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Domestic Heating Compliance Guide, May 2006

1. v YUM SCOUEDIOOOE ul p uolssiuuuuo2 q pinous 1lu uudinb y sionuo pue sduind yiomadid se yons juswidinbs p eroosse ulu 194 960 Liese SWa SAS MAU 10 p ull p sy efpiots Jop JOY E JO 19 10q E JO 215 1 v JO uon lduuo2 UC UOSJ8d 1lu 1 duuoo E YIM 1 JOU SI J e1sui Uu Jl SU pue 6 5 y uol up dx in e auf p nous J e su SUL BultuoissituutuoO SUUV S S Sune u enua 142m JOY HS LUOD Ul 1 B A JO 10 949LId JO BDOD 2661 669 58 sp4epue1S usuug lE S lli Jo uone nuuno52e Jo o si loq uonguiquuo2 JO N3119 JOY v pue si e u JOYEM O 1972M D BY 1291 O pew aq pinous suolsiAoid slu uu uinb J 210045 pue s onpold uwes 40 suon onusul e6974 eg Ul USD suu s s UOISSILULUOO pue o moy uo soUePING y mojo 0 pinom UO S AO pue 29 Jo uollguuoj et pue 40180 101 U09 o 1In24I9 Arewnd y o p ppe eq pinous uone nuuJoj d lloq Meu e ulile sul no p usnil SUM S S MAU JO SV UOlIIILI q d sued oog SP X SSeUPIeY egw SUIELU y uoneleysul S JOINJOLJNUCLU 19 10q BY o 19491 Osje pinous su lie1su 1 Jop
2. y o pappe pinous UOHEIDULUOL 1u uu1e 1 1972M 801 e Wass y JO Buung J loq Meu e ulile sul 1no p usni pue AjyBnosou eq pinous suu ls s Bunesu enu lu une 41 4 BA pue uolyesedaid uu 1s s p p nunmuo2o g lqeL 43 Table 19 Minimum provisions for system controls for solid fuel central heating systems in new and existing dwellings System control Minimum provisions for new systems Minimum provisions for replacement systems Supplementary information All appliances except open fires Thermostatic control of the burning rate Thermostatic control of the burning rate based on temperature of vvater in the boiler where the appliance uses a boiler Automatic feed appliances Zoning e Dwellings with a total usable floor area up to 150m should be divided into at least tvvo space heating zones vvith independent temperature control one of which is assigned to the living area e Dwellings with a total usable floor area greater than 150m should be provided with at least two space heating zones each having separate timing and temperature controls e Single storey open plan dwellings in which the living area is greater than 70 of the total floor area sub zoning of temperature control is not appropriate No minimum requirement but as far as it is practicable and economic to do
3. apiAoid osje Aa nq spou d Jequin s 1 u ay 104S O SI SN JAY UOSP 1 118 1 BY JEN pijos JO uonejjesu ay ul Aejd o yoz JOfew e aney ued S U 591015 1 B A 101 ZIL SUU S S MEU JO SV 5 onuoo 1lu eAInb ue 0 9u 194 1 10 snye s wily p 191sIB 1 ISg e se uons y uo Buill qe p nous 5 joy 4eddoo p lu A D MJ u 1e u SS A Jo d Aep UM u SSO 1e u Bulpueys s ni ul Ayloedeo euluuou SS A Jo d uonepuuo ul y UUM e ALE p nous S SS A E401S 49 eM 104 IN 71 SI SS A BE 101S Jon 104 JO 4 5 15 6 1 SUOITEDIJIONds uol jelo00ssv SJ INJOLJNULEN 1972M 9U JO 2767 10 g T uono s y JO sy u uu uimb 1 uonensul y jaa p nous suu ls s Beuols Mewd a 4 UNA p sn aq jou pinous suu s s p lu Au n D suone n6 k yim se Apoq sayjoue Aq p q JO 4100 Jop v uoy Jo peog usnug 94 Aq p y q 40 19022 98 Alduuoo plnous sjonpoid s l s S 5 JayeM 104 p lu Aun 2 9994 Sg jo slu uu unb i 1e
4. 4o Edionuy YM 1ndul UUEL AO paesu pinous si llonuo Asoyedionuy Hl 6 0 1000 1891 o HUEL Mo DOUM qo lqns sajqeo Bune y Lunoe ABU Aou rol siuulxeuld 114 s1e1souu u1 EUI SU U D ayesedas pue swooiyjeg q ul s qqe Buey Huljoe o p ufisse q pinous eae 100 BY 10 9602 lqeuuuueiBoid 10 sjuawasinbes pue s lqe Sunp u yuez moj o poubisse pinous eae 100 08 BululeyUOD swoo jediound l WOOd IEnpiAIpul 182 o 2 lqns uo s jqe Buneoy yue uones do 199109 JO ss uyolu UA SUl SAS AO SE D UBISSE aq pinous se Je Jo BI uuuus9 e nrey pjnoys suu 1s s Beuols ABieue 1uBiu yuez moj Bune u Joo pepun lqe v l uononnsuoo Beuols Su102 3 v uoneusuo ul UOISIAOId ulnulluly suu 1s s Bune u Jo 01 UOD pue uon nnsuo 104 SUOISIAOJG WNWIUIN 82 QEL 57 Section 8 Heat pump systems This section provides guidance on the specification of heat pump systems in dvvellings Definition of a heat pump A heat pump is a device which takes heat energy from a low temperature source and upgrades it to a higher temperature at which it can be usefully employed for heating and or hot water Heat pumps may supply all
5. Is it possible to install a condensing boiler in this building No Complete the form Complete I the form and for installation declaration option with lowest assessment score Does total assessment score Box T show that installation is uneconomic Customer willing to install a condensing boiler anyway No Yes Install non condensing boiler in position chosen by customer Install condensing boiler in position chosen by customer 6 Guide to the condensing boiler installation assessment procedure for dwelling ODPM 2005 7 See Note 3 in the Notice to Householders on the calculation and declaration form 69 Completion of the assessment form 1 First complete section 1 of the form 2 If a defective boiler is being replaced within 3 years of the date of original installation under the original manufacturer s or installer s guarantee tick box X and sign the declaration in section 14 of the form omitting sections 2 to 13 Othervvise continue belovv 3 Complete sections 2 and 3 of the form 4 Decide what fuel is to be used for the new boller gas LPG or oil and complete section 4 of the form 5 If an oil fired boiler is to be installed before 1 April 2007 then proceed to section 14 of the form omitting sections 5 to 13 Othervvise continue below 6 Complete sections 5 and 6 of the form 7 Consider ALL feasible condensing boiler positions and extended fl
6. 1601 Up Heu q 4194 uo Apoq Io4uo Buipiinq y Ainou pue Buljjamp S nsix ue u JO se y Ul Jgp ou snou JO Vapjing ay o QIN souel dwoy suonemn6 k Buipiing e puss I ouA HOO inou Pinoys J lle1su V HOO 94 819 duuo2 si s lloq p lzli SE e Jo uoljpjje1su v 9DUD ale jenuew Jasn sjoinjoeynuew y Sulpnioul sasn y o uonel do SU pue uu 1s s y JO uoieuejdxe iln E auf Pinoys H lleisul 24 q uu 1s s BE4O1S H YAN joy 10 pue 4 lloQ y 0 2110005 oa Suononusul s u l suon onusul S JoINJOeJNUBW v YUM SCOUEDIOOOE ul p uolssiuuuuo2 q pinous 1lu uudinb y sionuo pue sduind yiomedid se yons 1lu uudinb p eroosse Uu Liese Beuols Join JOY E 40 llOQ E JO UOUSISISUL v JO UD Buluol ssitutuoo uoneuuo ul Sunsix ul suu 1s s 1lu uu 2Oep d 1 410 UOISIAOJd WNWIUIN sBuIll AAp Bunsix pue m u u suu 1s s M U JO UOISIAOId WNWIUIN lqeL 14 s ju uu uanb u O4JUOD M OH QU pue mei duu91 pue Buru 2 p lo ds y s ul 181 l s 4S Iojluoo 1u uieBeugui OO AUS 51 5 1 0 O uv yn 6uio slojuoSB6ump u AAA MSQ M VVV VL sieIn 52 Jnup j sionquo2 JO UOIJEIDOSSY
7. 50 Table 23 Minimum provisions for controls systems vvithin dvvellings for community heating Minimum provision for new systems Supplementary information 1 Zoning Dwellings with a total usable floor area up to 150m should be divided into at least two zones with independent temperature control one of which is assigned to the living area e Dwellings with a total usable floor area greater than 150m should be provided with at least two space heating zones each having separate timing and temperature controls In single storey open plan dwellings in which the living area is greater than 70 of the total floor area sub zoning of temperature control is not appropriate 2 Time control of space heating e Time control of space heating should be provided by i a full programmer two or more separate timers providing timing control to each zone or iii programmable room thermostat s to the heating circuit s e For dwellings with a total usable floor area greater than 150m timing of the separate space heating zones can be achieved by i multiple heating zone programmers or ii a single multi channel programmer Where the hot water is produced instantaneously such as with a plate heat exchanger time control is only required for space heating zones Time control of domestic hot water heating using a cylinder is not considered essential for CH and could be a disadvantage with CHP based system
8. The efficiency of this appliance has been measured as specified in insert appropriate entry from Table 6 and the result is x The gross calorific value of the fuel has been used for this efficiency calculation The test data from which it has been calculated has been certified by insert name and or identification of Notified Body The efficiency value may be used in the UK Governments Standard Assessment Procedure SAP for energy rating of dvvellings AND c n nevv dvvellings each appliance should be capable either independently or in coniunction vvith room thermostats or other suitable temperature sensing devices of controlling the temperatures independently in areas that have different heating needs e g separate sleeping and living areas In existing dvvellings wherever practical temperature controls should be upgraded to the standards required for new dvvellings Table 6 Acceptable appliance types for fixed natural gas and LPG gas fired space heaters for use as a primary heat source British Standard designation appliance type BS EN 1266 2002 ndependent gas fired convection heaters incorporating a fan to assist transportation of combustion air and or flue gases BS 7977 1 2002 Specification for safety and rational use of energy of domestic gas appliances Radiant convectors BS EN 613 2001 Independent gas fired convection heaters BS EN 13278 2003 Open fronted gas fired independent space heaters Gas
9. Glossary of standards relevant to solar hot water heating BS 7431 1991 BS 6785 1986 Method for assessing solar water heaters Elastomeric materials for absorbers connecting pipes and fittings Code of practice for solar heating systems for swimming pools TS 12977 3 2001 Performance characterisation of stores for solar heating systems TS 12977 2 2001 Thermal solar systems and components Custom built systems Test methods TS 12977 1 2001 Thermal solar systems and components Custom built systems General requirements BS EN ISO 9488 2000 Solar energy Vocabulary BS EN 12976 2 2001 Thermal solar systems and components Factory made systems Test methods BS EN 12976 1 2001 Thermal solar systems and components Factory made systems General requirements BS EN 12975 2 2001 Thermal solar systems and components Solar collectors Test methods BS EN 12975 1 2000 Thermal solar systems and components Solar collectors General requirements ISO 9553 1997 Solar energy methods of testing preformed rubber seals and sealing compounds used in collectors BS 3734 1 1997 Rubber tolerances for products Part 1 Dimensional tolerances BS 903 0 2003 Physical testing of rubber Part 0 General BS 6920 2000 Suitability of non metallic products for use in contact with water intended for human consumption with regard to their effect on the quality of water
10. sjonpoid suu 1s s apos 1972M JOU p lu Aun q 000Z L 9994 58 10 91 J Bueuox ye y Sunp u Ayeljixne pue sso 1894 y Un lduuo2 pinoys sjass a apos Jop 104 Jaddoo p lu A e SMO 0 Sp Oe SUOISIAOIG uunuulului v E4O S 1942M pazeay ejos 1 JO Mau 104 abpious 49 2M p le u 1d lejos 7 b nunuo Le lqeL 64 Table 32 Minimum provisions for labelling commissioning and documentation for solar hot vvater systems Minimum provision Supplementary information 1 Labelling of solar collectors and hot vvater stores a All solar collectors should have a visible and durable label displaying all information required according to BS EN12975 and including at least the follovving name of manufacturer collector type serial number year of production gross area of collector aperture area of collector net absorber area of collector maximum operation pressure stagnation temperature at 1000VV m and 30 C volume of heat transfer fluid vveight of empty solar collector labelling of solar heated vvater storage vessels vvithin solar domestic hot vvater systems b All hot water storage vessels should carry a label vvith the follovving information manufacturer s name nominal overall capacity in litres standing heat loss in kWh day type of vessel auxiliary heating heat exchanger performance in kW where present In addition to the
11. JOY uLy O 9 oO PjNOD 1 Lu0S ULY 1942919 Gap ioo j 101 e YUM S UH MD l 104 p lleysul q pinous JB YEM 104 p JoO s JO By 0 14 2 10nu02 Ie91ueuoS uu ouu8u e UOS od LUNWIUIWW e SV O A EA Hod 9914 JO UOZ E pue 1e sOuu8u e UA aq pinoys suu 1S s 19 em JOU ONS UUOG e UOISIAO 1 1 e Se 19 pinoys JOPUI AD 20 1 1 Aoq II pue Jo uoneuiquuo2 I s 0 S oem JOY JO S UOZ u Ul SIOyeIPeI 2 UO SAHL S A BA JOJeIPeY 018180 Bier 5 eee i se uons 5 0 11400 JOyeIPeJ ENPIAIPUI pue uoz urew y u 1e sOuu8u WOO qeuuuueuBoid JO 1e1sOuuu u WOO I Bune u H UN pue p oeld 1 Bulaq si s pull49 Jeu JO S UOZ e u S eE SOWJ9Y WOOL JO sle1lsouusu WOO oeds Jo omuo5S you y juo alain 54 5 5 4 104 Buisn q pinovs y UIY IM S uoz Jo ojluoo s uoz Sune u 5eds JO p nb AjUO s jojluo2 uul lloq UOIYEUIQUUOD e yym se YONs AjsnosuejUe sU 51 1972m 104 24 AOQE Al
