Viessmann Boiler

A Day in the Life of Our Engineer

MY DAY BEGINS . . . 

It started earlier than usual, meeting our service engineer at the unit in Old Sarum at 7:30am to ensure we arrived at our first job on time at 8:00am.

Ready to start our day. . . .

AHS Ltd Van

JOB 1:

Our first port of call was a gas boiler service in Redlynch.  After informing the customer of our arrival, we accessed the boiler in the garage.  The engineer showed me how to safely remove the case of the Viessmann boiler to expose the inside.  He talked me through each of the components that make the boiler work and then using the Viessmann toolkit (pictured below):

Viessmann Toolkit

I was shown which parts needed to be removed in order to carry out the service.  This is a careful process which begins with, most importantly, switching off the gas supply to the boiler.  Once this is done, the burner needs to be removed in order to check the burner seal, electrodes and clean the heat exchanger as necessary.  There is certainly a knack to the removal of the burner, undoing clips in the right order, followed by the screws and then removing the unit safely ensuring not to burn yourself or damage the part itself.  Once this has been done, any wearing parts are then checked and changed if needed.  On this occasion, we replaced the burner seal, which is a rubber ring that the burner leans on when placed back into the heat exchanger that houses it.  Whilst the engineer did this, I used our dry vacuum followed by cleaning wipes to ensure there was no loose debris or dust inside the boiler.  Once the boiler was put back together, we fired it up and put it into service mode.  This allows the boiler to produce emissions as it would when in full demand and whilst it did this, we used the flue gas analyser to check the boiler was producing a safe gas reading.  Once the gas readings were taken, they were printed on site and attached to the CP12 certificate that the engineer had already began writing out.  This left me just enough time to finish my coffee and biscuits, before asking the customer to sign the CP12 and setting off to our next job.

JOB 2:

Our second job took us to an industrial warehouse building, much like our own for another gas boiler service on a Viessmann boiler.  This time our engineer carefully watched as I carried out the initial checks, such as turning off the gas supply and unplugging the burner controls, unscrewing and removing the burner.  I replaced the burner seal under the careful watch of our engineer.  After giving the boiler a good clean inside and out, and completing the CP12 we were ready to leave another happy customer with a newly serviced boiler and move on to our 3rd job of the day.

JOB 3:

Our next job took us out to one of the first Viessmann oil boilers installed by AHS Ltd.  On arrival, our customer wanted to tell us just how much of a difference he had noticed in the first year, by changing from his previous boiler to the energy saving Viessmann – always great to hear.  Once again, our engineer talked me through the components that make up a Viessmann oil boiler and what parts needed to be checked during an oil service.  I was impressed by the kit that accompanies these boilers that allows for an engineer to remove the main heat exchange, while being supported by a clip-in mechanism on the casing of the boiler.  This is helpful due to the size and weight of the heat exchange and means less wires need to be unplugged and put back in.  After checking all wearing parts, this time with no replacements needed and cleaning out the boiler, we completed the CD11 and had it signed off by the customer before leaving.

JOB 4:

Our final job of the day took us to Owslebury to look at a broken flush mechanism and leaking WC. Having read our jobsheet in advance, our engineer had an idea of what the issue might be and therefore how to resolve it. We therefore stopped off at our suppliers to pick up the materials and then headed on to the job.  Arriving to a houseful of wedding guests, meant we had limited time to cut off the water supply and rectify the leak.  Whilst our engineer dealt with this, I used our wet/dry vacuum to remove any water left in the cistern – ensuring to put down sheets to protect the customers floor from any water damage in the process. Once the water had been isolated and drained from the cistern, it was removed. We found the existing flush mechanism to be damaged and the doughnut washer was allowing water through. Whilst I constructed the new flush mechanism ready to be installed, our engineer replaced the doughnut. The replacement flush was then fitted, water switched back on and the WC tested 2 – 3 times checking it was in good working order and no leaks were apparent.  Another happy customer!

MY EXPERIENCE:

The drive back to Salisbury bought us to 5pm and the end of our shift. I thoroughly enjoyed my day out in the field and not just for all the biscuits!

Perks of being an engineer for the day

It was great to see a different aspect of my job and meet some of our customers. It was very nice to hear them praise the company’s previous work as well as their appreciation for the benefits of our installations.  From an office workers point of view, it was rewarding to know that our well planned routes are worthwhile and save travel time in the day for our engineers. Overall, spending the day working with an engineer was a fun and interesting experience.

