HVAC&R Nation August-September 2020 by AIRAH

Taking a position HVAC&R licensing in Australia

Skills

WORKSHOP

Air conditioning – heating

Get with the program When it’s time to upgrade your business software August–September 2020 / ISSUE 133

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2 | HVAC&R Nation | www.airah.org.au/nation | August–September 2020

5/8/19 2:45 pm

August–September 2020 / ISSUE 133

Get with the program 19

HVAC&R Nation is published by the Australian Institute of Refrigeration, Air conditioning and Heating (Inc). AIRAH – National Office James Harrison Centre 3/1 Elizabeth Street, Melbourne VIC 3000, Australia. Tel: 03 8623 3000

Fax: 03 9614 8949

www.airah.org.au/nation

Magazine team Communications Manager Matthew Dillon matt.dillon@airah.org.au Tel: 03 8623 3000 Editor Mark Vender mark.vender@airah.org.au Tel: 03 8623 3001 Contributing writers Danny Chan Sean McGowan Willow Aliento

These days it’s becoming more and more common for HVAC&R businesses to use some kind of business software. Willow Aliento talks to technology experts about the different options available.

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HVAC&R Nation regulars

Glenn Douglas glenn.douglas@airah.org.au Tel: 0411 839 667

The Toolshed

Global Update Industry news from around the world

ISSN 1834-9522

HVAC&R Nation is printed on paper sourced from well manned forests and other controlled sources.

Air conditioning – heating

See what’s new in the ‘Shed

John McGrath john.mcgrath@airah.org.au Tel: 0419 556 108

Skills Workshop

Exclusive to this issue

Green Wedge A scooter solution for micro-mobility

Industry profile We catch up with veteran educator Steve Smith

Disclaimer HVAC&R Nation is an official publication of the Australian Institute of Refrigeration, Air Conditioning and Heating Inc. Statements expressed in HVAC&R Nation do not necessarily reflect the policy or views of AIRAH or its members.

During the heating months, humidification becomes an important consideration

No responsibility is accepted by AIRAH, the Editor or HVAC&R Nation’s supply partners for the accuracy of information or for errors or omissions. HVAC&R Nation is distributed without charge to all financial members of AIRAH.

26 28

Cool Tech When you need to get your drink chilly in a hurry

No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means electronic, mechanical, photocopying, recording or otherwise, without permission of the Publisher.

Taking a position

Licensing for HVAC&R technicians is back on the agenda. Sean McGowan looks at AIRAH’s position statement and what it sets out to achieve.

Smoko with … Q&A with Brynne Jansen

13,144 September 2019

Around the Nation Who’s in the news?

The publisher reserves the right to alter or omit any article or advertisement submitted and requires indemnity from advertisers and contributors against damages or liabilities that may arise from material published.

Technical tips

Lighter Side The shonkier side of the nation

PLEASE CONSIDER THE ENVIRONMENT AND RECYCLE THIS MAGAZINE IF YOU ARE NOT GOING TO KEEP IT.

August–September 2020

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HVAC&R Nation

Ed’s letter

JOINING THE DOTS

So bewildering that we decided it was time to do a feature on the different packages for HVAC&R businesses. You can find it on page 19.

Back when I worked in IT, I did a few projects with a software system called SAP. It was kind of a big deal at the time and companies around the world were racing to implement it. Why? Because it did something remarkable: It brought together data in business systems that had previously been disconnected.

Speaking of making connections, I’m pleased to say that after about two and a half years in the world of HVAC&R, I’m finally starting to join up some of the dots and make out the bigger picture.

In the old days there was one system for the general ledger, another for accounts payable, accounts receivable, payroll and so on (usually written in COBOL or FORTRAN). Now there was just one package that did everything, depending on the modules you purchased. Suddenly, you could double-click on a transaction line in the system and find out what was purchased, who purchased it, when it was ordered and paid for, and how much it cost. In today’s world of instant information at our fingertips, that probably doesn’t seem very impressive, but at the time it was huge. Since then technology has filtered down. These days you can get similar packages for small and medium businesses that will link up finances, customer data, and management of jobs in the field. In fact, there is a bewildering range of options.

Sure, the technical stuff still eludes me. It’s hard when you don’t have the foundations in engineering and science – and when you’re not actually on the tools to see how it all works. The psychrometric chart seems pretty straightforward when someone explains it, but 10 minutes later the information just … evaporates. Still, it is nice not to have to nod my head and smile vaguely when someone mentions HFCs, the NCC, AHUs or even NABERS. More than that, it’s great to get to know the people in the industry better. Their stories help link everything together. That's especially true for our second feature this month. HVAC&R licensing has been an ongoing conversation in our industry for much longer than I’ve been around. But over the past few months I’ve had the chance to hear people speak passionately about the topic through AIRAH’s

survey on HVAC&R licensing. Thanks to everyone who participated – your input has been invaluable. You can read more about the survey and AIRAH’s position statement on page 10. As I write this we are just experiencing a second big wave of the COVID-19 pandemic. I hope that all of you – especially those working onsite and coming into close contact with others – are staying safe and sound. ■ @AIRAHnews

Mark Vender Editor mark.vender@airah.org.au

Advertise in HVAC&R Nation HVAC&R Nation, has the highest distribution and readership of any HVAC&R publication in Australia. Targeted distribution Circulation 13,144

Readership 32,855

HVAC&R Nation is distributed free over the counter at more than 290 outlets Australia-wide including: Actrol, Kirby, Airefrig Australia, Beijer Ref, Cold Chain Group, Polyaire, Reece, Totaline, Tradeline Plumbing and TAFE colleges.

Contact: Glenn Douglas – glenn.douglas@airah.org.au 0411 839 667 or John McGrath – john.mcgrath@airah.org.au 0419 556 108

HVAC&R Nation

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SUZ-M Series

The New SUZ-M series outdoor units are now available in R32 refrigerant, making it more energy efficient compared to previous R410A models. Ideal for residential and light commercial applications, SUZ-M series works with a broad range of indoor units, perfect for many interior designs. The SUZ-M series are rated to 52°C ambient.

» Full inverter » Single phase only » Easy to transport and install » Unobstructive, compact, and easy to hide from view SUZ-M25/35VAD-A

SUZ-M50VAD-A

For more information on our products please visit www.mitsubishielectric.com.au

SUZ-M60/71VAD-A

Phone:1300 280 625

August–September 2020

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HVAC&R Nation

Toolshed 1

Alfa Laval’s heat exchanger

Modbus route

Users of the Digichem Plus+ dosing system can now order the Modbus RTU as an option.

The MA30 from Alfa Laval is a gasketed plate-and‑frame heat exchanger that is designed for a wide range of applications, including HVAC&R.

The Modbus RTU is a high-level interface (HLI) that enables building control management systems (BCMS) to monitor the Digichem Plus+ dosing system with a two-core wire connection, says its Australian distributor Convergent Water Controls (CWC).

Designed for high throughput, this model features: a five‑point alignment system; reinforced hanger; chocolate pattern distribution area; glued gasket; leak chamber; fixed bolt head; tightening bolt cover; pressure plate roller; lining; lifting lug; and a bearing box. Alfa Laval says the MA30 can deliver high energy efficiency at low operating cost. Its flexible configuration allows the heat transfer area to be modified.

The product uses RS485 serial communication, and allows for BCMS monitoring of critical variables, such as conductivity, pH, ORP, temperature and external mA inputs if third-party devices are monitored too, such as corrosion rate transmitters.

The performance can be extended with Alfa Laval’s 360° Service Portfolio, which provides customers access to the company’s global service network, spare parts and service teams.

CWC says you can determine in real time the status of all the outputs, such as dosing pump and bleed power status; manifold flow status; power supply and alarm status; and status of chemical tank levels, if optional level switches are installed.

Go to: www.alfalaval.com ■

If you choose to have the Modbus RTU card fitted to your Digichem Plus+ controller, you can still have a 4G modem fitted, in order to be able to monitor and track your system on-line from any browser via www.digichemplus.com.

Cool connection

Mitsubishi Electric Australia has expanded its “off-the-shelf” inverter driven e-series modular chiller line-up by adding new 150kW and 180kW modules. The new top‑discharge air-cooled modular chillers offer part-load efficiencies, improved energy savings, reduced footprint and a host of advanced features and benefits, says the company. These modules are available as both heat pump and cooling-only options.

Go to: www.cwc.com.au ■

Data is king

RC-Reporter 3.7 is a building performance reporting solution from Reliable Controls that is designed to extract intelligence from building data and discover actionable insights to improve operational efficiency.

With four high‑efficiency inverter scroll compressors operating as two pairs in each module and the ability to connect up to six individual modules into one system, the additions allow part-load efficiencies.

The reports can be delivered automatically by email or integrated directly into building control systems. RC‑Reporter 3.7 allows users to build custom reports quickly by selecting and configuring report components.

Another key feature of the range is optimum frequency control. Mitsubishi Electric says this can improve overall efficiency of the mechanical plant whether it comprises a single module or even up to 24 modules.

You can also select multiple ranges of time-series data from multiple RC-Archive databases. Users can configure report charts to be displayed in RC‑Studio System Groups, and can run simple and complex queries to refine data used in report components.

The new units also have a smaller footprint than the existing 90kW e-series modules. Each slim unit can be positioned in a bank of up to six connected units using the same internal header, saving on piping space and equipment costs.

Standard maths functions can also be applied. Reports can be saved securely on the RC-Reporter server. They can also be imported from and exported to other RC-Reporter installations. Alternatively, they can be exported in PDF format.

Go to: www.mitsubishielectric.com.au ■

Go to reliablecontrols.com ■

Bambino on board

Dwyer Instruments has released the Series IEFB, a fieldadjustable insertion thermal energy meter that uses electromagnetic technology to accurately and reliably measure fluid velocity and energy consumption.

