What's new from Mitsubishi Electric

Read about useful insights, important information, case studies, technologies and advice of new release products available in the New Zealand market relating to the building market.

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CAD drawing files are available now for your next HVAC project

Monday 15th of June 2020
CAD modelling is becoming a fundamental requirement throughout a project timeline. As such, CAD drawing files including 2D DXF, 3D DWG and 3D RFA files are available for e-Series Chillers, Ecodan, VRF/HVRF, Lossnay and other Mitsubishi Electric Systems. They can be accessed through our dedicated BDT dealer portal.

In addition to CAD resources, our online libraries also contain all relevant brochures, manuals, data books and guides for our full HVAC range.

Where to find the CAD drawing files on BDT Online

From the BDT Online homepage, select the ‘Document Library’ under ‘HVAC Downloads’ or the ‘Document Library’ box link at the top of the page.

You can find the link to the CAD drawing files on the left-hand side under the ‘CAD Drawing Files’ section. 2D DXF, 3D DWG, or RFA formats are available and updated regularly in accordance with additions to our Mitsubishi Electric Product Range.

Project Spotlight: Tamahere Eventide Home and Retirement Village

Tasked with the HVAC design and build for this project directly, All Seasons Air Conditioning was able to start on the front foot by downloading the architectural models onto their CAD software with the Mitsubishi Electric CAD models.

Pre-planning with CAD drawings helped overcome key design challenges

Due to each plant room housing multiple hydronic branch controllers, full fresh air ducted, and water fill sets, fitting these would have been difficult without prior modelling. Plastic composite piping was required to be run down significant lengths of corridors before connecting to a bulkhead supplying each care room. This was an obstacle when the piping’s internal diameter is 20mm with 13mm of insulation. As such, fitting the flow and return, which is much larger than standard copper refrigeration, would have proved a challenge on-site without pre-design and planning.

CAD drawings allowed full visualisation of the system for easy installation

Each of the two plant rooms was located above supply cupboards servicing their own floor’s care suites and supply fresh air ducting around the facility. Up to 850m of indoor plastic, composite piping was required for each hybrid branch controller. These distances are used to calculate the expansion tank sizing per box. As a result, full-sized drawings included CAD models of the R32 HVRF outdoor units for installation arrangement and piping layout.

Level one plant room section view

First floor HVAC and LTHW piping

During build LTHW piping and full-fresh air ducting

To obtain a BDT Online Login, please contact your local BDT Sales Engineer.

Dual Setpoint Mode now comes standard with City Multi VRF and HVRF Systems

Tuesday 28th of April 2020
Modern buildings are now being designed with more and more requirements for occupant comfort and energy efficiency. User comfort is now seen as an increased source of productivity and reduction in illness. Rising energy costs and a drive to lower energy use are motivating building operators to decrease power consumption.

Single Setpoint found in traditional HVAC systems often restricts comfort

Standard Automatic Mode offers only one setpoint to the user. This would often prove problematic as the comfort of the inhabitant would be influenced by not only the space temperature but also the temperature of the incoming air from the air conditioning system. One setpoint with warm or recirculated air would be comfortable; however, the same setpoint with cool circulated air would feel uncomfortable. Add to this the requirement for the changeover from heating to cooling needing a deadband to prevent cycling and you would end up with a sudden drop in temperature once the mode changes.

Dual Setpoint is the next generation in comfort and energy consumption control

Dual Setpoint offers a solution to this issue by allowing a different heating and cooling setpoint with the system changing mode in between the two setpoints. This control is also ideal for large open spaces where a number of occupants are present with different comfort requirements.

By introducing a deadband between the heating and cooling setpoints, energy savings are offered by preventing over-heating and/or cooling the space.

Dual Setpoint – now built-in to City Multi Systems for ease of use

Previously a high-level BMS or additional controls were required to achieve this level of comfort. However, now this functionality is inbuilt in Mitsubishi Electric City Multi VRF and HVRF Heat Recovery Systems.

Climaveneta News February 2020

Friday 28th of February 2020
Introducing the NX-G06 Air Source Chillers and Heat Pump Range (153-338 kW) with scroll compressors and low GWP refrigerant R454B for process and comfort applications

Mitsubishi Electric and BDT are pleased to announce an extension of the NX-G06 Air Source Chiller and Heat Pump Range from MEHITS Climaveneta.

These new 4-scroll compressor heat pumps and chillers are available in comfort and process models including:

  • NX-G06 4-Compressor Chiller for comfort applications
  • NX-N-G06 4-Compressor Heat Pump for comfort applications
  • NX-G06-Y 4-Compressor Chiller for process applications
  • NX-N-G06-Y 4-Compressor Heat Pump for process applications

New larger capacity models available

In addition to the smaller NX-G06 Range which come in 50kW to 218kW capacities, the new models are available with capacities from 153kW to 338kW. Furthermore, by featuring 4-scroll compressors, these larger units have two refrigerant circuits for increased redundancy.

As a result, this product is ideal for bigger commercial and industrial applications.

Next-generation R454B refrigerant for greater energy efficiency and reduced carbon footprint

In line with the objective of the Kigali Amendment, MEHITS Climaveneta extends its low carbon offering to scroll units. R454B is the new low GWP refrigerant chosen for our fixed speed scroll units and is identified with the acronym G06.

R454B refrigerant features:

  • Lowest GWP in the market for scroll units: only 466 (-76% vs R410A, -31% vs R32)
  • Reduced refrigerant charge (-10% vs R410A)
  • Higher efficiency (+3.5% vs R410A) with little capacity reduction
  • Compatible with same materials and components as R410A
  • Same operating map as R410A in cooling, better in heating
  • Mildly flammable A2L, PED fluid group 1
  • Composition: 69% R32 + 31% R1234yf

Derived from the existing NX Range with R410A (versions, configurations and main accessories are the same), these units have been upgraded to handle dangerous fluid (PED fluid group 1).

Some technical improvements have also been made to make the new NX-G06 Range more competitive and ready for the Energy Related Products (ErP) Directive 2021. One of the key improvements that has been made is this solution now has larger operating limits for heat pumps down to -15°C of outdoor temperature at full load.


Optional accessories are also available, including:

  • EC fans
  • Leak detector
  • Energy meter for BMS or W3000 connection
  • Smart control functions including Night Mode, user limit control, unit activation by remote temperature probe
  • KIPlink and new communication protocols (Konnex, Modbus TCP/IP, SNMP, M-NET)

Click here to find our Comfort Series documents including brochures, data books and more.