12. l BY uo pue emie s SeIn a pJnuepuu u Ued SUV 1S S 01 UO09 UO S E D aso A PA UOZ y JO p minsqns pino dund puossas e ayeudoidde jou S A PA uoz L 5 15 jew y SE uons S8OUL SLUNDIIO uuos Ul OS V lu uu uinb 1 511 JBSW JOU SBOP 51 0 1 00 1 7eM JOY 2I1199j9 uou Jo aen o saaw l1eued s l Jo j uueuo ninuu ajus e Jo 96 uoz Bulyeay u sAs A0 p A lu2e Q UBD SIU S OJJUOD pue Dun HulAey yore YNI JOY uLy O 9 oO PjNOD 1 Lu0S ULY 1942919 Gap ioo j 101 e YUM S UH MD l 104 p lleysul q pinous JB YEM 104 p JoO s JO By 0 14 2 10nu02 Ie91ueuoS uu ouu8u e UOS od LUNWIUIWW e SV O A EA JO UOZ E pue 1e sOuu8u e UA aq pinoys suu 1S s 19 em 104 OS UUOG e UOISIAO 1 1 e Se 19 pinoys JOPUI AD 20 1 1 Aoq II pue Jo uoneuiquuo2 I s 0 S oem JOY JO S UOZ u
13. uepin6 y mojo 0 q p noA uoisiAo d lqeuose k 5pnis pue ajeos Jo UOREULMO y pue 1018011 JO4JUOD o No110 Ae ay 0 peppe eq pinous yu unp n swiajsXs Bulle u JEJEM JOY HS LUOD Ul JUSS 1972M IEOIUeU e 1S S y JO Buly eu Buunq q 49 eM pue JO 140 11 11 104 8D1 DBI JO po2 Z661 6S2 SG q lloq Mau eL JNO p usni spapepuep sS 511114 SLU 1S S MAU JO sv pue AjyBnosou pinous suu 1s s Hulyeay je nu o E uu ls s p 999 Sg Jo 51 JeBueyoxe yeay pue sso 1894 y YUM Bu duuoo se q pinoys uolonusuo2o s ddo o ou 31E YOIUM SJ PUI AD uu uos oluoo jusjeainbs ue o 5u J J i 10 snes uuu p 191sI B 41 ISg E se yons 19npoid y uo Sulll qei pinous si pui S JOY J8ddoo Al Ul 894 s B pyopd pue sun abesojs 1 B A M l kep JUN if 650 aa JOY 104 621 10009 0661 9022 eg eem u Ayloedeo EU L OU spou ul 1S pue siu uu unb ti si pulj o SS A JO d u dg s sodind ns ulop uolguuoju BUIMOJ O 10 Papuli addo 2002 99 1 eg y YIM e Aueo p nous S SS A 15 49 e
14. ysewiyoueg y sn o elle aq YHPUVUOU e DIOU oym sajuedwos Buyinjoejnuew IUQ aq ued suo iqluu pue suaueajo uu81S s JO sjlejap jdwex 4104 Spa pue HuldIAIaS YUM 1S SSE O JOP1O Ul UONe EJSU BY JNOGE UO JEWIOJU pioo l S lE1SUI dj y O sfenueW 18 1 SIBQUIBL Jaunjoejnuew J1 jloq 586 OIHH Ile u q Ilim SIIMN9 uO BujuoissiwWwoD yewyouag V e 4 sn pu y 10 qu B5p p ulodde ue Bulsixe u Mio JO SB y Ul A4 plou snou y JO plinq v o papiAoid aq PINOYS 19 yIeuuuSuegi 4L 1 Hed YUM oupl duuo2 ul u uudinb y Jo uoneJsado 142101 MOUS S NS 1 y pue pew u q ABU SY U u IS 1841 D402 UE y 181 OS 5 5 y Pulu OlSSIUILIO suosi d y Aq uol lduuo2 104 vuedde y y m 191 02 P S4 DlOU U YABUVUOU T HO O2B STES JNO u q sey Buluoissiuuuuo2 15U moys o pasn aq UBD JSIPJOOYD BuluoIssiuuuuoO YIeWIYOUEG OY e 15 5 u L SUM S S MAU 10 SV JOM y JO lu9Uu909Uu uuLuoo y o qoud Apog onuo Dumping y p ou pinous UO y 1401591 uosi d y JO US U u u suone nB tJ Buipiing y YUM Bu J S Ji s Jo s sodind y 40 uosi d 1u 1 duuo2o e Uu 191 JOU 51
15. 0 u sou eq pinoys An ajqeyreae 51 18 109 UH 3S4S e suu 1s s 1u uu 2epJjd a l 10 UOISIAOAd Ssuu 1s s M U 40 UOISIAOAC WNWIUIN Bunp u eJdlu o l n pijos Jo Suluolss ululo pue uonp ed ld ul s4S abes0 s OY Beiols f n WId SAS 10 SUOISIAOJG WINWIUI SL lqEL 42 15V ay Ues D y u qo ue s yeudoidde mount ease O1002 P OU 209 JO poom G A D v SE Ionuo2 Bu jilou uaym u ye1 p nous geo s up ldde 104 Jap oussnoy y o Ul 1S4S aHes0 s Jon Jou JO pue 4 lloQ sejnoied y o lH ds Hulyesedo y 4 AO p puey pue p uleidx sey y 161 pue EL M 149611115 s y 9012118 1 5 y pue suone n6 u UA SCOUEDIOOOE ul 01851 pue UOUSISISU no p lue2 sey y 1eu1 ASu l1 eduuo2 siy UIYYM Me Wu UOSJed e yong gL TGV pue vav ray dav 40 sjuewerinbes y SJ A09 YOIUM SUOSI d 11919 8 y SVL4H Aq D 191SIB 4 51 oym llE3SUL Ue UOe e SU ay ino Aue pinous
16. 8214 e uu l1s s y JO Du peu Bung pue p ue o juBnouou pinous swe sAs Bulyeay en yu unp n 19 eM pue uH 3S4S p uoneuuo ul suu 1s s 1lu uu Oep d 1 410 UOISIAOJG WNWIUIN sBuljjamp Sunsix u sBuIll AAp Bunsix pue m u u suu 1s s M U JO UOISIAOJd WNWIUIN p nunuo2o 6 lqeL 27 s ju uu uanb u O4JUOD M OH QU pue mei duu91 pue Buru 2 p lo ds y s ul 181 l s 4S Iojluoo 1u uieBeugui OO AUS 51 5 1 0 O uv yn 6uio slojuoSB6ump u AAA MSQ M VVV VL sieIn 52 Jnup j sionquo2 JO UOIJEIDOSSY l BY uo pue emie s SeIn a pJnuepuu u Ued SUV 1S S 01 UO09 UO S E D aso A PA UOZ y JO p minsqns pino dund puossas e ayeudoidde jou S A PA uoz L 5 15 jew y SE uons S8OUL SLUNDIIO uuos Ul OS V lu uu uinb 1 511 JBSW JOU SBOP 51 0 1 00 1 7eM JOY 2I1199j9 uou Jo aen o saaw l1eued s l Jo j uueuo ninuu ajus e Jo 96 uoz Bulyeay u sAs A0 p A lu2e Q UBD SIU S OJJUOD pue Dun HulAey yore YNI
17. JO Huluoz qns Base 100 IEIOL BY JO 0 UeY H P MB si Pare Dua v YOIUM l sBuljiSAAD uejd uado 15 uoz UO SE olluo2 0 q SI04U02 pue SulApu yoee s uoz pinom Ul 1S S Duugou eoeds e 104 UOISIAOId Bulyeay aoeds om sea 1E YIM pinous uu0S i Ue 49 e016 Bare 1001 5 520 E UM SBU H AAQI a qeuoseas eased yorym Ul paveda s AjUO J jioq ease y pauBlsse s YOIUM JO BUO Joru JUBPUSsdepuU s uoz y 1d ox SUV S S MEU 410 p ulj p SV SUU S S m u JO SV Suu s s 1u uu 2pjd i 40 SUOISIAOJC WNWIUIN UA s uoz Dua veds om seal 16 OI p piAIp pinous Lu0Si 0 dn eae ool lqesn 1530 e UI SBuIllSAG MOOUSIUL JOU s op UOJe SAYL S A PA SOl e1lsouusul aen HO p yoyms duund pue i lioq ay 4em joy 10 Huey EdS Jong JO puguu p ou SI 3194 U UM FEU OS D IIA S OJJUOD YAUM Ul M OH U O4JUOD pinous suu s s p seq ajog suu 1s s M U 40 SuOISIAO4d WNWIUIN Bune u seds y oH qul J liog 10nuo ui ls s SHUI JaMp MOU u sui s s Huey e41 U99 p ulj jio 10 SjO1 UOD W JS S 10 SUOISIAOJG WINWIUI OL lqEL 28 Table 11 Minimum provisions for insulation of pipes serving oil fired central
18. heat pump Supplementary information further guidance on heat pumps EU Directives for Machinery Safety Low Voltage Pressure Equipment Electromagnetic Compatibility SAP 2005 DEFRA Carbon Trust Energy Technology List Heat Pumps www eca gov uk EN 14511 Air conditioners liquid chilling packages and heat pumps with electrically driven compressors for space heating and cooling ISO 13256 Water source heat pumps testing and rating for performance Part 1 Water to air and brine to air heat pumps and Part 2 Water to water and brine to water heat pumps Best Practice Programme Good Practice Guide 339 Domestic Ground Source Heat Pumps Design and Installation of Closed loop System EN 378 Specification for Refrigerating Systems and Heat Pumps Safety and environmental requirements 61 Section 9 Solar vvater heating This section provides guidance on the specification of solar vvater heating for dvvellings 9 1 Scope of guidance The guidance in this section covers solar systems vvith a collector area of less than 20m and solar heated vvater storage of less than 440 litres t does not cover systems intended to contribute exclusively to space heating or systems providing heat exclusively to heat swimming pools It should be used in conjunction with the guidance on water heating contained in the fuel based sections of this guide n order to comply with the requirements of Part L solar water heating in
19. heating systems Minimum provision Supplementary information n nev systems pipes should in the follovving cases be insulated with insulation complying with the requirements of the Domestic Heating Compliance Guide in line vvith the maximum permissible heat loss indicated in the Supplementary Information column and labelled accordingly e Primary circulation pipes for heating and hot water circuits should be insulated wherever they pass outside the heated living space or through voids which communicate with and are ventilated from unheated spaces Primary circulation pipes for domestic hot water circuits should be insulated throughout their length subject only to practical constraints imposed by the need to penetrate joists and other structural elements All pipes connected to hot water storage vessels including the vent pipe should be insulated for at least 1m from their points of connection to the cylinder or they should be insulated up to the point where they become concealed If secondary circulation is used all pipes kept hot by that circulation should be insulated For replacement systems whenever a boiler or hot water storage vessel is replaced in an existing system any pipes in the situations above that are exposed as part of the work or are otherwise accessible should be insulated with insulation complying with the requirements of the Domestic Heating Compliance Guide in line with the maximum permissible hea
20. pue II JO UODSUIOUIOOE A JO N9110 YORS 0 Seu M JO S1E SOULM U Woo il JO uueuo ninuu abuis e 104 JO 164 uoz ldninui pue Sune u oeds uloq JO ojlluo2 Buru q p A luoe Buis e ney lqe1d o2oe si SE SIY Ul q ued s uoz Bune u oeds ed s y Bulu Lu0S Uey Ja eE01H Bore JOO apen e 0 E S U H MD 104 Ju s ud JOU 51 49 EM JOY v 104 O1JUOD 1 eA 20U y JO Buruy YUM S INDIIO Hulyeay y o s 1elsouu u WOO ajqewweipod il aul ayesedes pue uu s s Ju uu 2op d J e u JO 1InO4I9 YORS o ojluo2 Buluun BulpiAoid saw 5 JO OM I Bune u p oe d 1 Buraq s H YA 104 juo 3d X suu s s MAU JO SY INDIO YORS o Bulu ayesedas yym nye A0 peplAoid pinous Bulyeay 1972m pue EdS Jo onuo2o uu 4 BM pue 5 JO 10 nu02 OWL 4 lloq uonpulqulo e UA SE 5 Ajsnosue Ue SU sI 104 v J ou 51 uoz Jeun JOY V s uoz suu s s MOU JO p ulj p SY s uoz Sunp u veds o uon ppe ul uoz 1942M 104 le1ed s e ney pinous sHuljjamp Bune u BAA yeudoldde jou 51 oHNuo miel dul
21. v Aq p rdiinui pinoys lAH S MOU oU Bune H ns woq v xipu ddy jo v oni JUdIAYIP e s sn soue dde yeay 10 uu 1s s Bune u m u y U ysanbas uo s onpold ul u 104 youms 10 l n 1u uu Sp d ti Si lloq Buie u sanjea Mngq3s i ddns osye Uu suasnjoeynuepy 002 dVS JO 10 Er yenu YUM s1 4009 Bue1 p lli SED Ce uono s s n EA U TOLH 19470 y IM wo U ye q Aew sanjen A U L L UAMOUN s u JO uol 28s y u se q pinous si yoo Bueu uolsnjJuo2 PIOAe O SD4OA JO UNO pee Be Ue ul you s q o 5u l dde 1 Wa shs YUM p ulquuoo ae yey ss lloq Bulyeay 104 Aou l LH d lloq Oo sanjea MNGGAS sepiaaid ainjesayly ssasnjoejnueypy Su ASu lo Jj9 J poveda Buraq S u s JO 70208 uey ss q JOU 2411 Aq paul uon npoud ul ou AUeW p llonquo y Jo 1 fEUOSE S y UCU Ji JO 9682 uey SSE q 1ou 566 jeinyeu Aq paul J pinous SE A SP SH IOQ JSOW UO uolpuuoJuI 3 NMO S UIOd BHe USIIOd OM ULY JOU ynaqq3s u r lH s lloq au 4002 IHdV 0 sod ieAoldde p epdn Aye nBas s pny ul pue ynBo ssajiog MMM pue SUV 1S S meu 104 se uBis p YOIyM SHul jamMp u JUSLUNDOP SI
22. with expansion vessel is recommended e Constant water flow should be maintained through the heat pump e Pipe sizes should be in accordance with the manufacturer s recommendations Installation e Installation should be carried out by an installer approved by the manufacturer If during installation access to the refrigeration circuit is needed a competent refrigeration and air conditioning engineer with a valid refrigerant handling certificate and or an engineering services skillcard should carry out the vvork e Installation of the dwelling s water distribution system should be undertaken by a competent central heating specialist TIMSA HVAC Guidance for Achieving Compliance with the Part L of the Building Regulations c Domestic hot vvater For full heating the heat pump should be capable of suppiying water in the range 60 C to 65 C If the heat pump is not capable of supplying water at these temperatures supplementary heating should be provided and controlled as described in other sections of this guide The domestic hot vvater system should include a tank thermostat and a time clock to optimise the time taken to heat the vvater The heat pump may be utilised for all or part of the DHW load During the DHVV heating period the heat pump may not necessarily be providing heated vvater to the space heating system 59 Table 29 continued d Controls Heat pumps unit controls should i
23. 5 Notification of building vvork 9 Section 2 Gas fired space heating and hot water systems 10 2 1 Scope of guidance 10 2 2 Gas fired wet central heating systems 10 2 3 Gas fired range cookers with integral central heating boiler 16 2 4 Gas fired warm air heating 17 2 5 Gas fired fixed independent space heating appliances 19 2 6 Gas fired fixed decorative fuel effect fires 21 2 7 Gas fire for secondary space heating provided as part of a combined fire and back boiler unit 21 Section 3 Oll fired space heating and hot water systems 23 3 1 Scope of guidance 23 3 2 Oil fired wet central heating systems 23 3 3 Oil fired range cookers with integral central heating boilers 29 3 4 Continually burning oil fired vaporising appliances providing secondary heating or hot water 30 3 5 Oil fired fixed independent space heating appliances 31 Section 4 Electric heating systems 32 4 1 Scope of guidance 32 4 2 Electric boilers serving central heating systems in new and existing dwellings 32 4 3 Electric heating systems other than central heating using electric boilers 36 Section 5 Solid fuel heating systems 38 5 1 Scope of guidance 38 5 2 Solid fuel appliances for primary heating 38 5 3 Central heating systems using certain types of solid fuel appliances 40 5 4 Solid fuel appliances for secondary heating 46 Section 6 Community heating systems 48 6 1 Scope of guidance 48 6 2 Definition of community heating CH 48 Section 7 Underfloor heating systems 55 7 1 Sc