The FyreBOX Slab-Mount Bambino is an Australian‑made passive fire penetration system from Trafalgar. The company says the latest addition to its FyreBOX Range has been specifically manufactured for individual trades, primarily HVAC&R.

Trafalgar says the product allows the installation of services before or after the erection of the wall, providing predictable site costs, a reliable method of fire stopping, and freedom from dependence on other onsite contractors.

Measured consumption

The FyreBOX Slab-Mount features a patented two-piece, clip-together design. The company says the design was developed for high-rise residential apartments, allowing for multiple services to be run quickly and easily prior to wall construction.

The high-accuracy IEFB is adjustable to fit pipe sizes from 4–10" (100–250mm), while the standard-accuracy IEFB fits pipe sizes 4–36" (100–900mm). “The IEFB incorporates a temperature meter and a calculator into a single unit,” says Dwyer. “The LCD display provides clear readings of the meter’s values, including temperature and energy consumption, making it ideal for installation on chillers, boilers, and other heating and cooling applications.

The FyreBOX is a permanent system that will not require fire stopping again for the life of the building, says Trafalgar.

“The high measuring accuracy and long lifetime keeps annual operating costs at a minimum. In addition, it offers several output options, including selectable BACnet MS/TP or Modbus RTU communications protocol over 2-wire RS-485 and standard analog, frequency, and alarm outputs.”

Go to: www.tfire.com.au ■

Go to: www.dwyer-inst.com.au ■

HVAC&R Nation

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August–September 2020

Toolshed 7

Ready for the summer

Seeley says the CW-6S offers up to 80 per cent lower energy costs when compared to equivalent reversecycle systems. This is attributed to its indirect evaporative counter-flow heat-exchange core, which provides hyper‑efficient cooling of outside air. The company says the airflow system has the added benefit of supplying 100 per cent fresh, cool air into a building, increasing indoor air quality.

As they approach their operational limits, air-cooled refrigeration plants can struggle during the summer months – just when their cooling function is most vital. The WetWall retrofit kit is designed to improve the operation and reliability of any air-cooled refrigeration installation during hot conditions. This is achieved by passing the incoming air to the condenser through a wetted pad, which pre-cools the air through evaporation, says its manufacturer, Mueller Industries

Go to: www.seeleyinternational.com ■

According to the company, the resulting benefits are: lower condensing temperatures during the hotter parts of the year; improved CoPs; lower energy use; and reduced risk of plant outages due to high pressure and temperature.

Promek Technologies has released its Power Pack range of HVAC&R cleaning and sanitising products. These germ-fighting products are designed to eliminate mould, bacteria and other microbial agents from filters and heat exchange surfaces.

Go to: www.muellerindustries.com ■

The new Wizard

The Climate Wizard CW-6S is the new model in Seeley International’s series of indirect evaporative air conditioning products for commercial and industrial use. Using the company’s latest micro-core design, the CW-6S is claimed to offer better energy efficiency, with a more compact footprint. The smaller build and design makes it an alternative for buildings where reverse-cycle is the only option, and where roof space is restricted. Rapid Recovery-AGAS HVAC&R Nation HP.pdf

22/4/20

Cleaning Power

The range includes a Power Filter Sanitiser to stop mould and bacteria from colonising the filter face and fibres. It also has a Power Enzyme Coil Cleaner, which Promek says is an environmentally friendly, highly concentrated enzyme‑based cleaner that digests slime, mould and dirt from HVAC and refrigeration coils.

Finally, the pack contains Power Condensate Pan Tablets, designed to protect the condensate pan from contamination and odour. Go to: www.promektechnologies.com.au ■

1:41 pm

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August–September 2020

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9/04/2020 4:17:54 PM

HVAC&R Nation

Global Update

CANADA

JAPAN

ARE HFOs HAZARDOUS?

CHILLS DOWN YOUR SPINE

Many consider HFOs a viable zero ozone-depleting and low-GWP alternative refrigerant to hydrofluorocarbons (HFCs). However, concerns have been raised about the toxicity of pure HFOs breaking down in the environment and producing trifluoroacetic acid or TFA. It is thought that the build-up of TFA in rivers and lakes through precipitation may pose an environmental threat. New research by York University and Environment and Climate Change Canada adds credence to these concerns. Using Arctic ice cores, the team studied changes in the presence of short-chain perfluoroalkyl carboxylic acids (scPFCAs) such as TFA. They found a tenfold increase in these chemicals since 1990. The research suggests a strong link between the increase and the phasing down of ozone-depleting chlorofluorocarbons (CFCs) via the Montreal Protocol, which led to the uptake of CFC replacements that are sources of TFA. ■

Next time summer rolls around, there might be a new gadget on the worksite. Fujitsu has developed a wearable device that gently cradles your neck while cooling you down. The Cómodo gear uses ventilation, water-cooling and Peltier elements to lower body temperature. It does this by cooling blood flowing through the carotid artery, and transferring the heat to a water-cooled heat sink worn on the waist. The Cómodo gear is aimed at outdoor workers, or those operating in an environment with no access to air conditioning – such as the construction, security and event industries. The cooling effect is said to be maintained even at temperatures exceeding 35˚C. The NFC- and Bluetooth-enabled device runs on a battery that lasts approximately 2–4 hours per use. In-development versions of the neck-worn air conditioning unit also include biometric sensing, monitoring and communication features. ■

TANZANIA

CHINA

PAY AS YOU COOL

CHINA TO TACKLE HFCs

Daikin is delivering its air conditioning services to Tanzanians via a rental model. Targeting small shops and homes, the rental service is priced low ($1.70) in a bid to crack the African market. Without having to incur any up-front costs, the end-user simply unlocks the AC service by paying the daily rate through a smartphone app. The service is provided in partnership with Wassha, a Japanese start-up that has developed an innovative electric power service business in the region. Using IoT technology, Wassha provides the rental of LED lanterns in the off‑grid areas of sub-Saharan Africa, including Tanzania. In a market dominated by more affordable Chinese and Korean AC brands, Daikin’s business model is designed to tap the growth potential of the African market. Air conditioning is available to 1 per cent of companies and households in the region. ■

China has proposed a national plan to deal with hydrofluorocarbons (HFCs). The plan recommends adjusting the existing regulations dealing with Ozone Depleting Substances (ODSs) to cover HFCs, and to strengthen monitoring and enforcement of existing measures. It also proposes adding HFCs to existing regulations consistent with implementation of the Kigali Amendment, including a quota system that gradually reduces the production and consumption of HFCs for controlled uses. China has not officially ratified the Kigali Amendment to the Montreal Protocol, but this initiative could achieve similar results. Climate campaign lead at the Environmental Investigation Agency (EIA), Avipsa Mahapatra, says the draft plan demonstrates a clear intent to tackle these potent greenhouse gases. “This new proposed plan gives grounds for hope that China is committed to implementing systemic changes that will bolster the global momentum away from these harmful gases,” she says. ■

HVAC&R Nation

www.airah.org.au/nation

August–September 2020

DA12

KEEPING YOU AND YOUR CLIENTS COOL – FOR LESS

ENERGY EFFICIENCY IN COLD ROOMS

DA12

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••• 8

ENERGY EF IN COLD FICIENCY ROOMS

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New for N f 2 2020, 020 0, DA12 0 DA12 2 is is tthe h d definite efi reference ref re ef eference e for fo or walk-in cold room energy en nergy efficiency e cy y in Australia Australia. ia a It is designed for engineers, refrigeration technicians and contractors, as well as equipment owners, operators and specifiers. Using DA12 will help all stakeholders overcome the barriers to improved energy efficiency in cold room operation. Anyone involved in the design, construction, commissioning, operation, maintenance and documentation of energy-efficient walk-in cool rooms and freezers should keep a copy of this manual handy.

Access your electronic version or order your hard copy online at airah.org.au/DA_Manuals/DA12 August–September 2020

www.airah.org.au/nation

HVAC&R Nation

Feature

TAKING A POSITION Industry concerns around licensing and minimum qualifications have seemingly spanned generations. But as Sean McGowan reports, a position statement released by AIRAH – together with feedback from more than 900 industry members – are the building blocks on which a compelling case for change is being made. For decades now, the licensing debate has been the one topic in Australia’s HVAC&R industry that has consistently been spoken about far and wide – from coolrooms to boardrooms, and by anyone who has a stake in the sector.

This led to the STG calling on AIRAH to champion the cause and take the lead as a peak HVAC&R industry body – a role the Institute has duly accepted. “AIRAH sees HVAC&R licensing as a key issue for helping to create an Australian HVAC&R industry that is highly skilled and professional, safe, sustainable and environmentally effective,” says AIRAH CEO Tony Gleeson, M.AIRAH.

But even before the COVID-19 pandemic gave us all cause to re-evaluate what business as usual should be in the months and years ahead, a deepseated determination to see meaningful change was coming from the united voices within AIRAH’s Refrigeration Special Technical Group (STG).

AIRAH’S STANCE The first step on the road to reform was for AIRAH to take a formal position, which it has done through a draft position statement on HVAC&R licensing in Australia.

Under the leadership of co-chairs Jonathon Hare, M.AIRAH, engineer at CA Group Services, and Brett Hedge, M.AIRAH, national sales and marketing manager at Kirby, the group recognised a common goal to improve the standards of the trade.

Developed by the STG and released in March 2020, the position statement is based around three key pillars: • A nationally harmonised approach to licensing that covers all refrigerants; is based on minimum standards of competency and sector of operation;

Beyond that, the group committed to doing something about it. 10

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and is supported by ongoing compliance, education, monitoring and enforcement activities. • A relevant Certificate III qualification (or equivalent) as the minimum qualification for professionals installing, commissioning, maintaining and decommissioning stationary HVAC&R systems. • Pathways to bridge the skills gap including processes for assessing relevant industry experience and officially recognising this in the form of Australian Qualifications Framework (AQF) qualifications; continuing professional development and a system for monitoring ongoing training; and transition periods to the new system to avoid skills shortages. “By defining our position on this topic, we can guarantee a consistent approach and better advocate with stakeholders and government for change,” says Gleeson.