For any Climaveneta product inquiries, please contact:

Jim Baxter
National Sales Manager // HVAC Chillers
Black Diamond Technologies Limited
jimb@bdt.co.nz
021 853 737

Introducing City Multi R32 Hybrid VRF – The Revolution of Water.

Tuesday 8th of October 2019
The HVAC industry is currently seeing huge pressure put on the use of HFC refrigerants, primarily R410A in the air conditioning market. This pressure is systemic of the global drive to reduce our industry’s Global Warming Potential by reducing the amount of high GWP refrigerant we are supplying into the global market.

The New Zealand Government, having adopted the Kigali Amendment to the Montreal Protocol, has cemented us in the drive to reduce our global warming potential. This is impacting the decision-making process when designing HVAC systems, from the global research and design or manufacturing, all the way down to the type of unit we install into our homes and businesses here in New Zealand.

The market has seen the wider adoption of R32 refrigerant on a domestic level, and the increasing immergence of low GWP refrigerants such as R513 or R1234ze in the chilled water market, but the question still remains around the VRF / VRV market as to how we tackle low GWP refrigerants.

Mitsubishi Electric have been at the forefront of the VRF market for many years with the world’s first 2 pipe heat recovery VRF system. In 2014, they pioneered the world’s first Hybrid VRF (HVRF) system, incorporating VRF Technology into a hydronic-based fan coil system, providing the market with a 2 pipe heat recovery hydronic solution.

Again in 2019, Mitsubishi Electric have led the way by incorporating a low GWP refrigerant with Hybrid VRF giving the lowest GWP VRF-based system available. With a GWP potential as low as 20% of a traditional R410A VRF system, and no risk of refrigerant leakage into occupied spaces, R32 HVRF provides a convenient, modular VRF solution with advantages otherwise found in a 4 pipe heat recovery hydronic system.

Hybrid VRF is a simple premise. Using a traditional VRF condenser as the base of the design, engineers set about developing a hybrid branch controller which uses the same heat recovery principles of a traditional DX system. What sets this system apart is that it incorporates four plate heat exchangers as the condensing and evaporating devices to allow heat recovery to water rather than air.

By using the heat exchangers to absorb and impart heat to the water circuitry, HVRF is able to cool, heat or simultaneously heat and cool the circulated water out to the field devices. The Hybrid Branch Controller (BC) incorporates two separate variable speed DC pumps and manifold systems to direct the heated or cooled water to the required fan coil units. Using only two pipes between the branch controller and each indoor, while still being able to deliver both heating and cooling.

Coupled to a proprietary control system which considers the heating and cooling demand, as well as the flow rate of the system, there is no need for a complicated bespoke control and valve system with Hybrid VRF as there is with a traditional hydronic heat recovery system. This makes Hybrid VRF a very easy-to-use package.

R32 Hybrid VRF is the new era of VRF in the market. Mitsubishi Electric have strived to design a system which not only meets the legislative requirements being imposed on the market today, but also meets the future requirements that our market will have to adhere to.

The demand for high energy efficiencies, low global warming potential and improved corporate social responsibility is increasing. As a result, regardless whether operating on a global, national or regional basis, all businesses are being forced to look at their own buildings and how their decisions on capital plant will impact them over the life span of the product. As such R410A systems are becoming less viable. The cost of refrigerant is only increasing, with R410A cost per kilogram climbing rapidly based on the high GWP and the ETS tax imposed.

As business owners, design engineers, installers and suppliers of HVAC systems in New Zealand, it is our duty to provide the developers and building owners a robust future-proof solution to best suit their building and occupants needs. It is imperative we observe occupant safety and ensure our decisions will not have a lasting impact on our environment for the future.

BDT and Mitsubishi Electric are dedicated to leading the market with innovative products and initiatives which ensure our social corporate responsibilities are upheld; protecting ourselves, our stakeholders and the public.

For more information on R32 Hybrid VRF Technology, click here.







MEHIT Offers Lower GWP Refrigerants on Chillers and Heat Pumps

Wednesday 4th of September 2019
Mitsubishi Electric Hydronics & IT Cooling Systems S.p.A (MEHIT) introduces the use of lower GWP refrigerants R513A and R454B on its chillers and heat pumps.

MEHIT, which was formed in 2015 from the merger of the former Climaveneta and DeLclima businesses, has selected Opteon XP10 (R513A) for its screw and centrifugal oil-free chiller platform, and Opteon XL41 (R454B) for its multi-scroll platform, produced in Europe.

This is seen as part of an environmental initiative to provide efficient, sustainable, and long-term solutions to the chiller market ahead of the next 2021 European F-Gas Cap phase down and will be implemented from this year onwards.

R513A is a non-toxic, non-flammable A1 refrigerant with a GWP of 631, composed of a blend of 44% R134a and 56% R1234yf.

R454B is a “mildly flammable” A2L refrigerant blend of 68.9% R32 and 31.1% 1234yf. It has a GWP of 466 and offers improved energy efficiency, similar capacity, and excellent design compatibility.

This shift will help the chiller and heat pump industry move towards more environmentally sustainable refrigerant solutions while meeting long-term regulatory requirements and delivering consistent performance.

MEHIT has a long track record in eco-friendly solutions and was among the very first to promote, to the most eco-conscious customers, screw and centrifugal chillers based on HFOs; namely R1234ze with near-to-zero GWP, while also combining superior efficiencies.

MEHIT used its state-of-the-art research and development centres and its cooperation with Mitsubishi Electric Group laboratories to conduct in-depth evaluations of different refrigerant and components alternatives.

Currently, MEHIT screw chillers are available in R513A and R1234ze versions, and all its screw heat pumps and simultaneous heating and cooling units in R513A. MEHIT selected R454B for multi-scroll chillers and heat pumps. It was seen as the best solution to minimise environmental impact and energy use, while also improving performance. Some units utilising Mitsubishi Electric Inverter Compressors will be made available with R32.

As a R410A replacement for the multi-scroll chiller and heat pump ranges, MEHIT decided to also lead the change to lower GWP refrigerants. Therefore, the product line for the R454B version of the multi-scroll chillers is scheduled for release in the first quarter of 2020.

No other company is offering such a wide choice to the market. We are making this big effort, recognising customers at this point in time have different needs and constraints.