Written by ‘The Girl in the Office’

Boiler servicing

Boiler Servicing – An Essential Investiment

A study has found that watching spending has become an ingrained way of life that consumers will continue with, even when their finances improve.  It seems the recession has left behind a legacy of cautious consumers, with people needing a strong reason to part with their money.

VITAL BENEFITS

An annual boiler service, however, needs to be seen as essential spending.  In much the same way as a homeowner would regards a service and MOT for their car.  Most people anticipate there will be ongoing costs associated with their vehicles and budget for them accordingly.

An annual boiler service provides some important benefits; it will ensure the boiler is safe, is performing efficiently and reliably, and maintains the manufacturer’s warranty.

SAFETY

The number one reason for a homeowner to have their gas boiler serviced regularly is safety.

Unfortunately, consumer awareness of carbon monoxide (CO) poisoning is thought to be generally low across the UK.  It is important for heating engineers to explain to their customers that unsafe gas appliances – those that have been incorrectly fitted, badly repaired or poorly maintained – can produce this highly poisonous gas.

According to the Department of Health, 50 people die each year from CO poisoning and another 4,000 are treated in hospital.  It is thought the true number is likely to be much higher, as the early symptoms can easily be mistaken for flu or tiredness.

LONGEVITY

Another benefit of regular servicing extends the service life of your heating system and ensures reliable, trouble-free operation.  This is the only way to make sure that the energy from the fuel is used efficiently and cleanly, thus protecting the environment and saving on heating bills and the likelihood of breakdown, saving the homeowner money and minimising disruption without compromising high heating and hot water convenience.

Again, it is useful to draw on a car analogy.  A homeowner will understand that things like replacing filters and spark plugs are essential to keep their vehicle in top condition, and that avoiding a scheduled service may have a detrimental effect on the way the car works, leaving them out of pocket in the long run.  The same rules apply here, the boiler, burner and control unit form a system like that of a car engine which is essentially runs for many more hours than a car.  If your car was in operation for the same amount of time as your boiler, it would cover more than 60,000 miles in a year.  All car owners know that they need to have a service carried out at regular intervals.  Therefore your heating system should be serviced at least once a year, much like your car.

WARRANTIES

An annual service is usually a condition of a boiler warranty – which is another important reason why you as the homeowner should invest.  Today, boilers come with lengthy warranties, which should be seen as a sign of reliability, but the working parts still need to be checked annually.

Call us today to book your service on 01722 417873.

Sited: McCallum Layton study.  HVP Magazine May 2016.

Written by ‘The Girl in the Office’.

Case Study - Viessmann Vitorondens 200-T Oil Boiler

All in a Day’s Work- Viessmann Installation at a Grade II Listed Home

When the owner of a former listed rectory dating back to around 1600 in a small village outside Salisbury, Wiltshire, came to replace the property’s fifty year old boiler and gravity fed heating system, he naturally had high expectations.

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The project needed to significantly reduced running costs (the old system consumed 2,000 litres of oil per month), provide a constant space heat temperature and enable the heating, hot water and secondary hot water circuits to be controlled independently and remotely. Salisbury-based Viessmann partner, AHS Ltd., specified a Viessmann Vitorondens oil-fired boiler, with weather compensation and Vitotrol 300A remote controls. The result is a modern, fuel efficient heating system which is saving £8,000 per year, or around 70 per cent of his previous expenditure on oil.

The Technical Side:
  • 60kW Vitorondens 200.
  • Vitocell 300-B 500L.
  • 3 x Header Divcon Units with mixers.
  • Vitocom 100 with Virotrol App.
  • Vitotrol 300A remote control (3 heating circuits).
  • Wilo Comfort COR-2 pressure booster set.
  • Break tank.
  • 2 x large expansion vessels.

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Viessmann Vitorondens oil-fired boiler, with weather compensation and Vitotrol 300A remote controls.

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The new heating system comprises three fully weather compensated heating circuits and one constant temperature circuit for under-floor heating.

Which means:

Saving space, saving oil.

With oil bills of almost £13,000 per year at the 6,660 sq. ft., six bedroom, four bathroom home, fuel efficiency was a major priority. The Viessmann system – attractive because of its product build quality, system performance and user- friendly controls – was also the only one to come with weather compensation controls. These would fully optimise the Vitorondens 200’s efficiency and improve internal comfort, regardless of external temperature.

The installed system provides three fully weather compensated heating circuits and one constant temperature circuit for under-floor heating. One cylinder loading circuit with controls operates the heating and hot water and also the secondary hot water circuits. A welcome benefit of the advanced Vitotrol 300A controls is that AHS can monitor the system remotely on behalf of its client.