Feature The position statement makes AIRAH’s views clear, and will also be vital in advancing the discussion across the wider industry.

Many of the participants in the survey highlighted the need for HVAC&R to be recognised as its own trade.

Hare says as well as garnering support from the “grassroots” of the industry, the position statement enables clear discussions to be had with other industry stakeholders to discover where support, as well as difference of opinion, lies. “It is incredibly important that industry stakeholders are all on the same page,” Hare says. “At this stage we are only at the start of discussions with the many stakeholders, regulators and grassroots members and licensees to coordinate support of a common position.”

STRONG SUPPORT That early work began with an online survey completed by close to a thousand participants from a broad cross-section of the industry. Conducted by AIRAH throughout April and May, the survey received strong support from the Australian Refrigeration Mechanics Association (ARMA), helping to ensure it reached the grassroots of the industry. “ARMA is the only organisation that accurately represents the tradespeople in the HVAC&R industry and having their voices heard is pivotal to understanding the many challenges HVAC&R tradespeople are forced to deal with every day,” says ARMA president, Ryan Ardill. ARMA developed a targeted flyer that was promoted via social media and direct email,

as well as distributed to refrigeration and air conditioning suppliers across Australia. This widespread promotion – and assistance from other industry bodies and the members of the STG – helped raise awareness about the survey. In the end, more than 930 people completed it, of which about 74 per cent were HVAC&R technicians and about 10 per cent were engineers. The remainder were made up of mostly apprentices, educators, and representatives from government and industry groups, manufacturers and wholesalers. “We were very happy with the number of respondents and thank everyone who participated,” says Hare.

The survey sought feedback on the key pillars of AIRAH’s position statement by asking participants to simply agree or disagree. Very strong support (over 92 per cent) was received for all three sections of the position statement. The strongest support came for AIRAH’s call for a relevant Certificate III qualification (or equivalent) as the minimum qualification for professionals installing, commissioning, maintaining and decommissioning stationary HVAC&R systems. Here, over 95 per cent of respondents agreed. “From ARMA’s point of view, this must be a bare minimum if we are to move the industry into the future,” says Ardill.

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Feature GIVING VOICE

• The safety risks around untrained technicians using new‑generation refrigerants that are often flammable, toxic or work at high pressure

As well as seeking feedback on the three key pillars of AIRAH’s position statement, the survey invited participants to provide detailed comments and voice their individual concerns and opinions. More than 750 respondents provided comments that will be used by the STG to further refine and round out AIRAH’s position statement.

• The general need for greater recognition and public awareness of HVAC&R as its own trade • The importance of pathways for long-time technicians to have their experience recognised • The potential cost of different licences required by HVAC&R technicians

“We received many good and thoughtful responses,” says Hare. “These comments will allow us to define recurring themes in opinion.”

• The appeal of continuing professional development, but also the potential difficulty of implementing it.

Some of the common points included: • The failings of the restricted licensing system for Certificate II holders and the divisions in licensing between HVAC&R, plumbing and electrical work

“The surprising thing for me was the great balance in the comments,” adds Hedge.

“What was clear is that we need a licensing scheme that works for the entire industry. The licensing scheme needs to be supported by appropriate experience and training leading to protection of consumers and ensuring safety and compliance with appropriate standards.” Hedge says many comments have also provided perspective to both sides of the debate. “There is obviously overwhelming support reiterating the types of commentary that we have heard over the years, but there has been some balance with the understanding that there will be implications stemming from licensing changes,” he says. “This is just a reminder that it is not going to be an easy task to deliver a platform that will work for all parties.”

CRUNCHING THE NUMBERS Technician 74.03% (690) Apprentice 3.76% (35) Engineer 9.55% (89) Wholesaler 1.39% (13) Manufacturer 1.93% (18) Educator 2.58% (24) Government/Industry body representative 2.36% (22) Other 4.40% (41) I agree 94.21% (878)

Breakdown of respondents by occupation

I disagree 5.79% (54)

Always 1.83% (17)

AIRAH supports a comprehensive approach to training and continuing education • A Certificate III qualification (or equivalent) should be the minimum qualification for professionals installing, commissioning, maintaining and decommissioning stationary HVAC&R systems.

Often 1.72% (16) Sometimes 5.26% (49) Rarely 16.86% (157) Never 63.91% (595) N/A 10.42% (97)

If you are an existing ARCtick licence holder, how often are you asked to present this to your customers?

I agree 95.39% (889)

I disagree 4.61% (43)

AIRAH supports the development of pathways to bridge the skills gap • Processes for assessing relevant industry experience and officially recognising this in the form of AQF qualifications • Continuing professional development and a system for monitoring ongoing training • Transition periods to the new system to avoid skills shortages.

No, I am not aware of it. 77.58% (723) Yes, I am aware of it and use it. 5.47% (51) N/A 11.16% (104) Yes, I am aware of it but do not use it. 5.79% (54)

If you are an ARCtick licence holder, are you aware there is an ARC Green Scheme to add recognition of post trade qualifications to your existing ARCtick licence?

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AIRAH supports a nationally harmonised approach to licensing • Covering all refrigerants, not just synthetic refrigerants • Based on minimum standards of competency and sector of operation • Including a separate contractor/ business licence if required • Mutual recognition arrangements of qualifications between states, and • Supported by ongoing activities to ensure compliance, including education, monitoring and enforcement of regulations.

I agree 92.38% (861)

I disagree 7.62% (71)

Feature NEXT STEPS

GETTING ON THE RADAR

As well using the survey to refine its position, AIRAH will seek to use the outcomes and comments to engage with other industry bodies and stakeholders as it seeks to discover where agreement and differences exist, and to garner support for reform. “The next step is to create a compelling case for change and look for opportunities to present it,” says Gleeson. “What we are keen to avoid is simply creating this document, and sending it to regulators who file it in a drawer. We are interested in having positive conversations and finding opportunities for change – even if they are small steps at first. The information we’ve collected through the survey can help us do that.” Among the industry bodies AIRAH has already engaged with is the Australian Refrigeration Council (ARC), administrators of Australia’s national licensing system. Gleeson says that if improvements are to be made, AIRAH needs to be “sitting in that tent”. “Step one is to build good dialogue with the regulators and the government,” he says. “Talking to ARC is a big part of that.” As for a timeframe, there is no simple answer. Hare says some changes are already occurring independently of each other, such as the introduction of the QBCC mechanical services licensing framework in Queensland, and the proposed introduction of independent state-based capstone testing. “We are hoping that AIRAH can step in with a clear position to align the various things that are happening independently across the country,” he says.

Kirby’s national sales and marketing manager Brett Hedge, M.AIRAH, says a key issue that has been recognised for many years is the lack of awareness around the HVAC&R trade, and the sub‑standard outcomes that may be evident without a consistent and recognised licensing structure.

But until HVAC&R is on the public’s radar, gaining the attention of the government will continue to be hindered.

“HVAC&R systems have a significant impact through consumption of energy and have long been recognised as a source of direct emissions through refrigerant losses,” he says.

“That includes benefits in terms of safety and the environment, as well as economic benefits. It’s important that we present a solution rather than a problem, and a compelling case for change.”

“With these two things considered, our trade has a duty of care to ensure standards are maintained and most notably, that we invest in strengthening our trade to ensure longevity and set out to improve on what we do today in readiness for the environmental challenges of the future.”

And he emphasises that it’s also about building relationships.

While neither AIRAH nor the STG are in control of the outcome, Hedge says industry members should be encouraged to know that they are willing to take up the cause.

“We will be seeking to highlight the size and importance of our industry, and then trying to quantify the benefits that a change will bring,” says AIRAH CEO Tony Gleeson, M.AIRAH.

“When representatives from the HVAC&R industry start sitting at the tables where regulations are defined, we can have positive conversations that will see regulators better appreciate who we are and what we do, and why it’s so important.” outcome of a goal that we would hope could be achievable in the next 18 months.” ■

“The voice that has come through from the survey is one that should provoke thought among decisionmakers to improve on what we have today,” Hedge says. “To all those who have had their say, we are thankful and believe that this is the first step towards an

Would you like to know more? Read AIRAH’s position statement, and explore the results of the licensing survey, at www.airah.org.au/licensing

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Green Wedge

BEAM ME UP! Will motorised scooters be welcomed on our streets? A trial of Beam e-scooters for hire in Western Australia wants to find out.

high-grip rear-wheel drive, and a dual mechanical and electronic braking system. They also come equipped with a temporary hang-tag with instructions on how to download the Beam app and use the e-scooter.

Cities in general are notorious for their traffic congestion. That’s why tech companies have been exploring alternative modes of transportation to improve urban mobility. Micro-mobility is one of the popular options. Coined by tech analyst Horace Dediu, micro-mobility encompasses motorised, non-car vehicles capable of covering distances of less than 8km.

The micro-mobility operator has developed a virtual docking system Beam’s third-generation scooters – known as the Beam Saturn – that incentivises riders to park in could be the answer to improving micro-mobility. predetermined spots through their Beam mobile app. This new technology stands the “only real-world e-scooter rider training program in contrast with the controversial dockless model that in the APAC region”. Beam also claims to be the only has been blamed for cluttering public spaces and e-scooter operator from the Asia Pacific region to obstructing foot traffic with randomly parked bikes. be officially Climate Neutral Certified (CNC).