For more information, contact:
Jim Baxter
National Sales Manager – HVAC Chillers
021 853 737
jimb@bdt.co.nz






Black Diamond Controls – The Next level in Building Management Systems

Monday 17th of June 2019
Since 2017, Mitsubishi Electric has been providing Building Management System (BMS) solutions to the New Zealand HVAC market.

Black Diamond Controls is a Building Management System that natively integrates our diverse product range alongside third party devices. Ventilation products, VRF, chilled water, Ecodan, energy monitoring and more can now be integrated into a single unified platform to provide monitoring and control. With this level of system integration the scope for energy performance optimisation can be increased.

From small hospitality applications through to large commercial and health care facilities, Mitsubishi Electric can tailor a custom Building Management System solution specific to your project requirements.

A Wide Product Range to Satisfy a Variety of Needs

Our BMS product range covers a wide area, from programmable controllers through to field devices such as sensors, control valves and energy meters. Mitsubishi Electric work with a range of established product suppliers to ensure we can offer suitable engineered solution for each individual project.

Built on the established and industry leading Tridium Niagara Framework®, the DC-8000 JACE Controller operates the latest revision of the Niagara 4 Platform and is designed to integrate diverse building systems and devices into one seamless Building Management System.

Interface devices such as the MelcoBEMS Mini provide additional flexibility for incorporating single heat pump units into a BMS solution.

BMS and City Multi – An All-In-One System

Our BMS products complement and expand the capabilities of our current City Multi offering. The flexibility of fully programmable BACnet Controllers and access to a wide range of peripheral sensing and control devices allows increased system functionality.

Plant Optimisation for Maximum Operation Potential

Increased focus on operational cost and carbon reduction is driving energy optimisation opportunities in New Zealand. Through our applied product range we can supply, engineer and commission central chilled water plant optimisation solutions to suit any application.

Extracting the full potential from your mechanical plant under all operating conditions is essential to achieve the best system efficiency. With chilled water systems, how can you determine the best system efficiency point under varying operating conditions? Introducing the Central Plant Energy Control System (CPECS). This system continuously monitors operating parameters and reacts in real-time to achieve the lowest input energy operating point for the overall system.

CPECS is a brand agnostic solution, capable of being deployed on any system configuration and any manufacturer’s equipment. The optimisation platform runs on the Tridium Niagara Framework® and incorporates measurement and verification with integrated monthly performance reporting.



With numerous optimisation projects delivered in New Zealand, we are achieving significant energy savings on air cooled and water cooled chilled water systems.

Key BMS Projects in New Zealand:

Ministry of Education – Rawhiti Shool, Christchurch

  • An energy monitoring opportunity with BECA in Christchurch, where BMS capabilities were added to an existing City Multi System to provide off site real-time energy monitoring of the air conditioning and general electricity meters

Ruapehu Ski Club – The Lodge, Whakapapa Ski Field

  • Includes a BMS system incorporated with Ecodan Hot Water Heating and HyperCore Heat Pump Technology
  • Provides remote access and control capabilities for RSC members
  • Features system scheduling and performance monitoring
  • Enables energy monitoring and peak demand management

Te Omanga Hospice – Lower Hutt

  • Offers a comprehensive BMS suite incorporating the complete HVAC system
  • Features a customised user interface for system monitoring, scheduling and set point control


For more on Building Management Systems, please contact:

Jeremy Peck
021 194 8759
jeremyp@bdt.co.nz
BMS Sales Engineer

HVRF – The Way of the Future

Thursday 11th of April 2019
In July 2017 we showcased Hybrid VRF at our City Multi Conference in Wellington. Since then, we have been busy working with consultants and contractors across New Zealand, with many finding relevant applications for this innovative technology in their HVAC building design. One of the biggest reasons consultants are actively choosing HVRF has been to eliminate refrigeration in the building space, especially in medical facilities.

Ideal for Medical Practice Applications

Of all of the HVRF Systems sold in New Zealand to date, 33% have been installed at medical centres. Doctor-patient privacy is one of the key requirements for medical centres where consulting rooms are often fully sealed.

Refrigerant Concentration Limitations

These small footprint medical consultation rooms dictate the limitations on the refrigerant concentration allowed due to safety regulations, as laid out in ASNZS5149. In turn, additional refrigerant leak detectors are required, creating increased expenditure not just in capital costs but also ongoing maintenance of leak detection systems.

HVRF Mitigates These Factors as Only Water is Passed Through the Indoor Units

In the new amendments to the legislation, not only has the critical concentration limit been reduced, but under circumstances where refrigerant leak detectors are required, this is no longer the only measure that is acceptable according to ASNZS5149. Now at least two more safety measures should be implemented such as ventilation (natural or mechanical), safety shut-off valves, or a safety alarm.

What is Hybrid VRF?

Hybrid VRF is next generation technology from Mitsubishi Electric, the world leader in VRF Solutions. This unique 2-Pipe Heat Recovery VRF System replaces refrigerant with water between the Hybrid Branch Circuit Controller and the indoor units. This revolutionary design removes the need for expensive and on-going leak detection servicing and is specifically designed for occupied spaces where quiet, energy efficient, simultaneous heating and cooling is valued. Hybrid VRF provides a truly integrated solution for hotels, offices, hospitals and schools where occupant comfort is paramount.

The ETS and the Continually Rising Cost of Refrigerant

HVRF is not just about critical refrigeration limits. The cost of refrigerant, in particular R410A, is rising and has done so dramatically in the last 2 years with the introduction of the Synthetic Greenhouse Gas Levy which falls under the umbrella of the Emissions Trading Scheme (ETS). The New Zealand ETS puts a price on greenhouse gas emissions to provide an incentive to reduce emissions and in this case use alternative refrigerant gases that have less Global Warming Potential. The ETS has increased significantly with a rate increase (due January 1st 2019) to $41.55/kg of R410A contained in air conditioning units, and considerably more when purchasing additional refrigerant to charge a system. Prices have surged to as much as $100/kg in the New Zealand market.

The Following Projects All Benefited from Cost Saving on Refrigerant:

  • Rototuna Junior High School
    This project benefited from comfortable off-coil temperatures in the classroom and low noise, minimising classroom disturbance.
  • Rotorua Children’s Health Hub and Library
    The use of water instead of refrigerant through the indoor units provided quietness and comfort within the library.
  • Grafton Hall – The University of Auckland
    There was no need for leak detectors as there was no refrigerant in occupied spaces, saving on additional on-going maintenance costs.
  • Burnett Holdings
    With no refrigerant in occupied spaces, HVRF proved to be the perfect solution for individual small offices.
  • Boulcott Apartments
    The refrigerant restrictions in individual apartments also meant HVRF provided much quieter heating and cooling with low refrigerant cost for building owners.