Noise was also a key consideration as the boiler’s flue would terminate above an outside seating area. The Vitorondens outperformed its competitors on noise levels.

AHS was called in as one of the few companies who could take on the complexities of the equipment and the task of designing, specifying and constructing a new, 9 ft by 6 ft plant room, in an outbuilding next to the main house. Tight for space and access, there was a lot of kit to install and most of it had to be dismantled and built inside the room. Thanks to the swift work of AHS, the crossover to the new plant room was achieved in just two days.

Overall the installation has resulted in a huge reduction in heating costs and oil consumption of around 70 per cent. Says a satisfied AHS Customer:-

In a property with no particular thermal efficiency, the installation of a highly efficient oil boiler and the very latest in temperature curve control programming has achieved a massive shift in performance.

Written by ‘The Girl in the Office’.

Inox-Radial Stainless Steel Heat Exchanger

Heat Exchangers: Stainless Steel v’s Aluminium

Stainless steel is the key and here is why. . .

Heating technology should work together to ensure the smooth operation of the entire system – from boiler via burner, control unit and heat exchanger, to deliver the highest possible operational reliability.  Today, domestic and commercial boiler technology demands the most reliable, energy efficient components.

A key component in choosing the right system, is the heat exchanger within the boiler, as maintenance costs, durability and product lifetime should all be considered when buying a boiler. As the two most common types of heat exchanger in the UK condensing boiler market, we have examined the differences between stainless steel and aluminium to offer a comparison of quality and longevity.

Heat Exchanger (half)

Stainless Steel Heat Exchangers:

Used by Viessmann throughout its entire condensing boiler range, stainless steel heat exchangers provide a high resistance to corrosion in a wide variety of pH levels, therefore increasing the useful life of your boiler. This provides long term value for money and requires less system downtime due to maintenance.

Important points to consider:

  • Increases useful life of your boiler.
  • Less downtime due to maintenance.
  • Does not require use of system inhibitors.
  • Recommended for filling with potable water (drinking water) no inhibitors required.
  • Self-cleaning.
  • Higher grade corrosion resistant material.

Heat Exchanger (close up)

Aluminium Heat Exchangers:

A lightweight and alternative option, Aluminium heat exchangers also provide high heat transfer but require special inhibitors when maintaining the system, which if not used can result in a high risk of damage to the boiler. Annual maintenance is also vital to remove aluminium oxides, which can build up and clog the condensate line.

Important points to consider:

  • pH treatment critical to longevity of the heat exchanger.
  • Artificially softened water not permitted.
  • Aluminium material corrodes through aluminium oxide build up and erodes further at high flow rates.
  • Reduced lifetime of the heat exchanger.
  • Cheaper to manufacture than stainless steel.

Heat Exchanger Steel v's Aluminium

All Viessmann gas condensing boilers are equipped with stainless steel Inox-Radial heat exchangers. This technology brings with it an extremely high efficiency rate of 98 percent and exceptionally reliable and efficient operation during its long service life.

Viessmann guarantees the Inox-Radial heat exchanger for ten years against leaks resulting from corrosion.

Gas Safety Week

About Gas Safety Week

Gas Safety Week is an annual safety week to raise awareness of gas safety and the importance of taking care of your gas appliances. It is co-ordinated by Gas Safe Register, the official list of gas engineers who are legally allowed to work on gas.

Badly fitted and poorly serviced gas appliances can cause gas leaks, fires, explosions and carbon monoxide poisoning. Every year thousands of people across the UK are diagnosed with carbon monoxide poisoning. It is a highly poisonous gas. You can’t see it, taste it or smell it, but it can kill quickly with no warning.

By taking care of your gas appliances properly you are taking care of your home and your loved ones.

Follow these few simple checks to keep you and your family safe.

• Check your gas appliances every year. Gas appliances should be safety checked once a year and serviced regularly by a Gas Safe registered engineer. Tenants – make sure your landlord arranges this. Set a reminder so you don’t forget at www.staygassafe.co.uk.

• Check your engineer is Gas Safe registered. You can find and check an engineer at www.GasSafeRegister.co.uk or call 0800 408 5500.

• Check your engineer’s Gas Safe Register ID card. Make sure they are qualified for the work you need doing. You can find this information on the back of the card.

• Check for warning signs your appliances aren’t working correctly e.g. lazy yellow or orange flames instead of crisp blue ones, black marks on or around the appliance and too much condensation in the room.

• Know the six signs of carbon monoxide poisoning – headaches, dizziness, breathlessness, nausea, collapse and loss of consciousness.

