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Case Study ‘A’ rated building with natural gas A low cost, Part L compliant solution.
Glendale, The Old Nurseries, Delgany, Co. Wicklow
The Gas Boiler / NuTech SEH system:
Improved technologies and improved solutions
• is lower cost to install than other systems;
When specifying a new development’s energy solutions, the improved number and variety of systems creates a dilemma for any developer. Ensuring that you “future proof” the development while keeping pace with ever changing customer preferences can be a challenge. By constantly researching industry developments and choosing award winning technologies to complement the benefits of natural gas, we offer energy efficient, environmentally friendly, ‘A’ rated, Part L compliant solutions that will keep your customers happy for years to come.
• is easier to maintain; • has lower CO2 emissions than other heating systems. • has lower running costs for the home owner; and • is easier to operate;
Part L compliant – only one of the boxes we tick for the builder A cosy living room glowing from a lit fire and being able to prepare meals using a gas flame make the difference between a house and a home for most families. That, coupled with the expectations of having instant hot
water on tap and hot radiators at the flick of a switch, is traditionally what we have offered to households and developments. It’s obvious that bespoke, integrated energy systems are becoming the norm. By integrating solar enhanced water and heating solutions with natural gas products, a system is introduced that satisfies the stringent Part L BER requirements and, while ticking so many boxes for builders and home owners alike, offers an ‘A’ rated solution.
‘A’ rated building with natural gas
‘A’ rated building with natural gas
Benefits of using the solar enhanced heating and hot water system Energy demand is reduced to a minimum level Fully integrates with a natural gas boiler that heats on demand
“Best Renewable Energy Product” at the SEAI 2014 Energy Show A system developed with NuTech, Ireland’s leading supplier of integrated renewable energy systems. The NuTech system (“Best Renewable Energy Product” – SEAI 2014 Energy Show) when integrated with natural gas, further increases the energy efficiency of your development by delivering solar energy into the house that is used for both space heating and domestic hot water heating. Combining a natural gas boiler with this system completes the picture making this instant, efficient, cost-effective ‘A’ rated solution a reality.
An award winning solar enhanced system that delivers up to 70% of hot water.
Solar hot water is delivered to the hot water cylinder and also to a single fan coil assisted radiator located in the hallway or landing. This provides “free energy”; unlike the average solar energy system, this system delivers solar heat to the house during autumn winter and spring. During summer the built in electronic control system ensures solar heat is only delivered to heat the hot water cylinder and no heat is delivered to the house itself as ‘Summer Mode’ will have been selected by the home owner Complements the portfolio of natural gas products including gas fire and gas cooking and hot water on tap The system surpasses all of the Part L requirements of the building regulations, including the renewable energy requirement
How it works: The ideal solution for the builder who wants to meet the part L requirements in a single, simple package using standard construction methods. The system:
The solution we offer is simplicity itself. The system delivers a straightforward, maintenance free solution that can be installed by the builders’ own plumbing team. This, combined with natural gas, makes the house a very attractive option for any prospective homebuyer. Homeowners enjoy instant and controllable heat and hot water. They can now have gas fires and gas hobs in their high spec, beautifully designed kitchens and living rooms. Energy that is cost-effective, clean, efficient and instant… exactly what homebuyers want. The winning formula that meets the building regulatory requirements of Part L:
A3 rated build Insulation:
A3
A2 rated build Insulation:
A2
• Maximum allowable U-Values in all elements.
• Lower U-Values (higher levers of insulation)
Glazing:
Glazing:
• Good quality double glazing
• High quality triple glazing
Ventilation:
Ventilation:
•
•
Good level of air-tightness with natural ventilation throughout with extract fans in all wet rooms and window vents in all windows.
Proven Technologies
A simple Positive Input Ventilation system provides the house with fresh warm air in the autumn, winter and spring.
• Mechanical Heat Recovery Ventilation system may also be used as an alternative
Gas boilers delivering instantaneous heat to standard radiators running at standard intermittent
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The solar array is installed on the roof
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The pump station delivers solar heat to the hot water cylinder and house
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An electronic controller automates the entire system
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Solar energy is delivered to the solar hot water cylinder and can be used in the evening. Furthermore, additional solar energy is delivered to a single fan coil radiator giving low grade “free energy” to heat the house.
•
Standard radiators are used throughout the house as the main space heating system.
Water Storage:
Water Storage:
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A simple, user friendly homeowner’s display unit shows the operating mode
• 300 litre solar cylinder located in the hot-press
• 300 or 400 litre solar cylinder located in hot-press
no cut outs, no oversized radiators, no second guessing cost trade-off between peak and off peak
•
There are no confusing or complicated control panels, the homeowner simply selects whether to use the summer or winter mode on the display unit.
Appliances:
Appliances:
usage
• Condensing gas boiler with standard radiators throughout
• Condensing gas boiler with standard radiators throughout
• Balanced flue gas fire
• Balanced flue gas fire
• Gas cooking
• Gas cooking
• Accessible user friendly time clocks and controls
• Accessible user friendly time clocks and controls
This solution gives homeowners what they want… instant heat and hot water on tap. This system provides green, environmentally friendly solar energy with instant heat and hot water on demand from a natural gas boiler.
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More stringent but achievable air- tightness requirements
Renewables:
Renewables:
•
•
SEAI award winning NuTech solar enhanced space heating and hot water system via three/four flat plate solar collectors on the roof and featuring a fan coil radiator delivering solar heat.
SEAI award winning NuTech solar enhanced space heating and hot water system via three/four flat plate solar collectors on the roof and featuring either a fan coil radiator delivering solar heat or a NuTech Solar Enhanced Positive Input Ventilation system
Using these techniques, the development becomes houses that have a BER ‘A2’ or ‘A3’ rating depending on what the builder wants.
mode
No complex control panels,
‘A’ rated building with natural gas
This system can increase your renewable energy contribution up to four times as much as other systems
Renewable supplier: Bill Quigley, NuTech Renewables Ltd PO Box 8008, Glenageary, Co. Dublin. 01 663 6372 info@nutechrenewables.com Developer: Wood Group Homes Blacklion, Chapel Road, Greystones, Co. Wicklow 01 287 6942 info@woodgroup.ie
The contact details for Gas Networks Ireland are: Networks Services Centre, St. Margaret’s Road, Finglas, Dublin 9. Businesslink:
1850 411 511 Site Drawings:
plans@bge.ie networksinfo@gasnetworks.ie @GasNetIRL gasnetworks.ie
Architect: PD Lane Associates Church Road, Glenageary, Co. Wicklow 01 287 6697 www.pdlane.ie
36813/08/2015
This information is only a guideline to the different products available for use with natural gas in new development construction. Users should ensure that products are suitable for the specific circumstances in which they seek to apply them. Contact the supplier or manufacturer directly for specific information on building requirements and materials needed for installation. Professional advice specific to the project should always be sought. The current Irish Gas Standards and Technical Guidance Documents (Building Regulations) override all contents. Users should ensure they always have the most up to date information.