Other Benefits of HVRF

  • HVRF is also a heat recovery system and provides high efficiencies.
  • HVRF is flexible and simple to design and install, incorporating the same control network and architecture as CITYmulti VRF.
  • The decentralised system means phased installation is possible with the same high levels of seasonal efficiency expected with VRF.
  • With water at the indoor units, HVRF provides comfortable and stable air temperature control; enhancing occupant comfort and making it an attractive option for many commercial applications.

To learn more about HVRF or read additional case studies click here.

New Service Tool Software for City Multi VRF Systems

Thursday 11th of April 2019
Mitsubishi Electric New Zealand is proud to release the recently updated Service Tool Software – Version 5.30 for checking, servicing and analysing City Multi VRF Systems.

As heating technology evolves, so too does the need for a monitoring system that not only gives you all the information you need in real-time, but is easy to use when you’re on (or away from) the job with limited time. Mitsubishi Electric New Zealand is proud to release the recently updated Service Tool Software for checking, servicing and analysing City Multi VRF Systems.

Evolving Data to Real-Time Visualisation

Moving from the older data table format, this newly updated version now features a new diagram format to help Service Technicians to more quickly quantify system performance and quickly identify any problem at a glance.

Easy System Monitoring at a Glance

The new City Multi VRF Service Tool condenses the entire system into a diagram, showing key components of each system for up-to-the-minute, simple monitoring in one place.

The diagram showing information related to a specific component is displayed next to it for quick referencing, so Service Technicians can easily see the value of any sensor, position of any valve or speed of any motor in its place on the refrigeration circuit in real-time, to accurately monitor the system and fix any issues that arise.

In the below example outdoor unit, we can easily see:

  • Compressor outlet temp = 96.6°C
  • Compressor crankcase temp = 41.8°C
  • Compressor speed = 72Hz
  • OU fan speed = 530rpm
  • OU coil refrigerant temp = 23°C in / 5 °C out

For an indoor unit we can easily see:
  • Fan speed = High
  • Mode called for = Heating
  • Refrigerant = 69.9°C in / 35.7°C out
  • Return air temp = 23°C
  • Valve position = 495 pulses open

Graphs Parameters Easily for Additional Reporting

The updated software now enables Service Technicians to graph any parameter being recorded to see a trend over time for accurate reporting and control. And, with the ability to graph multiple parameters against each other on the same time scale, comparative reporting is even easier.

For example, the graph below shows:

  • Compressor outlet temperature (TH4)
  • BC Box sub cooling outlet temperature (T5)

The Control is in Your Hands

With the newly updated Service Tool from Mitsubishi Electric, the servicing and maintenance of City Multi VRF Systems can be done at a glance with an easy-to-use, customisable online tool that not only saves time with reporting key data but will ideally save down-time onsite also.

Want to know more? Click here to learn more and download the Service Tool from the secure login section.*

* Note that the firmware of the ODU may require upgrading to enable the new software to work correctly. BDT can offer this firmware upgrade on a case by case basis to sites which require it. Please contact your local sales or service representative for more information.

QAHV CO2 Hot Water Heat Pumps

Monday 11th of March 2019
Water heating solutions and the steady supply of clean hot water on tap is an ever-increasing demand by businesses, but high temperature potable water and other HVAC water heating costs are often a significant, ongoing expense. Therefore, businesses and property owners are now looking for a potable hot water heating solution which supplies continuous hot water, while being environmentally friendly and cost effective in the long-term.

Introducing Mitsubishi Electric QAHV CO2 Hot Water Heat Pumps

More than ever, business owners are now looking to more environmentally friendly solutions to help provide core services to their customers when they need it most. So, Mitsubishi Electric have engineered the perfect solution; the QAHV CO2 Hot Water Heat Pump. The Mitsubishi Electric QAHV trans-critical hot water generator incorporates natural CO2 refrigerant rather than R410A which heating systems traditionally used. Now, hospitals, gyms, hotels and many other services can provide secure and reliable HVAC hot water supply with reduced cost and CO2 emissions.

A revolution in efficiency

With a zero Ozone Depletion Potential (ODP) and a low Global Warming Potential (GWP) of 1%, in compliance with the Kigali Climate Change Agreement, QAHV also boasts a highly efficient COP rating of 3.88* at standard conditions.

Ideal replacement for inefficient traditional boiler systems

Mitsubishi Electric QAHV is set to replace ageing, inefficient boiler systems and are increasingly being specified in new industrial and commercial projects where high volume electric hot water generation costs could affect a business’s pockets. Mitsubishi Electric QAHV utilises advanced inverter compressor technology combined with an inverter controlled primary pump to optimise the heat exchanger delta T and overall system COP in all load conditions.

Unique Heat Exchange Technology

With advanced “twisted spiral gas cooler” technology unique to Mitsubishi Electric, maximum heat exchange is ensured while maintaining strength and structural integrity under the CO2 high gas cooler operating pressures. The continuous spiral grooves of the water pipe design with the gas pipe wound around optimises water turbulence while maintaining high efficiency heat exchange, reducing pressure loss in the heat exchanger.

Environmentally friendly with superior energy efficiency

QAHV is an environmentally friendly solution to low ambient high temperature water supply. With a rated 40kW output capability down to sub-zero conditions** and operation down to -25°C while providing up to 90°C supply hot water, QAHV combines superior energy efficiency with optimum performance. This level of performance in the past has been the domain of much cheaper capital cost gas, oil or electric boiler systems. But, with high ongoing energy costs throughout its lifetime, increased environmental concerns and high maintenance costs around traditional heat sources, Mitsubishi Electric’s QAHV provides a long-term cost-effective maintenance solution.

Ideal for high temperature, large volume water applications

For engineered design solutions for large potable high temperature hot water storage (e.g. industrial wash downs, leisure facilities, hotels) the QAHV will ensure high temperatures of up to 90°C which opens up many industrial and commercial opportunities.

Of course, this exciting new product will be accompanied with the exceptional level of technical support, commissioning, and maintenance expertise that give our customers the confidence and security to invest in Mitsubishi Electric products. QAHV from Mitsubishi Electric: The high volume, high temperature commercial grade hot water supply solution for your next project.

