John Palmer
AECOM
Part of the BRE Trust
Part L 2013 – Launch event
Building Services Compliance Guides
John Palmer
08th October 2013, BRE
Part L 2013 Launch event – Building Services Compliance Guides
Process
 Working Groups
 CLG and other Government Departments
 Individual Representation
Part L 2013 Launch event – Building Services Compliance Guides
Aims
 Minimal changes to recommended energy efficiency standards
 Mainly to bring into line with BSEN Standards and EU Directives
 Ecodesign Directive 2009/125/EC
 Energy Labelling Directive 2010/30/EU
 No other changes for work on existing dwellings
 Note other requirements
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

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Renewable Energy Directive 2009/28/EC
Energy Efficiency Directive 2012/27/EU
Energy Performance of Buildings Directive 2010/31/EU
Microgeneration Certification Scheme, RHI, Green Deal
 SAP Product Characteristics Database
 Also corrections, clarifications, improved layout
Part L 2013 Launch event – Building Services Compliance Guides
Domestic – Defining ‘new’ and ‘existing’
New system means a fixed building services system installed:
a. in a new building
b. for the first time in an existing building
c. as a complete replacement for a system in an existing building.
1.7
Work on existing systems
A requirement of building regulations is that work on existing buildings should be
carried out in such a way that when the work is complete:
a. the work itself complies with the applicable requirements of building regulations
b. the parts of the building not affected by the work are no more unsatisfactory in
relation to the requirements of the regulations than before the work was started.
This means that when a system component such as a boiler or a room thermostat is
replaced, only the new component needs to comply with the standards in this guide
(which in some cases may be lower than for new systems).
It is not a general requirement to upgrade the rest of the existing system, although
this guide does include recommendations for minor upgrades where they would be
cost-effective or may be needed to ensure efficient operation of the new component.
Part L 2013 Launch event – Building Services Compliance Guides
Domestic – Wet systems
New systems
 New systems for gas-fired wet central heating in new and existing dwellings
should meet the minimum standards for:
a. boiler efficiency, system circulation, hot water storage, system preparation and
commissioning in Table 2
b. boiler interlock, zoning, and time and temperature control of the heating and hot
water circuits in Table 3
c. pipework insulation in Table 5.
Existing systems
 Components installed as replacements in existing systems should meet the same
standards as for new systems, except where indicated otherwise in Table 4.
 Table 4 in addition identifies good practice upgrades to the rest of the system
(beyond the requirements of building regulations) when making planned and
emergency replacements.
Part L 2013 Launch event – Building Services Compliance Guides
Part L 2013 Launch event – Building services compliance guides
Domestic - Control of space heating
a. Space heating demand in each heating circuit should be determined by
independent time control for that circuit, and either:
i.
a room thermostat or programmable room thermostat located in a
reference room served by that heating circuit; or
ii. individual networked radiator controls in each room on the circuit.
Part L 2013 Launch event – Building services compliance guides
Domestic – Zoning requirements
a. In dwellings with a total floor area4 up to 150 m2, zoning of space heating
should be delivered by means of a single heating circuit with individual
radiator controls such as thermostatic radiator valves (TRVs) on all
radiators except those in the reference room.
b. In dwellings with a total floor area greater than 150 m2, zoning of space
heating should be delivered by at least two heating circuits, each
controlled as defined in row 2.0 above, together with individual radiator
controls such as TRVs on all radiators except those in the reference
rooms.
c. Unless the hot water is produced instantaneously, as by a combination
boiler, the hot water circuit in all dwellings should be treated as a
separate zone with independent time control
Part L 2013 Launch event – Building services compliance guides
Domestic - Community heating systems
All pipe-work should be insulated to prevent uncontrolled heat loss when
passing through communal spaces that may otherwise suffer from
overheating.
Part L 2013 Launch event – Building services compliance guides
Domestic - Mechanical ventilation systems
c.
comply with European Commission Regulation No 327/2011
implementing Directive 2009/125/EC with regard to ecodesign
requirements for fans driven by motors with an electrical input power
between 125 W and 500 kW.
Supplementary information
GPG 268 ‘Energy efficient ventilation in dwellings – a guide for
specifiers’, is a source of further information.
