Professional Heating & Plumbing Installer April 2021 by Hamerville Media Group

001_PHPI_APR21_Layout 1 04/03/2021 15:45 Page 1

APRIL 2021

RENEWABLE HEAT THE LATEST RENEWABLE FUEL TRIAL

SPECIAL REPORT A GUIDE TO PRV SELECTION

LIGHT COMMERCIAL

WILO’S NEW COLD WATER BOOSTER SET

VISIT PHPIONLINE.CO.UK FOR REGULAR UPDATES AND EXCLUSIVE CONTENT

phpi grid_Layout 1 01/03/2021 10:22 Page 1

003_PHPI_APR21_Layout 1 04/03/2021 10:56 Page 3

CONTENTS phpionline.co.uk

@phpi

@professionalplumber

April 2021 VOL. 36 NO.3 phpi@hamerville.co.uk

@phpimag

REGULARS 5

VIEWPOINT

NEWS

16 PRV SELECTION

10 INSTALL OF FAME 15 GIVEAWAYS 49 HORROR SHOW 50 PRODUCTS ROUND UP 51 PLAYTIME

SPECIAL REPORTS 16 TIPS ON PRV SELECTION

32 HEAT PUMP OPTIONS

40 MAKITA’S NEW DEMOLITION HAMMER 41 ROUNDING UP THE LATEST SOLUTIONS

18 ADVICE ON SELECTING CONCEALED BATHROOM SYSTEMS

LIGHT COMMERCIAL

WATER HEATING & PUMPS

20 PREPARE FOR THE SUMMER HOLIDAY SEASON

42 ADVANCES IN ELECTRIC WATER HEATER TECHNOLOGY

22 HYBRID HEAT NETWORKS

44 THE NEW SHOWERMATE PUMP RANGE FROM STUART TURNER

24 WILO’S NEW COLD-WATER BOOSTER SET

RENEWABLE HEAT

25 ROUND UP

28 THE OPPORTUNITIES AROUND HEAT PUMPS 30 UK FIELD TRIALS USING SUSTAINABLY CERTIFIED HVO ARE UNDERWAY

46 COULD ELECTRIC HEATING BE HOUSEHOLDS’ FUTURE CHOICE? 47 ROUND UP

32 MONOBLOCS OR SPLITS 34 COMBINING HEAT PUMPS WITH UFH 36 ROUND UP

TOOLS & EQUIPMENT 20 LIGHT COMMERCIAL SOLUTIONS

38 THE TOOL DESIGNED FOR SAFER CORE DRILLING

40 MAKITA’S LATEST ADDITION PROFESSIONAL HEATING & PLUMBING INSTALLER APRIL 2021 3

phpi grid_Layout 1 01/03/2021 10:00 Page 1

005_PHPI_APR21_Layout 1 05/03/2021 13:33 Page 5

VIEWPOINT EDITOR JONATHAN COLE phpi@hamerville.co.uk ASSISTANT EDITOR ABBIE SMITH asmith@hamerville.co.uk ADVERTISEMENT MANAGER JAKE TATUM jtatum@hamerville.co.uk NORTHERN & MIDLANDS SALES EDDIE WRIGHT ewight@hamerville.co.uk MANAGING EDITOR TERRY SMITH DIGITAL GROUP MANAGER STUART DUFF DESIGNER GEMMA WATSON GROUP PRODUCTION MANAGER CAROL PADGETT PRODUCTION ASSISTANT CLAIRE SWENDELL DISTRIBUTION MANAGER KARL CLARK PUBLISHER BRYAN SHANNON PRINTED BY WALSTEAD PETERBOROUGH LTD PUBLISHED BY HAMERVILLE MEDIA GROUP Regal House, Regal Way, Watford, Herts WD24 4YF. Tel: (01923) 237799 Fax: (01923) 246901 Copyright © 2021 PROFESSIONAL HEATING & PLUMBING INSTALLER is a business journal for those involved in the installation, maintenance and repair of heating and plumbing systems. It is available to the trade at leading heating and plumbing merchants and specialist outlets throughout the UK.

phpionline.co.uk

@phpi

@professionalplumber

phpi@hamerville.co.uk

Rising ‘interest’rates We all know the COVID-19 pandemic and the various lockdowns and restrictions imposed by the government have brought with them much suffering and heartache. But one unforeseen consequence of large numbers of people staying at home could have a positive long-term impact on professional trades. Results from one of the major DIY chains reveal significant sales across the Coronavirus period – an indication there have been many people turning their hand to DIY during lockdown. A recent report from Rated People backs this up. Its survey found that 46% of homeowners across the UK undertook a project during 2020 – with plumbing repair and maintenance featuring third on the list of most popular home improvement jobs. In the short term this could be good for plumbers, who may be called-in to rectify any DIY ‘disasters’. Moreover, this interest in home improvement could also have wider implications for the sector. Those undertaking DIY jobs may have learned first-hand the skill level required for certain tasks and with it discovered a new level of respect for installers – especially those who ‘came to the rescue’. And, while undertaking projects around the home some people may have stumbled upon a new-found love, and look to embark on a new career in the sector. While some may groan at this possibility, or be wary of increased competition, we should remember that the sector is in need of new entrants. Many believe the average age of plumbers and heating engineers is rising and one recent report by the Homeserve Foundation indicated a fifth of all construction trades workers are over 55 or will retire by 2030. Plus, there are often calls for more to be done to bring more people – especially young people – into the industry. One initiative, National Apprenticeship Week, took place in February highlighting how employers and young people can benefit from vocational opportunities. Of course, new entrants must be properly trained and qualified (and ideally have a level of experience) before entering the sector. We have all been through some dark months recently. Perhaps one silver lining will be a new found interest in, and respect for, professional trades.

Jonathan Cole

EDITOR The publishers and editor do not necessarily agree with the views expressed by contributors, nor do they accept responsibility for any errors of translation in the subject matter in this publication. Subscriptions to PHPI are available for 1 year (11 issues) at the following rates: UK £30 post paid Airmail £80 post paid Europe £50 post paid

For the latest news, plus video reviews, competitions and exclusive content, log on to the PHPI website at WWW.PHPIONLINE.CO.UK

56,339 (Certiﬁcate of Average Distribution for the issues distributed between January and December 2020)

Want to receive a digital copy of PHPI? You can sign up by using www.rdr.link/email PROFESSIONAL HEATING & PLUMBING INSTALLER APRIL 2021 5

006_PHPI_APR21_Layout 1 04/03/2021 14:46 Page 6

News

Share your thoughts with us on the industry via Twitter (@PHPI), Facebook (@ProfessionalPlumber), or by emailing phpi@hamerville.co.uk

PART L CHANGES WELCOMED BY PIPESNUG

IDEAL HEATING BOOSTS ONLINE TRAINING Ideal Heating has expanded its online learning and development solution for installers, with the addition of a new on-demand service. The company’s Expert Academy digital training platform was launched in September last year. The new, on-demand element means installers can also access a range of handy video content, tips and guides, anytime, anywhere – including when troubleshooting on the job. Tony Rossetti, Head of Technical Training at Ideal Heating, said: “We’re passionate about helping our loyal installers to provide the highest standards of service to their customers, through our best-in-class learning and development offering. The response we’ve had since launching the platform last year has been tremendous, and the addition of our new on-demand service means installers can access training and resources in a way that works for them – and that ﬁts conveniently around everything else they’ve got going on.” To register for a free account www.rdr.link/py001

6 APRIL 2021 PROFESSIONAL HEATING & PLUMBING INSTALLER

PipeSnug has welcomed the recent Government response to its consultation on the Part L of the Building Regulations, which specifies the use of pipe grommets and collars on incoming service penetrations and internal building services in new build dwellings. The new Approved Document Part L primarily addresses energy efficiency and air tightness in buildings in the lead up to the introduction of the Future Home Standard in 2025. The Government intends that the new Part L will deliver an ‘uplift’ in high-quality homes that are in line with its broader housing commitments and encourage homes that are future-proofed for the longer-term. To help ensure airtightness Part L requires pipe grommets and pipe collars, such as PipeSnug, to be ﬁtted as part of any new build dwelling. “We are obviously delighted that the benefits of pipe grommets and collars have been recognised in Part L of the Building Regulations, and we believe PipeSnug and FlueSnug are a quick and easy path to compliance,” said Alex Lever, Director of PipeSnug. For more details on the new Part L

www.rdr.link/py002

NAVIEN ‘WORLD NUMBER ONE’ IN OIL BOILERS Navien has said it ‘remains the world's number one manufacturer of oil boilers, producing and selling over 200,000 units per year around the globe’. Commenting on the industry-leading blue flame oil boiler range, Jason Davies, National Business Manager at Navien, said: “The LCB700 is truly leading the way towards a cleaner and more sustainable future. With blue flame technology set to replace yellow flame across the board, Navien remains ahead of the crowd, offering superior levels of efficiency and reliability from an economical, low emission and futureproof oil boiler.” Available as either a regular, system or combi boiler, in both internal and external models, the LCB700 has lift weights from 58kg. All boilers are SEDBUK ‘A’ rated and utilise a stainless steel heat exchanger.

006_PHPI_MAR21_Layout 1 04/03/2021 11:05 Page 7

STOPCOCKS LAUNCHES NATIONAL REGISTER OF TRADESWOMEN Stopcocks Women Plumbers is calling on tradeswomen from all industries to join its new National Register of Tradeswomen. The register, which launched officially on 1st March, has been set up in response to ongoing frustrations around the lack of visibility of and access to tradeswomen and to address concerns of vulnerable householders, some of whom feel safer with women. The not-for-proﬁt organisation also has plans to enable women to train in trades and access funds for training. “Using the register allows tradeswomen to inspire women, especially women in difficult situations, to become able to take control of their lives and make a good income for themselves and their families by training and working in skilled trades,” said co-founder Hattie Hasan MBE, “No one knows how many tradeswomen there are, and until we do we can’t measure how we’re doing or what needs to change. When you register it means you’ll count. Finally we will be counted.” Stopcocks hopes the register will provide security for vulnerable householders. “Thousands of householders have been telling us for years that they don’t feel safe not having a choice over who enters their house,” says Hasan, “Women, particularly, have been calling for more safety overall. They want the opportunity to choose who comes into their homes and for some this means choosing tradeswomen.” The register is free to join and householders will be able to access it via a freephone number 0300 770 2252 to ﬁnd suitable tradeswomen in their area. To find out more

www.rdr.link/py003

STUART TURNER ACQUIRES MIKROFILL Well known for its water boosting pumps and systems, Stuart Turner has announced the acquisition of pressurisation and HVAC specialist Mikrofill Systems Ltd. Based in Redditch, Worcestershire, Mikrofill has more than 25 years of experience producing pressurisation units for sealed system control, commercial grade boilers and water heaters. Richard Harden, CEO of Stuart Turner, said: “Adding pressurisation and hot water generation giants Mikrofill to our armoury makes us a real contender for large scale projects with complex requirements. Coupling this with our previous acquisition of Fluid Water Solutions who focus heavily into the commercial cold water booster market we’re making a drive towards offering a full system approach.” Following the deal, Mikrofill will continue to operate an as independent entity but as part of Stuart Turner.