* Standard conditions 17°C inlet water DB 16°C WB 12°C
** -3°C outdoor ambient


Ideal applications:

  • Gyms
  • Hotels
  • Schools
  • Shopping Malls
  • Universities
  • Factories

The Next Generation Mitsubishi Electric PQRY Water Sourced VRF

Tuesday 22nd of January 2019
When an air cooled air conditioning solution isn’t practical, contractors and consultants often look for effective alternatives to power their systems that both reduces long-term expenditure and future-proofs their clients investment with a sustainable, environmentally-friendly air conditioning solution. With changes in regulations and the demand for environmentally-friendly solutions ever-growing, water is becoming a popular alternative within the HVAC industry.

The Next Generation in Water Sourced VRF

Introducing Mitsubishi Electric PQRY Water Sourced VRF Systems. These unique systems use water to offer a solution to a range of common challenges such as limited plant space, long refrigerant pipe runs and compliance to standards while retaining the advantages of VRF and the benefits from very high efficiencies.

City Multi PQRY units connect to a central (condenser) water loop and extract energy from this. That energy is then used for simultaneous heating & cooling in a similar fashion to a common air sourced VRF system.

Small Footprint, Big Benefits

Mitsubishi Electric Water Sourced units are specifically designed for commercial applications such as hotels, commercial buildings, office buildings, and so many more applications, either as new builds or retrofits. With a small footprint and the ability to reject energy to the building water loop instead of the air, water sourced VRF allows you to bring the outdoor units inside and reduce plant size when:

  • The outdoor plant space is limited
  • The buildings external outdoor aesthetics are critical
  • Pipe runs or pipe lifts are large

This flexibility means reduced costs, more usable space, no defrost cycle and the ability to bring the unit closer to the air conditioned zone, therefore reducing the additional refrigerant volume required (a dual benefit of lower refrigerant cost and improved compliance with NZS5149).

A Water Sourced System with the Benefits of VRF

Water sourced outdoor units are available in heat pump (heating or cooling) and simultaneous heating and cooling configurations with no change to the internal system design from our standard VRF, thus retaining VRF’s modular design style and removing the need for bespoke controls or valves as seen on chilled water systems. This makes Mitsubishi Electric PQRY an easy solution for end of life replacement jobs or when capital costs need to be spread out as the separately operating VRF systems allow for staged installs with the added benefit of much improved redundancy.

Utilising the wide operating water temperature range of 10-45°C, you can also reduce the size of the external heat rejection plant, take advantage of waste heat from server rooms, and connect to energy sources such as nearby rivers, lakes or a geothermal loop in order to reduce upfront costs and long-term energy usage.

Increased Efficiencies with Heat Recovery

Mitsubishi Electric PQRY features the same patented heat recovery technology at the indoor units as also found in Mitsubishi Electric 2-Pipe Air Sourced VRF units, which provides real world efficiency increases and running cost savings. With multiple water cooled systems, an additional heat recovery stage is obtained at the outdoor units through the buildings water loop. Often, PQRY full load COP’s without heat recovery will exceed 5.0 and can improve significantly further with double heat recovery.

Other Key Features of Mitsubishi Electric Water Sourced Systems

  • No requirement for ventilation around the unit, therefore offering installation cost savings
  • More efficiency by offering dual heat recovery at the outdoor and indoor units
  • Smaller footprints which offer improved plant space flexibility
  • Uses a modular, non-bespoke design making implementation easy
  • Is a 2-pipe system throughout the entire building with simultaneous heating and cooling which saves on installation costs compared to 4-pipe chiller or 3-pipe VRF systems
  • Includes improved redundancy as each system operates independently and allows for staged installs; spreading capital costs and reducing loads on existing chillers for replacement jobs.

If your client is looking for a total air conditioning system that is super energy efficient, has a small footprint, is sustainable and will reduce capital expenditure, Mitsubishi Electric PQRY Water Sourced VRF is the perfect solution to recommend for your next commercial project.

For more information about Mitsubishi Electric PQRY Water Sourced VRF, please contact your local Sales Representative.

HYBRID VRF - Industry First Patented Technology

Tuesday 11th of December 2018
It is clear that designing building systems brings challenges. As we move to the future, inevitably there will be more regulations and legislation to adhere to, particularly around environment and occupant safety. BDT are no strangers to these challenges and we pride ourselves on providing solutions for the building market to comply, meet targets and provide outstanding quality systems for the end user.

BDT’s latest solution to the commercial building market is City Multi Hybrid VRF, the next generation of heat recovery systems for commercial buildings.

HVRF is a 2-pipe heat recovery system which replaces refrigerant with water between the BC Controller and the Indoot units, so there is no refrigerant in occupied spaces while providing higher efficiencies. You can also install and design it as a VRF whilst enjoying the features of a chiller system.

Why is this a great solution?

The SGG levy in New Zealand has put extra cost on purchasing synthetic greenhouse gases and this cost is set to increase, pushing up the price of refrigerants such as R410A. HVRF reduces this burden as it has less refrigerant in the total system. HVRF is ideal for applications where the limitation of refrigerant in occupied spaces is required, in particular where occupant safety is paramount. With no refrigerant in the occupied room space, this removes the need for expensive leak detection systems with ongoing maintenance costs.

HVRF is simple and flexible to design and install using the same control and network as VRF systems. Furthermore, the decentralised system means phased installation is possible with the same high levels of seasonal efficiency expected with VRF. With water at the indoor units, HVRF provides comfortable and stable air temperature control enhancing occupant comfort. Modular, small footprint and low weight outdoors makes for manageable phased installation. HVRF is a fully packaged solution; valves, pumps and heat exchangers are all contained within the HBC Controller with minor third party items required, making commissioning simpler.

Ideal applications:
  • Schools
  • Medical Centres
  • Libraries
  • Hotel
  • Office
  • Hospitals

Introducing the E-Series Modular Chiller

Wednesday 28th of November 2018
It is Mitsubishi Electric’s most efficient chiller system yet! The E-Series Chiller by Mitsubishi Electric provides highly efficient performance thanks to its inverter compressors & DC fan technology. Available in either cooling only or heat pump, the E-Series comes in either 90kW, 150kW & 180kW modules with the ability to connect up to 6 modules reaching a maximum installed capacity of over 1MW.

It is an energy efficient alternative system with flexible design!