24. ISO TR 10217 1989 Solar energy water heating systems guide to material selection with regard to internal corrosion BS 8000 Workmanship on building sites BS 7206 Specification for unvented hot water storage units and packages BS 7671 Requirements for electrical installations BS 1566 Copper indirect cylinders for domestic purposes BS 4814 Specifications for expansion vessels using an internal diagraph for sealed hot water heating systems BS 7074 Application selection and installation of expansion vessels and ancillary equipment for sealed water systems BS 5422 Methods of specifying thermal insulation materials on pipes ductwork and equipment in the temperature range of 409C to 700 C BS 5449 Specification of forced circulation hot water central heating systems for domestic premises BS EN 12831 BS EN 12828 BS 6701 Telecommunications equipment and telecommunications cabling BS 5970 Code of practice for thermal insulation of pipes and equipment BS 6700 Specification and design installation testing and maintenance of services supplying water for domestic uses within buildings and their curtilages 67 Section 10 Individual domestic micro combined heat and povver This section provides some guidance on the specification of micro combined heat and povver CHP systems for dvvellings At the time of writing the guidance for micro CHP is still under development and is expected to inc
25. Practice in Housing Domestic Heating by Solid Fuel Boiler Systems CE 47 47 Section 6 Community heating systems This section provides guidance on the specification of Community Heating CH systems in dvvellings that if followed will satisfy the minimum requirements of Part L of the Building Regulations Although specific reference to CH is not made in ADL1A and ADL1B the paragraphs in each document dealing with central heating and hot water systems apply to CH Procedures for calculating the energy use and carbon emissions associated vvith CH are included in the Standard Assessment Procedure SAP 6 1 Scope of guidance The guidance in this section applies to CH systems It covers CH using bollers as the heat source as vvell as those that use lovv carbon heat sources such as Combined Heat and Povver CHP biofuels heat pumps and solar panels Guidance is provided for two scenarios e Where dwellings will be connected to a new CH scheme and e Where dwellings will be connected to an existing CH scheme Requirements for the central heat source should be in accordance with the Non domestic Heating Cooling and Ventilation Compliance Guide in support of Part L except where specified in this section Guidance given in the warm air heating or underfloor heating sections is also relevant to CH where these types of space heating systems are used with CH The remainder of this section providing guidance on CH assumes that a rad
26. air systems constant water flow should be maintained through the heat pump Installation should be carried out by an installer approved by the manufacturer Installation that requires access to the refrigeration circuit or the connection of split systems should be carried out by a competent refrigeration and air conditioning engineer holding a refrigerant handling certificate and preferably an engineering services skillcard TIMSA HVAC Guidance for Achieving Compliance with the Part L of the Building Regulations 60 Table 30 continued b Controls Heat pump unit controls should include e control of room air temperature if not provided externally e control of outdoor fan operation for air to air units e defrost control of external airside heat exchanger for air to air systems control for secondary heating if fitted on air to air systems control of external water pump operation for ground to air and water to air systems protection for high water temperature protection for high refrigerant pressure protection for indoor air flow failure protection for external air flow failure on air to air units e protection for water flow failure on ground to air and water to air systems External controls should include e room thermostat if not provided internal to the heat pump to regulate the space temperature and interlocked with the heat pump unit operation e timer to optimise operation of the
27. and Approved Document L1B before the sections giving technical guidance on compliance The Approved Documents can be viewed on www odpm gov uk For nevv dvvellings the provision of heating and hot vvater services systems has to be considered as part of the overall design of the building For heating and hot vvater services systems vvorks in existing dvvellings provision can be considered in isolation Both Approved Documents refer to this publication as the source of detailed guidance on vvhat is reasonable provision Section 1 4 Replacement of primary heating appliances n order to comply with the eneroy efficiency requirements replacement appliances providing primary space heating and or hot water in existing dvvellings should meet the following conditions Replacement not involving fuel or energy switch Where the primary heating appliance is replaced by one using the same fuel or energy supply the seasonal efficiency of the new equipment a Should be as stated in the relevant fuel based section of this guide AND b Not worse than two percentage points lower than the seasonal efficiency of the controlled service being replaced If the efficiency of the appliance to be replaced is not known efficiency values may be taken from Table 4a or 4b of SAP 2005 Replacement involving fuel or energy switch If the new heating appliance uses a different fuel the efficiency of the new service should be multiplied by the ratio of the CO emis
28. and SEDBUK value should include the following words 3 SEDBUK efficiency values can be found in the Government s Standard Assessment Procedure for Energy Rating of Dwellings 2005 edition www bre co uk sap2005 16 Seasonal efficiency SEDBUK xx Case heat emission value yy kW Heat transfer to water at full load zzkW The values are used in the UK Government s Standard Assessment Procedure SAP for the eneroy rating of dwellings The test data from which they have been calculated has been certified by insert name and or identification of Notified body AND b The minimum provisions for gas fired central heating systems should be met with respect to the integral central heating boilers as given in Table 1 rows B E AND c The minimum provisions for boiler interlock zoning and time control and temperature control of the heating and hot water circuits should be met with respect to the integral central heating boilers as given in Table 2 for gas fired central heating systems An acceptable alternative to these is any boiler management system that delivers the specified zoning timing and temperature provisions When gas boilers are installed as a replacement for existing boilers the minimum level of system controls should be provided as described in Table 2 unless they are already installed and fully operational If an individual component of the control system is being replaced in an existing system for example a room th
29. both than 150m should be provided with at least two electrical and warm water space heating zones each having separate on off systems timing controls and and temperature controls e Single storey open plan dwellings in which the living area is greater than 70 of the total floor area sub zoning of temperature control is not appropriate e Thick screed floor heating systems gt 65mm should have facilities for automatic setback of room temperature to a lower level at night or during unoccupied periods 4 Boiler control Warm water floor heating system controls should be wet systems only interlocked with the boiler and stored hot water temperature control to ensure that the boiler does not fire when there is no demand for heat for either space or water heating 55 Table 27 Minimum provisions for floor insulation and minimising distribution losses of vvet and electric underfloor heating systems Floor insulation and design for reducing distribution losses Minimum provision Supplementary information 1 Exposed ground floors 2a intermediate floors vvith heated rooms belovv VVet systems Ground floors on earth or suspended floors in contact with outside air should be insulated to limit downward heat loss to not more than 10VV m resulting from thermal resistance of the applied floor finish ii When heat output is not known but the floor finish is specified the extra amount of system thermal insulati
30. building control body However in such cases it will still be necessary for the work to comply with the requirements and to give a notice to the building control body at the earliest opportunity unless an installer registered under an appropriate CP scheme carries out the work A completion certificate can then be issued in the normal way c Where the work is of a minor nature as detailed in Schedule 2B of the Building Regulations which can be seen on page 14 in ADL1B Again the work must comply with the relevant requirements but need not be notified to building control Section 2 Gas fired space heating and hot vvater systems This section provides guidance on the specification of gas fired space heating and hot vvater systems in dvvellings All gas appliances must be installed by a competent person in accordance with the current issue of the Gas Safety Installation and Use Regulations The installation should follow the manufacturer s instructions and should comply with all other relevant parts of the Building Regulations and for wet systems the VVater Regulations 2 1 Scope of guidance The guidance in this section applies to systems fuelled by natural gas and liquid petroleum gas LPG any requirements specific to either fuel type are identified The following types of gas fired heating systems are addressed VVet central heating systems Range cookers with integral central heating boilers VVarm air heating systems Fixe
31. dwellings should meet all of the following conditions a Electrically driven heat pumps should have a coefficient of performance of not less than 2 0 when operating at the heating system design condition AND b The minimum provisions for supply temperatures and for wet systems radiator efficiency in systems using warm and hot water heat pumps as the heat generator should be met as given in Table 29 row a 58 AND c The minimum provisions for installation should be met as given in Table 29 rovv b for vvarm and hot vvater pumps and as given in Table 30 rovv a for vvarm air pumps AND d VVhere vvarm and hot vvater heat pumps heat pumps are used to meet all or part of the domestic hot vvater load the minimum provisions for hot vvater should be met as given in Table 29 row c AND e The minimum provisions for control of the system should be met as given in Table 29 row d for warm and hot water heat pumps and as given in Table 30 row b for warm air heat pumps Table 29 Minimum provisions for warm and hot water heat pumps ground to water water to water and air to water systems Minimum provision Supplementary information a Supply water temperatures and or efficiency Underfloor heating Supply vvater temperatures to the underfloor heating system should be in the range 30 C to 40 C See section 7 of this guide on underfloor heating Radiators High efficiency radiators with high
32. e lounge e lounge dining room e principal living room that does not include a kitchen area 2 LPG boilers Where the boiler or extended internal flue is in a e lounge e lounge dining room e principal living room that does not include a kitchen area cellar or basement 3 Oil boilers The only positions that ARE to be considered are e a kitchen or a kitchen dining room or e a utility room purpose made boiler room And only where they are on the ground floor or in a basement All other positions are NOT to be considered Table A3 Points for property type and fuel Building type Natural gas LPG Oil Flat 710 660 830 Mid terrace 640 580 790 Others end terrace semi detached or detached 590 520 760 71 L1 ASSESSING WHERE NON CONDENSING BOILERS COMPLY Notice to householder Points for property type and fuel 1 Where Box W has been ticked a non condensing oil boiler may be installed before 01 April 2007 Building type Natural gas LPG Oil 2 Where box X is ticked a like for like replacement boiler is reasonable da Se 3 Where Box Y has been ticked or box Z has been ticked and the assessment score in section 13 a d Mid terrace 640 580 790 exceeds 1000 this document may be used as evidence that installation of a condensing boiler Others end terrace has been assessed as impractical or uneconomic Nevertheless you may choose to exceed semi detached or detach