ADEY INNOVATION ACQUIRED BY POLYPIPE ADEY, a provider of magnetic filters, chemicals and related products has announced it is being acquired by Polypipe. Matthew Webber, ADEY Chief Executive Officer, said: “We are excited to be joining Polypipe and by the growth opportunities ahead. The companies share a similar culture and philosophy, focused on delivering sustainable water and climate management solutions. The combined business will allow us better to serve our customers, which will continue to be the foundation for our future success.” Commenting on the acquisition, Martin Payne, Polypipe Chief Executive Officer, said: "We are delighted to announce the acquisition of ADEY. Polypipe’s strategy is to grow both organically and through carefully selected value-enhancing acquisitions, with a particular focus on sustainability and sectors within climate and water management. ADEY is a pioneer and market leader in the residential heating protection market, one of the fastest growing segments of the UK construction market.”

PROFESSIONAL HEATING & PLUMBING INSTALLER APRIL 2021 7

006_PHPI_APR21_Layout 1 04/03/2021 14:47 Page 8

REPORT OUTLINES RURAL DECARBONISATION A new report outlines the route to decarbonising non-domestic off-grid businesses using LPG and bioLPG. The report, by Liquid Gas UK (LGUK), the trade association for the LPG industry in the UK, found that LPG and bioLPG have the potential to replace one third of all the coal and oil currently used to heat non-domestic buildings as well as for industrial processing, saving 3.5million tones of CO2. The report explored a range of options toward decarbonising off-grid non-domestic buildings, and found that 100% electriﬁcation through heat pumps was not a credible option for off-grid buildings as around half (48%) of all non-domestic retail businesses were built before 1919 and lacked thermal insulation to ensure sufficient heating.

PLUMBERS PAY FELL IN JANUARY Earnings for self-employed plumbers fell in January – in keeping with the traditionally slow start to the year. Hudson Contract said average weekly pay was £938 during January, a fall of 6.3% on December. The company said the overall number of tradespeople on its books last month stood at 87% of pre-pandemic levels. The best-performing regions for earnings growth were the South West (up 27%), Wales (up 6.7%) and the East of England (up 0.3%). Ian Anﬁeld, Managing Director, said it was business as usual for most plumbing contractors in spite of the third national lockdown. Hudson supplies professional services to more than 2,500 construction SMEs and supplies statistics to the Bank of England on demand for skilled labour.

ELECSA BRAND TO BE RETIRED Certsure has announced plans to retire the ELESCA brand from all of its schemes. Starting in April the organisation will begin to transfer ELECSA customers over to the NICEIC brand. The transition of all ELECSA customers will be completed by November 2022. Kevan Parker, Managing Director of Certsure said: “Customers who are registered with ELECSA will be contacted six weeks prior to their renewal date. In this discussion they will be invited to transfer and will be walked through the support available. We will work with our customers to understand how it will affect them. Our aim is to make the transfer as seamless as possible. If ELECSA customers want to move across sooner, we will help with that process.” To help with the transition the company has set up a frequently asked questions www.rdr.link/py004 page on its website. For details

NEWS IN BRIEF... SNIPEF, the Scotland and Northern Ireland Plumbing Employers’ Federation, has welcomed an announcement of funding to help upskill plumbing apprentices and employees in the installation of ground and air source heat pumps. With the new Low Carbon Heat Skills Grant, the Scottish Government will be offering employers a grant covering up to 50% of the cost of necessary training courses for small to medium businesses. IDEAL STANDARD INTERNATIONAL is funding a new UK apprenticeship scheme. The company will provide funding for a number of apprenticeship positions offered by businesses within the CIPHE network to help young people gain the knowledge, skills and experience to begin a career in plumbing. David Barber, MD of Ideal Standard UK said: “It’s an incredibly exciting opportunity to lead the way in investing in young talent and apprentices as they begin their careers.”

THE NO FALLS FOUNDATION, a UK charity dedicated to preventing falls from height and helping people affected by the life-changing consequences of a fall, has published a Support Pack signposting organisations and resources that can provide advice and assistance following a fall from height in the workplace. For details www.rdr.link/py005

phpi grid_Layout 1 01/03/2021 10:01 Page 1

010_PHPI_APR21_Layout 1 04/03/2021 11:12 Page 18

Proud to support the profession al installer #InstallOfFame is designed to showcase some of the great work carried out by plumbers and heating engineers. PHPI’s #InstallOfFame will feature on Twitter and Instagram and give installers the chance to show off their finest installations… and we’ll be highlighting some of the best submissions on our website and in print. To check out the latest additions to the galleries follow #InstallOfFame on Twitter and Instagram. If you are not on social media and would like the opportunity to be included, please email your photos to phpi@hamerville.co.uk

Here are a few more examples:

g bing & Heatin m u l P s d n a J.A.Sandel

@rushbrookbaker_plumbing

@finesseheating

@s.tplumbin gandheatin g

HONEYWELL HOME ASKS… Do customers value your expertise? “They are relying on our professionalism”

Hear more from Honeywell installers at www.proudtosupport.co.uk

phpi grid_Layout 1 03/03/2021 09:36 Page 1

phpi grid_Layout 1 03/03/2021 09:37 Page 1

phpi grid_Layout 1 03/03/2021 09:37 Page 2

phpi grid_Layout 1 03/03/2021 09:36 Page 1

015_PHPI_APR21_Layout 1 04/03/2021 11:13 Page 15

GIVEAWAYS GRAB SOME GEAR

All this month’s giveaways are now on one handy webpage, meaning you only have to enter your details once! For more fantastic giveaways and competitions, www.rdr.link/py006

TACTILE TOOLS PLUMB CHUM Featured in PHPI last month, the Plumb Chum multi-tool is about the size of a carabiner and has been designed to be part of a plumber’s keyring. It has numerous functions, all on one compact tool. There’s a flat head screwdriver, a gas cabinet key, a valve grip slot, a 10mm spanner, a radiator bleed key, a wire stripper, a pry bar, a pipe de-burring tool… the list goes on. In fact, its inventors say at least 15 functions can be performed with the tool.

FOR A CHANCE TO WIN

www.rdr.link/py007

5 SAFEGUARD DRYZONE MOULD REMOVAL AND PREVENTION KIT

VAN GUARDIAN DUAL ALARM UNITS To help protect your van from opportunist tool theft we have three Van Guardian dual alarms up for grabs. Featured in the March issue of PHPI, the dual alarm is recommended by the company as a pipe carrier alarm to stop copper pipe theft and also protect ladders and assets while on a roof rack. The alarm can also be used to protect the rear cargo doors on a van to stop door tampering, lock damage and even door peel.

The Dryzone Mould Removal and Prevention Kit takes a dual action approach to killing and preventing mould. First, Dryzone Mould Eliminator is used for the removal of mould and staining. Second, Dryzone100 Mould Sanitiser is a sterilising agent that kills the remaining mould spores and prevents regrowth for extended periods, and without salt residues.

FOR A CHANCE TO WIN

www.rdr.link/py008

www.rdr.link/py009

PROFESSIONAL HEATING & PLUMBING INSTALLER APRIL 2021 15

016_PHPI_APR21_Layout 1 04/03/2021 14:48 Page 16

SPECIAL REPORT | Pressure Reducing Valves

CHOOSING PRVS

Pressure Reducing Valves are key to a safe and stable water supply. Richard Bateman, Product Marketing Manager at RWC, looks at the different factors installers need to consider when choosing these valves.

ne of the most important components of any plumbing and heating system is the pressure reducing valve (PRV). This valve not only ensures that water coming into the home is at a safe and comfortable pressure for usage, but also safeguards against pipe bursts, ﬂooded homes and people being left without water. Choosing the right PRV is therefore crucial, and there are a number of considerations to look at.

Is the PRV ‘drop tight’ The first aspect to look at is how the pressure reducing valve works. In simple terms, a PRV takes a high inlet pressure and reduces it to a lower outlet pressure. When it does this under both flow and no-flow conditions, the type of control is known as ‘drop tight’. Reliance Valves’ PRVs use a balanced spring and diaphragm to control the downstream pressure. This ‘drop tight’ feature is vital for any PRV, as this stops

16 APRIL 2021 PROFESSIONAL HEATING & PLUMBING INSTALLER

‘creeping’ – a term which is used when an increase in the downstream pressure occurs under no flow conditions. A valve that allows this ‘creep’ cannot be classified as ‘drop tight’, or in fact a true PRV, as it will eventually allow the downstream pressure to equal the upstream pressure. In short, if creep is allowed, it negates the point of using a PRV in the first place and can cause significant problems later down the line.

Picking the right PRV PRVs are sized by DN (Diameter Nominal). To pick the correct PRV, it is always important to consider four key factors: ■ The type of building (domestic,

commercial or industrial) ■ The required ﬂow rate (measured in

litres per minute (lpm), this is the volume of water needed to ﬂow through the outlet to operate effectively) ■ The required outlet pressure range ■ The ﬂow velocity

016_PHPI_APR21_Layout 1 04/03/2021 14:52 Page 17

Flow rate is the most important factor to sizing a pressure reducing valve. To work this out, you must identify how many outlets are required and what the combined maximum ﬂow rate for these will be. The chart shows the maximum ﬂow rates of both the nominal sized PRVs and the pipe size:

NOMINAL SIZE

For domestic properties, a general rule of thumb is to size the valve to fit the mains water pipe entering the property. MAXIMUM FLOW RATES (RESIDENTIAL BUILDINGS)

PRV Size (DN)

Pipe Size (Inches)

Litres per minute

15 20 25 32 40 50 65 80 100 125 150 200 250

½ ¾ 1 1¼ 1½ 2 2½ 3 4 5 6 8 10

30 48 78 120 138 216 390 540 750 1050 1500 2400 4500

The maximum flow rates of both the nominal sized PRVs and the pipe size

It’s important to go through an example to understand this fully. Let’s take a property containing just a single basin (4lpm), a toilet (6lpm), a bath (12lpm) and a kitchen tap (10lpm). If all outlets were opened at once, this gives a total flow rate required of 32lpm. This means, the PRV should be sized at 20DN. For domestic properties, a general rule of thumb is to size the valve to fit the mains water pipe entering the property. This should provide enough flow for all normal activity in a dwelling. The sizing of PRVs cannot be underestimated. If oversized, and the flow rate is constantly low, the valve seat can erode over time. This means the PRV will not be ‘drop tight’ and would allow the downstream pressure to ‘creep’.

