Multi Loop VAV Diffuser Controls (MLC) | rickardair

Multi Loop VAV Diffuser Controls (MLC)

MC or Multi-Loop Controls is a dedicated Master and Slave system that can be easily linked to a buildings BMS and Rickards powerful diffuser management software.

Rickard’s ML Controls reduce the cost of a BMS connection by decentralizing the BMS access point. Since a single Master Communications Unit (LonWorks or BACnet) connects up to 60 diffusers, the cost of connection is reduced considerably.

Rickard’s diffuser management software gives the user complete control over a buildings diffusers and therefore the comfort of it’s occupants.

Rickard’s ML Controls are available as Masters with onboard or remote sensing and as Slaves. Top up neck heaters are available if required.

FEATURES
  • DEDICATED MASTER & SLAVE SYSTEM
  • COST EFFECTIVE STAND ALONE OR BMS
  • INTEGRATION (LonWorks, BACnet)
  • FREE DIFFUSER MANAGEMENT SOFTWARE
  • EASY COMMISSIONING
  • CONDITION MONITORING
  • PLUG AND PLAY INSTALLATION
  • DIFFUSER TUNING
  • SCALABLE SYSTEM
OPTIONS
  • ONBOARD OR REMOTE SENSING
  • TOP-UP HEATING
RELIABILITY
  • BUILT ON OUR TRIED AND TESTED
    MLM SYSTEM

    MLM 24V POWER SUPPLY

    MLM 24V MASTER COMMUNICATIONS UNIT (MCU2)

SOFTWARE

Free Software allows the user to manage an entire buildings diffusers and every occupants comfort.
Stand Alone or BMS Integration (LonWorks, BACnet)
Quickly define your zones

EASE OF COMMISSIONING

Masters and Slaves come pre-configured from the factory.
Just connect the diffuser to the network with the inter-diffuser cable provided and assign it to a zone using our free Software.
Commissioning history can be saved.

CONDITION MONITORING

PC Monitoring of Room Conditions
Logging of Diffuser and Room conditions
Resolve Queries Centrally
Fault Monitoring
Fault Reporting

GREEN BUILDING BENEFITS

Management Credits
Indoor Environmental Quality Credits
Energy Efficiency Credits
Individual Temperature Control

EASE OF INSTALLATION

Power and communication cables in one
Simple daisy chain connections between diffusers
Robust unidirectional latched connectors (wrong connections eliminated)

PLUG & PLAY

Masters and Slaves come pre-configured from the factory. Just connect the diffuser to the network with the inter-diffuser cable provided and assign it to a zone using our free Software.

DIFFUSER TUNING

Adjust Diffuser Minimum and Maximum stops electronically
Adjust Diffuser Heater Maximum

SCALABLE

Add Networking Hardware (MCU) to manage more diffusers and integrate with the BMS

COST EFFECTIVE NETWORKING

Connect to up to 60 diffusers per Master Communications Unit (MCU)
One BMS access point (MCU) required for every 60 diffusers. Decentralisation reduces the BMS connection cost per diffuser considerably
Connect multiple MCU’s together to manage larger buildings
Rickard, LonWorks and BACnet MCU variants available

RELIABILITY

Diffuser life cycle testing passed the equivalent of 30 years of operation. Test criteria requires 3000 operating hours and 4000 control cycles per year
Proven automotive grade connectors
Experience in Electronic VAV diffusers since 1981
Built on our tried and tested MLM System. MLM controls and Rickard Stepper Motor technology launched in 2007
Thousands of successful MLM sites are currently in operation
Rely on Rickard’s excellent support track record

EXTRAS

Top up heaters save energy in winter by heating cold isolated zones. The buildings supply air temperature can therefore be set to only satisfy the buildings base load.

MLC or Multi-Loop Controls is a dedicated Master and Slave system. There are two types of masters, an on-board master that uses an on-board (on-diffuser) sensor and a remote master that uses a wall thermostat with its own built in sensor to sense room temperature and control a zone. The Rickard Software is used to designate a zone number, link Slave diffusers to that zone, read diffuser status and read and write diffuser settings. The Rickard software is free of charge.

