Daikin BACNet / LonWorks Interface Review


From $125

Product highlights
  • Advanced features
  • Discrete design
  • Weekly Timer
Compare Air Conditioning Rating
Brand reliability score
Capacity (kW) of systems in this series

Key Features

High Capacity

This unit can be connected to up to 64 groups, depending on the number of control and monitoring functions used.

Reduced Wiring Costs

The ability to combine individual items of equipment into a network reduces the engineering time and costs required for wiring.


Systems are available for access control, energy management, fire/life, HVAC, lighting, and more.

User Friendly

Simple and direct connections make the setup quick and easy.


Features optional linked operations with other systems, including those such as crime and fire prevention.


Can add and monitor new units with dedicated interfaces that enhance control.


Front Panel Colour
Reverse Cycle
Indoor Type
Power Supply
Single phase AC 100 to 240V 50/60Hz
Manufacturer Warranty (Years)
5 years
Number of fan speeds

BACNet / LonWorks - Specifications

SpecificationInterface for use in BACnet® Interface for use in LONWORKS®
Model Number - Indoor UnitDMS502B51DMS504B51
Indoor unit Dimensions (HxWxD) (mm)263 x 275 x 81.5260 x 168 x 50

* C = Cooling H = Heating

Links and Documents

Operational manual and other product-related documents 

Controller features

  • Error Status Report
  • Remote Temperature Setting Control Rejection
  • Airflow rate and temperature setting
  • ON/OFF Command
  • System Forced OFF Setting
  • Alarm sign
  • Operation status

Other Features

  • Users can set up an open network
  • Flexible controls
  • Remote capabilities


Great Products

Have been using Daikin for nearly 20 years and they are the market leader in air conditioning.
Great products and great service

— David V, November 2017

Much better than other brands

Got this for our living room as the old air con for example used over 15kw in a day during summer last year and was way to much for a single room. This unit cut the cost down to about 2-8kw depending on settings and how hot or cold it is outside but still cut down cost heaps

— Rebecca, 28 August 2018

Cools well

Cools my 2 bedroom unit very well and also heats it satisfactorily but mainly only when on 25 degrees.

— JZ66, 16 August 2018

    Leave a message and we will contact you as soon as possible!

    Your phone number will not be used for marketing purposes