Among the emerging micro-mobility candidates, the electric scooter is unique for its compact size and zippy qualities. Not only does it use a small amount of electricity with zero emissions, e-scooters offer a reliable, affordable and eco-friendly way of travelling. A coastal city in Western Australia has taken the first steps to test out those theories. Picked as the locality for the first e-scooter trial in the state, the City of Bunbury has inked a trading licence agreement with Beam to bring in their battery-powered two‑wheelers for a six-month trial that began in March.

“The success of any new technology depends on mass acceptance,” says Beam’s co-founder and CTO Deb Gangopadhyay. “The quicker and better we can ensure e-scooters are used and parked where they should be, the more welcoming city residents will be.”

The e-scooters feature an aviation-grade aluminium frame, 25cm tubeless safety tyres, swappable batteries,

In line with stringent Australian road safety regulations, Beam launched the “Beam Safe Academy”, providing what the company says is

A lot is (ahem) riding on the Bunbury trial. If it is a success, fleets of the purple scooters may be popping up in convenient locations throughout the state. At time of going to print, the trial had been suspended because of COVID-19, but with restrictions easing in WA, the scooters may be back soon, available for hire at landmark Bunbury locations, including the Dolphin Discovery Centre. ■

There’s a whole other world of HVAC&R to discover in Ecolibrium magazine.

Get a taste of AIRAH’s official journal at www.airah.org.au/ecolibrium To advertise in ECOLIBRIUM contact — Glenn Douglas 0411 839 667 or John McGrath 0419 556 108

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MODULE

133

PROUDLY SPONSORED BY

AIR CONDITIONING –

H E AT I N G To achieve complete air conditioning, equipment must be provided, together with the necessary controllers, to achieve the desired internal conditions under all prevailing external and internal loads.

AIRAH

Skills summary

Equipment to achieve full air conditioning must therefore be able to provide cooling, heating, humidifying, dehumidifying, filtering, purifying and distribution.

■ What?

The very important area of heating is often ignored by refrigeration and air conditioning technicians as being a different field entirely. This is, of course, not so, as heating is the winter function of most air conditioning plants, whether that heat comes from reversed refrigeration cycle, element heating or boilers. They are all part of “the system” and some practical knowledge of this field is essential.

An explanation of the five major methods of heating air and the different types of boilers used as heating plant.

■ Who?

Relevant for HVAC&R technicians, mechanical contractors, consultants, OEMs and installers operating within refrigeration, air conditioning and heating applications.

This Skills Workshop looks at five major methods of heating air, and typical heating plant.

Heating air Heating occupies a minor part of the work of air conditioners in many parts of Australia. However, in some parts of the world, heating is the major function of the plant. There are a number of ways of heating air, some of which are common here while others are more common in colder climates. Five major methods of air heating employ the following:

The choice of hot water or steam for heating depends upon many factors. With temperatures of 80°C, however, hot water is quite hot enough and it has lower capital and running costs plus the advantage that hot water boilers (unlike steam boilers) do not require full-time operators.

(a) Hot water coils in the airstream (b) Steam coils in the airstream (c) Electric heating elements in the duct (d) Steam jets directly into the airstream (e) Heat pump (reversing of refrigerant flow in the system), where the condenser becomes the evaporator and the evaporator becomes the condenser.

(a) & (b) Hot water or steam coils in the airstream

airflow

minimum 255mm

heaters

minimum 255mm

Figure 1 shows a typical layout of a duct heating system using a finned coil. Pressure-operated switch turns off the heaters should airflow rate fall below the set minimum.

steam/water outlet

air conditioner duct

heated air

steam/water inlet Fig 1 – Hot water or steam coil

Differences in the piping between steam and hot water coil applications are generally external to the coil for control of steam condensate, but the principles are identical.

Fig 2 – Electric heaters

Figure 2 shows duct heaters and fireproof material upstream and downstream of the heating elements. These are mineral-insulated, metal‑sheathed elements with or without finning. Safety protection is always installed and may be of the current, thermal or draught type designed to protect the system from overheating. Building and fire regulations and Australian Standards govern the requirements for safety controls. Thermal and current types of protection device operate on the same principle as the safety controls described in Chapter 12 of Volume 1 of Australian Refrigeration and Air-conditioning. However, Figure 2 also shows the function of a draught or airflow safety control. August–September 2020

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HVAC&R Nation

HVAC&R Skills Workshop (d) Steam jets directly into the airstream In this system, cool air travelling in the duct absorbs heat from high‑temperature injected steam. This results in warm air. However, the air also absorbs more moisture, which increases the humidity of the air supplied to the conditioned zone. Direct steam heating applications are rare in Australia. Nevertheless, where waste steam is readily available, and humidification of a “dry” atmosphere is a requirement, the system could be attractive to operators. spray chamber s t e a m

Coefficient of performance The coefficient of performance (COP) of a refrigerating cycle is an expression of the cycle’s efficiency, and is stated as the ratio of heat absorbed in the refrigerated space to the heat energy equivalent of the energy supplied to the compressor. That is:

refrigerating effect COP = heat of compression

For example, if the refrigerating effect on a given cycle was read off the pressure‑enthalpy chart as 110kJ/kg, and the heat of compression was 23kJ/kg, the COP would equal

j e t s

10 1 = 4.8 23 This means that for every 1kW input to the unit we would get 4.8kW of refrigerating effect. steam

heater

If the unit were required to heat, it would also expend the heat of compression into the conditioned area, which would further increase the coefficient of performance.

Fig 3 – Steam heating

For example:

(e) Reverse-cycle heat pump Figure 4 shows the refrigerant circuit of a typical reverse-cycle heat pump air‑conditioner, emphasising the function of the reversing valve. On the cooling cycle, high-pressure superheated vapour from the compressor discharge line is directed by this valve into the condenser (outside exchanger) and the refrigerant flow cycle is normal. outside

inside four-way reversing valve

heat rejected

heat discharged in the condenser 133kJ/kg = heat of compression 23kJ/kg COP = 5.8 This compares favourably with a 1kW heater element, where we have an energy input of 1kW and an energy output of 1kW. Actual heat pump system COPs will depend upon system design and operating conditions; however, COPs of between 3 and 4 are not uncommon. The main drawbacks with the heat pump are the high costs, both capital and maintenance, and the reduction of efficiency at low saturated suction temperatures. With air-to-air heat pumps, the heating requirement increases as the outside ambient falls. The suction temperature will also fall with the low ambient, often causing the coil to ice up, further reducing the heat transfer capabilities of the coil.

cooling

fan

The heating plant compressor

inside exchanger as evaporator

outside exchanger as condenser capillary tube

outside

• Fire‑tube boilers – coded • Water‑tube boilers – coded.

inside four-way reversing valve

heat

fan

compressor

outside exchanger as evaporator

inside exchanger as condenser

(b) Heating cycle Fig 4 – Schematic diagram of a reverse-cycle heat pump

When heating is required, the reversing valve directs the superheated vapour into the evaporator (inside exchanger). The refrigerant liquid also reverses its flow and then vaporises in the outside exchanger and returns through the reversing valve back to the compressor. Heat pumps may be designed as air-to-air, water-to-water, air-to-water, or air‑to-ground. Often in areas of extreme ambient temperatures, air-to-water or air-to-ground may be preferred to give greater consistency of energy source and operating conditions. The reason that heat pumps are often preferred to other forms of heating is their high coefficient of performance. 16

HVAC&R Nation

• Cast-iron sectional boilers • Fire‑tube boilers – mild steel, non‑coded

(a) Normal cooling

cooling

Large plants using chilled water for cooling would normally require the services of a boiler to provide winter heating, and the following types are in common use:

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Cast-iron boilers are an old type originally used with solid fuels but now adapted for gas or oil firing. Sized up to 4,000 megajoules/hour, they are now suitable for smaller air conditioning loads. They include a firebox and baffles to direct the gases, and promote contact between gases and the heating surfaces. Fire-tube boilers (non-coded) are used when unpressurised water up to 90°C is required, as for most air conditioning installations. The type features a central combustion tube from the firing point to the fire wall which is constructed of refractory materials and directs the combustion gases back through the tube bundles for two, three or four passes before reaching the exhaust stack. Water surrounds the fire‑tube bundles, providing a large heat transfer surface, as well as large water storage capacity to dampen heat fluctuations. Simple in construction and maintenance, they are suitable for servicing hot water coils, calorifiers and direct heating by radiators. However, they must not be used with fuels of a high sulphur content.

Fig 5 (a) – Typical fire‑tube boiler (Used with permission of ICI Caldale)

HVAC&R Skills Workshop When oil fuel is used, complete atomisation of the oil is necessary, and an oil burner, or dual-fuel burner, with an atomiser, preferably one which is automatically adjusted to maintain the correct oil‑air mixture as the firing rate varies with the load, is needed.

area 1st pass

area 2nd pass

area 3rd pass

area 4th pass

Fig 5 (b) – Cross‑sections of fire‑tube boiler showing gas flow back and forth in tube bundles for four passes before passing out through exhaust stack. Hot water boilers are similar to steam boilers.

Fire-tube boilers (coded) are designed to operate up to 2,000kPa pressure, with water up to 200°C and with capacities up to 27,000MJ/h. Smaller units of less than 10m² heating surface area do not need a full-time boiler attendant. In operation, they are similar to the non‑coded fire tube.

