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Energy Services

1.0  Heating Performance - May be determined by achieving maximum energy efficiency and costs in use and having minimum environmental impact:
(a)  Fuel choice – depends on availability, running costs, capital costs and CO2   emissions. Due to the significantly lower carbon impact of gas and natural gas, where available, is the preferred as the fuel for wet-heating systems. Outside the gas licence area all heating installations should be oil-fired systems where this is technically feasible.  Electric storage heating systems are not considered a desirable choice of fuel and should be avoided, unless, it is not technically feasible to use gas or oil.
(b)  Energy Efficiency – the value and rate of energy consumed is influenced by levels of efficiency designed into the system together with the levels of insulation provided within the property.  In determining energy needs and heating performances, subject to scheme type, the guidance indicated in table below para (h) should be followed.
(c )  Heating Standard – full central heating should be provided in all new dwellings.  The type of heating for each type of dwelling should be agreed with the Client and contained within the Design Brief.  Heating Options include:
Houses (any number of persons):
  • Natural Gas;
  • Oil fired heating;
  • Renewable Heating Sources;
Alternatively, small group heating systems may be considered where appropriate.
Note: An additional electrical circuit terminating with a 20-amp double pole switch should be installed on all heating installations excluding solid fuel.
(d)  Natural Gas Supply – installations should be in accordance with BS 6891 and installed all as per Manufacturers Instructions.  A Gas Safe registered installer should carry out the installation in accordance with the relevant requirements of:
  • Gas Safety (Installation & Use) Regulations;
  • Building Regulations (NI);
  • IEE Wiring Regulations – current edition;
  • Water Regulations for NI.
More information is available at Gas Safe external link
2.  Calculation of room heating requirements
Download:
2.0  Hot water supply - should be by an indirect water heating system with a coil type immersion heat exchanger located within the cylinder.  A single element electric immersion water heater should be provided for standby/emergency use.  This heater should be capable of heating the entire hot water cylinder when the central heating system is switched off.  (Obviously this would not apply where ‘combi type’ heating is installed).  
2.1  Controls:
  • The immersion heater should be switched two-way between the airing cupboard and the kitchen.
  • Consideration should be given to the installation of a time switch.
  • The control switches should be permanently marked.
  • A remote valve opening cylinder thermostat should be provided for the hot water cylinder, operating the primary circuit pump.

    Note: This is required to ensure boiler interlock.
3.0  Electrical Lights/Sockets – lighting and power supply should be adequate for their purposes using minimum energy in the process.  All specification options should be considered to allow for:
  • Current need;
  • Future requirements;
  • Adaptability
  • Minimum energy usage;
  • Safety;
  • Life cycle i.e. capital costs versus running cost including the following;
  • Installation costs
  • Servicing and repairs to the system and controls
  • Upgrading user needs and improved efficiency
  • Aesthetics.

    The electrical installation must comply with the current edition of IEE Wiring Regulations BS.
3.1  Provision of Socket Outlets - the following is the minimum provision of socket outlets for any new build dwelling;
  • Three twin socket outlets in the living room
  • One twin socket in the dining room
  • Three twin sockets in the kitchen
  • One twin socket in the hall or landing area
  • All bedrooms to be fitted with two twin socket outlets
  • A washing outlet point (single un-switched socket outlet) engraved not suitable for outdoor use, to be provided at low level controlled by a 20 amp DP indicating switch fitted above the kitchen work top level.
  • A refrigerator point (single un-switched socket outlet) engraved not suitable for outdoor use, to be provided at low level controlled by a 20 amp DP indicating switch fitted above the kitchen work top level.
4.0  Cabling Services - sitting and placement of cabling should ensure minimum runs combined with easy accessibility and necessary upgrading.  All electrical design and installation work for dwellings should be carried out in accordance with the current edition of BS 7671 Regulations for Electrical Installations, including amendments, as published by the Institution of Electrical Engineers.
5.0  Water Heating:
  • An immersion heater circuit should be installed;
  • A 3KW top entry immersion heater complete with a removable thermostat should be fitted to the hot water cylinder.
6.0  Smoke / Heat Detectors:
  • Smoke and heat detectors should be provided in accordance with Building Regulations.
7.0  TV Aerial:
  • Provision should be made for a TV Aerial installation in each dwelling;
  • Consideration should be given, where appropriate, to the installation of a communal aerial system.
8.0  Telephone:
  • Provision should be made for a telephone installation in each dwelling.
9.0  Heating
  • A switched fused connection unit should be provided for a central heating pump.  To be connected to the general ring main circuit;
  • Where specified high level thermostat circuits should be installed;
  • A 13 amp un-switched socket outlet and plug top should be supplied for final connection and isolation of electrical heating pump;
  • Consideration should also be given to the provision of long-term additional cabling needs.
10.0  Services Installations - services design should be unobtrusive and integrated at the outset.  They should be capable of easy access for maintenance and replacement.  Services are categorised as follows:
10.1  Underground Services:
  • Foul and storm drainage;
  • Water supply;
  • Electricity supply;
  • “Cable” provided services:
    - Telephone
    - Television
  • Natural Gas.
Over-ground Services:
  • Telephone supply;
  • Electricity supply
10.2  Installed Services:
  • Central Heating;
    - Gas
    - Oil
  • Hot water supply
  • Electricity supply;
  • Fire protection
    - Sprinkler systems
    - Fire alarms
    - Dry risers
  • Telephone;
  • Television reception.
10.3  Utility Services:
  • Fuel storage;
  • Refuse storage;
  • Drying areas;
10.4  Issues to be considered
  • Maintenance/replacement implications;
  • Ease of use;
  • Safety in operation.
  • Accessibility;
  • Suitability;
  • Adaptability.