If undersized however, the valve can become very noisy every time outlets are opened and shut. This is because of the large volume of water squeezing through the valve, causing the internal spring to vibrate under strain, also creating a ‘water hammer’ effect in the pipework.

Installation, servicing and maintenance

This valve offers flexibility too. Available with union, compression and JG Speedfit push-fit ends, installers have plenty of choice when it comes to how they wish to connect the valve. The push-fit technology is suited for tight spaces as it enables tool-free connections – and the PRV can be fitted in any orientation to suit the space requirements, which is handy for retrofit applications. WRAS approved, the valve features a single cartridge design for efficient servicing, and two test points either side to test the downstream pressure. It also features an integral strainer that protects the seat from corrosion and can be serviced to ensure optimum performance.

Safe and stable

Along with the ‘drop tight’ feature and size, think about how practical the PRV is, i.e., how easy it is to install, commission and service. For domestic-use, Reliance Valves’ 312 Compact Series PRV is most suitable. Adjustable to pressures between 1.5bar – 6.0bar, the valve’s compact design makes it quick and easy to fit and test.

It is vital that installers know all the factors when looking at PRVs. By doing so, homeowners’ water systems can be kept safe and stable, and protected from costly remedial works such as burst pipes and ﬂooding in future. For more about RWC and Reliance Valves, www.rdr.link/py010 please

PROFESSIONAL HEATING & PLUMBING INSTALLER APRIL 2021 17

018_PHPI_APR21_Layout 1 05/03/2021 13:35 Page 18

SPECIAL REPORT | Pre-wall bathroom systems

FRAME SHOW Concealed cistern WCs have become popular in recent years, driven in part by advances in pre-wall system and flush plate technology. Here Glen Peters, Technical Support Manager at Viega, looks at the key considerations when selecting concealed or wall hung pre-wall bathroom systems.

he continued popularity of minimalist bathroom designs has led to an increase in the use of wall hung fittings and concealed toilet cisterns, especially in high-end residential properties and hotels. These designs not only optimise the use of space but also create a pleasant, uncluttered aesthetic. However, when selecting pre-wall systems there are a number of factors that installers need to consider. Pre-wall frames are installed behind the

finished wall and house the pipework, connections and, in the case of WCs, the cistern and flush mechanism. They also provide a supporting structure for the sanitaryware, which can be easily connected to the pipework and bolted to the frame. The wall panels can then be fitted, and the final finish applied – as with any bathroom install. Pre-wall frames are available for WCs, washbasins, bidets and urinals.

Space savers One key consideration that installers need to think about when selecting a pre-wall frame system is the physical space requirements of the unit. Typically, the frames and mechanisms will require a void of just 200mm or less and often it is the diameter of the waste pipe that sets the minimum void space. Available on the market today are ultra-slim pre-wall cisterns and frames that can be designed to fit in a void space of just 80mm. In addition, there are corner frame options with a total depth of just 233mm which allows washbasins, WCs, bidets and urinals to be located in the optimum position in the bathroom or washroom.

18 APRIL 2021 PROFESSIONAL HEATING & PLUMBING INSTALLER

400KG

Viega’s WC and bidet frames can support up to 400kg of weight, roughly five or six times the weight of the average UK adult

Another variable that installers should consider is the loading and capacity of the frame to ensure it is robust enough to withstand normal use and intentional or accidental misuse. Installers should look for frames that have been thoroughly tested, which should include exposure to forces greater than those expected during day-to-day use. For example, Viega’s WC and bidet frames can support up to 400kg of weight, roughly five or six times the weight of the average UK adult, while the washbasin and urinal frames are tested to 150kg, in case of misuse.

018_PHPI_APR21_Layout 1 04/03/2021 14:58 Page 19

Sound advice When planning a bathroom, reducing the transmission of sound is a further consideration, especially where the bathroom is located next to a bedroom. Included in the Building Regulations guide is approved Document E, which provides advice on limiting the passage of unwanted sound through and between buildings. The document outlines the requirement that internal walls between a bedroom and bathroom should provide ‘adequate resistance to the passage of sound’. However, specifying the correct choice of pre-wall systems can also help create a quieter environment. Installers should look for pre-wall frames that are acoustically de-coupled to prevent sound being transmitted through the walls and ﬂoors.

Ease of use Furthermore, it is also important to ensure that the bathroom is easy to use for everyone, including children, the elderly and those with disabilities. The increase of multi-generational households means that this is a common requirement for residential properties. There are pre-wall frame units available that allow the height of WCs and washbasins to be adjusted at the push of a button. For example, the Viega height adjustable WC and washbasin pre-wall elements use a gas-pressure spring to provide a smooth adjustment from 40cm to 48cm and 70cm to 90cm respectively.

Flush with success An essential part of planning wall hung, and concealed systems is the selection of the flush control as this is the element that people will interact with most frequently. While there are a range of options available, quality flush plates have a number of benefits and suit a variety of different applications. Already a common sight in hotels and public spaces, flush plates are also growing in popularity for residential bathrooms. Flush plates typically have a lower activation pressure compared with some alternatives and, due to the larger surface area, applying the required force is easier. There are also touch-free products available that sense when the user’s hand is close to the panel and triggers the flush mechanism. This provides enhanced hygiene for users, and the lack of buttons or moving parts on the front of the plate means it is easy to clean – improving the cleanliness of the bathroom further. Pre-wall units provide a popular space saving, minimalist aesthetic. However, it is important to select the right system to ensure the best possible use of space as well as comfort and ease of use for users. To find out more about Viega’s range of pre-wall systems www.rdr.link/py011

020_PHPI_APR21_Layout 1 04/03/2021 16:20 Page 20

LIGHT COMMERCIAL

preparing for

With hopes for a springtime easing of restrictions and reports of an uptake in spring and summer UK holiday bookings, Neville Small, Key Accounts Director at Baxi Heating, looks at the opportunities ahead for installers.

fter a devastating year for the hotel industry, the success of the vaccine rollout and an anticipated rise in holidaymakers ‘staycationing’ in the UK this summer brings new optimism for recovery. Astute hotel owners are only too aware that a reliable and efficient heating and hot water service is key to guest satisfaction. Ensuring that the system works as intended is therefore essential to generate a warm and cosy environment, satisfy the high demand for hot showers and provide sufficient hot water for the kitchens. As such, installers and contractors can be instrumental in helping hotels get ready to bounce back.

Regular servicing

A condensing MAXXﬂo 120/200 unit was selected as the most efficient solution to satisfy the demand for hot water at the Cross Keys Hotel

If the routine service is overdue, this is will be the starting point. All heating equipment needs regular maintenance and servicing to continue to operate reliably and effectively throughout their life. An inefficient boiler or water heater can cause heating bills to increase by as much as 30%, in our experience, so neglecting maintenance is a false economy at a time when budgets may already be tight. The service should be carried out according to manufacturer instructions and using only genuine parts. This not only optimises the performance and longevity of the equipment but will ensure full compliance with an existing warranty. The service will also identify any potential problems and allow early preventative action to be taken. To reduce time, costs and disruption, look for manufacturer service kits that contain all the genuine parts required for a ﬁrst-time ﬁx.

20 APRIL 2021 PROFESSIONAL HEATING & PLUMBING INSTALLER

A Sirius three 130kW ﬂoor standing boiler provides energy-efficient heating throughout the hotel

Water quality Is there an adequate water treatment system in place? Without the appropriate treatment, scale build-up, settled sludge and microbiological contamination in a closed-circuit system can lead to inefficiencies, poor performance and potential equipment failure after even a relatively short period of time. Routine monitoring will highlight any issues early on, helping to save money in the long run. If the hotel has been closed for a period of time, it is critical when reopening the building to implement a full water treatment and legionella prevention programme. This will include pasteurisation, microbiological sampling and chlorination of domestic hot water systems where required.

020_PHPI_APR21_Layout 1 04/03/2021 16:23 Page 21

Insulation Identify any easy efficiency wins. Is the pipework lagged? Insulating and lagging pipework helps prevent freezing, corrosion, and heat loss – all of which ultimately saves on running costs and maintenance.

Forward planning Rather than patching up ageing equipment, assess the pros and cons of replacement versus repair. Will repair ultimately be uneconomical or unreliable for the hotel business, meaning that a more permanent solution is required? It’s been a difficult year, so if there aren’t the funds for a replacement at present, proactively help hotel owners plan ahead for the future work. Ask manufacturers to support with a free site visit – remote or socially distanced – to advise on the most appropriate solution and approach to meet project and budget requirements.

Optimising efficiency When carrying out a plant upgrade, consider installing a dedicated direct-ﬁred condensing water heater to meet the hotel’s high demand for hot water. This will remove the need to run boilers to heat water during the warmer months and maximise the efficiency of the heating and hot water services. For replacement boilers, choose models with a high modulation ratio as these will be able to match changing demand more accurately and will reduce constant on/off cycling. Both factors will increase boiler longevity and efficiency. Are the selected products easy to maintain, service and repair? Thinking beyond installation to the whole life costs of the equipment will help ensure that the products deliver high performance throughout their lifetime, resulting in happy customers. There’s a welcome light for us all at the end of the long COVID-19 tunnel and now is a good time for hotels to make the necessary preparations ahead of the holiday season. For more details on Baxi Heating www.rdr.link/py012

Baxi Heating explains how it assisted an 18th century hotel with a heating and hot water upgrade The award-winning Cross Keys Hotel has provided a warm and friendly welcome to visitors to the Scottish Borders since the 18th century. When guests check into the Cross Keys Hotel, their every comfort is a priority for hotel director Grant Ballantyne. So, when the heating system at the Cross Keys started to fail, he brought in project contractor Darren Paxton of DJP Heating to resolve the situation. Efficiency and reliability were the hotel’s key requirements. Added to this was the need to complete the works within the hotel’s annual two-week shutdown period to minimise downtime and disruption. After a site visit from the Baxi Heating sales team, the decision was taken to install a high efficiency, low NOx Potterton Commercial Sirius three 130kW floor standing boiler to provide energy-efficient heating throughout the premises. With a wide modulation ratio of 9:1, the stainlesssteel boiler is able to match heat load accurately, for improved efficiency and boiler longevity and reduced running costs. It also comes with a five-year warranty for extra peace of mind. An Andrews Water Heaters condensing MAXXflo 120/200 unit was selected to satisfy the demand for hot water. This unit is suited for use in hotels where the demand for hot water peaks at particular times of the day.