Boiler venting or fluing The clearing of combustion gases is of great importance, both for the boiler and its surrounding environment. The design of the “stack” or chimney is critical, as is the maintenance of the heat transfer surfaces to remove scale and carbons, and of the baffles which direct gas flow into a spiral motion. Fuels Many types of fuel can be used, including wood, sawdust, all forms of coal, light to heavy fuel oils, natural gas, “town” gas and LP gas. Most air conditioning boilers use either the gases or light to medium fuel oils. Operation Fuel is fed through a regulator and control valve into a multi-port burner and mixed with sufficient air for complete combustion. Blower fans are usually necessary to supply the air. body assembly register assembly

stainless steel diffuser

observation ports forced-draught fan

motor

air inlet

two-piece atomiser assembly

Photoelectric cells are used as the main safety controls, to ensure that proper ignition occurs within a set period of time. If the boiler does not ignite immediately, the fuel supply is cut off and the blower fan runs for a certain period to ensure all fuel is purged – otherwise an explosion might occur at the next ignition. Similarly, purging occurs automatically before fuel is injected prior to every ignition (light-up) after the boiler has been switched off. The correct operation of the fuel‑air mixture control and correct flame shape are necessary to ensure complete combustion and an even heating; otherwise, carbon soot can accumulate where cooler gases meet colder water tubes, reducing efficiency and increasing maintenance. Water Water temperatures between 77°C and 210°C are possible but 76°C as a minimum is most important, as below this temperature water vapour can condense out and form highly corrosive acids which will eat out the boiler. Constant water circulation is also essential to prevent stratification of the water, and to minimise the “thermal stress” of cold‑entry water contacting hot pipes, causing uneven contraction and expansion. Some leaving water is often bypassed into the incoming water to “temper” it and bring its temperature to above 76°C. System water must be regularly monitored to prevent conditions which will promote scale, corrosion and fungal growths in the piping. Control Modulation of the flow of fuel as the load varies is the key to successful and efficient boiler operation. The “shut-off” point must be below the minimum modulation point so that the boiler runs for some time with minimum fuel input before it is cut out. This prevents fuel from remaining in the boiler, and becoming an explosive hazard at the next start-up. Maintenance service Faults will be mainly with the electrical system – controls, fans, solenoids etc. – or with the fuel‑modulating valve and regulator. “Crisis” faults which cause these breakdowns usually result from electrical power surges, or the effects of contaminants in the fuel supply, and must be traced as for any refrigeration fault. Preventative maintenance involves pre-winter service, and stripping of the boiler for inspection and cleaning, and is advisable to minimise breakdowns or loss of efficiency during peak loads. Programmed maintenance involving the replacement of specific components before the end of their working life is one technique which is highly developed in areas like the aircraft industry and should be applied to heating plants where viable, using information from the manufacturer. If, for example, the manufacturer finds that a burner breaks down after 12,000 hours, the component should be automatically replaced before this time, regardless of apparent condition. ■

EDITIO

silencer/ mixing box

TION RIGERA NING LIAN REF RCE AUSTRA AIR-CONDITIO RESOU NATIONAL AND

flue gas flow control damper BR

air inlet damper

N 05

O YOU HT T BY UG O

(Used with permission of Faber Burner Company)

PROUDLY SPONSORED BY

AIRAH

Fig 7 – Example of burner for gas or oil firing

This month’s Skills Workshop has been taken from Australian Refrigeration and Air-conditioning, Volume 2, authored by Graham Boyle, F.AIRAH.

GIVIN

NCE 1920

Fig 6 – A typical water‑tube boiler as used for air conditioning

Water-tube boilers are the largest in output and capable of high pressures and temperatures, the larger models requiring onsite construction. In this type, the water is in vertical tube bundles with forced water flow through the boiler while hot furnace gases are circulated around the tubes. Figure 6 shows a typical hot water water-tube boiler.

Fig 8 – A fuel atomiser for an oil burner

THE I ND

VOLUME

Next month: Safe procedures for changing filters August–September 2020

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Cover Feature

GET WITH THE PROGRAM

Does your business need modern software smarts to make it run better? Willow Aliento looks at the ins and outs of packages for HVAC&R businesses. As the construction and engineering industry increasingly goes digital, the software marketplace is awash with packages that promise to make a tradie’s life easier, more efficient and lighter on paperwork. But working out what will give you the best bang for the buck can be a challenge. What will really deliver value? And will you end up paying for megabytes of bells and whistles you don’t really need? We consulted some experts to sort through the hype and find the right option for your business.

He explains that the industry is grappling with major issues, and technology can help address them. The first an ageing HVAC&R workforce and the difficulty many firms have finding technical staff. “The ‘grey hairs’ are retiring and there’s been a growing shortage of replacements in many developed economies because millennials typically prefer getting tertiary qualifications than entering the trades,” Brown says.

GOOD REASONS FOR GOING DIGITAL

Although this gap can be filled in the short-term by migrants and through making the professional attractive by increasing pay, he notes that that Australian and NZ trade staff are already “generally reasonably well remunerated”.

In the past 10 years, uptake of job management software has soared, according to Graham Brown, director of SmartTrade Job Management Software in New Zealand.

“Part of the long-term solution is to utilise technology to make the industry more productive, which will also make the industry more attractive to millennials.”

Another challenge lies with customers lacking an understanding of the services they are receiving – many do not believe they get value for money, particularly for compliance and recurring maintenance work – so Brown believes there needs to be far greater visibility of why the work is being done and the benefits being delivered so customers can understand the value proposition. Lack of standardisation in terms of forms and records is a contributing issue. “Field service providers typically use their own home-grown maintenance compliance check sheets and forms, [and] there’s arguably a lot of variable compliance hidden behind certifications,” Brown says. “There’s going to be increasing pressure from the government and the property sector for compliance to be standardised and transparent.”

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Cover Feature START BY LOOKING AT WHERE YOU’RE GOING

In addition to the features of a package, he says you should think about the user experience it provides. If it is too complicated to use, chances are, many people won’t want to use it.

Hugh Bowman is director of Action Coach business coaching and works with many businesses in the HVAC&R sector. He says it’s important to consider where you see your business heading in the future.

As well, take a look at how your business processes work before you talk to a software vendor, so you can find a good fit.

If you are currently a fairly small business but hope to expand and add more teams and more vehicles, or if you plan on diversifying into more areas of the trade, the right software will have features that support that growth.

A lot of software dictates

The main point of getting a software system is it simplifies managing a business and makes it easier for staff to do their work, according to Pat Turner, Business Development Manager for JCurve Solutions. The ability to automate some processes such as work orders, scheduling, quoting and customer communications can save time not only for the tradies, but also for the office staff.

how you run the business … Look for technology you can shape to how you already run it “A lot of software dictates how you run the business,” Turner says. “Look for technology you can shape to how you already run it.”

“It can mean less calls from customers and suppliers for admin staff to deal with,” Turner says.

It’s important to get a package that suits the size of your business now, but can also grow with you.

Identify also whether you need to the software to help with an operational challenge, or an accounting challenge. Where a business has multiple trades on staff such as fridgies, plumbers and electricians, Turner says a package needs to be able to accommodate the variations between how they quote, invoice and manage jobs. A good package can also cope with the varying compliance requirements and tracking how they have been met.

LOOKING AT THE OPTIONS Brown says when a tradie is shopping around for software, they should look for something that does all the basics well including customer relationship management (CRM), quoting, pricing, invoicing, forms, inventory, asset management and project management if the business does contract work. If a package lacks functions you really think you need, he says it might be best to pass on that one. Needing other software to fill functionality gaps means operating multiple software packages, something Brown says is generally inefficient and expensive. You can also end up paying for additional features you won’t actually end up using. Be wary also of packages that will require you to use an API (application interface) to fill functionality gaps. “Even if these gap-filling software packages are richly featured,” says Brown, “your ability to use the features is only as good as the API.” Bowman says the packages many SME businesses use – including simPRO, Aroflo, ServiceM8, Fergus and Tradify – all have varying functionality in terms of what they do beyond assisting with scheduling, job tracking and financial management. As a general principle, he says the more expensive packages offer more advanced features. Some of the lower priced options, while they may be a good fit for a small business with up to five tradies on staff, can “run out of abilities” when the business grows. This means more advanced applications such as reporting gross margins on jobs, or managing timesheets and tracking individual team productivity or job-type profitability, may not be available. Some of the functions Bowman says many find useful include being able to track materials, tools, parts and equipment used for a job, or upload a photo of the serial number of a part or a receipt from the supplier that is then attached to the specific job and flows across into invoicing. If a business has multiple vehicles and teams out in the field, and is tackling jobs worth upwards of $30,000, the right software will also help you see which types of jobs are generating the best return financially. While this can be done manually, which involves spending a lot of time with multiple spreadsheets, Bowman says this is administratively hard. If the software allows you to see how different types of jobs and teams are tracking more easily, you can then make informed decisions around fine-tuning quotes and invoicing. Another function offered by some packages, such as Aroflo, is the ability to get live feeds from suppliers of their current pricing. Similarly, simPRO allows you to look up materials from some suppliers and find purchasing savings by comparing prices from different suppliers.

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Cover Feature Some packages also offer the ability to message clients, suppliers or staff through the platform and keep a record of that communication.

THE PAYOFFS Turner says that the automation of processes can deliver both productivity gains – less time spent on administrivia – and provide real-time visibility of information in a way that helps you make faster decisions. For example, it may help make decisions around time and costs, or gain insight into the performance of subcontractors or suppliers. “The bigger you grow, the more important it is to have a single source of truth,” Turner says. That includes being able to have a fluid system between CRM, equipment/asset registers, inventory management, accounting and service management all connected and visible.

More manual processes mean more time spent, and labour is the most expensive part of businesses “It comes down to time – more manual processes mean more time spent, and labour is the most expensive part of businesses,” Turner says. Brown says you should consider what impact the software will have on your customers. “Is the software is going to make your business more professional, not only operationally but also in the eyes of your customers? Can the software enable you to offer more and/or better services to your customers?” And will it give them the visibility they crave so they see the value you give them? Brown says when customers suspect they are being taken advantage of, they do not stay loyal.

IT MAY NOT DO EVERYTHING Bowman notes that even with job management software, most tradies will still need separate software for the general book-keeping associated with Business Activity Statements and other routine business financials. Examples include Xero, QuickBooks and MYOB. Information from the job management packages can usually feed into these types of accounting package via an API (application interface) which is associated with each specific software.