The highly efficient E-Series Modular Chiller Range, with an ESEER of 5.66, is designed to answer the need for controllable, energy efficient cooling and heating with reduced plant size and a host of advanced features and benefits taken straight from Mitsubishi Electric’s experience in the air conditioning industry.

The E-Series Modular Chiller is available in either a cooling only version or as a highly efficient heat pump model that uses two advanced DC inverter-driven scroll compressors in each 90kW module. Soft Start Technology means that the starting current is only 8 Amps per module, where a conventional style chiller would pull up to 180 Amps on start-up. This reduces mechanical and electrical stress improving equipment longevity.

Whether one module or six, the deliverable capacity range is between 8% to 100%. The E-Series Modular Chiller delivers market-leading levels of efficiency with the ability for units to operate on their own or in conjunction with others.


Sophisticated design and small footprint installation

The unique shape and modular design of the E-Series Modular Chiller means that the system can be constructed with up to six individual units connected together, to provide a total capacity between 90kW and 540kW. This also provides outstanding redundancy due to multiple refrigerant circuits.

The use of U-shaped high performance air heat exchangers offers a greater surface area, for higher heat exchange efficiency, this and the units are narrower than conventional systems. Each 90kW module can be positioned next to each other in a row, with up to six units using the same inbuilt, internal header. For larger systems, it is also possible to have double rows of the units with a gap of only 900mm service space plus it can be designed as a double-row double stack, offering space saving where plant area maybe limited.


And yes they are quiet too!

The E-Series Modular Chiller achieves low noise levels which is increasingly important in inner city locations. These low noise levels are achieved through both the unique construction and design of each unit, as well as the advanced component technology within each chiller.

BMS integration

The E-Series Modular Chiller is easily integrated with new and existing BMS systems, either hardwired or via MelcoBEMS Mini Interface it can be remotely controlled and monitored, ideal for facilities management.


New additions to the E-Series Chiller Family

As of September 2018, the Mitsubishi E-Series Range has been extended to now include 150kW & 180kW modules.

With similar technical features & providing excellent efficiencies, the P1500 & P1800 Models are a more traditional shape with vertical discharge condenser fans. Available in both cooling only & heat pump models, up to six of these modular chillers can be connected in one system.



Lossnay Fresh Air Energy Recovery Ventilation

Tuesday 6th of November 2018
Ventilation is an important aspect in any HVAC installation. It not only provides compliance to the G4 Clause of the New Zealand Building Code but also ensures internal environments are safe and suitable for occupation. With ever increasing energy costs and a push to lower carbon footprints, air to air heat recovery for ventilation is becoming a must have for any building.

Our current LGH-RVX-E Range of Fresh Air Energy Recovery Ventilation Systems have a treated, permeable paper energy recovery core. This core allows the transfer of heat and water vapour while preventing the transfer of gases.

So what sets the LGH Lossnay apart from other Ventilation Systems?


Total heat recovery
  • Energy recovery through the permeable core not only recovers sensible heat but also latent heat from humidity in the air, further reducing load on HVAC plant and saving on energy consumption.
Excellent energy recovery rates even in low temperatures
  • Lossnay’s total energy recovery rate is typically in the order of 70% ~ 75%. This is higher than common efficiencies seen for a solid core ventilator which transfers sensible heat only.
  • At 0°C outdoor air temperature, and a space temperature of 20°C, supply air from a Lossnay unit can be around 16°C – which is warm enough to supply directly to a fan coil unit without any expensive additional top up heating.
Optimised humidity management
  • Transferring latent heat (humidity) also helps maintain an acceptable relative humidity within the occupied space. With Lossnay, air introduced into the space is closer to the space humidity than other uncontrolled ventilators. Without Lossnay, air is typically preheated and humidified in Winter and precooled and dehumidified in Summer.
Standard Bypass Damper removing the need for additional controls
  • All LGH Lossnay units come standard with a Bypass Damper allowing for free cooling and night purge. Internal settings also prevent the unit from operating on bypass when supply air will be below an acceptable temperature.
  • Lossnay is able to communicate with Mitsubishi Electric Air Conditioning units allowing for the Bypass Damper to provide free cooling based on the connected indoor units mode of operation. This removes the need for any expensive additional controls.
Minimised riser space
  • Air processing locally removes the need for large roof mounted air handling units. Riser space can also be minimised by using smaller intakes closer to the space.
Reduced running cost
  • Lossnay removes issues associated with traditional methods of supplying untreated fresh air in summer and utilising electric heater banks for Winter. These old methods are no longer seen as acceptable as they commonly cause high running costs in Winter and problems such as poor cooling performance and condensate dripping from supply duct / grilles in Summer.
Very quiet operation
  • LGH Lossnay’s are quiet in operation with even the largest unit only producing 41dBA at 1.5m below the unit on high fan speed.
Air filtration
  • Outside and Exhaust Air Filters are provided as standard for core protection. An optional high efficiency filter can be fitted into the unit to filter the supply air to rating F7 (EU7).
Easy service access
  • Service accessibility is required to one side of the unit only. The electrical panel, core and filters can all be accessed through the one access panel.
Functional controls
  • PZ-61DR-E Wall Controller allows for the following additional functionality:
    - Display of outside air, exhaust air and calculated supply air temperature.
    - Function settings allow for fan speeds to be increased slightly to achieve airflow if slightly short.
Advanced Co2 Control and Air Pressure Control
  • Inbuilt logic allows CO2 control through input via a third party 0-10V CO2 Sensor.
  • Positive or negative pressure can be achieved by offsetting supply and exhaust fan speeds.
  • Test data for gas transmission shows this is very low - less than 3% for all gases tested.
  • Test data for bacterial transmission shows no bacteria is transferred between the exhaust and supply air streams.

For more information on our Lossnay or other Mitsubishi Electric Ventilation Products, please contact your local Sales Engineer.

Full Parts and Labour Warranty Programme

Friday 14th of September 2018
At Black Diamond Technologies (BDT) we have always been committed to standing behind our Authorised Mitsubishi Electric Dealers in New Zealand, because we know that they, like us, understand the importance of quality, whether it is product, installations or service.

We know Dealers choosing Mitsubishi Electric City Multi Variable Refrigerant Flow (VRF) Systems for projects comes down to more than just being the best quality and value. Dealers promoting the use of Mitsubishi Electric for projects need to provide clients with peace of mind for their HVAC investment.