33. given in Table 23 AND d The minimum provisions for hot water production storage and treatment should be met as in Table 24 row d AND e The minimum provisions for the installation of heat meters should be met as given in Table 24 row e AND f The minimum provisions for commissioning of the system should be met as given in Table 24 row f AND g The minimum provisions for insulation of pipevvork should be met as given in Table 25 48 Minimum provisions for connection of dvvellings to an exisiting CH scheme n order to comply with the requirements of when new or existing dvvellings are connected to an existing CH scheme the following conditions should be met a Where existing CH systems are in need of replacement or improvement a specific study should be carried out to assess the economic and environmental benefits of a range of options including the use of CHP and other low carbon heat sources especially where individual heating systems are being considered as an alternative to continuing vvith the CH system AND b Where boilers will be replaced in existing CH systems the requirements of the Part L Non Domestic Heating Cooling and Ventilation Compliance Guide should be follovved for replacement boilers vvith respect to boller efficiency AND If thermal energy is purchased from an existing district or community heating system an assessment of the carbon intensity of the scheme should be carried out Emis
34. minimum provision for labelling of hot water storage vessels labelling with the following information is also recommended e total net fluid content of secondary volume normally heated by each heat exchanger where present 1 0 litre e the type fluid content maximum pressure and surface area of all heat exchangers 2 Commissioning a A signed and dated commissioning certificate should be completed to confirm the equipment has been correctly installed and to record key safety and operational features b As aminimum the commissioning certificate shall record the following details of the solar system net or aperture area of solar collector minimum ambient temperature without freeze damage to components location and method of controlling overpressure location of the electrical isolating switch type of circulation fluid circulation rate of collector circuit location of device for protection of overheating solar heated water A signed commissioning certificate certifying that the equipment is safe legal and fit for use of its intended purpose should be handed over to the dwelling owner and or user as applicable A separate certificate is required to cover the installation and commissioning of the hot water storage vessels and or appliances within a solar domestic hot water system e Acommissioning engineer should be a competent person who can personally testify by signature and date that the e
35. significant work such as change of solar storage is carried out Where insulation is labelled as complying with the Domestic Heating Compliance Guide it must not exceed the following heat loss values Pipe diameter OD Maximum permissible mm heat loss W m 8mm 7 06 10mm 7 23 12mm 7 35 15mm 7 89 22mm 9 12 28mm 10 07 35mm 11 08 42mm 12 19 54mm 14 12 In assessing the thickness of insulation required to meet the provision standardised conditions should be used in all compliance calculations based in this instance on a horizontal pipe at 60 C in still air at 15 C Further assistance in converting these heat loss limits to levels thickness of insulation for specific thermal conductivities is found in the TIMSA HVAC Guidance for achieving compliance with Part L of the Building Regulations Insulation for pipework in unheated areas Extra provision may need to be made to protect water carrying pipework in unheated areas against freezing Further guidance is available in e BS 5422 2001 Method for specifying thermal insulating materials for pipes tanks vessels ductwork and equipment operating within the temperature range of 40 C to 700 C e BRE Report No 262 Thermal insulation avoiding risks 2002 edition 66 Supplementary information on solar vvater heating Energy Efficiency Best Practice in Housing publication Solar Water Heating Guidance for Installers
36. so controls should be upgraded to the levels defined for new systems Time control Of space and vvater heating Time control of space and vvater heating should be provided by i a full programmer with separate timing to each circuit or two or more separate timers providing timing control to each circuit or programmable room thermostat s to the heating circuit s with separate timing of the hot water circuit No minimum requirement but as far as it is practicable and economic to do so controls should be upgraded to the levels defined for new systems The level of sophistication should generally be appropriate to and compatible with that of the appliance The highest levels are only appropriate to appliances with automatic ignition Temperature control of space heating Separate temperature control of zones within the dwelling should be provided using i room thermostats or programmable room thermostats in all zones or a room thermostat or programmable room thermostat in the main zone and individual radiator controls such as Thermostatic Radiator Valves TRVs on all radiators in the other zones or a combination of i and ii above No minimum requirement but as far as it is practicable and economic to do so controls should be upgraded to the levels defined for new systems Temperature control of domestic hot water e Acylinder thermostat and a zone valve or three port valve
37. space heating and where relevant domestic hot water as set out in Table 5 Table 4 Minimum provisions for efficiency and installation of gas fired vvarm air heating systems Minimum provision Supplementary information Efficiency a Gas fired warm air units should meet the requirements British standards as appropriate to the design of the appliance of BS EN 778 1998 Domestic gas fired BS EN 778 1998 or forced convection air heaters for BSEN 1319 1999 5 space heating not exceeding a net If a gas fired circulator is incorporated in the warm heat input of 70kW without a fan to air unit to provide domestic hot water it should be assist transportation of combustion able to deliver full and part load efficiency at least air and or combustion products equal to that prescribed by BS EN 453 BS EN 1319 1999 Domestic gas fired The manufacturer s declaration of appliance forced convection air heaters for performance and efficiency value space heating with fan assisted should include the following words burners not exceeding a net heat input of 70kW Combined warm air unit and circulator BS EN 483 2000 Gas fired central This product has been assessed against the test heating boilers Type C boilers of methods set out in BS EN 778 1998 or BS EN nominal heat input not exceeding 70kW 1319 1999 deleted as appropriate and BS EN 483 and certified as meeting those minimum requirements by insert name and or identif
38. to control the temperature of stored hot water should be fitted e The use of non electric hot water controllers does not meet this requirement e Where permitted by the manufacturer the cylinder thermostat should be wired to provide a boiler interlock A method of temperature control should be provided to prevent excessive tap water temperatures As far as it is practicable and economic to do so controls should be upgraded to the levels defined for new systems In some circumstances such as thermal stores a zone valve is not appropriate a second pump could be substituted for the zone valve An acceptable alternative o these controls is any boiler management control system that meets the specified zoning timing and temperature and boiler interlock control requirements 44 Supplementary information controls for solid fuel central heating e Boiler interlock provided by a wiring arrangement to prevent the system from operating when there is no demand for heat should only be fitted if recommended by the manufacturer e n some simple batch fed or automatic appliances without heat stores and or without automatic ignition it is not possible to svvitch off the heat output completely hovvever the appliance output can be lovvered to a minimum to reduce fuel consumption n most solid fuel systems the room thermostat will switch off the pump which in turn will cause the boiler to operate at minim
39. to penetrate joists and other structural elements All pipes connected to hot water storage vessels including the vent pipe should be insulated for at least 1m from their points of connection to the cylinder or they should be insulated up to the point where they become concealed e f secondary circulation is used all pipes kept hot by that circulation should be insulated For replacement systems whenever a boiler or hot water storage vessel is replaced in an existing system any pipes in the situations above that are exposed as part of the work or are otherwise accessible should be insulated as recommended in this guide in line with the maximum permissible heat loss indicated in the Supplementary Information column and labelled accordingly or to some lesser standard where practical constraints dictate risks 2002 edition Insulation for pipework in unheated areas Extra provision may need to be made to protect central heating and hot water pipework in unheated areas against freezing Further guidance is available in e BS 5422 2001 Method for specifying thermal insulating materials for pipes tanks vessels ductwork and equipment operating within the temperature range of 40 C to 700 C e BRE Report No 262 Thermal insulation avoiding Where insulation is labelled as complying with the Domestic Heating Compliance Guide it must not exceed the following heat loss levels Pipe diame
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42. use of these more accurate values will also reduce SAP values More details are available on the HETAS website 39 5 3 Central heating systems using certain types of solid fuel appliances This section provides guidance on the specification of fixed solid fuel heating systems for dvvellings The guidance given in this section covers the following types of solid fuel appliances used to deliver primary heating as part of a central heating system Batch fed open fires with high output boilers appliance types D1 D4 in Table 16 Batch fed and automatic feed room heaters and stoves with boilers appliance type F in Table 16 Batch fed cookers with boilers not exceeding 7 5kW appliance types G1 and G2 in Table 16 Batch fed independent boilers and automatic feed anthracite and wood pellet independent boilers appliance types J1 J5 in Table 16 Unless stated otherwise the guidance in this section applies equally to appliances that burn wood wood pellets house coal manufactured smokeless fuels and anthracite Where appropriate it will also be necessary to refer to the sections on community heating underfloor heating solar water heating and micro CHP Terminology and applicability of guidance to different scenarios in new and existing dwellings The guidance in this section applies to the following situations a The specification of central heating systems in new dwellings this situation is referred to in this section as a new sy
43. water volume should be utilised Supply water temperature to the radiators should be in the range 40 C to 55 C Space heating may be sized to meet all or part of the space heating load Secondary heating will be required if the heat pump is sized to meet part of the space heating load Fan coil units Supply water temperature to the fan coil units should be in the range 35 C to 45 C Fan coil units may be utilised for heating only or for winter heating and summer cooling b Installation i The water distribution system should be arranged for reverse return operation to maximise efficiency and ease commissioning and future maintenance ii Pipework not contributing to the space heating should be insulated to prevent heat loss following the guidance in the TIMSA guide iii If summer cooling is provided by the heat pump all water distribution pipework should be insulated to prevent condensation following the guidance in the TIMSA guide External pipework between the dwelling and the ground heat exchanger should be insulated following the guidance in the TIMSA guide v The ground loop water circuit should be protected with an antifreeze solution and inhibitor as recommended by the heat pump manufacturer The internal water distribution circuit should contain an inhibitor and may be protected by an antifreeze solution as recommended by the heat pump manufacturer VI e A pressurised water distribution system
