Case study:

HVAC integration in hotels
Solution:

Intesis AC interface for HITACHI to Modbus

Country:

Germany

Company:

Roomers Munich

Summary:
Room level integration of 280 AC units with a local		controller

Benefits

Reliable control of the AC units• Reliable integration of theAC system.

Roomers, a premium hotel chain selects Intesis AC interfaces
for the integration of HITACHI air conditioning units with theroom controller.

• Simple installation andfast commission.
• Enables comfort andenergy savings.

In a 5-star luxury hotel in Munich with 280 rooms and suites, the owner chose
Intesis AC interfaces for the integration of HITACHI air conditioning units to a local
room controller and with a third-party premium design thermostat.
Roomers was looking for a robust and reliable solution to meet their guests’ highexpectations (e.g. C-level business executives, air crews and professionals). It was
outmost important to ensure a fast commissioning since the hotel was alreadyin operation in order to have the rooms available in the shortest time possible.
Therefore, the simplicity of the installation was a key aspect for the tenant.

“For this project we needed thereliability of Intesis products
to ensure proper operation ofthe system. The approval of theproducts by HITACHI was a key
quality aspect”
Lior Golani, Managing Director at
Consyst Limited UK

Additionally, the seamless integrationof the HITACHI AC units with the room
controller to obtain the best possible
performance (i.e. low-noise operation andoptimal temperature control for maximumcomfort) was a strong prerequisite for thesolution they were looking for. Anotherimportant aspect was to ensure a fast
reaction time since their guests expect
the aircon unit to start working as soon as
they press the button.
Intesis individual AC interface for HITACHI
to Modbus was the perfect choicefor Roomers to fulfill all the projectrequirements.

“Intesis products
were the right choice
to meet the project
deadlines with minimal
disruption to the hotel
operations thanks
the fast and simple
installation process.”
Noam Sade, Project Manager
on behalf of Roomers

How it works:
Intesis Air Conditioning interfaces build up a portfolio of highly reliable gateways for HVAC integration, co-developed with all
major AC manufacturers, tested and validated by them.
The Hitachi to Modbus AC interface allows fully bi-directional communication between Hitachi VRF systems and Modbus RTU
networks, acting as a Modbus slave towards the room controller. It offers monitoring and control capabilities over the common
signals of the AC unit such as on/off, temperature setpoint, mode, fan speed and vane position, but it also offers access toadvanced internal parameters such as error codes and maintenance information.
Installation is simple on a DIN rail or even wall-mounted. Thanks to its reduced dimensions it takes few space on the electricalcabinet. No external power supply is required since the interface is powered by the AC unit directly. Easy configuration with DIPswitches or via Modbus registers if preferred.
Your best guarantee, more than 700,000 AC units integrated!

Intesis Air Conditioning Interfaces
Intesis offers high quality Air Conditioner interfaces for the integration of climate systems
into BACnet, KNX, Modbus and 2.4 GHz wireless installations.
Enjoy the benefit of working with the market leader in the field of Air Conditioning
integration that offers highly reliable solutions developed in collaboration with all major ACmanufacturers.

HMS Networks - Contact
HMS is represented all over the world.
Find your nearest contact here:

www.hms-networks.com/contact

Learn more at www.intesis.com
Owned by HMS Industrial Networks, Intesis® is a registered trademark in the European Union and is trademarked in the rest of the world. Other marks and words
belong to their respective companies. All other product or service names mentioned in this document are trademarks of their respective companies. All otherproduct or service names mentioned in this document are trademarks of their respective companies.
Part No: INSSRMEN2021 Version 01.0/2021 - © HMS Industrial Networks - All rights reserved - HMS reserves the right to make modifications without prior notice.