That is why BDT developed a local, nationwide Technical Services Team who provides industry-leading support to Dealers. This is also why our warranty includes labour, because we understand how this can affect a business if their time is not accounted for when rectifying warranty claims.

This mutual trust and commitment between us and our Dealers has lead BDT to go one step further with an Extended Full Parts and Labour Warranty Programme on the EP, PUMY and HVRF Ranges. Offering warranties that go beyond one year is about providing our Dealers further assurance when selecting Mitsubishi Electric City Multi VRF Systems for their clients.

The extended warranty period applies to all new orders placed from 15th August 2018 onwards for the following product ranges:

Hybrid VRF (HVRF)
PURY / PQRY (air and water source) HVRF Systems including indoor units
Now 3 Year Full Parts and Labour Warranty*

HVRF is a 2-pipe heat recovery VRF with water between the Hybrid Branch Circuit (HBC) Controller and indoor units. You can install and design it as VRF whilst enjoying the features of a chiller system. This provides a complete modern solution for office buildings, hotels, medical centres, schools, high-rise buildings, shopping centres and other commercial premises.


R2 and Y High Efficiency Series
PURY-EP / PUHY-EP Systems including indoor units
Now 3 Year Full Parts and Labour Warranty*

EP models have increased heat exchange efficiencies of up to 30% as they are manufactured with a high quality aluminium flat tube heat exchanger, increasing surface contact area yet maintaining the same footprint as standard heat exchangers. This significantly improves energy saving performance.


S Series
PUMY-P-V(Y)KM VRF Systems including indoor units
Now 5 Year Full Parts and Labour Warranty

The City Multi S Series is ideal for small commercial applications and makes use of a two-pipe refrigerant system, which allows for system changeover from cooling to heating. It is the all-in-one air conditioning solution for large residences or offices with multiple rooms (nominal 12.5 - 15.5kW cooling / 14.0 - 18kW heating).


For further conditions please contact your local City Multi Sales Engineer.

*As a condition to this Extended Full Parts and Labour Warranty Programme, Dealers will need to ensure quarterly maintenance checks are made on these product installations with the Maintenance Check Sheet, which is attached.

AE200 Central Controller

Friday 14th of September 2018
Our current AE200, 10.4 inch touchscreen, is a popular central controller which is able to connect to all Mitsubishi Electric City Multi and split systems. The intuitive central controller allows you to control up to 200 indoor units as well as offering daily, weekly and 365 day timeclock control, plus offers remote accessibility through the client’s computer network.

This controller is able to offer a lot more functionality through additional hardware and licensing.

BACnet connection to a Building Management System (BMS) using licensing. This allows up to 200 indoor units to connect to a BMS through one BACnet license installed into the AE200 and subsequent expansion controllers without the need for expensive additional hardware.

Power Apportioning – The system utilises third party electrical pulse meters to measure the power usage of each outdoor unit via the PAC-YG60MCA-J PI controller. The power used is then assigned to each indoor unit based on the usage over that time. This can be used to assign power usage to individual units for on billing. This can now be achieved without the need for TG2000 software by exporting CSV data directly from the AE200 onto a USB which can be edited on a PC using the Charge Calculation Tool. The data can also be communicated to a BMS over BACnet using the BACnet license.

PI Controller – Third party electrical, water or gas pulse meters can be inputted into the system through our PAC-YG60MCA-J PI controller. This information can be displayed on screen or outputted to a CSV file on a USB enabling the end user to monitor building energy consumption.

AI Input Controller – Third party temperature and humidity sensors can be monitored using our PAC-YG63MCA-J and displayed on the AE200. Trending can be viewed over the AE200 web interface. An alarm output by email can be generated when measurement exceeds a preset upper or lower limit.

DIDO Controller – Control and Fault monitoring of external items can be achieved using our PAC-YG66DCA-J DIDO controller. This allows third party items to be time scheduled through the AE200 similar to an air conditioning unit or to be interlocked to any air conditioning unit connected to the AE200. This also allows indoor units to be turned on and off from an external input such as a security system.

Alpha2 PLC – The AE200 can connect to our Mitsubishi Electric PLC through our AHC adaptor. This allows for simple logic to be applied to third party digital or analogue inputs or sensor data of any air conditioning unit connected to the AE200. This logic can then be used to control digital or analogue outputs or any air conditioning unit connected to the AE200.

For more information on any of the above functionality please contact your local City Multi Sales Engineer.

City Multi VRF YNW

Monday 9th of July 2018
Mitsubishi Electric’s City Multi VRF YNW Range provides our lowest installation costs, running costs and CO2 emissions of a VRF system. This is achieved through the new 4-sided heat exchanger, compressor and fan design, improving both nominal and seasonal efficiency levels.

Launched at the City Multi Conference last year the VRF YNW Range offers further energy efficiencies with EP Models which retain the unique flat tube aluminium micro-channel heat exchanger, a pivotal step in providing more effective and efficient heat transfer.

YNW Range alleviates some of the legislative concerns (AS/NZS 5149:2106) regarding the critical concentration limit of refrigerant in occupied spaces, due to the significantly reduced refrigerant charge needed to produce the same rated output compared with previous models.

Advanced Heat Exchanger for Energy Efficiencies

The YNW Range uses a newly designed four-sided heat exchanger mounted on the upper-part of the module which decreases energy usage and increases the heat exchanger’s efficiency. The multiplier effect created by increasing the number of coil faces from three to four surfaces greatly improves the operational efficiency.

Superior Energy Efficiencies with EP Models

The YNW Range offers advanced heat exchangers on their standard models, incorporating copper tube aluminium fins; while high efficiency EP models incorporate the flat-tube aluminium heat exchanger, increasing the surface area of the coil for even higher efficiencies. The inside of the flat tube is divided into thin compartments which increase the area of contact between refrigerant and air, leading to a significant improvement in energy-saving performance.


Footprint Reduced by up to 29%!

YNW Range maximises the space available for plant by reducing the area required for outdoor units. Up to 51kW of cooling capacity can be delivered per square metre of plant thanks to the advanced wrap around the heat exchanger.

Greater flexibility for location of outdoor units is possible thanks to multiple external static pressure settings. Extending up to 80Pa will help with long or narrow ducting requirements.

Enhanced Inverter Scroll Compressor

Exclusive to the City Multi VRF YNW Range, the improved compressor with centrifugal force cancelling mechanism enables the speed to increase to 140 revolutions per second – speeding up start-up operation and offering improved part load performance.