Straightforward installation Installation was straightforward, with the compact units able to be positioned easily within the basement plant room. Commissioning was then carried out by Baxi Heating’s engineers. “The hardest part was stripping out the old boiler” said Darren. “Despite the tight schedule, the project couldn’t have gone better,” he continued. “Even delivery was more straightforward due to using one supplier. We’re very pleased with how the work has gone,” said Grant Ballantyne. “The layout of the new equipment and the associated pipework is immaculate, and we’re delighted that the heating and hot water system has been working well ever since. “We depend on heating and hot water to keep our guests happy,” he continued. “But the service also accounts for a large percentage of our operating costs, so it made sense for us to upgrade to more energy-efficient equipment. Now we’re looking forward to trouble-free heating and hot water provision and the prospect of reduced bills in the future.” For more information on the Potterton Commercial Sirius three range www.rdr.link/py013

For further details on the MAXXﬂo EVO www.rdr.link/py014

PROFESSIONAL HEATING & PLUMBING INSTALLER APRIL 2021 21

022_PHPI_APR21_Layout 1 04/03/2021 16:17 Page 22

LIGHT COMMERCIAL

HYBRID HEAT NETWORKS

eat networks are fast-becoming the ‘go to’ option for many local authorities, housing associations and developers thanks to their strong credentials of providing heat and hot water in a high-efficiency, low carbon way. As the UK moves towards a Net Zero future, the role of heat networks will no doubt become more prominent. Many believe that heat pumps could and should be the sole heat source for heat network projects, particularly as we see the decline of CHP use. However, this may actually limit a heat network’s potential. Not just because heat pumps are not at their most efficient during the colder months, but also as it restricts the possibility of future, net low carbon fuels and increase ﬂexibility. There are alternatives which ensure heat networks have the best of both worlds.

Experience has shown that with around 40% to 60% of peak demand covered by heat pumps, over 80% of the kW’s can typically be provided through heat pumps. Heat networks typically operate below 25% of their peak demand for over half of the year, which is well suited to a heat pump. On the small number of days each year when temperatures are coldest, demand can be taken up by the peak-load boilers. This makes even more sense where air source heat pumps are used, since it is on these days with low external temperatures that their operating efficiency will be at its lowest. Heat generating plant redundancy is also not optimised by having expensive heat pumps sat waiting to kick in on the rare occasion that another heat pump goes down. Far better to meet this need through lower cost boilers and further reduce capital costs. Another beneﬁt of including a hybrid system instead of solely heat pump is that

The hybrid option A future-proof solution is a hybrid between heat pumps and peak-load boilers. These could deliver savings on both carbon emissions and capital costs. Hybrid solutions between heat pumps and peak load boilers offer a practical option to keeping capital costs under control, while still delivering signiﬁcant carbon savings.

As the UK moves towards a Net Zero future, the role of heat networks will no doubt become more prominent.

22 APRIL 2021 PROFESSIONAL HEATING & PLUMBING INSTALLER

Pete Mills, Commercial Technical Operations Manager at Bosch Commercial & Industrial, outlines why a hybrid plant room is better for heat networks.

it can support further carbon emission reductions in future. One key energy transformation that is looking more likely is the decarbonisation of the gas grid to hydrogen blends and ultimately 100% hydrogen. Coupling that with a heat network’s unique ability to adapt to multiple forms of heat that become available, will result in considerable reduction in carbon emission.

Load shifting The ability to load shift at peak times may become a valuable attribute of a heat network in the future. Hybrid systems using decarbonised gas would have the ﬂexibility to react to signals from the grid, shifting loads and reducing stress on the local system. Add in good quantities of thermal storage and you have even more ﬂexibility at your disposal. It is no surprise that many cities have already implemented district heating schemes in their regions, which will most likely increase the introduction of them across the country. However, we need to ensure the right technology mix is placed into the plant room to see the full potential on the long road to net zero 2050. For more information please www.rdr.link/py015

phpi grid_Layout 1 17/12/2020 10:03 Page 1

024_PHPI_APR21_Layout 1 04/03/2021 16:15 Page 24

LIGHT COMMERCIAL

NEED A BOOST?

Towards the end of last year Wilo UK announced the launch of a new cold-water booster set. PHPI recently caught up with Chris Perkins, Operations Director from Wilo UK, to discover more about the unit.

Why has Wilo launched the Centrum booster set into the UK market?

In which kind of applications would this product typically be used?

The Wilo-Centrum is a range of 1, 2 and 3 pump cold water booster sets for cold water pressure boosting. Designed specifically for the UK market it is fully UK drinking water regulation compliant and lab certified to meet the requirements of CE. It was designed to complement Wilo’s already expansive range of products and specifically to complete the current Wilo booster set product products. The Wilo Centrum aims to meet a technology level to meet a customer’s minimum requirements where simplicity meets functionality. Thanks to the Wilo-Centrum being manufactured in the UK, it means we are able guarantee available stock to meet short lead times requirements and emergency replacements.

The Wilo-Centrum is designed for light commercial applications where single phase power supply is preferred or the only option available. It incorporates suitable level of technology such as full variable speed controls but innkeeping with simple operation. It offers the reliability, quality and efficiency customers expect from any Wilo product. The Wilo Centrum Cold water booster set is perfect for small-medium residential properties such apartments and nursing homes, as well as small-medium commercial buildings such as office spaces.

What pump technology is used?

The Wilo-Centrum uses Wilo Helix V high efficiency pumps. Each pump is controlled by an individual variable speed drive to ensure maximum efficiency and consumption of power during of operation. The variable speed drives allow precise control of the system to ensure you only consume energy required to meet the immediate system demands. A fully contained booster set supplied on a baseplate with small physical footprint allows you to maximise the installation locations with easy set up capabilities.

This new booster set looks to be relatively small in overall size – was footprint an issue when designing Wilo-Centrum? Space is money and a valuable premium commodity. This is becoming more true in today’s plant rooms. Therefore, any Wilo

24 APRIL 2021 PROFESSIONAL HEATING & PLUMBING INSTALLER

product must consider and ﬁnd the balance between overall footprint size and easy of use but also with consideration to future maintenance of the product. The product must be maintenance friendly so the customer can ensure the full life span of product can be realised.

Are there any ‘installer friendly’ features on the new unit that makes it easier to install and set-up? The Wilo Centrum is simple and quick to set up and install, delivered to site ready for connection to water and power. Threaded connections at both end of the suction and discharge manifolds offer choice and ﬂexibility regards orientation of water connection. The single and twin pump versions are programmed directly into the variable speed drive and the three-pump version via a compact speed centre, all without complexity of standalone control panels. For more details www.rdr.link/py016

025_PHPI_APR21_Layout 1 04/03/2021 16:14 Page 36

LIGHT COMMERCIAL MORE INFO

To discover more of the latest product launches and hands-on tests from installers GO TO

www.rdr.link/py017

VIEGA Inox 1.4520 pipe ATAG COMMERCIAL XL-F Boiler A new floor-standing boiler from ATAG Commercial has been installed at Monmouth School for Girls in Wales. The 180kW XL-F floor standing unit has been supplied with an integrated plate heat exchanger as a backpack solution and replaces two old boilers. The XL-F is the most compact floor-standing unit available from ATAG Commercial, its low water content also makes it the lightest. All models can be installed in cascade in-line or back-to-back, offering installers and specifiers flexibility. The new XL-F offers outputs of 70 to 200kW from a single boiler and up to 1.6MW in cascade. www.rdr.link/py018 To discover more

Viega has expanded its range with the introduction of the new Inox 1.4520 pipe. This nickel-free stainless-steel pipe has been designed to ensure consistent quality and regular dimensions that will offer installers a competitive alternative to copper pipe in non-potable, heating and industrial applications. For safety, the piping system is marked with a copper coloured ‘not drinking water permitted’ symbol. A variety of pipe dimensions are available from 15 to 108mm, including intermediate sizing such as 64mm. To discover more www.rdr.link/py019

phpi grid_Layout 1 01/03/2021 10:03 Page 1

phpi grid_Layout 1 01/03/2021 10:04 Page 2

028_PHPI_APR21_Layout 1 04/03/2021 16:26 Page 28

RENEWABLE HEAT

p s p m u a e t H

OPPORTUNITIES AROUND

With sales of heat pumps looking to double this year, coupled with the recent government response to the Future Homes Standard which outlines plans for low carbon new homes from 2025, it’s clear that low carbon heating is playing a central role in the government’s plans to decarbonise the ways we heat our homes. Mark Wilkins, Technologies and Training Director at Vaillant, discusses how installers can successfully transition into the world of heat pumps, and how manufacturers can play an important role too.

anuary saw the long-awaited response to the UK Government Future Homes Standard consultation, which set out rigorous targets and timeframes to make all new homes use low carbon heating from 2025. And with a number of financial incentive schemes currently available for homeowners and landlords alike, such as the Renewable Heat Incentive and Green Homes Grant, we’re at a clear turning point for the heat pump market, transforming what was once a niche technology into one which looks set to experience significant growth. Yet, while the opportunity is clear, the shortage of qualified heating installers on the ground to install this technology, could prove to be a stumbling block in reaching

these targets. Support and investment in installers and infrastructure will be crucial to ensuring widescale uptake of low carbon technologies and the fact remains that to install the required 600,000 heat pumps each year by 2028, around 26,000 installers will be needed. Therefore, for those installers looking to seize the opportunity and take advantage of these new revenue schemes, the need for further upskilling and diversifying is crucial.

Accredited installers Latest figures suggest there are approximately 2,000 MCS accredited installers actively installing heat pumps. To meet the set targets, around 26,000 installers will be needed. This is compared to

28 APRIL 2021 PROFESSIONAL HEATING & PLUMBING INSTALLER

the estimated 130,000 Gas Safe Registered engineers currently fitting natural gas boilers. Many installers already hold the technical know-how and the experience of working on often complex heating systems, which means the progression into low carbon technologies is a clear next step for those looking to broaden their horizons with additional training and qualifications. Heat loss and sizing remain a key part of specifying a heat pump installation. However, mindset and approach are also important elements to consider. While heat pumps require additional time up front to measure and size the room and calculate pipe runs to work out the best suited system, the actual installation work is fairly similar to that of a conventional boiler.

028_PHPI_APR21_Layout 1 04/03/2021 16:28 Page 29

decarbonisation, modules then cover specifying and installing a heat pump. There are also a further ﬁve modules that expand on this learning to cover more technical topics including natural refrigerants and split systems. Extensive training on designing and installing our heat-pump systems, and our work with industry bodies such as CIPHE (Chartered Institute of Heating and Plumbing Engineering) and HPA (Heat Pump Association), further ensure that installers can obtain the knowledge and competencies needed to deliver quality installations.

Strong position

Training Opportunities For those seriously interested in widening their knowledge base, training is key. Manufacturer support has already proved vital in helping many installers on their heat pump journeys, from giving advice on the capabilities of ground and air source systems, to finding the right training courses. Partnering with a manufacturer also provides the opportunity to find out about products in detail and gain access to expert guidance when required. Vaillant’s online training courses on low carbon heating technologies, including heat pumps, are designed to be easily accessible. Allowing installers to build on their existing product and installation knowledge, the six in-depth modules can be taken in isolation to fill knowledge gaps, but also fit together to cover the journey from beginning to end.