Part L 2013 Launch event – Building services compliance guides
Domestic – Heat pumps
Part L 2013 Launch event – Building services compliance guides
Domestic – Heat pumps
Part L 2013 Launch event – Building services compliance guides
Domestic – Heat pumps
Heat pumps – electrically
driven
Coefficient of Performance (COP)
New build
Existing build
Air-toair
Space heating ≤12 SCOP 'D' rating for the median
kW
temperature range in EN 14825
All
others
Space heating
2.5 at rating
conditions in EN
14511
Domestic hot
water
2.0 at rating conditions in EN 14511
2.2 at rating
conditions in EN
14511
Part L 2013 Launch event – Building services compliance guides
Domestic – Heat pumps
Seasonal primary energy efficiency ratio (SPEER) is an
emerging rating figure reflecting the use of primary
energy for all types of heat pump, fossil fuel boiler and
gas-driven cogeneration technologies, as well as hybrid
systems where solar heating or a heat pump is backed
up with electric heating or a fossil fuel boiler.
Energy labelling with the SPEER will be mandatory
from 2015 under the Energy Labelling Directive. Testing
and rating will be in accordance with EN 14825, as for
SCOP.
Part L 2013 Launch event – Building services compliance guides
Domestic – Comfort cooling systems
c. comply with European Commission Regulation No 327/2011 implementing
Directive 2009/125/EC with regard to ecodesign requirements for systems
with a cooling capacity of less than 12 kW, and fans driven by motors with
an electrical input power between 125 W and 500 kW.
Part L 2013 Launch event – Building services compliance guides
Domestic - Circulators
 In accordance with European Commission Regulation No 641/2009
implementing Directive 2005/32/EC with regard to ecodesign
requirements for glandless circulators up to 2.5 kW:
 From 1 January 2013, standalone glandless circulators, other than those
specifically designed for primary circuits of thermal solar systems and of
heat pumps, should have an Energy Efficiency Index (EEI) no greater than
0.27.
 From 1 August 2015, standalone glandless circulators and glandless
circulators integrated in products should have an Energy Efficiency Index
(EEI) no greater than 0.23.
Part L 2013 Launch event – Building services compliance guides
Domestic - Lighting supplementary guidance
 A single switch should normally operate no more than six light fittings with
a maximum total load of 100 circuit-watts.
Part L 2013 Launch event – Building services compliance guides
Non-Domestic - Controls
Unless specified otherwise in this guide, it is recommended that, where
appropriate, building services are provided with controls that as a minimum
correspond to Band C in BS EN 15232:2007, ‘Energy performance of
buildings – impact of building automation, controls and building
management’
Part L 2013 Launch event – Building services compliance guides
Non-Domestic – Heating system efficiency boilers
Part L 2013 Launch event – Building services compliance guides
Non-Domestic – Heat pumps
Heat pump units
COP (Heat generator
efficiency)
Air-to-air
Space heating SCOP 'D' rating for the
≤ 12 kW
median temperature range in
EN 14825
All others except
absorption and gasengine
Space heating 2.5 (250%) at rating
conditions in EN 14511
Domestic hot
water
2.0 (200%) at rating
conditions in EN 14511
Absorption
0.5 (50%) when operating at
the rating conditions
Gas-engine
1.0 (100%) when operating at
the rating conditions
Part L 2013 Launch event – Building services compliance guides
Non-Domestic – Domestic hot water heaters
Part L 2013 Launch event – Building services compliance guides
Non-Domestic – Domestic hot water heaters
Part L 2013 Launch event – Building services compliance guides
Non-Domestic – Solar thermal systems
 For solar systems with a cylinder capacity of less than 440 litres or
collector surface area less than 20 sq metres, see the ‘Domestic
building services compliance guide’
 For larger systems, consult the CIBSE solar thermal design guide
Part L 2013 Launch event – Building services compliance guides
Non-Domestic – Comfort cooling
 Small increases to full-load Energy Efficiency Ratios (EER)
 ESEER is used for offices, ESEER being SEER with specified load profile
weighting factors:
a = 0.03 (100%)
b = 0.33 (75%)
c = 0.41 (50%)
d = 0.23 (25%)
 Plant seasonal energy efficiency ratio (PSEER) value for multiple chillers
may be calculated for use in SBEM
Part L 2013 Launch event – Building services compliance guides
Non-Domestic – Specific fan powers
 Small decreases in specific fan power
 An additional category for kitchen extract fans has been included
 The specific fan power of air distribution systems at the design air flow
rate should be no worse than in Table 35 for new and existing buildings.
Specific fan power is a function of the system resistance that the fan has
to overcome to provide the required flow rate. BS EN 13779 Table A8
provides guidance on system pressure drop. To minimise specific fan
power it is recommended that the ‘low range’ is used as a design target.
