Gain without pain – Nu-Heat MCS support for installers

Nu-Heat knows that the effort and time involved in becoming MCS registered and then providing the paperwork for every renewables installation can be something that many installers do not enjoy, so we have come up with some support options:

For MCS registered installers

  • MCS compliant quotations
  • Planning permission qualification for ASHP through MCS020 permitted development rights and advice where needed as to what will be required by the local authority for planning permission
  • A comprehensive system Handover Pack containing as much of the relevant paperwork as possible to reduce the amount of time spent in the office. This includes:
    • A full set of installation manuals
    • Bespoke mechanical and electrical drawings
    • Full heat loss calculations
    • Customer energy summary document and star rating
    • Full commissioning documentation
    • Product warranty certificates
    • Health & safety information
    • Customer User Manuals

For installers without MCS registration

All of the above plus…

  • A commissioning support package that allows you to install the equipment to our criteria before a fully qualified and MCS registered Nu-Heat engineer thoroughly checks that the installation meets all of the MCS requirements before signing it off.
  • Production and issue of customer’s MCS certificate
  • System handover to the homeowner (if required)

Nu-Heat firmly supports MCS accreditation, viewing it as a positive direction for the renewables industry, allowing installers to make the most of the increasing opportunities of this growing market and purchasers of renewables systems the peace of mind that it has been installed to a high standard.

For more information contact the Sales Team or your Account Manager on 0800 731 1976 or 01404 549770.

Introducing the Annual Service Scheme for Hitachi ASHPs

Nu-Heat has developed an exclusive new option for owners of an Hitachi heat pump system – an Annual Service Scheme.

Owners of Hitachi heat pumps purchased through Nu-Heat and commissioned more than 12 months ago will now be able to sign up for on-going maintenance and support for their system, with the option to add an annual solar thermal service. Nu-Heat will also conduct a free underfloor heating health check, allowing you, the installer to concentrate on more lucrative, new installation projects.

The Nu-Heat Annual Service Scheme is offered exclusively to Nu-Heat customers and delivered by a team of fully trained engineers approved by our suppliers.

Nu-Heat engineers can modify system settings and show customers how to understand and operate system controls to achieve maximum efficiency and realistic system performance.

Most manufacturer warranties require an annual system service in order for it to remain active – this service contract fulfils that criterion.

Key benefits to installers

  • Reduction in the number of free call-outs you, the installer has to make
  • Reassurance for your customers that they will not incur unexpected charges
  • Reduction in the number of phone queries you will receive as Nu-Heat will provide free telephone support direct to your customers
  • UFH servicing is not available – we leave this to you, the original installer, we just do a free health check

UFH – future-proofing for renewables

Not every homeowner will want to install a complete new heating system and a new heat source at one time; many prefer to install some elements and upgrade the rest at a later date.

This is often the case with underfloor heating (UFH) and heat pumps. Many homeowners would like to have a heat pump and they understand that it will work more efficiently with a low-temperature heat emitter such as UFH, but they are unable to make the entire financial commitment in one go. They would prefer to install the UFH with a boiler in the first instance and change to a heat pump when they can afford it. Previous delays in the launch of government financial incentive schemes have also exacerbated the situation with many households waiting to see whether they will be eligible.

Suitability

Future-proofing the UFH for use with a heat pump presents a challenge. On the one hand a boiler-fed heating system will be capable of providing high water flow temperatures and enough heat to ramp up and down, on the other hand the heat pump will operate most efficiently when supplying lower flow temperatures and running constantly. This can be overcome by an experienced system designer with an understanding of the design parameters for both technologies but it is not a standard design and should always be tackled by a professional.

 

A good supplier will offer advice as to whether the property is suitable for underfloor heating or a heat pump. A new build, anything built within the last 20 years to meet building regulation standards or a property that has been upgraded to include double-glazing, cavity or solid-wall insulation and loft insulation could well be able to benefit from UFH.

However, the criteria for a heat pump are more stringent; a detailed assessment of the building’s heat loss will be needed to determine whether or not a heat pump will provide sufficient energy to heat it successfully. This is why it is sensible to use a design and supply company that offers both products and can undertake all the calculations. For instance, Nu-Heat knows that design is crucial to performance and has developed tools to ensure the correct sizing of a heat pump. These include ‘Predictor’, a software programme that runs a simulation of performance over an average year, based on local monthly weather data and taking account of the changing seasons. The programme uses the daily temperature cycle for the simulations so it includes cold nights and warm days allowing it to produce accurate and realistic forecasts.

 

Underfloor heating

Different UFH floor constructionshave different characteristics; for instance, when first switched on a screed floor can take a while to heat up from cold but it will retain the heat for a long time and conduct heat really well, whereas a floating floor with metal diffuser plates will heat up quickly, conduct heat well and then cool down fairly quickly. In either case thermostats can be set to suit the performance characteristics of the floor construction and deliver heat exactly when it is needed.

 

The choice of floor coveringalso plays a part with tiles conducting heat very well but carpet creating more of a barrier. The system designer will be able to recommend a floor construction based on the exact requirements of the individual project. They will be able to produce heat loss calculations that allow the heat pump to be correctly sized and tailor the UFH system so that there is sufficient pipe in the floor to operate with a heat pump, which will mean that the boiler-fed system is operating with lower flow temperatures than would normally be specified. This, however, could be an advantage if a condensing boiler is used, as it will be able to operate in condensing mode for greater efficiency.

When the heat pump is eventually fitted, the low flow temperatures required by the UFH will allow it to operate at its optimum efficiency, achieve a good Seasonal Performance Factor (SPF) and keep running costs to a minimum.

Integration at a later date

To allow a smooth transition between the boiler and heat pump, the installer should make sure that key components (such as the blending valve) are accessible, as they will have to be changed at a later date. A real understanding of the different setups will allow for this sort of forward planning, so again, the expertise offered by a competent design and supply company can pay dividends.

Integration of the different technologies is not something that is widely available but it is worth seeking out a supplier such as Nu-Heat that offers expertise in this area. Any heat pump design should comply with all MIS MCS standards and be supplied with drawings showing all mechanical pipework and valves as well as electrical connections, along with installation manuals tailored to the individual heat pump. When this design is then linked to a similar set of documents showing how the UFH should be integrated, the installation process is greatly simplified. If the company also offers free, expert technical support the installer can be confident that all bases are covered.