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45. 009 JO Lu q d d sam G O UY ss MOJ UNA 5 5 1 qiosqe JOU 10 D9IJOO 5 Jo AL d d aq 1snui Bale 1894 bulz s 40 2 IO y O 1 MOJ JO LuZ 0 uey Seel ou 10 2 ll02 JO AU q d lnului s d s l S 0 o qenb UB Jo Saye MOJ UNA 54 5 4 Bupu x p nsu o p zis aq pinous siabueyoxe e H SANO O se p zis p nous uu 1s s AEpUO S pue Mewnud ejos e U Ml Q 1e u oul 1e H p By SI ISA U IUA 1032 ll02 y JO 4emod duind ewy yeod Jo Z 10 MOS uey SS 8q pinoys uu 1s s JejOSs y u dund Amguud y amod 1011 62 110 oul nueoulubis JOU SI SUBULOL 18 OS D H D SUO q Pinoys P S oU JO UOEWUOJ y JOQIOSGE y UIYYM JOJSUBI Jey JO ayes y edw JO 121118904 JOYE pino 121 spilos o Sainseaw suu s s 2 uj 10 89d 5 ajeos aul 1isod p o ou se os u sou2o q Pinoys doot Areuuud 1 10 00 u ul pinil SU L 9 ysanbas uodn ajqejreae 9 621 Na Sg 01 UODEOUDUSD uonponn aq p nous Yoda 1s Um ay JO s ido pue Sunuod lz jeway Ajayes sis WE
46. 10 SUOISIAOIG WNWIUIN ZL lqEL 33 syu uu umnb u Ionuoo Joo pue ainyeseduwe pue Buju Buiuoz peyloeds out seou yey WA SAS Ou JUELU BHEUeLU lo Aue si 8 1 o uv Suu 1 s s MAU JO SY JEM joy eut Buruy Un Bune u y o s elsouu u 1 woo ajqewweibod l JO YORS o fonuoo S l saw ayesedas JO OM 1 no YORS o Bulwy ayesedas Uu nje Aq peplAoid pinous Bulyeay 1972m pue EdS Jo 011000 oul Bunp uq pue seds jo lIonuoo WIL suu s s MEU 10 p ulJ p SV AOQE II pue Jo uoneuiquuo2 III JO S UOZ Joo oU Ul SIO eIPeI UE uo SAt L S A EA 40161PpEH 150 Se uons 5 0 100 JOISIDE JENPIAIPU pue uoz urew y u JE SOWJSU WOO ajqewweibod JO 1e sOuu8Uu V H JO S UOZ UE u SYE SOUL U WOO qeuuuueJBoid JO s e1souuju p piAo d pinous Dumping y s uoz JO ojluo2 ag Ipdae Bune u oeds 10nu02 ainyesedwa SLU S S m u 10 p ulJ p SV yeudoldde jou SI onuo nleJ duu 1 Jo Huluoz qns ease JOO 101 eut JO 0 02 UEUL s Bose Hurn v UXlUM l sBuill AAp ue d u do iols lBulS SsI
47. 1InO4I9 YORS o ojluo2 Buluun saw ayesedes JO OM I Bune u p oe d 1 Buraq s H YA 104 juo 3d X suu S s MAU JO SY INDIO YORS o Bulu ayesedas yym J uuuueJBoud 6 A0 pinous Sunp v 1972m pue EdS Jo JOJ UOD uu 4 BM pue 5 JO 10 nu02 OWL Aettog uonpulqulo e Ul se 5 lIsno uelue1sui p onpold sI 104 eut J ou 51 uoz JOY a esedes V s uoz suu s s MOU JO p ulj p SV s uoz Sunp u eds o uonippe ul uoz IA48S 1 BPAM 104 o e1edas e AEU pinous sHuljjamp IN e Bune u BAA yeudoldde jou 51 ojluo2 JO Buiuoz qns Base 4001 IEIOL BY JO 0 UeY H P NB si Pave v YOIUM l sBuljiSAAD uejd uado 15 uoz UO SE olluo2 0 q O1 U0D lml dul pue SulApu yoee s uoz pinom Ul 1S S Duugou eoeds e 104 UOISIAOId Bulyeay adeds om 158 1E YIM D P AO d pinous uu0S r UeU 49 e016 Bare 1001 lqesn 520 E UM 5 a qeuoseas eased yorym Ul paveda s AjUO J jioq ease y pauBlsse s YOIUM JO BUO Joru JUBPUSsdepuU s uoz y 1d ox SUV S S MEU 410 p ulj p SV SUU S S m u JO SV Suu s s 1u uu 2pj d i 40 SUO
48. 4 ue Usel Jo peog usnug 94 Aq eq I 10 902288 Um Ajdwoo 7 sjonpoid suu 1s s 15 1972M 104 Daun Z00Z 999 Leg 10 slu uu uinb i JeaBUeYOXS ye y pue 550 1894 q y UUM lduuoo pjnous S SS A 5 19 eM 10 J9ddo2o p lu A P 15 YA OH 2 uoneuuo ul Sunsix ul suu 1s s 1lu uu 2Oep d 1 410 UOISIAOJG WNWIUIN Bunsix pue m u u suu 1s s M U JO UOHS AOL WNWIUIN b nunuo 6 lqeL 26 Sulpilng quru lu ijduuo2 51 UOHP E1SUL eut o OLGD W04 sn plnous s lle sul 6 24140 J plou snou y 104 ais uo do e buea J LaO woy sn 5 BuluoIssiuuuuo2 p 1J sI6 J 53 140 uolei do 1U L 104 EON SI 1 56 no paleo aq semje pinoys s up ldde Jo Buluolssiuuuuo23 S YOM y JO JUBLUBDUBWLUOD y o qoud lonuo Buipiinq Ainou pinoys yom y BuluoissiuutuoS uosied y 10 ays ay suoenb y Buipiing v 47 Ped souel dwod yo s sodind y 104 yenueuu Jasn su uin1loejnueguu y sasn y o waisKs BE O1S joy 10 pue i jioq y o lil ds a Wa Suononiu sul s ul suononusuli 5
49. 5 15mm 7 89 22mm z 28mm 10 07 35mm 11 08 42mm 12 19 54mm 14 12 In assessing the thickness of insulation required to meet the provision standardised conditions should be used in all compliance calculations based in this instance on a horizontal pipe at 60 C in still air at 15 C Further assistance in converting these heat loss limits to levels thickness of insulation for specific thermal conductivities is found in the TIMSA HVAC Guidance for achieving compliance with Part L of the Building Regulations 4 3 Electric heating systems other than central heating using electric boilers The guidance given in this section covers the following types of fixed electric heating systems e Electric warm air systems e Electric panel heaters Electric storage systems including integrated storage direct systems Portable plug in appliances are not covered by this guide In order to comply with the requirements fixed electric heating systems other than electric boilers in new and existing dwellings should meet the following conditions a Electric warm air systems should meet the minimum requirements for zone control and time and temperature control of the heating system as set out in Table 15 row a 36 b Panel heaters should meet the minimum requirements for local time and temperature control of the heating system as set out in Table 15 rovv b c Storage heaters should meet the minimum requirements f
50. 6 April 2006 Statutory Instrument S 2000 531 The Building Regulations ensure the health safety welfare and convenience of people in and around buildings and reasonable provision for the conservation of fuel and power and access to and use of buildings by providing functional requirements for building design and construction The government department responsible for producing and revising the Building Regulations This second tier document in support of Approved Documents L1A and L1B setting out the minimum provisions for all conventional space heating and hot water systems provided in new dwellings and for work in existing dwellings to comply with the Building Regulations energy efficiency requirements In this document minimum provisions refers to the provisions needed to demonstrate compliance of space heating and hot vvater service systems installed in dvvellings vvith the Building Regulations energy efficiency requirements The commentaries labelled Supplementary information may be useful when interpreting the minimum provisions and in some cases provide links to best practice guidance The Government s Standard Assessment Procedure for Energy Rating of Dwellings 2005 edition Section 1 3 The Building Regulations requirements and the guidance in Approved Documents L1A and L1B The Building Regulations that bear on energy efficiency are repeated for easy reference at the front of both Approved Document L1A
51. Crown unless otherwise stated The contents of this publication may be reproduced free of charge in any format or medium for the purposes of private research and study or for internal circulation within an organisation This is subject to the contents being reproduced accurately and not in a way that implies official status Any publisher wishing to reproduce the content of this publication must not use or replicate the ODPM crest or replicate the official version s style and appearance including the cover design and must not present their publication as being an official publication as this may confuse the public The reproduced material must be acknowledged as Crown Copyright and the title of the publication specified The Office of the Deputy Prime Minister does not accept any responsibility for the accuracy and comprehensiveness of any other versions Any other use of the contents of this publication would require a copyright licence Please apply for a licence by writing to the Office of Public Sector Information Information Policy Team St Clements House 2 16 Colegate Norwich NR3 1BQ Fax 01603 723000 or email HMSOlicensing cabinet office x gsi gov uk Further information can be obtained from www opsi gov uk Contents PAGE Section 1 ntroduction 4 1 1 Hovv to use this guide 5 1 2 Glossary 6 1 3 The Building Regulations requirements and the guidance in Approved Documents L1A and L1B 7 1 4 Replacement of primary heating appliances 8 1
52. Ee s ouB suuno4Jlo IPuond 5Sx 184M BuIUSIJQE S on ayy Aq p lldninuu pinoys eolles Meu y uon5 s pinB stul Jo uon5 s 2y u SE pinous si yooo 404 panosdde y sauf pin jo y jeny s kip e s sn souel dde Buei p uiquuo2 yey sto Bune u 10 Ouere lloq u q Bune ri ay 1 xipu ddy 1e u 10 weajsAs Huey m u y HO enjeA yngq3s 9628 uey ss 10U 1s nb u uo s onpold 1194 uo1las 10 ul pid H pinous u l lH 18 10q 9y p l e1sui 51 Joo UOIPEUIQWOD J 6 s njea yngGa3s Ajddns ospe JI A ssainjoejnueyy 4002 dVS 10 qp 10 ep lQEL si ioq 4 yoo Bueu si lloq uoneuiquuo2o 104 sanjen 1 U20 YUM uolsnjuo5 LUOIL UEL q Aew s njea 1 UMOU anjea yNaags si Aq DIOAP O spom JO woy D NDE ue Ul s n pA you s peoeR dai aq o aduel dde 10 15 5 p ss dx se 98 UY ss 104 q pinous v l lH Joo 0 yNgAIS sepliaoid siainjoesnueyy Su Adua y paveda Bulag S u s pue edu Sulsu puo e q pinous J lioq y e uon npold ul ou eve yoiym Auew SE jjam p llonuo y Jo Adua euose s y ueu 200Z IHdV LJaug 10 uo p lle1sui si jioq 104 Z SE slajiog JSOW u
53. ISIAOJC WNWIUIN UA s uoz Dua veds om seal 16 OI p piAIp pinous Lu0Si 0 dn eae ool lqesn 1530 e UI SBuIllSAG MOOUSIUL JOU s op UOJe SAYL S A PA SOl e1lsouu ul aen HO p yoyms dund pue i lioq v egw joy 10 Huey EdS Jong JO puguu p ou SI 3194 U UM FEU OS D IIA S OJJUOD YAM l O4JUOD pinous suu s s p seq ajog suu 1s s M U 40 SuOISIAO4d WNWIJUIN Bune u seds y oH qul 1onuo ui ls s SW9 SAs Bune u je4 U99 p uj seB Jo o nuo JO SUOISIAOJG WNWIUIN Z QEL 15 Table 3 Minimum provisions for insulation of pipes serving gas fired central heating systems Minimum provision Supplementary information n nevv systems pipes should in the follovving cases be insulated with insulation complying with the requirements of the Domestic Heating Compliance guide in line with the maximum permissible heat loss indicated in the Supplementary Information column and labelled accordingly e Primary circulation pipes for heating and hot water circuits should be insulated wherever they pass outside the heated living space or through voids which communicate with and are ventilated from unheated spaces e Primary circulation pipes for hot water service circuits should be insulated throughout their length subject only to practical constraints imposed by the need
54. JO v xipu ddy UIIUO SI aseqejeq Su l2 JJ3 4 llog oul o0 p nous ul se seoue SLUNIIO euo d ox ul sHul aMp Bunsix ug Aou louJj up ldde ue A u r l ju uidinb m u y Jo euose s al Jo lqe1d 5o5e ynga3S u1 uo youms 10 ni e SULNoAUI JOU slu uueopid ti ynaq4s 98 uey ss 1ou q pinous A u l LH Joao e umuuul N P uoneuuo ul sBuljamp Bunsix ul suu 1s s 1lu uu 2Oep d 1 410 UOISIAOJd WNWIUIN sBuIll AAp Bunsix pue m u u suu 1s s M U 40 UO S AOL WNWIUIN Hulyeoy IEnu 56 yo Buluoissiuuuio2 pue ul s4S 15 104 ul s4AS AQUDIDIJJO lloq 10 SUOISIAOIJG WNWIUIN L QEL 12 Sul Jo Jo 971 BU o si lioq uolguiquuo2 INDIO JO EM 104 BU pue sij 1 e u JOYEM O JEAN D y 4291 O BPEW Bq pinous SUOISIAOJd uoliu sued 002 sp 82x ss upiey SUIELU y D jenpiAIpui 10 slu uu uinb i yelo ds pue sjonpoud 1lu uu1e81 yeuidoldde 104 suononisul UOIEI EJSU SJBINJOSJNUeL d lloq u o 19491 OS E pinous 5 0 8154 0 692S Ul UAI suui 1s s uolirssiuuLuoS pue zed ud o moy uo
55. M 101 ID sp4epue s 451118 S 10 S EUL U 104 SuONEOLN O dS uORE OOSSV SJOINJORJNULI 4 YB H OU JO cet JO g SUOH S Jo UNY ELIANE eut BUReEYIOIOEM MMM sy u uu uimb iu uoneysul y Joe pinous Wei uolmemnp uq g i GE xi soru a Gel yim BulAjdwoo se Apoq Jayjoue Aq paya q II e JO 4100 0 19 eM 94 juawelby Jo pieog 8114 u A0 payeo q pajejnsul au ase S U 1811 1 10 902288 UMA SI 1 s Jo s Ase u plnous s1onpoid suu 1s s Beuols Jop JOY 1 jeuou uey 4 UBIu v Jo snes g Z00Z 999 1S9 Jo slu uu uinb i SBueuox 1e u pue sso 1894 6 S 4O S uonejnsuj suu s s MAU JO sy ou lduuoo pinous S SS A E 01S JayeM JOY 4 ddO2 p lu A P YA 10H 2 uoneuuo ul suu 1s s 1lu uu 2Oep d 1 410 UOISIAOJd WNWIUIN Sbuutawup Sunsix ul Bunsix pue m u u suu 1s s M U JO UOLS AOL WNWIUIN b nunuo lqeL 13 uu4do s u juo y pue p JOUNOD pue l Aq yey AR lOD up doun3 e se p 1 S16 1 s y euiyou g 1no e pue Bulp4o A yooq p nosdde y pue