Part L 2013 Launch event – Building services compliance guides
Non-Domestic - Lighting
 Lighting in new and existing buildings should meet the recommended
minimum standards for:
i. efficacy (averaged over the whole area of the applicable type of space
in the building) and controls in Table 42; or
ii. the Lighting Energy Numerical Indicator (LENI) in Table 44 as
calculated by the procedure described in Section 12.5
Part L 2013 Launch event – Building services compliance guides
Non-Domestic – Lighting option 1 minimum efficacy
 Average initial efficacy increased from 55 to 60 luminaire lumens per
circuit-watt
 Additional control factors to reflect the greater range of available control
systems
Part L 2013 Launch event – Building services compliance guides
Non-Domestic – Lighting control factors
Table 42: Recommended minimum lighting efficacy with controls in new and existing buildings
General lighting in office, industrial and storage spaces
Initial luminaire lumens/circuit-watt
60
Controls
Control
factor
Reduced luminaire lumens/circuit-watt
a daylit space with photo-switching with or without override
0.90
54
b daylit space with photo-switching and dimming with or without override
0.85
51
c unoccupied space with auto on and off
0.90
54
d unoccupied space with manual on and auto off
0.85
51
e space not daylit, dimmed for constant illuminance
0.90
54
a+c
0.80
48
a+d
0.75
45
b+c
0.75
45
b+d
0.70
42
e+c
0.80
48
e+d
0.75
45
General lighting in other types of space
The average initial efficacy should be not
less than 60 lamp lumens per circuit-watt
Display lighting
The average initial efficacy should be not
less than 22 lamp lumens per circuit-watt
Part L 2013 Launch event – Building services compliance guides
Non-Domestic – Lighting option 2 LENI not to exceed specific limit
 Lighting Energy Numerical Indicator (LENI) is a measure of the
performance of lighting in kWh/m2/year
 Based on BS EN 15193 : 2007, ‘Energy performance of buildings’: LENI
calculation takes account of lighting power; use of daylight, occupancy
and illuminance controls; energy consumption of controls
 LENI should not exceed lighting energy consumption limit specified in
Table 44
 Table 44 takes account of recommended illuminance values in BS EN
12464-1: 2011, ‘Light and lighting - Lighting of work places - Indoor work
places’
Part L 2013 Launch event – Building services compliance guides
Non-Domestic – LENI limits
Table 44: Recommended maximum lighting energy consumption (kWh) per sqm per year in new and existing
buildings (lighting energy limit)
Hours
Illuminance (lux)
Display Lighting
Total
Day
Night
50
100
150
200
300
500
750
1000
Normal
1000
821
179
1.11
1.92
2.73
3.54
5.17
8.41
12.47
16.52
10.00
1500
1277
223
1.66
2.87
4.07
5.28
7.70
12.53
18.57
24.62
15.00
2000
1726
274
2.21
3.81
5.42
7.03
10.24
16.67
24.70
32.73
20.00
2500
2164
336
2.76
4.76
6.77
8.78
12.79
20.82
30.86
40.89
25.00
3000
2585
415
3.31
5.72
8.13
10.54
15.37
25.01
37.06
49.12
30.00
3700
3133
567
4.09
7.08
10.06
13.04
19.01
30.95
45.87
60.78
37.00
4400
3621
779
4.89
8.46
12.02
15.59
22.73
37.00
54.84
72.68
44.00
5400
4184
1216
6.05
10.47
14.90
19.33
28.18
45.89
68.03
90.17
54.00
6400
4547
1853
7.24
12.57
17.89
23.22
33.87
55.16
81.79
108.41
64.00
8760
4380
4380
10.26
17.89
25.53
33.16
48.43
78.96
117.12
155.29
87.60
Shop
window
96.80
192.72
Part L 2013 Launch event – Building services compliance guides
Non-Domestic – Pumps and circulators
a. In accordance with European Commission Regulation No 641/2009
implementing Directive 2005/32/EC with regard to ecodesign
requirements for glandless circulators up to 2.5kW:
i. From 1 January 2013, standalone glandless circulators, other than
those specifically designed for primary circuits of thermal solar
systems and of heat pumps, should have an Energy Efficiency Index
(EEI) no greater than 0.27
ii. From 1 August 2015, standalone glandless circulators and glandless
circulators integrated in products should have an Energy Efficiency
Index (EEI) no greater than 0.23
b. Variable speed glandless circulators should be used on variable volume
systems.
c. If a water pump is used on a closed loop circuit and the motor is rated at
more than 750 W, then it should be fitted with or controlled by an
appropriate variable speed controller on any variable volume system. On
water pump booster sets with an open loop circuit, the static head
should be checked before an appropriate variable speed controller is
used.
Part L 2013 Launch event – Building services compliance guides
 Thank you for your attendance.
 The final versions of the Guides will be available from the DCLG website.