Installers able to offer low carbon heating technologies to customers will undoubtedly be in a strong position to maximise every opportunity and revenue stream as the push towards net zero by 2050 continues to gain momentum. Yet, it is important to remember that when you look at the UK’s current infrastructure, alongside the diversity of the communities and existing housing stock, pinning the future on a single type of fuel or technology is overly restrictive. There is no silver bullet here, and a more complex approach is needed. While retroﬁt and existing gas grid properties could beneﬁt from the move towards boilers powered by

the six in-depth modules can be taken in isolation to fill knowledge gaps, but also fit together to cover the journey from beginning to end. hydrogen and other greener gases – and new build and off-grid properties may be better served by maximising the potential efficiency increases heat pumps offer – this division is no longer so clear cut, especially when you consider that to achieve the 600,000 annual heat pump installations, at least 50 per cent of these will need to be on grid installs. Looking at the heating landscape it’s clear there is a lot for installers to take into account, but what we do know is that, for those looking to grow and diversify, heat pumps are well worth considering and Vaillant is here to support installers with the move. For more information on the range of training courses available to installers, www.rdr.link/py020 from Vaillant

Modular approach Starting from an introductory course, explaining the workings of a heat pump and the reasons and rationale for

PROFESSIONAL HEATING & PLUMBING INSTALLER APRIL 2021 29

030_PHPI_APR21_Layout 1 04/03/2021 16:11 Page 30

RENEWABLE HEAT

OFF-GRID OPTIONS

Mitchell & Webber Director John Weedon with Zoe Milward, owner of the Cornish property which is the first in the UK to trial HVO

UK HVO trials signal a major advance for off-grid heat decarbonisation, says OFTEC CEO Paul Rose.

major step forward has been made in the development of a renewable replacement for heating oil, with the start of new UK field trials using the sustainably certified fuel, Hydrotreated Vegetable Oil (HVO). The trials, coordinated by OFTEC and fellow trade association the UK and Ireland Fuel Distributors Association (UKIFDA), are underway at more than a dozen sites across the country replicating a range of real-world settings and conditions. Further sites are expected to join in the coming months, leading to an expansive trial within the year. The first stage has gone without a hitch and initial results are highly encouraging. The near drop-in replacement renewable fuel is working very well across a variety of appliances and settings with no issues reported.

HVO pioneer The ﬁrst UK home to pioneer HVO, which is produced from waste materials and has International Sustainability and Carbon Certiﬁcation (ISCC), was a property in Redruth, Cornwall, supplied by UKIFDA member, South West liquid fuels distributor Mitchell & Webber (pictured). Switching the bungalow from heating oil to the new fossil-free HVO supply involved making some straightforward changes to the boiler. These adjustments are relatively

inexpensive at no more than £500, especially compared to the thousands of pounds it currently costs to install a completely new renewable heating technology. We’re simply changing the fuel instead of the whole appliance. Crucially, OFTEC modelling shows that switching oil heated properties to HVO would save signiﬁcantly more carbon emissions in the short to medium term than transitioning these homes to heat pumps or biomass boilers.

Financial considerations Cost is a crucial consideration for consumers switching to low carbon heating and this is underlined by a recent study, conducted by Opinium on behalf of OFTEC, which canvassed the views of more than 1,000 rural homeowners across the UK. The survey found that 55% of respondents would not pay more than £2,500 for a new green heating system. This includes a third who would not be prepared to spend any money at all, suggesting that even with the help of the newly introduced Green Homes Grants and the proposed Clean Heat Grants from 2022, existing solutions such as heat pumps and biomass boilers will remain ﬁnancially out of reach for the majority of consumers. With 65% of oil heated homes currently in the poorest EPC bands E-G, and in need

30 APRIL 2021 PROFESSIONAL HEATING & PLUMBING INSTALLER

of energy efficiency improvements costing on average £12,000 to £18,000 respectively per property, the need to minimise costs for homeowners is clear. This echoes the recommendation made by the UK Citizen Climate Assembly that the transition to net zero heat must be fair and affordable for all.

Practical solutions For decarbonisation targets to be met, consumers must have access to affordable, practical to implement solutions otherwise take up of renewable heating options will remain disappointingly low. Renewable heating fuels such as HVO should be included in the options available for off-grid homes going forward. Industry is pushing this solution with policy makers and influencers at every level – we are committed to making this happen and securing a green future for the UK’s 1.5 million oil heated homes. The HVO trials are providing an opportunity to demonstrate first hand the benefits of this approach to Ministers, MPs and others involved in heat policy development. The results will also be used to inform guidance for technicians on carrying out conversions, with work on this already underway. For more details on OFTEC www.rdr.link/py021

phpi grid_Layout 1 17/12/2020 10:03 Page 1

032_PHPI_APR21_Layout 1 04/03/2021 16:31 Page 32

RENEWABLE HEAT

MONOBLOCS OR SPLITS

Donna-Marie Evans, Marketing Manager at LG Electronics, explains why heat pumps are a sustainable heating solution and outlines some of the options available for installers.

ith recent announcements from Government about the decarbonisation of heating in the UK, the spotlight has been trained on the use of proven renewable technology to provide our heating and hot water. Heat pumps have seen a huge take up in northern Europe, Scandinavia and Canada – all of which experience far worse winters and lower temperatures than we do in the UK – and seem set to grow in importance here. One of the leading proponents of heat pump technology is LG Electronics – a name probably best known for its consumer products – mobile phones, TVs and white goods – but increasingly for a wide range if HVAC products, most notably its Therma V air to water heat pumps, which saw a 100% increase in sales last year.

Reduce emissions Air to Water Heat Pump (AWHP) systems – monoblocs or splits – present a variety of energy-saving options for a home’s heating and hot water system. By replacing a traditional gas, oil, or solid fuel system, an AWHP can reduce carbon emissions and energy usage. The device’s absorption of natural energy from external air makes it consume less energy than conventional heating systems. And they can operate successfully at low temperatures. For example, the LG Therma V split has 100% capacity at temperatures as low as -7°C – and it’s very rare for temperatures in the UK to go that low even for a day each year.

System set-up The terms ‘Split’ and ‘Monobloc’ refer to how the system is required to be set up in a home. A Monobloc is a bit like a combi boiler and is literally a ‘single block’ system, where the heat pump has all of its components – apart from the hot water cylinder which is installed in the home – located inside a heat pump unit situated outside the home.

32 APRIL 2021 PROFESSIONAL HEATING & PLUMBING INSTALLER

032_PHPI_APR21_Layout 1 04/03/2021 16:33 Page 33

Because a monobloc does not require someone with F Gas qualiﬁcations to get involved in the use of refrigerants, they are an excellent additional string to the bow of most professional heating installers, after attending a relevant training course. A split heat pump unit has both an outside unit, which incorporates the heat exchanger and refrigerant, and an internal unit which sits inside the property, usually in a utility or boiler room. Homes in the UK are suited for a monobloc air to water heat pump. A split system is an option generally for more complex installations and it can be installed up to 30m away from the home.

How THERMA V R32 Monobloc Works

Higher or lower? Low temperature air to water heat pumps produce water at a lower temperature. These systems don’t produce water as hot as a traditional boiler will as they generally only reach around 50°C at a maximum. These systems are suited to new build homes that tend to be well insulated. To be at their most effective, they operate well with either larger capacity – possibly K3 design – radiators or a higher number of radiators and/or underﬂoor heating. High temperature air to water heat pumps are designed for poorly insulated or particularly large properties and those where replacing existing radiators or improving the insulation in the home isn’t

possible. These high temperature heat pumps, offered by a few manufacturers including LG, can heat water up to 80°C. The new LG R32 Monobloc range has already had an impact on the residential heat pump market. The unit is compact, meeting permitted planning permission guidelines, has a low GWP and an energy rating label of A+++. The new Monobloc units incorporate a new Scroll Type Compressor with a seasonal efficiency improvement of 7% over the previous rotary compressor. For more information on the LG Therma V range and on the training available for www.rdr.link/py022 installers

PROFESSIONAL HEATING & PLUMBING INSTALLER APRIL 2021 33

034_PHPI_APR21_Layout 1 04/03/2021 16:09 Page 34

RENEWABLE HEAT

COMBINING HEAT PUMPS WITH UFH Heat pumps can offer energy-saving benefits for customers, especially when used with underfloor heating (UFH). Here, Steve Harris, Technical Support Engineer at Wavin Hep2O, looks at the benefits of bringing the two together and provides his top tips on installation.

FH systems already come with plenty of benefits, one of the biggest being that they save your customer money on their bills in the long run. This is because UFH operates at a lower temperature, as the pipework evenly distributes heat throughout an entire space. By using UFH, homeowners can lower their energy consumption while also reducing their energy bills by up to 20 per cent when compared to traditional heating methods. But if your customer wants to be even more energy efficient, then you might want to suggest they power their UFH with a ground source or air source heat pump.

Why use heat pumps? Heat pumps are quickly becoming a popular, sustainable alternative to traditional gas or oil systems. Demand is expected to keep on growing, especially given the Government’s numerous green initiatives to reach net zero carbon, like the expected ban on gas boilers in new builds, and the Future Homes Standard, which aims to reduce household carbon emissions by up to 80 per cent. By suggesting the use of renewable energy solutions like heat pumps to customers, you can ensure their heating system is future-proofed. So, how do they work? In a nutshell, heat pumps warm up the water though a compressor from natural heat sources – the air or the ground – reducing the amount of carbon emissions created as they transfer, rather than create, heat. Converting this low energy into a higher energy source, the pump will operate at a consistent temperature, saving more energy compared to traditional systems that require the tank to heat up fully. Because of this, their energy to heat conversion rate is incredibly efficient, with a seasonal Coefficient of Performance (COP) between three to ﬁve.

Although UFH pipes are often installed with a 200mm spacing between them, when combining with a heat pump Steve suggests placing them closer together at 100mm-150mm

Installation Tips When you come to install an UFH system with a heat pump, it’s pretty much the same process as usual. However, there are some key differences you should bear in mind before you get started.

1 I Spacing between pipes It’s expected that UFH pipes are installed with a 200mm spacing between them. However, heat pumps tend to operate at a lower temperature – they work best at 35 degrees – which means that the UFH pipes need to be closer together to distribute heat just as effectively, so they need to be spaced at 100mm-150mm. You could lay the pipework as you normally would, but that would mean the heat pump would need to operate at a higher temperature, and this would reduce its efficiency. Your customer needs to consider their heat source before you lay the pipework for UFH. So, it’s worth having a discussion with them about this, even when laying standard UFH, so they understand their options and what’s involved.

