HVAC for schools


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www.heatingandventilating.net


Winter boost for A


Poole-based boiler manufacturer Hamworthy Heating, in conjunction with local contractor Giles Heating, has helped Allenbourn Middle School in Wimborne keep its students warm and happy over the winter with a refurbished heating system


safety and contract admin Coomber Associates was a g


The project was comple heat in the school during th


wanted to make the most said: “Whenwebuilt our te at the company and direct hung boilers was provided Company with two ofHam


llenbourn Middle School’s old heating plant – three con from ca. 1994 – were getting old and unreliable. Having worked on several other capital projects with t appointed to undertake the design, tend istration of the replacement boiler plan eted over the winter months. To mainta his period, a temporary mobile boiler


pp j plant was required. A trailer from the Temporary Boiler


d. Stuart Giles, engineering technician mworthy’s Strattonmk2S2-150 wall


reliable, efficient and versatile system emporary boiler plant on behalfwe or at The Temporary Boiler Company,


TheBMS0-10V interface b damage the equipment. In necessary when they are u plate heat exchanger for h installing the boilers on an spark ignition and C13 flue choice due to their high tur possible. Choosing two Str


built into theLMSboiler controls platfor stead, the old circuit stays separate fro used on older systems, as sludge from hydraulic separation to protect the boile ninternalframegaveusspacetofitpum esystems.Beingalightweightwallmo rndown ratio, stainless steel heat exch ratton 150kW boilers was an obvious


ers. This is particularly mpequipment and a unted boiler meant angers,


rmmade easy work omthe new circuit. old pipework can


pos


he Academy Trust, ndensing boilers


ain nt.


for the Build


dering, health and y,


ding Management System (BMS) of the school, soweknow via remote


monitoring that the temporary boiler is working perfectly.” The mobi ile plant room provided heat for three


replacemen


nt took place. Other than the tempora pp


project was to find boilers that would


eweeksduringwhichthe ry plant, the difficulty of the dsuitanoldsystemandbe


g


compatible with the existing pipework. The Hamworthy Purewell Variheat mk2 cast iron conde


similar footprint as the old boilers to sit on the same plinths. The cast iron heat exchanger with 10-year warranty and large waterways deals well with existing debris in older heating systems. The three


eboilersdeliveranoutputofup


to 285kW (50°/30°C) and can match the heat demand with a turndown ratio of 9:1.


Mr Giles added: “We use the Purewell Variheat boilers wherever ssible due to their cast iron reliability


boilers due to unreliability in case of bad system maintenanc the upgrade


ce involved. Since changing over to th ed LMS controls platform and spark i


to be using these for the foreseeable future. We technical ad


firm, we like to use a local manufacturer.” INSTALLING FLUE & CHIMNEY SYSTEMS IN SCHOOLS A 1FlueSystem refits and maintenan


1 Flue Systems is already gearing up for this year’s sc


the busiest time of year for installations,


this year’s school summer holidays as it’s the busiest tim


refits and maintenance projects. Last summer, the company completed projects totalling £850,000 in e


nce projects. Last summer, the me of year for installations, hool summer holidays as it’s ms is already gearing up for


that the team at the North Nottinghamshire-based company has to deal with to deliver such a large number of projects in such a short space of time. As a specialist in the design, manufacture,


company completed projects totalling £850,000 in afranticsix-weekp eriod. Here managing director John Hamnett looks at some of the key factors N


a frantic six-week period. Here managing director John Hamnett looks at some of the key factors that the team at the North Nottinghamshire-based company has to deal with to deliver such a large


As a specialist in the design, manufacture, installation and maintenance of commercial and industrial chimney, flue and exhaust systems – it’s often the big, high-profile projects, such as the one we’re working on at Battersea Power Station, that tend to grab the headlines.


industrial chimney, flue and exhaust systems – it’s often the big, high-pr


fl rofile projects, such as the one


But, in actual fact, it’s all the bread-and-butter projects for hotels, o pg


public buildings and schools that make up the bulk of whatwedo. Becaus


projects for hotels, o ffice and apartment blocks, public buildings and schools that make up the bulk seweknow there are set


ce and apartment blocks, p


windows for working at schools and other educational establishments, we plan well in advance as we know that summer, Easter a


of what we do. Because we know there are set windows for working at schools and other educational


that summer, Easter and Christmas breaks plus the and Christmas breaks plus the


th h


w a


he timewehave to fulfil these contract half-term weeks get blocked out, sowe


th


that can be started and finished over asingleweekend–suchastheone we recently completed to remove an external chimney and install a new o


external chimney and install a new one at a primary school that is local


Specific requirements for schools In many ways the projects we


In many ways the projects we


carry out for schools are no different to any other work we undertake and fo


te w


a a


follow that same process of tendering, surveying th


the site, engineering the project and installing the system. However, there are some instances where work is carried out during term time – py


ollow that same process of tendering he site, engineering the project and in


g, surveying nstalling the


temporary CHPs are used to ensure heating and a supply of hot water. In these cases,w


work is carried out during term time – for which emporary CHPs are used to ensure h


th s


attention to site safety, sca olding and general access so that children can’t get into a


heating and a –forwhich


the main contractors to pay even more stringent attention to site safety, scaffolding an


supply of hot water. In these cases, we work with he main contractors to pay even mor


access so that children can’t get into an area where


an area where dgeneral estringent eworkwith g


one at a primary school that is local to us in Ollerton.


half-term weeks get blocked out, so we can maximise tors.


can maximise the time we have to fulfil these contractors.


That said, we also undertake plenty of projects hat can be started and finished over a single weekend – such as the one we recently completed to remove an e


work is being carried out.


importance of con As part of our to


big


importance of conduct on site – in particular the lan


As part of our toolbox talks, we stress the nduct on site – in particular the nguage that the installers use.


oolbox talks, we stress the


biggest challenges we face is the need to be


given that the timescales are often very tight on school projects.


pos an


all the competent p


We work closely with contractors and in the majority of cases the


Wework closely with contractors dinthemajorityofcasesthe


sition of boilers is agreed in advance so thatwecan measure up, engineer the required system and manufacture


all the competent parts.


one Friday afternoo wehad a phone ca school in Castlefor But it’s not alwa


y


But it’s not always the case – as work on a high school in Castleford proved. Because of an oversight, we had a phone call out of the blue from a contractor one Friday afternoon in the middle of August last year to say they needed boilers flued and commissioned by the following Friday. We were able to get to site on ning to measure the plant room, and


on in the middle of August last year ll out of the blue from a contractor dproved.Becauseofanoversight, ys the case – as work on a high parts.


gy


to say they needed boilers flued and commissioned by the following Fr iday.Wewere able to get to site on the Saturday morn


the Saturday morning to measure the plant room, and then at the start of the following week we were able


position of boilers is agreed in advance so that we can measure up, engineer


to be responsive to changes, especially giv


language that the installers use. Don’t forget the flues: One of the ggest challengesweface is the need b responsive to changes, especially ven that the timescales are often


One of the dvice is always at the end of the phon


he Purewell Variheat mk2s with mwaterqualityandextra .Weavoidusingaluminium


ne and being a local family run like using Hamworthy because gnition system, we will continue


ensing boilers fitted the bill with a b


!!


April 2020


www.heatingandventilating.net


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