SHOULD YOU HEAD FOR THE CLOUD? Whereas a few years back, most software was an off‑the-shelf proposition that got installed on a laptop or desktop computer, most job management and financial software is now cloud based and available via a monthly subscription.

Bowman says the monthly cost is usually classed as an operational expense for tax deductibility purposes, while set-up and training is likely to be a once-off capital investment

DO YOU NEED A SERVICE OR A PRODUCT?

There are some potential challenges to be aware of. ServiceM8 only works on iPhones, and not android devices, so you are locked into iPhones for anyone who needs to use the software. Turner says from a data security perspective, having things backed up to the cloud is more secure than having it on a local device hard drive. A laptop or desktop can get stolen, damaged or suffer a hard‑disk failure – taking all your data with it.

There are two main type of software package – software as a service (SaaS) and software as a product (SaaP). You could compare this to the difference between leasing a work ute and buying one.

When it comes to cloud providers, Turner says the data should be hosted by an Australian-based data centre or server. This ensures customer information is managed and secured in a way that is compliant with national data sovereignty laws.

The cost of a SaaP package is upfront, plus there will usually be an annual maintenance fee, says Graham Brown from SmartTrade. SaaS generally involves a recurring license fee either monthly or annually, which includes maintenance. The upfront cost is lower, but Brown says the long-term life-cycle cost might be higher.

SUPPORT MATTERS Bowman says most businesses he has come across implementing Tradify and ServiceM8 try to do it themselves. This is taking a “gruelling” amount of time and they may never actually have it fully operational.

On the other hand, SaaP product upgrades generally have to be paid for, and there may be little flexibility to easily scale up or down on features.

“It can be hard to get support and maintain motivation to get full use of all the features of many of the packages,” he says.

“Many SaaS software providers allow you to reduce your licenses without any penalty,” Brown says. “SaaS makes transactional usage charging possible – you only pay for what you use.”

An exception in this regard is simPRO. The company provides onsite support to install the package and get it running, as well as training.

Another consideration is where and how the package is hosted. SaaP is often locally installed on your own IT equipment, whereas most SaaS software is hosted online and accessed via internet on your device or IT equipment.

“That kicks things off on the right foot,” Bowman says. “Help to implement the software is crucial – it is very challenging if you don’t get a lot of help.” Brown says the reality is trade field service providers tend to encounter problems when they’re on the job. Unlike desk workers, they haven’t got the time or patience to wait – they want an immediate solution.

“SaaS means you don’t need to maintain a server in order to run the job management side of your business,” Brown says. “This saves on capital costs and means less need for third-party IT support.”

“A tradie out on the job suffering a job management software problem is likely to be a lot less patient than a desk-bound accountant wanting support from say Xero.”

IS A FREE TRIAL WORTH IT? Just like buying a ute, you might think it’s a good idea to take software for a test-drive first, and many do offer 14-day or 30-day free trials. But Brown warns that the short duration probably won’t give you a “good handle on the pros and cons of the software, particularly given you’ll likely being playing with it rather than using it for anything close to real world use”. Also, to really see how it works and get it operating in the best way for your business does take a significant commitment in time and energy, he says.

ASK YOUR PEERS WHAT’S WORKING FOR THEM To get advice on what types of packages might work for you, Turner says talking to your peers in the trade is a good place to start. “People are generous with sharing information,” he says.

That said, it also means if the internet is down the software won’t run. Or if the tech is working in an area with no mobile reception, they may not be able to log in to an online hosted job management platform.

You can also approach a software provider with a specific set of ideas about what you want a package to achieve. By setting out your criteria for success with the provider at the start, it “keeps your technology provider on their toes,” Turner says.

START OFF RIGHT TO AVOID HASSLES DOWN THE TRACK Another thing to keep in mind is once you have installed a package and started using it, if some months down the track you decide you want more functionality than it offers, it is usually not possible to move everything across to a new program. “Changing between programs is also expensive and a massive time headache,” Bowman says. That’s where first thinking about the vision for your business and going for a higher end package that will support you as and when you get there, is a smart choice. ■

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Industry profile

A MAN OF CLASS One of Australia’s best-known and most highly regarded educators is hanging up his gauge manifold. After more than 35 years at TAFE helping students in New South Wales through their studies and into the trade, Steve Smith is retiring. We caught up with him to reflect on his career and his mighty contribution to Australia’s HVAC&R industry.

year of an apprenticeship as a fitter machinist with a famous record producer (RCA Records) at the time, and although I was gaining an incredible wealth of knowledge and skills with a terrific group of sparkies, welders, toolmakers and fitters, I didn’t see eye to eye with the duty engineer.

How did you get started in the world of HVAC&R?

You can imagine my surprise and delight when I found myself, on the first day, replacing a set of belts on a Kelvinator T82 in the plant room of a supermarket in Cabramatta, then off to replace a valve plate on a Carrier 5F in an RSL club in Epping, then over to Paddy’s Market Flemington to replace a door gasket on a huge banana holding room.

My father was head of mechanical trades at Ultimo TAFE (then known as the Sydney Technical College) back in the 70s, and came home from work one evening with news that an employer in the refrigeration industry was looking for a suitable candidate for an apprenticeship. I was in the second 22

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On my way to the interview, I tried to visualise what the job could entail, only bringing to mind the domestic refrigerator we had in our kitchen!

August–September 2020

How did you get involved in education? At the wise old age of 21, believing I knew everything I needed to know, I purchased the business that I served my apprenticeship with. But my partner had very different ethics when it came to work practices and doing the right thing by your customers and it was pretty much a downward spiral from there. Once again, my father stepped in, suggesting that I become a teacher with TAFE. I didn’t give this a second thought as I knew that the wages were very low when compared to what I could make outside. But after a period of unemployment, and the arrival of my first child (a beautiful daughter), I responded to a job advertisement in the RAC teaching section at Sydney College as a technical assistant. That became the start of a new adventure that I would repeat, given my life over again!

Industry profile What are the biggest changes you’ve seen in our industry? From a technological point of view, I would say that inverters, electronic refrigerant flow controls and the oil-less compressor are standouts. They have dramatically improved control and reliability of refrigeration and air conditioning systems in every aspect of our industry.

Steve in 1978, at the tender age of 19, the day he brought home his new service van.

From an educational perspective, the pandemic has intensified the pressure from management in all colleges around the country to develop and apply online delivery and assessment methods. This works well in industries that are knowledge focused, but I’m very much against the concept being applied within industries that are skills focused. It is also being implemented for the wrong reasons – a foreseeable reduction in training costs into the future. From a personal perspective, observing the coming together of teaching colleagues from across the nation to share ideas, techniques, issues, and knowledge has been inspirational and I am very proud to have known each of them. Each deals with their individual situations with passion and resolve, as they all put in huge hours to do the right thing by their students. Any achievements that you are particularly proud of? I like to think that I have maintained a very “fair” perspective when it came to my dealings with the many students that I have interacted with over the past 35 years, even those who went out of their way to be difficult! I am particularly proud of the majority who have gone on to see success in this incredible industry. I spent many years (up till 1am every morning) teaching myself how to use a programming language called Visual Basic back in the early 90s, and used it to produce a student management system that revolutionised the way the teaching section maintained and reported assessment results. I also produced two computer-based theory assessments, one on domestic refrigeration and the other on piping layouts that would provide the student with an immediate result. These were cutting edge at the time. Most of all, I am very proud to have been part of a collective of clever and passionate individuals that have pressed for real change in the curriculum being delivered across the nation.

Any unfinished business? It strikes me as sad that after some six solid years of planning and pushing, we have not yet managed to make any real change to the course structure that is now redundant. It isn’t the fault of our industry, though, and I’m very proud of the group that came together to drive change. We have our “house” in order and we’re on the same page. It’s another industry that keeps dropping the ball and stalling our progress, and I’d like to see us moved out from under their shadow so we can progress. What do you see as the biggest challenges facing the industry over the coming years? Making our trade visible to ordinary mums and dads! Many people find solace in the fact that our industry is hidden. For them it means job security, rapidly increasing wages, and protection of contracts. But the reality is that we’ll perish if we don’t attract new blood. This is a particularly acute issue in the education system, with the majority of teachers nearing the end of their careers. By 1990, Steve was working at Ultimo TAFE and raising a family of four.

What advice would you give to someone just coming into the trade now? It’s the best choice they’ll ever make! They will come to learn many of the skills associated with being a plumber, a sparkie, a carpenter, a welder, a fitter … but none of those trades will ever know the secrets of how to make things “cool”. It’s also a job that can take you to every corner of the globe, working on new innovations, and dealing with state-of-the-art processes. There aren’t many things in the world that can operate without a fridgie on hand. My last piece of advice is one of caution. Don’t ruffle too many feathers, as we’re a relatively small industry, and it doesn’t take long for the word to get around that you’re an idiot! After so many years, have you finally perfected the “BBQ explanation” of what you do? In the past I started by saying I was a TAFE teacher but this always led into “Oh, and what do you teach?” which quickly degraded into a long and confusing discourse. These days I simply tell people I work with some of the “hottest” people in the “coolest” trade. What are you most going to miss most? I spent my life helping young – and not so young – people come to grips with the complexities of our industry, and although I have no immediate desire to return to teaching, I will miss that aspect of my life dramatically. I also spent much of that time getting to know the employers, manufacturers, associations and regulators in this grand industry. A few were difficult, but the resounding majority have been outstanding in their desire to assist when and as needed. Over the years I tried my hand at roles that exposed me to a wider part of the population working within the TAFE mechanism. These people are typically passionate and driven to provide help whenever they can. They feel a strong connection with “people” and work hard for the advancement of their community. So it’s the people that I have come to know that I will miss the most. ■

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Tech tips In-duct adiabatic humidifiers, which either spray or evaporate moisture, present a similar saving when combined with gas-fired pre-heating. For further savings, combining adiabatic humidifiers with heat recovery, such as thermal wheels or run-around coils, to provide the pre-heating can reduce the ongoing cost of humidity control to less than 10 per cent of electric steam systems. Adiabatic humidification also offers the benefit of evaporative cooling. This means the humidifier can be used in the summer to provide very economic cooling to reduce the load on mechanical chillers.