56. Onuo2 n1eJ duu 81 pue Duun ayesedas SulAcu yoes s uoz Bune u 85eds om 1589 ye YUM oq pinous AU06L UELL 491e 1B6 1001 lqesn Ie1o1 E YIM SBuIllSAAG eae 84 peuBisse s JO uo l1u pu d pui s uoz Bune u EdS OM 1589 16 PAPIAIP PINOYS zWOG 0 dn ease 1004 lqesn je 0 E YM 5 Buluoz ep zL lqeL 34 Table 13 Minimum provisions for hot vvater storage for electric vvet central heating systems Minimum provision for nevv systems and replacement systems Supplementary information Vented systems including cylinders heated primarily by electricity 1 2 Vented hot vvater storage vessels should comply with BS 1566 or BS 3198 Vented cylinders in materials other than copper should also be labelled as compiying vvith the heat loss requirements of BS1566 Electrically heated combination units should be insulated such that the heat loss does not exceed the value given by the formula 1 6 x 0 2 0 051V kWh per 24 hours where V is the nominal cylinder capacity in litres Unvented systems including cylinders heated primarily by electricity Products should either comply with BS7206 or be certified by the British Board of Agr ment Water Research Council or other accredited body complying with Building Regulatio
57. The systems within the dwellings should be demonstrated to the resident and suitable information provided on the operation of the controls Where the central heat source includes a low carbon heat source the control system should be proven by demonstrating that the low carbon heat source will normally act as the lead heat source 52 Table 25 Minimum provision for insulation of pipes for community heating systems vvithin dvvellings and distribution pipevvork outside the dvvelling Minimum provision Supplementary information n nev systems pipes should in the follovving cases be insulated in accordance vvith the recommendations in this guide in line vvith the maximum permissible heat loss indicated in the Supplementary Information column and labelled accordingly e Primary circulation pipes for heating and hot water circuits should be insulated wherever they pass outside the heated living space or through voids which communicate with and are ventilated from unheated spaces Primary circulation pipes for domestic hot water circuits should be insulated throughout their length subject only to practical constraints imposed by the need to penetrate joists and other structural elements All pipes connected to hot water storage vessels including the vent pipe should be insulated for at least 1m from their points of connection to the cylinder or they should be insulated up to the point where they become concealed If
58. UU jduuoo Allu pu d puli pinous 54010 02 4o llo ejos e H x pu ddy 2002 4 9 ul p polpul S10 924 y o Bulp4oooe Pale 10 99 09 y UIZIS u ym apew aq pinoys sueunop d JO SSO ay 104 ue u y MS pue JS ueemjeq buey sJOOJI guuou l pue ulnumndo y O UBLEA 1UPOLIU IS JO Bulpeys neay 40 AUSOUIU IS JO S SB Ul JO qepioApun SI SIU aile lQISSO I A H U A SUOREOO pepeysun ul p s Pinoys Sio15 Jio32 pjoS UOISIAOJ1d ON 40 Asequ ul qddns UOISIAO4d Bune u 19 eM 5 10 SUOISIAOIG WNWIUIN L lqEL 63 lq ssod JaNesaymM p z pisuo pjnoys ss A e6e10 s yeay aid ayesedas e ey 15 SI p duund u do YM sasoj s PUL U p ulquuo ulu Ayejnoipled uojeoynens JO YOR PU s uo S 1042M JOY s wop p e y Jeu p dx ay 591015 sejos AjUO JOY uey Jeu 18 aJe ad0 u jO JI A 5141 9104S fEUL UV ue y m uonoun uo2 u p sn q o SI Wass 1 BAA JOY HS UIOD EJOS P H PUUS 51 JBABYIIYM ease JEQUOSge JO se p
59. Ul SIOyeIPeI 2 UO SAHL S A BA JOJeIPeY 018180 Bier 5 eee i SE YONS S 01 UO9 JOyeIPeI enpiAIpu pue BUOZ urew y u 1E SOUL U WOO qeuuuueuBoid JO Je soway WOO I Bune u H UN pue p oeld 1 Bulaq si s pull49 Jeu JO S UOZ e u S eE SOWJ9Y WOOL JO sle1lsouusu WOO oeds Jo omuo5S you y juo alain 54 5 5 4 104 Buisn q pinovs y UIY IM S uoz Jo ojluoo s uoz Sune u 5eds JO p nb AjUO s jojluo2 uul lloq UOIYEUIQUUOD e yym se YONs AjsnosuejUe sU 51 1972m 104 24 AOQE Al pue II JO UODSUIOUIOOE A JO N9110 YORS 0 Seu M JO S1E SOULM U Woo il JO uueuo ninuu abuis e 104 JO 164 uoz ldninui pue Sune u oeds uloq JO ojlluo2 Buru q p A luoe Buis e ney lqe1d o2oe si SE SIY Ul q ued s uoz Bune u oeds ed s y Bulu Lu0S Uey Ja eE01H Bore JOO apen e 0 E S U H MD 104 14959 0 JOU 51 HO 1972M JOY y 104 olluoo 10 eut JO Buruy s n Buie u y o s e1 jsouu u WOO 11 aul ayesedes pue uu s s Ju uu 2op d J e u JO
60. able 8 The appliance manufacturer s declaration of appliance performance shall include the follovving vvords The efficiency of this appliance has been measured as specified in insert appropriate entry from Table 8 and the result is x The gross calorific value of the fuel has been used for this efficiency calculation The test data from which it has been calculated has been certified by insert name and or identification of Notified Body The efficiency value may be used in the UK Government s Standard Assessment Procedure SAP for energy rating of dwellings AND b The efficiency gross calorific value of the appliance should be no less than the value in Table 8 for that type of appliance Table 8 Minimum appliance efficiencies for gas fires used with back boilers British Standard designation appliance type Minimum efficiency gross calorific value Natural gas LPG Inset live fuel effect 40 41 BS 7977 2 2003 Specification for safety and rational use of energy of domestic gas appliances Combined appliances Gas fire back boiler All types except inset live fuel effect 63 64 BS 7977 2 2003 Specification for safety and rational use of energy of domestic gas appliances Combined appliances Gas fire back boiler Supplementary information further guidance on gas fired heating Further guidance on gas fired heating systems is available in the following publications Energy Efficiency Best Practice in Hous
61. al usable floor area up to 150m should be divided into at least two space heating zones with independent timing controls one of which is assigned to the living area e New dwellings with a total usable floor area greater than 150m should be provided with at least two space heating zones each having separate timing and temperature controls Timing of the separate space heating zones can be achieved by i multiple heating zone programmers or ii a single multi channel programmer or iii programmable room thermostats or iv separate timers to each circuit or v a combination of iii and iv above The provisions for zoning for replacement systems in existing dwellings should be as for new dwellings where practical iii Independent time control of both the heating and hot water circuits v Pumped primary circulation to the hot water cylinder v Independent control of hot water production Independent control of the hot water circuit should be achieved by means of a cylinder thermostat and a timing device wired such that when there is no demand for hot water both the pump and circulator are switched off vi Time control Time control should be provided by use of e a full programmer with separate timing to each circuit or e two or more separate timers providing timing control to each circuit or programmable room thermostat s to the heating circuit s with separate timing of the hot water or ati
62. at loss limits to levels thickness of insulation for specific thermal conductivities is found in the TIMSA HVAC Guidance for achieving compliance with Part L of the Building Regulations 45 5 4 Solid fuel appliances for secondary heating n order to comply with the requirements of Part L solid fuel appliances in new and existing dvvellings which are provided for secondary heating and are not part of a central heating system should have a minimum efficiency gross calorific value no less than specified in Table 16 for that category of appliance Supplementary information solid fuel appliances providing secondary heating Minimum efficiencies The minimum efficiencies for solid fuel appliances are published by HETAS in the Official Guide to Approved Solid Fuel Products and Services and on the website www HETAS co uk HETAS also certify and publish actual appliance efficiencies follovving type testing in a notified laboratory to a harmonised European Standard to enable an installer specifier to meet these regulations Appliance types Appliances vvhich are most suitable for secondary space heating are summarised in the table belovv Appliance type Notes a Open fire with high output boiler when used vvith link up b Small solid fuel room These can be a dedicated wood burner or burn logs in a multi fuel appliance or heaters stoves use pellets They can be matched with a main heating system fired by the sa
63. ating Cooling and b Where instantaneous plate heat exchangers Ventilation Compliance Guide are used to produce hot water in individual dwellings the return temperature selected should be less than 40 C c Where hot water cylinders are used the coil size should be such as to require a flow rate that results in a nominal return temperature of less than 40 C while meeting the required heat up time d Where hot water is produced centrally e g in each block of dwellings return temperatures lower than 40 C should be achieved 2 Controlling the Controls for boilers should be in e Setting occupation times is not generally sequencing and accordance with the requirements possible for a group of dwellings and so firing of boilers of the Non Domestic Heating optimum start controls are not a requirement Cooling and Ventilation Compliance Guide except for optimum start controls which are not required 3 Minimising For new CH systems the design l Pumping energy can be minimised by optimising energy used temperature difference for the operating temperatures and pipe sizes to reduce by pumps CH primary circuit should be installed pump power greater than 20 C e To take full advantage of variable volume systems e Variable volume control systems variable speed pumps should be installed and should be used to reduce the controlled to deliver the required pressure volume of water and the pressure difference to suit the load differenc
64. ating pipes in a solar primary system as given in Table 33 should be met 62 I SS A 1e u d y LUOU p ljsi es Ape uj s eunyesedwe 5le u1 J poppe 51 yeay OU ey YONS lqissod aiayM pa josjUOO p nous eoueljdde si u y uu 1s s ejos e Aq si a2upudde Bulyeay 1942M 10 Sl1s uuop e IIUM A saunssoid pue Mewd A SS X JO sjoaye SM ADE y 1sureBe anodes Bulag uu 1s s Je OS 1lu 1siSuo2 olluo2 JO sue uu L piAO4d Al SI ayem p TP U ld ejos p sn zou s 5921 05 yeay Avelixne Aq p npold seyem 1ou yey ansue ll seounos e y Z eilxne JO pjoo S4012 llO2 Jejos Wo BulyeulBu0 Jos UV 1S S 1972M JOY Onls uuop Jejos ay Aq B18u Paso s JO sso IEIUSDIOOg y SSILWIUIW H DE401S Pa edIpPEp s uu 1s s au O U sio12 j lo2 Jejos v ure6 5 v esiwWIXeW 71 1onuoo 0 Dau q pinous 5 0 1402 l s S Jop JOY Ons uuop IJS ul sAs s ounos jeay uei xne 104 p sn siabueyoxe Jeay O p zeduuo se sainjesadwia MOM pue sajel MOL JO QIIIQEL PA u Aq p pollduloo Lae 1 quosqe JOU 1012 llO2 JejOS JO zW Jad papiAojd 1snuu SI Z DUBUOX Jeay Je OS P ul 1 1 ease 189 JO z L O ULY ss OU 1049984
65. available for certain designs and reduces energy usage at times of low demand allowing boiler interlock e Some boilers have both auto ignition and fire extinguishing features Link up systems It is possible to connect together two or more heating appliances with boilers at least one of which can be solid fuel fired to maximise flexibility and efficiency For example an oil or gas boiler could be combined with a wood burning stove with boiler sited in the living room This combination with wood burning appliances will reduce overall carbon emissions Both systems should be designed to appropriate installation codes 41 soebeyoed pue sjiun 5 1 B A JOY 104 1182111000 0661 9022 58 s sod nd ns ulop 40 S lun UOHPUIQUIO E 10 S 1 B A JOY 4 ddo 104 uoljeoyinedS LE6L 86LE eg spoyjew 1S pue sju wanb y si pul o A4 ddo2 u do s sod nd ns ulop 10 S pul 2 15 JIpu s ddoo ZOO 99S eg sp4epue1S ysiug LU PLAN OO es Buljeaysajem MMM S O1S 1 104 UOHP N O S oSupuuorscj UOHEIOOSSV siainjoesnueyy H B H pajejnsul J A ase s u 72y Jupluoduul AIBA si 1 saunjesadwa afpio1s Ipuuuou uey Jeu y 10 sne g ajes P 18 D lOHUO aq SI AINJEIBALW9 J9 JNO 18 JOY 3I s uuoGt uue s s 5 P uuouJ S40 29y uolsi uuuu 29Ul298J B A uol 5 8 oud 1801 qissod pue au JOY ainssa d
66. been converted from another fuel for example from solid fuel to oil In order to comply with the Building Regulations energy efficiency requirements oil fired vaporising appliances in new and existing dwellings should have the minimum provision of controls as given in Table 11a Table 11a Minimum provision of controls for continually burning oil fired vaporising appliances Appliance type Minimum provision Supplementary information Manually operated appliance e g The integral manual controls as Information about the use of room heater provided by appliance manufacturer controls should be clearly stated in the manufacturer s literature Electrically operated modulating The integral and or remote thermostatic appliance e g room heater controls as provided or specified by the appliance manufacturer Automatic ON OFF vaporising appliances a Room heater providing The integral thermostatic controls secondary room space heating as provided by appliance manufacturer b Room heater providing The integral and or remote thermostatic domestic hot water and Secondary controls as provided or specified room space heating by the appliance manufacturer 5 SEDBUK efficiency values can be found in the Government s Standard Assessment Procedure for Energy Rating of Dwellings 2005 edition www bre co uk sap2005 30 3 5 Oil fired fixed independent space heating appliances This section provides guidan