• Have an audible carbon monoxide alarm. This will alert you if there is carbon monoxide in your home.

For gas safety advice or to find and check an engineer visit the Gas Safe Register website at www.GasSafeRegister.co.uk. Alternatively call the free helpline on 0800 408 5500.

Carbon Monoxide Poisoning

Carbon Monoxide Poisoning

Carbon monoxide is a poisonous gas that kills hundreds of people each year and injures many more. It is often referred to as the silent killer; it has no odour or taste and cannot be seen. Like oxygen, CO enters the body through the lungs during the normal breathing process. It competes with oxygen by replacing it in the red blood cells, thereby reducing the flow of oxygen to the heart, brain and other vital organs. In high concentrations, CO can kill in minutes. Many cases of reported carbon monoxide poisoning indicate that while victims are aware they are not feeling well, they become disorientated and unable to save themselves by either exiting the building or calling for assistance. Exposure during sleep is particularly dangerous because the victim usually does not wake up.

Symptoms of CO poisoning

The following symptoms may be related to CO poisoning which all household members should be made aware of:

  • Mild Exposure: Slight headache, nausea, vomiting, fatigue (often described as ‘flulike’ symptoms)
  • Medium Exposure: Severe throbbing headache, drowsiness, confusion, fast heart rate
  • Extreme Exposure: Unconsciousness, convulsions, cardiorespiratory failure, death

A CO detector monitors the level of CO as parts per million (ppm) in the atmosphere surrounding the detector.

35ppm The maximum allowable concentration for continuous exposure for healthy adults in any 8 hour period, as recommended by the Occupational Safety and Health Administration (OSHA).

200ppm Slight headache, fatigue, dizziness, nausea after 2 – 3 hours.

400ppm Frontal headaches within 1 – 2 hours, life threatening after 3 hours.

800ppm Dizziness, nausea and convulsions within 45 minutes. Unconsciousness within 2 hours. Death within 2 – 3 hours.

Should you suspect CO may be affecting you or your family, open the doors and windows of your property to ventilate, turn off your appliances and evacuate the premises. At this time the authorities should be contacted to locate the source of the carbon monoxide before re-entering the building. Medical attention should be sought for anyone suffering the effects of CO poisoning.

Common sources of CO:
  • Oil and gas boilers
  • Portable generators
  • Oil or solid fuel cookers
  • Gas or paraffin heaters
  • Barbecues
  • Clogged chimneys
  • Gas, wood, coal or coke fireplaces
  • Cigarette smoke
  • Gas appliances
  • Any fossil fuel burning appliance

It is relatively inexpensive to have a CO alarm fitted in your home, so don’t hesitate to call us today to arrange for one of our engineers to visit your home.

Keep your family safe!

Written by ‘The Girl in the Office’

New Boiler Installation

Proud of our Engineers – Viessmann Installation at a New Forest Hotel

It’s hard not to be impressed at the work our engineers undertake especially when it comes to an installation such as this.

What a beautiful building for the installation to take place at.

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Now down to the main plant room. . .

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Two Viessmann gas boilers installed and awaiting to be fully connected and turned on.

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To an untrained eye, such as mine, even I can see the work that has gone into this Plant Room by the sheer size of the new cylinders and pipework.  All the old dropping pipework is coming out to be replaced by new straight and completely secured 2 ½” iron pipework and fittings.

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This not only shows the magnitude of the work involved, but that careful thought and design consideration has been made, to fit into the space available and to make all the equipment accessible and serviceable in the future.  Not forgetting that until it is time to switch over to our new system the old system has to be running as the hotel is fully booked as the work continues.

The Technical Side:

I would like to give you a rundown of the equipment used in this installation:

– 2 x Viessmann-W 200 Vitodens 60kW boilers
– 2 x Viessmann Vitocell 300-B 500L Cylinder
– Viessmann Low Loss Header and insulation
– Spirotrap MBL 2 ½ “
– Spirovent Dearerator 2 ½ ”
– Pumps
– 2 ½” Pipework
– Controls – Weather Compensated

Which means:

Our customer will have complete control of the heating and hot water system within the hotel.

The main plant room has 1 underfloor heating circuit for the conservatory, used as the dining room.  Then 3 individual fully weather compensated heating circuits for the main house ground floor, 1st floor bedrooms and 2nd floor bedrooms.  Meaning different temperatures and timings can be set for the different sections of the hotel.

So from an atmospheric conventionally flued system to include boilers and water heaters, they now have a balanced system with Viessmann high efficiency condensing technology with full weather compensation.

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What a difference we can make!

Written by ‘The Girl in the Office’.