2 I Be careful with wooden joists You need to be careful when installing UFH systems within a structural wooden joisted ﬂoor. The piping can’t be laid directly over

34 APRIL 2021 PROFESSIONAL HEATING & PLUMBING INSTALLER

these supports, unless the entire floor area is over battened, and due to building regulations an area along the joist cannot be notched or drilled during installation. This reduces the amount of space you have to work with, but also the output of the UFH system. To compensate for this, the heat pump may need to work at a higher temperature, again reducing its efficiency. One solution is to lay the UFH over the top of the existing floorboards. The Hep2O Above the Floor UFH solution can be laid over any type of flooring without noticeably reducing the ceiling height.

3 I Install a buffer tank Heat pumps work best when left to run continually, rather than switching them off and on. As customers may not want them running in the warmer months, it’s a good idea to install a buffer tank for these systems, which can store any excess heat that’s generated when the temperature of the UFH is lowered. Then, when the temperature is increased again, the heat can be drawn from the buffer tank without the need to heat the whole system from scratch. This keeps energy waste to a minimum, helping make the system as efficient as possible. If you’re in the process of installing UFH with heat pumps or just generally, and need some guidance, head over to our underﬂoor heating estimator, www.hepcalc.co.uk. Here, you can get bespoke quotations and lists of materials you’ll need. The latest updates will also allow you to choose between different pipes, including Hep2O or Tigris K1, as well as which products are needed to connect the system to different heat sources, including heat pumps. To ﬁnd out more about the Hep2O Above the Floor UFH solution www.rdr.link/py023

To access the underﬂoor heating www.rdr.link/py024 estimator

035_phpi ad grid_Layout 1 08/03/2021 08:12 Page 35

036_PHPI_APR21_Layout 1 04/03/2021 15:54 Page 36

RENEWABLE HEAT MORE INFO

To discover more of the latest product launches and hands-on tests from installers GO TO

www.rdr.link/py025

MITSUBISHI ELECTRIC Lossnay MVHR range A residential range of Lossnay Mechanical Ventilation with Heat Recovery (MVHR) systems has been launched by Mitsubishi Electric to provide clean and healthy air for homes. Designed to extract stale air continuously and efficiently from spaces where air can become polluted with high humidity, fumes and chemicals, the system replaces indoor air with ﬁltered fresh air from outside. It also minimises the amount of energy lost by recovering the heat from the extracted air and transferring it to the supply of fresh air, so that it is nearer to the required indoor temperature. The new residential range comes with optional NOx and particulate matter ﬁltration. www.rdr.link/py026 To discover more

VIESSMANN Vitocal 100-A Designed for ease of installation in the standard British heating system, Viessmann’s newest air source heat pump, the Vitocal 100-A, is the manufacturer’s most compact model yet. The monobloc unit’s tight dimensions are appropriate for homes where space is at a premium. Its A+++ rated energy efficiency will beneﬁt end-users with low running costs. The Vitocal 100-A is a fully integrated outdoor unit that does not require a complementary indoor unit. The monobloc design means installers are not required to work on, or connect any, refrigerant-carrying parts; therefore, a refrigerant certiﬁcate is not required. www.rdr.link/py027 To discover more

GRANT Aerona³ R32 Air Source Heat Pump Four single phase air-to-water models are available in Grant’s Aerona³ R32 inverter driven air source heat pump range with outputs of 6kW, 10kW, 13kW and 17kW. All heat pumps are MCS certiﬁed, so they are eligible for the Renewable Heat Incentive (RHI) Scheme, and they also have an A+++ energy rating and high SCOP values. Both the 13kW and 17kW models have been awarded the Quiet Mark for their low noise levels. R32 refrigerant is also used which has a lower Global Warming Potential when compared with traditional refrigerants. www.rdr.link/py028 To discover more

36 APRIL 2021 PROFESSIONAL HEATING & PLUMBING INSTALLER

LG Therma V Heat Pumps LG Electronics has taken a number of steps to increase the take up of its range of air to water heat pumps. The new R32 versions of the Therma V Monobloc may be of particular interest to specifiers and traditional heating installers who can install this option without the need of having any F-Gas qualifications. The growing interest in AWHPs sees the need to train a significant number of installers to be able to install heat pumps. To aid in this, LG is offering training covering the basics of heat pump technology, design, installation and commissioning and a practical demonstration of the Therma V R32 Monobloc unit. To discover more www.rdr.link/py029

phpi grid_Layout 1 01/03/2021 10:02 Page 1

038_PHPI_APR21_Layout 1 04/03/2021 16:37 Page 38

TOOLS & EQUIPMENT

CORE Skills PHPI reflects on one plumber’s journey to bring a tool designed for safer core drilling to market.

essons of the painful variety can often have the most lasting impact, and when one plumber broke his thumb on site back in 2010 it would inspire a brand-new solution for the trades. “I was removing my core bit from my drill in the same way that pretty much every tradesman does it – and that’s by hitting a spanner with a hammer,” explained Devon based Ty Harnett. “Unfortunately, I missed and fractured a bone. That put me out of action for a couple of weeks, incurring loss of earnings as a result, which gave me plenty of time to ponder that there must be a better way.” It is a predicament with which many a tradesman can identify: because the torque tension of a drill is so powerful, the core bit will bind very tightly on the equipment, which then presents a problem when you need to remove it. Spanners are not designed to be hit with hammers, as Ty found to his cost. But, once you have successfully removed the bit, you’re then

faced with the next challenge of how to eject the waste material. Again, the solution has often been brute force, with the inherent risk of denting the metal construction of the core bit. “It was easy to come to the conclusion that what we currently had on the market was not really ﬁt for purpose but it’s much harder to come up with an alternative,” admitted Ty. “I was, however, pretty determined and sketched out a design, from which some prototypes were

38 APRIL 2021 PROFESSIONAL HEATING & PLUMBING INSTALLER

A specially designed clip means the core bit can be easily removed from a drill or extension bar

commissioned. I was then able to test these out on my own jobs and found the idea itself was sound – and the result is Clipacore.” The 47-year-old plumbing and heating engineer’s focus was on producing a solution that would not only prevent such injury, but also damage to the tools themselves. Clipacore features a quick release clip for easy removal of the core bit from the drill or extension bar, as well as an accompanying knock out tool that will safely punch the core from the core bit.

038_PHPI_APR21_Layout 1 08/03/2021 10:48 Page 39

The beauty of Clipacore is that it works in exactly the same way as any conventional core drill, but it will do it quicker and safer. Test rig A simple solution, perhaps, but behind that concept lies some complex design work to ensure that the bit’s construction is up to the rigours of the job at hand, as Ty explained: “A core drill can run at anything up to 3,000rpm, so the clip had to be incredibly robust to withstand those stresses, but also easily removable by hand when required, and that’s where the real work was required.” “As well as using the device on site, during the early stages of the product’s development many years ago, I actually built my own test rig to ensure that it was up to standard. It was a set-up that featured concrete blocks of different levels of hardness, on which the Clipacore was subjected to prolonged use. The design passed every test we could give it and it

has since been patent protected.” Ty has worked tirelessly on sourcing a manufacturer and distribution, all whilst maintaining his successful plumbing business, and has been rewarded with a product that is now establishing itself in the marketplace. “The beauty of Clipacore is that it works in exactly the same way as any conventional core drill, but it will do it quicker and safer,” concludes Ty. “Whether it’s boiler ﬂues, waste pipes, soil or gas pipes for a plumber, or extractor fans for a sparks, they will not need to change their working practices, but will save time.” For further information on the Clipacore www.rdr.link/py030

A dedicated knockout tool allows the core to be easily removed from the bit

040_PHPI_APR21_Layout 1 04/03/2021 16:42 Page 40

TOOLS & EQUIPMENT

HAMMER IT HOME

PHPI takes a look at the latest additions to Makita’s XGT 40V cordless tools, which include a new demolition hammer.

ollowing its launch last year, Makita has recently expanded its 40VMax XGT range, adding three new tools. There is a new Rotary Demolition Hammer, a 216mm Slide Compound Mitre Saw and a 230mm Angle Grinder, all of which feature the company’s brushless motor technology. Kevin Brannigan, Marketing Manager at Makita UK said: “Our XGT range of 40VMax tools offers all the beneﬁts of cordless power, such as greater ﬂexibility and improved safety, for the highest demand tasks in the toughest environments. The launch of these tools is the latest in a series of new XGT products introduced in recent months as we continue to invest in product development to give customers greater choice.”

Demo hammer

Angle grinder

The HR005GZ01 40VMax Brushless Rotary Demolition Hammer offers rotary hammer and hammer only operating modes and is compatible with SDS-MAX chisels, drill bits up to 40mm and core bits up to 105mm. It features a variable speed trigger and the company says it delivers speeds of up to 500 revolutions per minute (rpm) and up to 2,900 blows per minute (bpm) of hammer action. The Demolition Hammer also includes features designed to make it easier and safer to use. This includes Active Feedback sensing Technology (AFT), which protects the user by shutting down the tool if the rotation speed reduces suddenly. It also features the soft no load function and Anti-Vibration Technology (AVT) to reduce the levels of tool vibration and extended safe trigger times. The result of this is that the new Rotary Demolition Hammer has a vibration level of 5.0m/s² when hammer drilling.

The third new addition is the GA038GZ07 40VMax Brushless 230mm Angle Grinder. The 230mm wheel diameter makes this the largest angle grinder in the XGT range. It features an ergonomic soft grip on the tool body and a side handle that can be mounted on the left or right based on the user preference. The wheel cover position can be adjusted without the need for tools, making work easier and faster. The new grinder also beneﬁts from the AFT system, includes an electric brake to stop the wheel quickly when the motor is switched off and an anti-restart function that prevents accidental start-up.

Mitre saw The LS002GZ01 40VMax Brushless 216mm Slide Compound Mitre Saw has an easy to set mitre range of 60° to both the left and right as well as a 48° bevel range in each direction, making it simple to achieve the cut required. It also includes Makita’s Deep and Exact Cutting Technology (DXT) designed to allow accurate cutting of large workpieces. The tool offers improved dust collection when ﬁtted to an extractor, soft start and constant speed control functions as well as an electric brake to stop the blade in seconds for greater safety.