67. ce on the specification of oil fired fixed independent space heating appliances for dvvellings Fixed independent space heating appliances may be installed as a means of primary or secondary space heating Oil fired fixed independent appliances for primary heating n order to comply with Part L oil fired fixed independent space heating appliances in new dvvellings vvhich are provided as the primary heat source should meet the follovving conditions a The efficiency of the appliance gross calorific value should be no less than 6096 The appliance manufacturer s declaration of appliance performance shall include the follovving vvords The net efficiency of this appliance has been measured and the result is x The test data from which it has been calculated has been certified by insert name and or identification of Notified Body The efficiency value when converted to gross by use of the appropriate conversion factor from Table E3 in SAP 2005 may be used b Each appliance should be capable either independently or in coniunction vvith room thermostats or other suitable temperature sensing devices of controlling the temperatures independently in areas that have different heating needs e g separate sleeping and living areas Oil fired fixed independent appliances for secondary heating n order to comply with the Building Regulations energy efficiency requirements oil fired fixed independent space heating appliances in new dwelli
68. d independent space heating devices Where appropriate it may be necessary to refer to other sections in this guide covering community heating underfloor heating heat pumps solar vvater heating and micro CHP 2 2 Gas fired vvet central heating systems This section provides guidance on the specification of gas fired vvet central heating systems for dvvellings that if followed will satisfy the energy efficiency requirements of the Building Regulations Terminolooy and applicability of guidance to different scenarios in nevv and existing dvvellings The guidance in this section applies to the following situations a The specification of central heating systems in new dwellings this situation is referred to in this section as a new system b The specification of central heating systems in existing dvvellings where previously space heating was not provided by central heating this situation is also referred to in this section as a nevv system c The specification of a replacement central heating system and or component in existing dvvellings where central heating is already installed this situation is referred to in this section as a replacement system In situations a and b above the guidance for compliance of new systems in new and existing dvvellings vvith Part L is the same n situation c above that is for replacement systems in existing dvvellings in most cases the guidance for compliance vvith Part L is as f
69. e relevant column in Table 12 of SAP 2005 is the one entitled Emissions kg CO kWh 8 Section 1 5 Notification of building vvork The requirement L1 in the 2006 edition of Part L applies to all work covered either by the energy efficiency requirements Such vvork has to comply by making reasonable provision to achieve energy efficiency In most instances this will require the building control body to be notified of the intended work before the work commences either in the form of a deposit of full plans or by a building notice The execution of the work is then subject to checking and inspections by the building control body vvith a completion certificate being issued on satisfactory completion of the vvork n certain situations other procedures apply These include a Where the work is being carried out under the terms of an authorised Competent Persons self certification CP scheme no advance notification to the building control body is needed At the completion of the work the registered CP provides the building owner with a certificate confirming that the installation has been carried out in accordance with the requirements of the relevant regulations and the scheme operator notifies the local authority to that effect b Where the work involves an emergency repair e g a failed boiler or a leaking hot water cylinder In such cases there is no need to delay making the repair in order to make an advance notification to the
70. e required from the pumps e Further guidance is provided in BSRIA Application under part load Guide AG 16 2002 Variable flow Water Systems Design Installation and Commissioning Guidance 49 Table 22 Minimum provisions for design of lovv carbon heat sources vvhere these are included in community heating systems Minimum provision Supplementary information 1 Low carbon heat sources No minimum requirement but see supplementary information CH systems can be designed to use low carbon heat sources to meet all or part of the heat demand which may enable some relaxation of the U values that would otherwise be required subject to the limits of design stated in ADL1A 2 Biofuels No minimum requirement but see supplementary information a Biofuels can be used to provide heat from boller systems or as a fuel for CHP systems b Consideration should be given to operation and maintenance of the plant to ensure a long life and to prevent a later replacement by a conventional fuel system c Where a biofuel boiler is to be used in conjunction with conventional heating bollers or electric heating a reasonable minimum proportion of the annual heat supply from biofuels vvould be 4596 of the annual heat demand space hot vvater service and process heating Further guidance is provided in Strategic Guide to Renewable and Decentralised Systems ODPM 2005 3 Combined heat and power CHP Where CHP is u
71. eainseew SI 10 29 02 2002 dvs Aq peuyep se DA puew p EM jou Ajrep au JO 08 1589 18 o JUDJeAINb si YoIUM Apoedeo yeay 1lu peAInb JO uun oA e aq pinoys SA Aan DEL H Peale 10 99 09 EJOS au JO uu u Jad Ajloedeo yeay lu eAInb 10 sam GZ 1se ye a pinous SA aUNIOA apos JejOSs peyeoIpep y 1 SMO O se Palloeds aq Pinoys ease 10 2 llo2 0 SLUNJOA 15 D TP U 5 Jo 01721 SUL 19 eM o1d 1p os a6e10 g D pejejnsul au ase S U 1811 JUeLIOCUI H A SI 1 s Jo s u Seinjesadua abelojs Jpuulou uey v o ng 99 1 Sg JO slu uu uImnb u JeBueyoxe e y pue SSO 1891 V ym Sul duuo se uon onasuo 4 ddo ou ase YoIyM 5 uu u32s o uoo q lenb u jeAmb ue oi SOUS JO STUEIS p v sib l MILL SG e se yons onpo d y uo Buljjeqe 4eajo Aueo pinoys sapujo JOY 4addoo S O1S EUL U 40 SUOI eoIo9ds soueWWOJJEd uollgioossv SJeuNjOejnue 2U JO cet JO t SUOHO S Jo slu uu uinb i UO EINSU y jaa pinous suu 1s s apos Mewlidg 23 Bu jduuo32 se Apog papae eyjoue Aq Dote q Jo iounoo YOIeasEy 1972M v lu uu J6v Jo pieog usnug v Aq Della eq 10 9022 58 UMA Iduuoo
72. ed 590 520 760 the Building regulations requirement if a suitable installation option can be found Condensing boilers are more efficient and therefore save on fuel costs and cause less harm to the environment You may be eligible for a grant that defrays some of the additional costs contact your local energy efficiency advice centre or the energy efficiency helpline of your gas or electricity supplier phone number on back of bill 4 You should retain this form It may be required when you sell your home 72 Published by NBS part of RIBA Enterprises Ltd and available from RIBA Bookshops Mail Order 15 Bonhill Street London EC2P 2EA Telephone orders General enquiries 020 7256 7222 Fax orders 020 7374 2737 Email orders sales ribabookshops com Or order online at VVVVVV thebulldingregs com RIBA Bookshops 66 Portland Place London W1B 1AD Telephone 020 7256 7222 113 115 Portland Street Manchester M1 6DVV Telephone 0161 236 7691 Birmingham amp Midland Institute Margaret Street Birmingham B3 3SP Telephone 0121 233 2321 RSUA 2 Mount Charles Belfast BT7 1NZ Telephone 028 9032 3760 Renevv Rooms 82 VVood Street Liverpool L1 4DQ Telephone 0151 707 4380 SBN 10 1 85946 225 1 SBN 13 978 1 85946 225 6 Stock code 57645 Crown copyright 2006 n The Approved Documents are published by NBS for the Office of the Deputy Prime Minister This publication has been approved by Ministers a
73. ed wood processed on site Some appliances can only burn a single type of fuel while others may be able to burn a range of types The multi fuel category in Table 17 allows for the latter group basing its CO emissions on a typical blend of fuels used in that case Smoke control areas Within local authority smoke control areas only anthracite or other authorised smokeless fuels may be used unless the property is fitted with an exempted appliance An exempted appliance is one that has been approved by Parliamentary Statutory Instrument for installation in smoke control areas and prospective purchasers should check that the appliance and intended fuel are permitted A list of currently authorised fuels and exempted appliances is given on the website www uksmokecontrolareas co uk Outside a smoke control area house coal or wood can be burnt on non exempted appliances Wood should always be seasoned to a moisture content not exceeding 20 to ensure maximum performance and limit the occurrence of condensation and deposits in the chimney system All solid fuel appliances require appropriate soot fire resistant chimneys discharging at high level locations defined within Approved Document J ADJ Details of HETAS approved chimney products independently tested and approved to accepted standards can be found on the HETAS website The natural ventilation rates of these chimneys may be less than the default values listed within SAP2005 the
74. em preparation and water treatment given in Table 12 row b should be met AND c The system should be commissioned in accordance with the minimum provisions given in Table 12 row c AND d The minimum provisions for boiler interlock zoning and time control and temperature control of the heating and hot water circuits as given in Table 12 row d should be met An acceptable alternative is any boiler management control system that meets the specified temperature timing zoning and if applicable boiler interlock control provisions When electric boilers are installed as a replacement for existing boilers the minimum level of system controls should be installed as described in Table 12 unless they are already installed and fully operational If an individual component of the control system is being replaced in an existing system for example a room thermostat it is not necessary to upgrade the system to meet the minimum provisions AND e The minimum provisions for hot water storage systems and labelling of storage vessels as given in Table 13 should be met AND f Pipework should be insulated in accordance with the minimum provisions described in Table 14 32 mmm sq A VINOWL 94 uo pue ainera sdaunjoejnueul ul puno ueo SLU S S ONUO uo sjlejap SION suu 1 s s MEU 10 SV P AOL jou SAYL SOEN Jo eIpeti S9
75. encies The minimum efficiencies for solid fuel appliances are published by the Heating Equipment Testing and Approval Scheme HETAS in the Official Guide to Approved Solid Fuel Products and Services and on the website www HETAS co uk Individual manufacturer s efficiency figures may be higher than those indicated and should be used where independently certified against the harmonised European Standards now in place Carbon emission factors Solid fuels include vvood in various forms different types of coal and manufactured solid fuels and consequently there is a range of associated CO emission factors These factors are as important as appliance efficiency when selecting a boiler Table 17 shows the CO emission factors for generic types of solid fuel recognised in SAP Table 17 CO emission factors for generic types of solid fuel Solid fuel CO emission Notes kg CO kWh House coal 0 291 Traditional British coal It burns with smoky flame Anthracite 0 317 A mineral fuel with high carbon content Burns very cleanly Manufactured smokeless fuel 0 392 Mineral fuel usually made from anthracite Wood logs 0 025 Renewable wood logs either purchased or from own land Wood pellets in bags 0 025 Mechanically compressed sawdust Bulk wood pellets 0 025 As above delivered in bulk Multi fuel 0 187 A UK typical blend of logs and mineral fuel as burnt by a typical householder on a multi fuel stove Wood chips 0 025 Chipp