PLAN EARLY There are many things that need to be considered when deciding on product selection and humidification strategy. The earlier in the project the humidification is thought about, the more options are available and potentially a better solution can be provided. For instance, what is the available duct section length to accommodate the absorption distance? Steam introduced into a duct will need space to fully absorb in order to prevent condensation. This distance can be shortened by using specialist short-evaporation steam lances, but the overall length will depend on the quantity of steam being introduced, the air velocity and the air-on condition.

HELP WITH HUMIDIFIERS Graham Cash, NSW and ACT sales manager at Condair, offers some advice on humidification for contractors. Most HVAC contractors don’t regularly undertake humidification projects, so building up enough experience can be difficult. Here’s how to avoid some of the most common pitfalls.

expensive, but this technology can usually only deliver around ±5%RH. Although this type of humidifier is ideal for many applications, not sticking to a higher specified unit without first researching and considering all the selection criteria can cause headaches for both client and contractor.

BEWARE VALUE ENGINEERING

HOW TO SAVE COSTS

One size does not fit all when it comes to humidifiers. When deciding whether to install a lower cost alternative to a specified system, it’s important to fully understand the reasons behind the initial selection. We often see manufacturing applications that need very precise humidity control being served with electrode boiler humidifiers that are not capable of providing the required level of control. Typically, humidity control of approximately 2 to 3%RH needs resistive steam humidifiers. Installing an electrode boiler humidifier is less 24

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Traditionally, humidifiers have been seen as expensive to run due to the most popular technologies generating steam with electricity. However, there are several alternatives now for building operators looking to reduce the operating costs of humidification. Gas-fired steam humidifiers present at least a 60 per cent saving on energy costs when compared to electric steam. They have higher capital costs, but for any application needing more than 40kg/h with average use, this technology presents a rapid return on investment. August–September 2020

Considering the available energy sources can lead to a dramatic reduction in overall operating costs. In certain circumstances where an existing steam supply is available, a live-steam humidifier can be utilised to provide dry steam to an AHU. If a building has capacity in its gas-fired heating system, fitting an adiabatic humidifier could be more economical from an operational cost perspective, when taking into consideration the additional pre-heating requirements. This is, of course, necessary to ensure enough moisture from the cold water humidifier can be fully absorbed for the desired supply air condition to be achieved. Without this available heat capacity, often steam humidification is the only practical solution when retrofitting. High air velocity may prevent evaporative humidifiers being an available option, due to unevaporated droplets being carried into the airstream.

WATER QUALITY The quality of the mains water in a building must be reviewed before selecting a humidifier. An average water quality of 125–1,250μS/cm is required for an electrode boiler steam humidifier. Below or above this level and an electrode humidifier may experience issues either boiling the water or producing too much scale. Gas‑fired or resistive humidifiers can cope with a wider range of water qualities. RO water treatment is also a good solution for humidification in hard water areas, as the majority of the minerals are removed from the supply water before being introduced to the humidifier.

CONTROL LEVEL The level of humidity control needed is a major determining factor in humidifier selection. Although resistive steam humidifiers are a popular choice for close control, recently developed cold water adiabatic systems can provide a similar level of control. Hybrid humidifiers combine spray and

Tech tips evaporative technology and can deliver ±2%RH control. Gas-fired, electrode boiler or evaporative humidifiers are all capable of delivering around ±10%RH, which is fine for most applications related to human health.

There are several alternatives now for building operators looking to reduce the operating costs of humidification.

EXPERT ADVICE One of the most important things to consider when setting out on a humidifier project is to get good advice from a competent supplier. Initially, this obviously includes the product selection, so approaching a supplier with a comprehensive range allows for the most appropriate product to be proposed for a project. Also, review what support will be provided before and during an install. Being able to obtain clear guidance throughout the project will not just reduce the time onsite, it will also reduce the possibility of errors resulting in a return visit. Finally, all humidifiers need to be maintained. Check whether the supplier has spare parts available in Australia for critical installations and can undertake to service the humidifier directly or provide technical assistance, should you wish to continue to support the client in the long-term. ■ For more information contact Graham Cash at graham.cash@condair.com or on (02) 9987 2006. i0522-314 AIRAH mag Humidification Advice for contractors AD.qxp_Layout 1 24/06/2020 12:58 Page 1

HUMIDIFIERS, DEHUMIDIFIERS AND EVAPORATIVE COOLERS

Expert advice and system design

Installation advice and commissioning

Free guidance on best practice in humidity control, product strategy, selection and sizing.

Delivering the manufacturer’s expertise on-site for optimum system set-up.

Experienced technicians

Spares department

Providing reactive or planned preventative maintenance agreements.

Experienced staﬀ help you identify which part you need and get it to you quickly and eﬃciently.

      

ADVICE DESIGN MANUFACTURE SUPPLY COMMISSIONING MAINTENANCE SPARES

Humidity Control and Evaporative Cooling

August–September 2020

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Around the Nation 1

Ian Eitzen

1 MORE TIME TO WRITE-OFF

Grosvenor is moving to address the use of all applicable technologies including hydrocarbons, CO2 and ammonia, assessing the most suitable technology for the application at hand.

The government has extended the instant asset write-off scheme until December 31, 2020, a move that has been applauded by The Australian Refrigeration Association (ARC). The ARC says that giving businesses six more months to immediately claim on purchases up to $150,000 represents a win for RAC contractors.

Grosvenor employs more than 800 staff, 400 of whom are HVAC technicians. It plans to train them all in natural refrigerant technology within the next 12 months. More than 30 technicians were expected to have finished the specialist accreditation, which also includes the safe handling of R32 refrigerant, by the end of June.

The instant asset write-off scheme enables small and medium-sized businesses to deduct the value of an asset in the year of purchase – freeing up cash now, instead of having to claim deductions over several years.

The staff will complete nationally recognised courses in handling A2/A2L flammable refrigerants and hydrocarbon refrigerants. Students will receive a statement of attainment and then apply to the ARC for Green Scheme accreditation.

ARC CEO Glenn Evans, Affil.AIRAH, says that the extension will help to increase investment and keep businesses moving, in light of the uncertainty created by COVID-19.

Go to: www.gegroup.com.au ■

3 VIRTUAL GET‑TOGETHER

Go to: www.arctick.org ■

In celebration of World Refrigeration Day on June 26, AIRAH hosted the first Virtual Industry Showcase bringing together 19 exhibitors and over 250 attendees.

2 NATURAL PROGRESSION

The full-day virtual event featured an exhibitor showcase in the morning, Q&A sessions in the afternoon, followed by a networking session.

Technical services company Grosvenor Engineering Group has introduced a dedicated natural refrigerant technology service for HVAC&R systems. Through the service, the company hopes to help the Australian commercial office market reduce its carbon footprint by providing a green alternative.

“It was encouraging to have 270 people sign up for our first event of this kind, and to see the positive engagement between exhibitors and their audience via a virtual platform during the Q&A and networking sessions,” says Sarah Rix, head of marketing at AIRAH.

“The energy savings to be derived by commercial property owners through upgrading larger HVAC systems to natural refrigerant technology is material, and strong ROI business cases can be made,” says Grosvenor managing director Nicholas Lianos, Affil.AIRAH. “Presently we are working with a large shopping centre owner to upgrade a significant number of 70kW rooftop R22 package units that are at end-of-life. We are also working with two of Australia’s largest commercial property owners to utilise natural refrigerant technology chillers within the various office towers and other buildings that they own.” 26

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Condair Pty Ltd has announced the appointment of Ian Eitzen, Affil.AIRAH, to managing director. He succeeds Kevin Cronin, M.AIRAH, who retired at the end of June. As Condair’s national business development manager, Eitzen has been responsible for the continued market development of the company’s commercial and industrial humidification and in-duct evaporative cooling business across Australia. He has more than 30 years’ experience in the HVAC&R industry, including more than 15 years with Johnson Controls in Sydney. Since joining Condair, he has worked closely with Cronin and the team to develop existing relationships with consultants and contractors, as well as growing the business into new markets. “It is an honour to take over the reins from Kevin, who founded the business in 2001 under the name of Aireven,” Eitzen says. “He has developed the organisation to be Australia’s leading humidity control company.” Go to: www.condair.com.au ■

5 CBS REOPENING OFFER For a limited time, City Building Services (CBS) is offering 50 per cent off HVAC&R maintenance for businesses affected by COVID-19. The company says that the offer will be valid for six months on a new agreement and is extended to all eligible businesses affected by the pandemic.

Registered attendees were sent links to access pre-recorded exhibitor videos across five streams: Ventilation, Air Conditioning, Refrigeration, Controls/Analytics and Other. Throughout the day, they could watch the videos and submit questions, which were then answered by exhibitors during live-stream Q&A sessions that afternoon.

“This offer is valid from when the business reopens or is ready to sign a new contract,” says CBS. “Here at City Building Services, a 100 per cent Australian-owned and operated company, we understand the enormous impact this pandemic has had on our fellow Aussies in business and we are doing our part in giving back, in order to help the economy get back on their feet.”

Attendees were able to access exclusive event offers from the exhibitors, ranging from discounts to free training sessions.

With services available Australia‑wide, CBS specialises in energy efficiency audits; air quality testing; preventative maintenance; service breakdown and repairs; chemical coil cleaning; refurbishments; disinfecting; and general cleaning.

Go to: airah.org.au/showcase ■ |

4 NEW CONDAIR MD

August–September 2020

Around the Nation 5

Wayne Ferguson (left) and Simon Wood.