40 APRIL 2021 PROFESSIONAL HEATING & PLUMBING INSTALLER

Wireless option All three of the new additions to the XGT range also include Makita’s brushless motors and Auto-Start Wireless System (AWS) functionality when ﬁtted with an optional AWS chip. The AWS function allows the tool to connect to compatible dust extractors via Bluetooth. The wireless connection means the dust extractor can run automatically while the tool is in use, to make dust management more straightforward. To find out more about Makita’s range of www.rdr.link/py031 XGT tools

041_PHPI_APR21_Layout 1 04/03/2021 15:06 Page 41

TOOLS & EQUIPMENT MORE INFO

To discover more of the latest product launches and hands-on tests from installers GO TO

www.rdr.link/py032

MAKITA Self-righting site light The latest addition to Makita’s range of LED site lighting solutions is a self-balancing area site light. The DML810 18V self-righting site light LXT delivers up to 5,500lm and 360 degree illumination with the option for corded or cordless operation. The light unit is 787mm high and 420mm wide and has an IP54 rating when using battery power. www.rdr.link/py033 To discover more

SNICKERS WORKWEAR Hi-Vis protective wear Snickers Workwear has launched a range of Hi-Vis protective wear. With fabrics that are windproof and water-repellent, the garments have durable, colour-fast protection and have been designed to retain shape and comfort throughout their life. There is a host of garments in the range to satisfy the specific requirements of Classes 1, 2 and 3 protection levels. www.rdr.link/py034 To discover more

HIKOKI POWER TOOLS UK Cordless table saw HiKOKI Power Tools UK has launched the C3610DRJ Cordless table saw, a full size 254mm cordless jobsite table saw with an 880mm rip capacity. The saw can be used as a cordless tool, with Multi Volt batteries, or as a mains corded tool using the company’s ET36A adapter, giving users power, flexibility and convenience on site. It features a mitre gauge, blade guard, rip fence, push stick, outfeed support, two blade wrenches, a 4mm and 2.5mm hex key, and is covered by a three-year warranty. To discover more www.rdr.link/py037

HELLBERG Safety eyewear Hellberg Safety is launching a new range safety eyewear. The collection is said to ensure a consistently clear line of sight and safe vision for professional tradespeople. The eyewear can be easily combined with other PPE including ear defenders, safety helmets, and visors. The glasses and goggles have impact-resistant lenses with anti-scratch and anti-fog coating on both sides and there are styles that can be worn over prescription glasses. www.rdr.link/py035 To discover more

SPECTRE Expanded range As well as the Spectre Advanced Multi-Purpose Wood and Timber Fixing Screws a range of holesaws and screw driver bits have been added. The range of screwdriver bits, for instance, includes nut drivers, bit holders and bit sets covering Pozi, Torx and Philips in 25mm and 50mm lengths. The company has also launched a nine piece Plumbers set and a 16 piece Universal set of holesaws, all packaged in an aluminium carrying case. www.rdr.link/py036 To discover more

HB42 Anti-mould All-in-One HB42 Ultimate ’All-in-One’ Sealant & Adhesive now comes in an improved formula which includes Anti-Mould as standard. Solvent free and available in a range of colours, the sealant & adhesive can be used inside and outdoors, in the wet or dry. The added Anti-Mould formula is important to minimise callbacks for the trade working in bathrooms, wet rooms, or other areas where moisture may be present. The product is also available in sustainable Eco-Foils. To discover more www.rdr.link/py038

PROFESSIONAL HEATING & PLUMBING INSTALLER APRIL 2021 41

042_PHPI_APR21_Layout 1 04/03/2021 16:45 Page 42

WATER HEATING & PUMPS

HOT WATER OPTIONS F

Victoria Gutierrez, Marketing Manager at Ariston, looks at the advances in electric water heater technology and identifies how the latest features make them suited to a range of applications.

or many years, the approaches to providing domestic hot water (DHW) have been somewhat traditional, primarily centred around cylinder-based systems. While these have played their part, the latest electric water heaters are now an energy efficient alternative. This has led to them being fitted in a variety of applications, including loft conversions, apartments, family homes and rental accommodation. As the products only require a connection to the electrical circuit and the cold water supply, as well as some safety devices, there is no need for extensive plumbing or complex electrical work.

Space maker In modern homes, one of the key issues is space – or rather, the lack of it. Indeed, the average UK property measures just 92 square metres in size, while shrinking further in city centres. However, installers should be on hand to advise customers – whether it is a homeowner, landlord or property developer – that by simply converting to a tankless water heater system, they can help free up some much-needed space in their properties. This advice is particularly pertinent for homes with a vented or unvented hot water cylinder in the airing cupboard.

42 APRIL 2021 PROFESSIONAL HEATING & PLUMBING INSTALLER

These stalwarts are heavy and unwieldly in terms of lifting, manoeuvring and installation, while their sheer size requires a lot of floor space. On top of this, there is only a limited amount of water available in the tank, while users have to spend time waiting for units to heat up. In addition, the majority of vented cylinders are reliant upon being fed by a cold water tank housed in the loft or attic, which takes up yet even more essential space. Converting to a cylinder-free, wall mounted system is a way to maximise space. Any cylinders or immersion heaters can be removed and replaced by one of the latest, electric water heaters instead. These modern products eliminate the need for separate cylinders, while any storage tanks are actually built-in as part of the unit.

27CM

Ariston’s Velis Evo and Velis Evo Wi-Fi storage water heaters measure a mere 27cm in depth, so can be fitted inside an airing cupboard

042_PHPI_APR21_Layout 1 04/03/2021 16:47 Page 43

as electric water heaters continue to evolve, it is important to balance capacity and demand with space-saving credentials. Meeting demand However, as the need for space increases, so too does demand for hot water. So, there needs to be a balance between having larger capacity units which, at the same time, take up less wall space. Utilising a product with an ultra-slim design, such as Ariston’s own Velis Evo and Velis Evo Wi-Fi storage water heaters, provides the best of both worlds. These units not only benefit from twin tank technology, but also measure a mere 27cm in depth, so can be fitted inside an airing cupboard in place of a bulky 100-litre cylinder and open up a wealth of space-saving opportunities. Of course, modern electric water heaters have more to offer than space-saving advantages alone. Advances in ‘smart’ technology have led to some electric water heaters benefitting from built-in Wi-Fi, with the Internet of Things (IoT) enabling units to be set and activated remotely via a mobile app. This precise level of controllability ensures there is always enough hot water (or a hot shower) ready when required. Such advanced functionality also allows users to monitor their energy consumption, as well as reduce their fuel bills, which is especially important in low-income homes and rental properties. Electric water heaters already offer enhanced energy performance, as the latest products have to adhere to environmental legislation, such as ErP. This can be coupled with other sustainable functions, such as learning from the household’s daily usage, ensuring that water is only heated during the periods when demand is high. The key benefit here is that units are not left cycling during

periods when a property is empty; this could be 9am to 5pm for a typical working week or, conversely, when a commercial building or office is unoccupied during evenings or weekends.

Installation guidance Furthermore, in terms of installation, although there is no gas connection involved, fitting an unvented hot water system over 15 litres is classified as a ‘Controlled Service’ under the UK Building Regulations, so Regulation G3 applies. As a result, any large unvented unit should be fitted by a competent installer. It is also essential that, whatever the application, the electric water heater installed complies with the necessary UK regulations, such as, for example, KIWA and ErP. After all, there are a number of overseas imports that have entered the market and, without adequate testing, their

physical integrity could be compromised – while there is also a risk of the water in the units becoming contaminated. It is safer to ﬁt high quality products that not only comply to UK standards, but also have additional features such as anti-legionella functionality, to ensure there is no microbial growth. As electric water heaters continue to evolve, it is important to balance capacity and demand with space-saving credentials. Controllability also needs to be considered, to ensure end users beneﬁt from high levels of comfort and energy efficiency, which are pre-requisites for any modern appliances. By embracing electric hot water heaters with the latest most advanced functionality, installers can continue to cater for all their customers’ hot water needs. For more information www.rdr.link/py039

PROFESSIONAL HEATING & PLUMBING INSTALLER APRIL 2021 43

044_PHPI_APR21_Layout 1 04/03/2021 16:07 Page 44

WATER HEATING & PUMPS

PUMP IT UP

PHPI takes a look at the new Showermate Pump range from Stuart Turner.

mproved shower performance is a desire of many homeowners and shower pumps are familiar territory for most plumbers. A familiar name for many in the sector, Stuart Turner has recently launched a new Showermate range of bathroom and shower pumps. The company’s existing Showermate range of shower pumps – which previously consisted of Showermate, Showermate ECO and Showermate TP – has been rationalized in-line with the development of the new range. The new design, which the company believes is a ‘high performing, high quality shower

pump’, is available in three performance options; 1.5, 2.0 and 2.6 bar, universal or standard and twin or single models. Richard Ballard, National Training Manager at Stuart Turner said: “Our new Showermate range marks a great start to 2021. The previous range had grown over several years and it was time to bring them all together under one platform. Our Engineering Team has worked hard to make subtle improvements to what was already a high-quality series and have delivered an easy to install product ﬁt for new installations or replacement.”

Our new Showermate range marks a great start to 2021. The previous range had grown over several years and it was time to bring them all together under one platform. Quiet operation As with other Stuart Turner products, Showermate is classified as ‘Quiet Operation’ – anti-vibration feet are included in the design to reduce noise transmission further. The pumps are continuously rated, feature automatic switching and come with flexible 15mm x 205mm, push-fit anti-vibration hoses with ¾ BSP threaded connection to the pump. The Showermate range complements the existing, established range of Monsoon pumps to give a wide offering for installers. Fully supported by the company’s TechAssist Team, the new Showermate range carries a three year warranty and are available nationwide.

Loyalty Club Monsoon and Showermate pumps are also eligible for the company’s Installer Loyalty Club. Each pump installed automatically accrues points for the installer when registered with the loyalty program. The program is designed to reward installers of Stuart Turner domestic product and plumbers can earn points straight away by signing up. For more information on the Showermate www.rdr.link/py040 Pump range

44 APRIL 2021 PROFESSIONAL HEATING & PLUMBING INSTALLER

phpi grid_Layout 1 01/03/2021 10:02 Page 1

046_PHPI_APR21_Layout 1 04/03/2021 11:28 Page 46

WATER HEATING & PUMPS

Electric

OPPORTUNITY W

Geoff Egginton from Advance Appliances Ltd, asks: could electric heating be the future choice for households?

hen we think about heating we tend to think about space heating – keeping warm in winter – but these days demand for hot water is slowly beginning to outstrip that of space heating. The reason is quite straight forward; homes are better insulated than ever as standards for air tightness and heat loss have driven down the heating load. On the other hand, hot water demand continues to grow with the desire for properties with more than one bathroom increasing. While gas has been a staple of UK heating systems, the impact burning it has on the environment is a growing concern. Electricity can be produced from renewable resources, helping to greatly reduce the carbon footprint of a property. The Government, meanwhile, in the pursuit of ever greener energy, is pushing electricity as the main energy source in future new- builds. More and more of the electricity generated in the UK is from renewable resources, think sun, wind and water. This can be done at a macro level with groups of wind turbines, hydro schemes and solar farms, or at a micro level using roof mounted solar panels for example. The means to harvest and store this energy along with demand management, largely through ﬂexible tariffs, are being developed and improved. If the future is going to see a growth of electric heating systems what products do installers need to be aware of to meet this trend?

