRV LIFE |
CXTQ, FXAQ, FXDQ, FXEQ, FXFQ, FXHQ, FXLQ, FXMQ, FXNQ, FXSQ, FXTQ, FXUQ, FXZQ |
P1P2 |
| SkyAir | FAQ, FBQ, FTQ, FCQ, FHQ |
P1P2 |
| Single-Zone and Multi-Zone |
FDMQ, FFQ |
P1P2 |
| Single-Zone and Multi-Zone |
CDXS, CTXS*, FDXS, FTK*, FTKB*, FTX*, FTXB* FTXG, FTXR, FTXS, FVXS, FTXM | S21 |
*FTK_AXVJU, FTKB_AXVJU, FTX_AXVJU, FTXB_AXVJU and CTX_AXVJU units are not compatible.
The following indoor units do not have the S21 connection and require an additional interface adaptor (ordered separately) to
provide the S21 connector:
| Indoor Unit Models | Required Interface Adaptor |
| FTX09NMVJU(A), FTX12NMVJU(A), FTX09WVJU9, FTX12WVJU9 | KRP067A41E |
| FTX15NMVJU(A), FTX15WVJU9 | KRP980B2E |
| FTXM09VVJU, FTXM12VVJU, FTXM18VVJU, FTXM24VVJU, FTXM09WVJU9, FTXM12WVJU9, FTXM18WVJU9, FTXM24WVJU9 | KER087A41 |
Features:
Versatile interface that can integrate with smart thermostat through multiple approaches:
- Cloud API (Honeywell Home App/Cloud – Ecobee App/Cloud – Nest App/Cloud)
- Local API (integration to Daikin Color Touch (DT4272C) with firmware v4.05 - Premium Mini (D2270C) “Future”
- Modbus RTU
- BACnet MS/TP
3rd party thermostat G/Y/W (Fan/Cool/Heat) relay control through thermostat wiring
- Automatically disables thermostat relay logic when cloud API connection detected.
- Custom control logic applied to minimize the loss of the indoor unit efficiency when no cloud API, BACnet or Modbus connection detected
- Compatible Daikin thermostats: App Stat 250803400 – Value Series (TSTATD1100-2 or TSTATD1152-2) – Premium series (D4271C) – Premium Mini (D2270C) – Color Touch (DT4272C)
Easy commissioning with Bluetooth configuration App (DKN Cloud NA App)
Indoor unit control and monitoring points (for integration through cloud, Modbus, and BACnet MS/TP only)
- On/Off – Setpoint - Room temperature - Mode (Auto, Cool, Heat, Fan, Dry) - Fan speed - Louver position - Error code
Indoor unit force off by interlock control through digital input dry contact.
Controls auxiliary heater with dry contact as a secondary heat source:
- Turn on and off the auxiliary heater based on the differential (configured in App) between the setpoint and the room temperature
- Enable/Disable the auxiliary heater based on outdoor temperature (S21 IDU only)
- The user can enable the emergency heat mode from the DKN App
- If the indoor unit has an error, the user can enable the emergency heater from the app.
Integration to home automation systems through software drivers
- Crestron
- Control4
- RTI Control
- Fibaro
Modbus RTU and BACnet MS/TP Integration
- The following points are available:

** The room temperature is writable for P1P2 indoor units only and read only for S21 indoor units.
Specifications:
| Brand | Daikin |
| Model | AZAI6WSPDKC |
| Description | DKN Plus Interface |
| Maximum connections | 1 for each S21/P1P2 indoor unit |
| Wiring |
|
| Modbus RTU / BACnet MSTP communication baud rate | 9600, 19200, 38400, 57600, 76800, 115200 bps (Default: 38400) |
| Power supply |
|
|
Contact Rating |
|
| Dimensions | 3.62 in x 3.15 in x 1.14 in / 92mm x 80 mm x 29 mm |
| Weight | 3.24 oz / 92g |
| Storage temperature | -4°F to 158°F |
| Operation temperature | 32°F to 113°F |
| Compliance |
|
| Resources |
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