Mike Lenton (left) and Nick Duncan, M.AIRAH.

According to the company, all checks and maintenance come with a detailed service and dilapidation report and conform to the most recent Australian standards. Go to: www.citybuildingservices.com.au ■

6 HYDROCHEM APPOINTS NEW CEO HydroChem has named Mike Lenton as its new CEO. Lenton’s predecessor, Nick Duncan, M.AIRAH, will be moving into a full-time strategy, talent‑development and project role. Duncan has been credited with transitioning HydroChem to a national operation over the past 15 years. “Having recently completed 18 successful years as the general manager of Hydro Flow, Mike is well regarded throughout the industry for being passionate about service excellence and delivering results-focused technical solutions,” Duncan says.

the paper says the relative humidity of the indoor air should be between 30 and 65 per cent. “For people, 40 per cent is considered to be the minimum value,” the paper says. “Relative humidity in rooms is perceived as particularly pleasant at 55 per cent.” To illustrate the connection between temperature and relative humidity, it cites an example showing how a difference in indoor humidity levels (70 vs 40 per cent) at the same room temperature can result in a difference of 5°C in perceived temperature. “This is why the room temperature should not be cooled down unnecessarily in summer with an air conditioner or an HVAC unit if the indoor air humidity is not taken into account at the same time,” says the paper. “This will just waste energy unnecessarily and not increase comfort levels.” Go to: www.testo.com ■

“Complementing this is Mike’s background in industrial automation and process control, which he attained through careers with Honeywell and Mount Isa Mines.”

8 AC IMPORTER FINED

Lenton took over the reins on June 1, shortly following his involvement in a 100ML dam construction project at Mount Buller.

The Australian Department of Agriculture, Water and the Environment has fined a Victorian‑based importer and manufacturer of air conditioning equipment $12,600 for importing bulk hydrochlorofluorocarbons (HCFC) without a controlled substances licence.

“I am excited to join the HydroChem team as CEO,” he says. “Nick has done a great job leading HydroChem over the last 15 years, and I now have the opportunity to continue developing and shaping the company to ensure we provide the best customer service and the best technical solutions no matter the market sector.” Go to www.hydrochem.com.au ■

7 HUMIDITY’S HEFT Testo has released a white paper on indoor air humidity, entitled A good indoor climate: How important is indoor air humidity? The paper examines the influence of indoor air humidity on indoor climate and level of comfort. Stating the ideal temperature range for comfort air conditioning is between 20 and 27°C,

Importing HCFCs without a licence is an offence under the Ozone Protection and Synthetic Greenhouse Gas Management Act 1989. The substance, identified as R22, was supplied by an overseas equipment manufacturer to fill uncharged equipment that it had shipped to the company. The company holds an equipment licence to import equipment charged with scheduled substances. However, a controlled substances licence and HCFC quota must be held to import or export bulk quantities of HCFC. The company was also fined for using disposable cylinders to store R22. This was in contravention of the company’s Refrigerant Trading Authorisation conditions – an offence under the Ozone Protection and Synthetic Greenhouse Gas Management Regulations 1995. ■

9 COME TOGETHER Wholesaler Beijer Ref Australia and the refrigeration and air conditioning technology specialist Bitzer Australia have inked a partnership agreement that will see Beijer Ref offer the complete range of Bitzer products and services in Australia. The companies have signed a rolling one-year agreement that allows Beijer Ref Australia to offer the whole range of Bitzer products and services within its own range of Australianmanufactured products. “Bitzer enjoys a consistently strong demand among our customers,” says Beijer Ref Australia Managing Director Wayne Ferguson. “This newly fixed collaboration now gives us the opportunity to serve our customers even better and opens up new possibilities for business for both Beijer Ref and Bitzer.” Simon Wood is Bitzer Australia’s managing director. Go to: www.beijerref.com ■

10 BOOST FOR APPRENTICES The government has announced a new $2.5bn package to support training and job creation, and to help the economy recover from the impact of COVID-19. The bulk of the funding will go towards extending and expanding the Supporting Apprentices and Trainees (SAT) wage subsidy, which pays 50 per cent of an apprentice’s wages, up to a maximum of $7,000 per apprentice per quarter. The SAT will be extended from October 2020 to the end of March 2021, and will now be accessible to companies with 199 employees or fewer. The new rule will apply to apprentices employed at July 1, 2020. According to the government, it will mean an increase from 47,000 employers and 81,000 staff covered, to almost 90,000 businesses and 180,000 employees covered around the country. ■

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Cool Tech

INSTANT CHILL Forgot to put your favorite drink in the fridge before the big match? Relax! Juno can make lukewarm beverages icy cold in no time.

Juno is not just the queen of the gods in Roman mythology, but also an innovative device that has more earthly powers.

Juno can quickly chill a full-sized bottle of white wine to 10˚C in three minutes, and a bottle of beer in less than a minute. It cools beer or soft drinks right in the can, and instantly converts your hot tea or coffee into their iced counterparts.

The beverage chiller from Matrix Industries modifies the temperature of your drink using thermoelectric cooling (TEC).

With its LED strip and curvy contours, Juno looks like a tall, boxy version of Alexa. The otherwise plain black housing sports an elegant aluminum grill and three simple buttons – presets for various red or white wine temperatures, and for customising your preferred chill level.

Initially developed to rapidly chill both white and red wine to sommelier-recommended temperatures, the TEC technology achieved its intended purpose – and more.

The fuss-free design extends under the hood, where neatly arranged thermoelectric materials replace noisy compressors or harmful chemical refrigerants.

It’s received praise from the tech-media, but will Juno become a mainstream success?

The device applies TEC based on what is called the Peltier effect – the presence of heating or cooling at an electrified junction of two different conductors – to refrigerate an enclosed space.

HVAC Hygiene ad - October 2019.pdf

This solid-state refrigerator combines high electrical conductivity with good thermal insulation and highly efficient TEC materials. And there are no moving parts, 19/9/19 pm so the2:44 product is very compact.

CMY

HVAC&R Nation

www.airah.org.au/nation

August–September 2020

The LED strip changes from red to blue as Juno goes to work.

The Juno rapid chiller is now available for pre‑order on Indiegogo. It has secured over $420,000 in funding with more than 950 backers, and is currently in the prototype stage of development. At time of writing the Juno was being offered on Super Early Birds special at $360, with an estimated shipping date of August. ■

Smoko with . . .

Name: Brynn Jansen Company: Shelair Pty Ltd tice and air conditioning appren Occupation: Refrigeration industry do you work in? What part of the HVAC&R Installation and repair. industry? ut working in the HVAC&R What’s the best thing abo to do. The variety of work that I get er one year. d in the industry? Just und How long have you worke er. Favourite tool: Impact driv do you think HVAC&R industry, what If you didn’t work in the probably be in the army. you would be doing? I’d funny page. t of HVAC&R Nation? The What’s your favourite par . Dream car: Ford Falcon XR8 . Dream date: Margot Robbie

Chiko roll. Favourite smoko snack: r. Sporting hero: Roger Federe When I’m not working I’m On smoko.

…

Dream holiday: Iceland. d. Drink of choice: XXXX Gol

y Drive en to? “Carrion” by Parkwa What song did you last list : Knowledge is power. Favourite quote or saying

August–September 2020

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HVAC&R Nation

The Lighter Side This month’s Lighter Side brought to you by:

Ahead of the pack APAC Commercial HVAC AC

1 WINNER

Visit apacair.com.au for more information 2

2 GOING CHEAP ON GUMTREE – TWO EVAP COOLERS Paul took this snap while working on an away job. “Unsure if anyone has noticed something missing,” he says. ■

3 COMMON-SENSE BYPASS We are always amazed by the work put into making a system not work properly – in this case bypassing the liquid line dryer and making it completely useless. Thanks to Michael in South Australia for the pic. ■

4 RUST BUCKET Chris was sent to Lennox Head in New South Wales to pump down and de‑gas some roof-mounted aircons. Needless to say, it was a quick trip – the units had already lost their charge. ■

5 JUMPER WARMER?

1 GREAT ESCAPE “Glad I wasn’t standing next to that when it let go,” says Michael. “Gives a whole new meaning to discharge line.” ■

As good as it must feel to put on a toasty jumper on a cold winter’s day, we’re pretty sure that wasn’t the intention of whoever installed this split. Thanks to Brad in Gloucester (NSW), who took the photo when attending to a warranty call. ■

HAVE YOU COME ACROSS SOMETHING SCARY, UGLY OR JUST PLAIN FUNNY? If your entry is deemed the monthly winner, a 700ml bottle of Jim Beam will be on its way to your door. Please include a postal address with your entry. Entrants must be 18 or over. Send your hi-res (>500KB) photos to Editor, Mark Vender at mark.vender@airah.org.au

HVAC&R Nation

www.airah.org.au/nation

August–September 2020

Ahead of the pack

APAC Commercial HVAC

• Tailored flexibility for all commercial & industrial projects • Energy efficient operation • Low installation cost • Low noise As populations increase and become more urbanised, the demand for trusted, innovative HVAC cooling and heating solutions are greater than ever. Engineered and built in Australia, the industry-leading apac units are ready for new developments and are perfectly suited to replace existing apac units nearing the end of their life cycle. The new apac ranges are manufactured to superior standards, using the highest quality materials and components. Fully MEPS compliant and Quality ISO 9001 certified, apac is truly ahead of the pack.

Visit apacair.com.au for more information

August–September 2020

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HVAC&R Nation

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Extensive list of options and accessories (hydronic kit, partial or total heat recovery)

Inverter R134A Screw Chiller EWAD-TZ | 154 - 1965kWr

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4-Pipe Inverter R134A Screw Chiller EWYD-4Z | 400 - 800 kWr

commercial.daikin.com.au