Mid-market electric options There are a number of ﬂexible solutions in very small dwellings such as point of use water heating and electric showers, and in much bigger properties heat pumps may be preferred. However, this article looks at a few of the electric options for space heating and hot water in the middle market. For space heating most people prefer wet systems with radiators or underﬂoor

46 APRIL 2021 PROFESSIONAL HEATING & PLUMBING INSTALLER

heating. The good news is that electric boilers for these applications have been around for many years and offer proven simple technology. Electric heating is inherently efficient at point of use as the energy input is converted directly to heat with only tiny losses. Electric boilers provide all the things that you would expect from any boiler, including the ability to modulate, and some benefits you might not expect such as not requiring flues or annual servicing. This reduces cost of installation and ongoing maintenance. In addition some are supplied for sealed system use with relief valves and expansion vessels fitted, and some include pumps. Most households will have 100 amp supplies and boilers up to 12kW (40,000BTU) will draw around 50 amps. For space heating alone in a modern middle market property this is more than adequate. Advance Appliances offer the eGlow electric boiler in three outputs: 6kW, 9kW and 12kW. The units modulate and can be supplied as standard 80°C models or underfloor models which run at 60°C. These boilers have a pump and by-pass fitted shortening installation time. A sealed system kit with an eight litre expansion vessel and filling loop is available, offering the installer flexibility when fitting. For the provision of hot water Advance offer the Electric Thermal Store in two sizes – for single bathroom or twin bathroom applications. These hot water only stores offer mains pressure hot water with safe vented storage using an internal heat exchanger. They are fitted with two 3kW immersion heaters, the lower one for an off peak overnight charge, the higher one for boost or solar PV if available. The units are stainless steel with a ten year guarantee on the cylinder.

046_PHPI_APR21_Layout 1 04/03/2021 14:16 Page 47

How do electric boilers differ from gas boilers? Electric boilers do not offer a combination of hot water and heating in one wall mounted box with the ability to generate instantaneous hot water in useful amounts. The reason is simple – power. A typical gas combi boiler is around 24kW, which would consume all of the electric energy available in the home. At this power gas combis deliver around 12 litres per minute of water at 40°C – rates vary of course with incoming water temperatures and different boiler models. Although electric combination ‘boilers in a box’ exist, their flow rates tend to suffer in comparison, typically less than half of those which gas or oil boilers can offer. There is a straightforward solution. Storage is required. There are a number of significant advantages to this. Electricity can be consumed at the best tariffs, say overnight or with flexible tariffs offering day time top ups, and used throughout the day, making the system economical.

Electricity can be produced from renewable resources, helping to greatly reduce the carbon footprint of a property. Flow rates for these mains pressure hot water cylinders can be as high as 40 litres a minute at 60°C, and with high flow rates comes the ability to run more than one shower at a time, or to have the washing machine on at the same time as the shower. Advance offer this option with central heating primaries for the best of both worlds – wet central heating and mains hot water. The central heating can be vented or sealed with the addition of a plate heat exchanger. Another advantage is the possible utilisation of solar PV (electric) which can make a significant contribution to water heating throughout the year. This unit – the ECB 210 – is suitable for systems in apartments or small dwellings running four or five radiators. It is pre-wired and pre-plumbed with heating pump fitted. It is manufactured from stainless steel and the storage unit is guaranteed for ten years.

Pump it up Heat Pumps have the highest proﬁle in the electric/renewables market and Advance has a range of compatible hot water cylinders designed for optimum performance with this technology. All sizes in the domestic range are ‘B’ rated, WRAS listed and guaranteed for 25 years. A range of buffer stores is also available to compliment this technology, from a wall hung 20 litre buffer upwards. The 100 litre buffer offers maximum ﬂexibility as it is possible to sit up to a 300 litre cylinder on top, giving a small convenient footprint. For more details on any of the options mentioned please www.rdr.link/px041

WATER HEATING & PUMPS MORE INFO

To discover more of the latest product launches and hands-on tests from installers GO TO

www.rdr.link/py042

ELCO Commercial water heater range Now comprising over 60 direct, indirect and storage models, ELCO has expanded its range of hot water products. Within the range is the TRIGON XL WH direct gas water heater. There are three different versions to choose from including: Standard, Industrial and Swimming Pool, each with seven different models from 142kW to 540kW. The Standard (WRAS approved) and Industrial versions can satisfy a continuous DHW delivery of up to 10,563 litres/hour, while the Swimming Pool derivative offers up to 27,354 litres/hour. Alongside the launch, the company has also released a Commercial Hot Water Range brochure. www.rdr.link/py043 To discover more

SALAMANDER PUMPS CombiBoost The new CombiBoost inline pump by Salamander Pumps boosts mains water flow to up to 10 litres per minute (l/min). The pump sits directly on the incoming mains supply and boosts water flow, helping to improve shower performance and ensure a quicker bath-fill. www.rdr.link/py044 To discover more

PROFESSIONAL HEATING & PLUMBING INSTALLER APRIL 2021 47

Web Ad_Layout 1 07/01/2020 10:41 Page 33

phpionline.co.uk features the latest industry news, video reviews, technical updates and exclusive competitions, giving you instant access to all things heating and plumbing on your desktop, laptop, tablet or phone.

w ww.phpionline.co.uk Professionalplumber

@PHPI

049_PHPI_APR21_Layout 1 04/03/2021 11:27 Page 49

Welcome to the

The Gas App UK Horror Show showcases some of the ‘finest’ work spotted by installers across the country. If you spot any masterpieces to rival these, please submit them to the good people at Gas App UK or email us: phpi@hamerville.co.uk

is now

The app is freely available for both iOS and Android. Simply visit the stores and search for Gas App UK.

FREE!

050_PHPI_APR21_Layout 1 08/03/2021 10:50 Page 50

NEOPERL Flow regulators

PRODUCT ROUND UP MORE INFO

To discover more of the latest product launches and hands-on tests from installers GO TO

www.rdr.link/py045

GASTITE Sizing app Available for free download from the App Store and Google Play, Gastite has launched a revamped sizing app. Key features of the free app include the option to choose between natural gas or LPG, depending on the installation, searchable FAQs, and a Design & Installation guide. www.rdr.link/py046 To discover more

Manufactured in the UK by Neoperl, Flow Regulators are made in several of sizes that can now be retro fitted to taps and showers throughout the home. A typical flow regulator consists of a housing, a seating area and a precision-ring. The flow is determined by the interaction between the seating area and the o-ring. As water flows through the device at a higher or lower pressure, the shape of the o-ring changes to restrict or release the flow of water. To discover more www.rdr.link/py049

ESI 6 Series Heating Controls The 6 Series WiFi Programmable Room Thermostat is the newest launch from ESi Controls. Fully OpenTherm compatible, the range of controls allows full control via the room thermostat or via a mobile phone or tablet. It includes Optimum Start/Stop, Domestic Hot Water (DHW) setpoint, Hot Water time and temperature control when working in conjunction with a wireless cylinder thermostat, and full 7 day, 5/2 day or 24 hour programming options. The controls are available in white or grey. www.rdr.link/py047 To discover more

GROHE Rainshower SmartActive Claimed to be the ‘most innovative hand shower to date in the GROHE product range’ the Rainshower SmartActive features SmartTip control allowing a ﬁngertip on the rear of the hand shower to switch between three spray modes. In the centre of the shower head, round and star-shaped jets provide an ActiveMassage spray. www.rdr.link/py048 To discover more

ALTECNIC 2021 Brochure Altecnic has unveiled its latest product brochure for the coming year showcasing 136 new product lines. The company offers more than 5,000 domestic and commercial products and 136 of these are featured for the ﬁrst time in the 173-page 2021 brochure which is available to download from its website. New products in the brochure include Mixcal Careﬂo Plus, a new Thermostatic Mixing Valve (TMV) with thermostatic override function, smart heating controls and Silfra Infrared Taps. To discover more www.rdr.link/py050

ADVERTISEMENT INDEX ESI Controls ............................................................................. (page 8)

Robert Bosch Ltd ............................................................. (page 2/IFC)

Grohe Ltd ....................................................................... (pages 26,27)

RWC Ltd ........................................................................ (page 52/OBC)

Hultafors Group .................................................................... (page 45)

Stuart Turner Ltd ................................................................... (page 37)

Keston Boilers ....................................................................... (page 35)

Tesco .......................................................................................... (page 4)

LG ............................................................................................. (page 35)

Triﬂow ....................................................................................... (page 19)

Navien UK .............................................................................. (page 23)

Ubbink Ltd ............................................................................. (page 25)

Navien UK ............................................................................... (page 31)

Viessmann ................................................................................ (page 9)

Pump Technology ................................................................ (page 39)

VW ...................................................................................... (pages 11-14)

IBC_PHPI_APR21_Layout 1 04/03/2021 11:24 Page 51

PLAYTIME PHPI takes you straight to the heart of the action, as we round up the latest industry videos to keep your eyes busy. Just type in the rdr.link codes listed to watch… & don’t forget the popcorn!

WAVIN Handy Hacks Wavin has launched a series of new videos giving insightful tips on how its products can be used to help plumbers tackle tricky jobs. The collection of nine short videos is presented by Steve Harris, technical support engineer at Wavin, who has worked on the tools for more than 20 years. Topics covered include the HepKey Plus and HepTool, plus Steve also shares his useful tips on using Blanking Pegs to identify different pipes while on the job.

PB PLUMBER The life of a jobbing plumber #37

To watch the video…

www.rdr.link/py052

Catch up with PB Plumber in this 30 minute video as he embarks upon a boiler installation, plus there is also a bit of handy fault finding advice and a quick overview of the pipe bending tool he is now using. At the end of the episode there is a new feature on some of the mistakes that plumbers have made while working on the job.

NGCFE New Training Centre

FERNOX

The National Gas Centre for Excellence (NGCFE) has opened its doors in Featherstone, West Yorkshire and in this video Managing Director Michael Hunt introduces us to the 6,000 sq. ft facility. Michael notes: “I’m determined to set new standards of excellence when it comes to training and customer service to encourage more people into what is a rewarding career.”

Express Inhibitor Test demo

To watch the video…

To watch the video… www.rdr.link/py051

A brief video from Fernox outlining the company’s new inhibitor test which promises evaluation of the water in a heating system in under 10 seconds. The Express Inhibitor Test will check for the presence of any molybdate based inhibitor within the system water – including the company’s Protector F1. Each small, portable kit contains enough test strips to test 50 systems. The company has also designed an app to help installers log and manage results – even across multiple jobs. To watch the video…

www.rdr.link/py054

www.rdr.link/py053

PROFESSIONAL HEATING & PLUMBING INSTALLER APRIL 2021 51

phpi grid_Layout 1 01/03/2021 10:03 Page 1