These characteristics offer the most intelligent and reliable inverter scroll compressors on the market.

Advanced Compressor Programming

The YNW Range features adjustable logic settings such as Low Noise modes and compressor saturated suction temperatures including a variable floating SST.

The options offered by City Multi VRF systems allow fixed evaporation set points ranging from -6 all the way to 14 degree Celsius. By floating the saturated suction temperature, the condensing unit can lift the evaporation temperature as the fan coil units reach their temperature set point. The result, increased occupant comfort levels and further improvement on the overall efficiency of the units when looking at seasonal performance data.

Larger Capacity Range

The YNW Range not only offers a larger range of single module condensers, but also an increased number of twinned condenser options.

YNW Range is the largest range of condensers available in today’s market, allowing combinations up to 140kW for heat recovery systems and up to 168kW for the heat pump range in both the standard and high efficiency options.

Introducing the E-Series Modular Chiller

Thursday 26th of April 2018
It is Mitsubishi Electric’s most efficient chiller system yet! The E-Series Modular Chiller by Mitsubishi Electric provides an alternative to traditional chillers with the ability to provide powerful heating or cooling at high efficiencies from a small footprint. The E-Series Modular Chiller has a comparatively low refrigerant charge and is ETS levy exempt. No refrigerant hazards in occupied spaces negate the need for expensive leak detection systems.

It is an energy efficient alternative system with flexible design!

The highly efficient E-Series Modular Chiller range, with an ESEER of 5.66, is designed to answer the need for controllable, energy efficient cooling and heating with reduced plant size and a host of advanced features and benefits taken straight from Mitsubishi Electric’s experience in the air conditioning industry.

The E-Series Modular Chiller is available in either a cooling only version or as a highly efficient heat pump model that uses two advanced DC inverter-driven scroll compressors in each 90kW module. Soft Start technology means that the starting current is only 8 Amps per module, where a conventional style chiller would pull up to 180 Amps on start-up, this reduces mechanical and electrical stress improving equipment longevity.

Whether one module or six, the deliverable capacity range is between 8% to 100%. The E-Series Modular Chiller delivers market-leading levels of efficiency with the ability for units to operate on their own or in conjunction with others.






Sophisticated Design and small footprint installation

The unique shape and modular design of the E-Series Modular Chiller means that the system can be constructed with up to six individual units connected together, to provide a total capacity between 90kW and 540kW. This also provides outstanding redundancy due to multiple refrigerant circuits.

The use of U-shaped high performance air heat exchangers offers a greater surface area, for higher heat exchange efficiency, this and the units are narrower than conventional systems. Each 90kW module can be positioned next to each other in a row, with up to six units using the same inbuilt, internal header. For larger systems, it is also possible to have double rows of the units with a gap of only 900mm service space plus it can be designed as a double-row double stack, offering space saving where plant area maybe limited.

And yes they are quiet too!

The E-Series Modular Chiller achieves low noise levels which is increasingly important in inner city locations. These low noise levels are achieved through both the unique construction and design of each unit, as well as the advanced component technology within each chiller.

The E-Series Modular Chiller is easily integrated with new and existing BMS systems, either hardwired or via MelcoBEMS mini interface it can be remotely controlled and monitored, ideal for facilities management.

CITY MULTI Newsletter - Issue 11

Friday 10th of November 2017
BDT welcome back the re-introduced City multi online newsletter. This newsletter will be emailed out on a regular basis updating you on new product ranges, functions and features specific to City multi and Applied Products and offer you a first-hand glimpse into some of the recently completed projects in the New Zealand Market.

Over the past 18 Months the BDT City Multi and Applied Products team have seen some significant changes. With the introduction of additional Sales Engineers and the changes to the team members roles and positions this is a good opportunity to re-introduce the City Multi and Applied Products team.

Matthew Hansen - National Sales Manager
John Greaves - Northern Sales Engineer
Penelope Tait - Northern Sales Engineer
Vince Anthony - Central Sales Engineer
Simon Jane - Southern Sales Engineer
Jon Leyland - Technical Product Manager - Applied Products
Karl Drew - Assistant Product Manager VRF
Shaun Wallace - HVAC Estimator
Jordan Hurley - HVAC Estimator



Best Regards,

Matthew Hansen
National Sales Manager
City Multi and Applied Products

Auckland University of Technology: NorthMed

Thursday 9th of November 2017
The NorthMed Clinic is a new building situated at Auckland University of Technology’s (AUT) North Shore Campus. This innovative facility which opened in July 2017, comprises of modern medical offices and teaching space for Physiotherapy, Psychotherapy, Podiatry, Oral Health, and Student Health Services.

HYBRID VRF - Industry First Patented Technology

Thursday 9th of November 2017
It is clear that designing building systems brings challenges. As we move to the future, inevitably there will be more regulations and legislation to adhere to, particularly around environment and occupant safety. BDT are no strangers to these challenges and we pride ourselves on providing solutions for the building market to comply, meet targets and provide outstanding quality systems for the end user.

BDT’s latest solution to the commercial building market is Hybrid VRF, the next generation of heat recovery systems for commercial buildings.

HVRF is a 2-pipe heat recovery system, the difference is refrigerant is replaced with water from the BC Controller to the indoor units. You can install and design it as VRF whilst enjoying the features of a chiller system.

Why is this a great solution?

The SGG levy in New Zealand has put extra cost on purchasing synthetic greenhouse gases and this cost is set to increase, pushing up the price of refrigerants such as R410A. HVRF reduces this burden as it has less refrigerant in the total system.

HVRF is ideal for applications where the limitation of refrigerant in occupied spaces is required, in particular where occupant safety is paramount. With no refrigerant in the occupied room space, this removes the need for expensive leak detection systems with ongoing maintenance costs.

HVRF is simple and flexible to design and install using the same control and network as VRF systems. Furthermore, the de-centralised system means phased installation is possible with the same high levels of seasonal efficiency expected with VRF. With water at the indoor units, HVRF provides comfortable and stable air temperature control enhancing occupant comfort.

Modular, small footprint and low weight outdoors makes for manageable phased installation. HVRF is a fully packaged solution; valves, pumps and heat exchangers are all contained within the HBC Controller with minor third party items required, making commissioning simpler.

Ideal Applications:

  • Hotel
  • Office
  • Hospitals
  • Mixed-use buildings
  • Education

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