A Power Supply Unit (PSU2) supplies power to up to 15 diffusers. Any combination of Master or Slave diffusers can make up the 15 diffusers powered by a single PSU. A single inter-diffuser cable that carries both power and communications links diffusers in a daisy chain manner. A maximum length of 150m of inter-diffuser cables and up to 20 cables (Rickard inter-diffuser and extension cables only) can be used per PSU2. A USB module and laptop with Rickard MLM software loaded makes it possible to connect to all of the diffusers connected to a power supply. Diffuser settings, status and inter-diffuser relationships can be read and edited using the software.

The software uses a simple and intuitive interface that allows the user to position and locate diffusers on a floor plan that represent an actual installation. Diffuser icons represent the diffusers on the floor plan and maximising a diffuser icon gives access to its settings and status.

When an installation is fitted with multiple PSU’s and management of the buildings energy and comfort is required from a central point, PSU’s can be connected together using a Master Communications Unit (MCU). A MCU can connect to 4 PSU’s and therefore a total of 4 x 15 diffusers i.e. 60 diffusers at a time. Multiple MCU’s can be connected together to manage the entire building. MCU’s are the access point through which a Building Management System (BMS) connects to the Rickard system. Rickard, BACnet (TCP/IP, MS/TP) and LonWorks MCU variants are available. Since only one MCU access point is required for every 60 diffusers, the cost of connecting to a BMS is drastically reduced. Every MCU variant (BMS or Rickard stand-alone) gives access to 60 diffusers at a time by using the Rickard Software.

NOTE: Joining cables by cutting and joining voids Rickards warranty. Cables that have been cut and joined negatively effect the reliability and quality of the communication signal on a channel and can potentially damage components.

MLC or Multi-Loop Controls is a dedicated Master and Slave diffuser control system.

There are two types of master configurations, an on-board master that uses an on-board (on-diffuser) sensor and a remote master that uses a wall thermostat with its own built in sensor to sense room temperature. The master diffuser has an interface box fitted to the back of the diffuser for the wall thermostat, supply air temperature sensor, top-up heater module and inter-diffuser connections.

Back of Rickard VAV Diffuser Architecture

    BACK OF ELECTRONIC VAV DIFFUSER WITH ML CONTROLS

Available accessories include on-board temperature control, remote temperature control, top up neck heaters.

The Rickard MLM Software is used to commission Rickard diffusers and manage an entire buildings individual comfort levels. Diffuser settings, status and inter-diffuser relationships can be read and edited using the software. Rickard MLM Software is free of charge.

The software uses a simple and intuitive interface that allows the user to position and locate diffusers on a floor plan that represent an actual installation. Diffuser icons represent the diffusers on the floor plan and maximising a diffuser icon gives access to its settings and status.

Since every diffuser has a unique address, it is possible to link the address with its position. Every diffuser comes with 2 labels, one to identify the diffuser and the other to mark its position on a floor layout plan. Should a diffuser be lost, a ping button allows the user to identify the diffuser on the software and position it correctly. The ping button is located on the controls on the inside of the trim plate on a master and on the back of a the diffuser on a slave. The Software incorporates a Project Selector for easy navigation between floors and sections. Once a Project has been commissioned it can be saved.

It is not necessary to run MLM software for the Rickard MLM system to operate.

ADDITIONAL SOFTWARE FEATURES

PC Monitoring of Room Conditions
Logging of Diffuser and Room Conditions
Resolve Queries Centrally
Fault Monitoring
Fault Reporting
Adjust Diffuser Minimum and Maximum stops
Adjust Diffuser Heater Maximum
Comprehensive help file built into software
Wizards assist the setup of accessories e.g. Occupancy Sensing
Back-Off functionality saves energy during off peak times
Warm-up functionality rapidly warms a space reducing the risk of stratification

MLM VAV Diffuser Software User Interface