76. ermostat it is not necessary to upgrade the system to meet the minimum requirements AND d Pipework should be insulated as described in Table 3 2 4 Gas fired warm air heating This section provides guidance on the specification of gas fired warm air heating systems for dwellings Terminology and applicability of guidance to different scenarios in new and existing dwellings The guidance in this section applies to the following situations a The specification of gas fired warm air heating systems in new dwellings this situation is referred to in this section as a new system b The specification of gas fired warm air heating systems in existing dwellings where previously space heating was not provided by a warm air system this situation is also referred to in this section as a new system c The specification of a replacement warm air heating system and or component in existing dwellings where warm air heating is already installed this situation is referred to in this section as a replacement system In order to comply with the requirements of the Building Regulations energy efficiency requirements gas fired warm air heating which is provided as a new system or replacement system in new or existing dwellings should meet the following conditions a The system should meet the provisions for efficiency and installation set out in Table 4 AND b The system should be zoned and incorporate the timing and temperature controls for
77. ert name and or identification of notified body AND c The minimum provisions for oil fired central heating systems should be met with respect to the integral central heating boilers as given in Table 9 rows b to e AND d The minimum provisions for boiler interlock zoning and time control and temperature control of the heating and hot water circuits should be met with respect to the integral central heating boilers as given in Table 10 for oil fired central heating systems An acceptable alternative to these is any boiler management system that delivers the specified zoning timing and temperature provisions When oil boilers are installed as a replacement for existing boilers the minimum level of system controls should be provided as described in Table 10 unless they are already installed and fully operational If an individual component of the control system is being replaced in an existing system for example a room thermostat it is not necessary to upgrade the system to meet the minimum requirements AND e Pipework should be insulated as described in Table 11 3 4 Continually burning oil fired vaporising appliances providing secondary heating or hot water This section provides guidance on the specification of oil fired vaporising appliances providing heating or hot water for dwellings that if followed will satisfy the Building Regulations energy efficiency requirements The guidance does not apply to appliances which have
78. facturers Association performance specification for thermal stores Labelling All hot water storage vessels should carry a label with the following information type of vessel nominal capacity in litres standing heat loss in kWh day heat exchanger performance in kW Water Heater Manufacturers Association Performance Specification for Thermal Stores www waterheating fsnet co uk wma htm Insulation of primary stores Due to the higher than normal storage temperatures in primary stores it is very important that these are well insulated 35 Table 14 Minimum provisions for insulation of pipes serving central heating systems with electric boilers Minimum provision Supplementary information n nev systems pipes should in the follovving cases be insulated with insulation complying with the requirements of this guide in line vvith the maximum permissible heat loss indicated in the Supplementary nformation column and labelled accordingly e Primary circulation pipes for heating and hot water circuits should be insulated wherever they pass outside the heated living space or through voids which communicate with and are ventilated from unheated spaces e Primary circulation pipes for domestic hot water circuits should be insulated throughout their length subject only to practical constraints imposed by the need to penetrate joists and other structural elements e All pipes connected to hot water storage
79. fication of electric boilers serving wet central heating systems for dwellings Terminology and applicability of guidance to different scenarios in new and existing dwellings The guidance in this section applies to the following situations a The specification of central heating systems in new dwellings this situation is referred to in this section as a new system b The specification of central heating systems in existing dwellings where previously space heating was not provided by central heating this situation is also referred to in this section as a new system c The specification of a replacement central heating system and or component in existing dwellings where central heating is already installed this situation is referred to in this section as a replacement system In situations a and b above the guidance for compliance of new systems in new and existing dwellings with Part L is the same In situation c above that is for replacement systems in existing dwellings in most cases the guidance for compliance with Part L is as for new systems unless otherwise stated in the relevant section In order to comply with the requirements electric boilers serving central heating which is provided as anew system or replacement system in dwellings should meet all of the following conditions a The minimum provisions for system circulation given in Table 12 row a should be met AND b The minimum provisions for syst
80. fired fixed independent appliances for secondary space heating n order to comply with the requirements of Part L gas fired fixed independent space heating appliances vvhich are provided as the secondary heat source in nevv or existing dvvellings should meet both of the follovving conditions a The appliance should be one of the types described in Table 7 AND b The efficiency gross calorific value of the appliance should be no less than the value in Table 7 for that type of appliance The appliance manufacturer s declaration of appliance performance shall include the following words The efficiency of this appliance has been measured as specified in insert appropriate entry from Table 7 and the result is x The gross calorific value of the fuel has been used for this efficiency calculation The test data from which it has been calculated has been certified by insert name and or identification of Notified Body The efficiency value may be used in the UK Government s Standard Assessment Procedure SAP for energy rating of dwellings 20 Table 7 Acceptable appliance types and minimum appliance efficiencies for independent fixed natural gas and LPG gas fired space heaters used as a secondary heat source British Standard designation appliance type Minimum efficiency gross calorific value Gas LPG BS EN 1266 2002 Independent gas fired convection heaters incorporating 72 73 a fan to assist transportation of comb
81. gs in most cases the guidance for compliance with Part L is as for new systems unless otherwise stated in the relevant section In order to comply with the requirements of Part L oil fired central heating systems which are provided as new systems or replacement systems in dwellings should meet all of the following conditions a The boiler should have a minimum efficiency as defined by its SEDBUK value as given in Table 9 row a AND b The minimum provisions for system circulation as given in Table 9 row b need to be met AND c The minimum provisions for hot water storage and labelling of storage vessels as given in Table 9 row c need to be met 23 AND d The minimum provisions for system preparation and vvater treatment as given in Table 9 rovv d should be met AND e The system should be commissioned in accordance vvith the minimum provisions given in Table 9 row e AND f The minimum provisions for boiler interlock zoning and time control and temperature control of the heating and hot water circuits as described in Table 10 should be met An acceptable alternative to these is any boiler management system that delivers the specified zoning timing and temperature and boiler interlock control provisions When oil boilers are installed as part of a replacement system the minimum level of system controls should be provided as described in Table 10 unless they are already installed and fully operational If an
82. i e souusu JO aen a HO p uo1liAs ap dund pue i ioq ay Udy eludoidde aal S1InO4I9 JAYEM 104 10 Bulyeay XEds y ayy WO 189 JO 20 ou 51 3194 U UM YEU OS ae S OJ1uo2 U IuA Ul jolluo2 J ioq p nous uu 1s s y MHA s llddns ospe Joo au 4 yooH ul J llog Zp lIonuo5S suompuo Sune u aoeds uo Buipu d p AMewnd y o 1ndul SWIA SAS MAU JO sy ay ajqedeo pue onuoo emgeet MO UNA De eq pinoys Joo Su L LD slonuoo p suu 1 s s Ae 10 SV ais Jaen seunjoe nuew y sn y o uoneu do eu pue uu 1s s y JO uoneuejdxe ini e auf Pinoys 18 1 oul q Sue l duuo2 MOUS p ldulo pjnoys p109 1 Buluoissiuuuuo2 E pue p Aolloj pinous Buluoissiuuuuo2 10 840110 18 e BultuossitutuoO o suu s s MEU 10 p ulJ p SV peduund D M AUO aq p nous 4 1 5 UTAN suu l1s s Buljsixe p eid aie s 4 lloq SLU 1S S MAU JO p ulj p SY Aou r l ul uon np l JUBNHSSUOD y pue l s oul Jo uolle nuuno2e Jo 91 BU o s lloq UOIPEUIQUOD Jo YNI J FEM 104 u PUB S YP U O Jop Daa v 7291
83. iator system is employed similar to that for gas fired central heating systems 6 2 Definition of Community Heating CH A CH system is one that supplies heat to a number of dwellings from a common heat source It may comprise for example a system heating a block of flats or a larger scale system heating many buildings Systems that supply fewer than 15 dwellings from a central boiler system are not covered in this section of the guidance and the guidance given for individual dwelling heating systems should be followed for these applications where appropriate The guidance in this document assumes that the CH distribution system uses hot water as the energy carrier Hot water service systems may be generated centrally within each building or in individual dwellings Minimum provisions for connection of dwellings to a new CH scheme In order to comply with the requirements new CH systems to supply both new and existing dwellings should meet all of the following conditions a The minimum provisions for system design to maximise the efficiency of heat generation and minimise energy use by pumps should be met as given in Table 21 AND b Where the system uses low carbon heat sources e g CHP biofuels or heat pumps the minimum provisions for the lead heat generator should be met as defined in Table 22 AND c Where heating systems are to be installed for new dwellings the minimum provisions for control of the system should be met as
84. ication of Notified Body Warm air unit alone This product has been assessed against the test method set out in BS EN 778 1998 or BS EN 1319 1999 deleted as appropriate and certified as meeting the minimum requirements by insert name and or identification of Notified Body Installation a The system should be installed in accordance with BS 5864 2004 Installation and BS 5864 2004 Ductwork that is newly installed or replaced should be insulated in accordance with the recommendations of BS 5422 2001 maintenance of gas fired ducted air heaters of rated input not exceeding 70kW net second and third family gases Specification BS 5422 2001 Method for specifying thermal insulating materials for pipes tanks vessels ductwork and equipment operating within the temperature range of 40 C to 700 C 18 Table 5 Minimum provision for system controls for gas fired vvarm air heating System Minimum provision VVarm air systems vvithout vvater heating Combined vvarm air and domestic hot vvater systems for installations L Time and Time and temperature control should be provided by either temperature controls external to heater time svvitch programmer and room control thermostat or programmable room thermostat or Controls integrated in the heater time switch programmer and room temperature sensor linked to heater firing and fan speed control ii Zoning e New dwellings with a tot
85. imum provisions and in some cases provide links to best practice guidance They do not specify minimum provisions Figure 2 How to use the Domestic Heating Compliance Guide Section 1 Section 6 Introduction Section 2 Community heating systems Section 1 1 sisi 55 How to use the guide Pages 10 22 Section 7 Section 1 2 Underfloor heating systems Glossary Section 3 Pages 55 57 Section 1 3 Oi systems Pages 23 31 1 Requirements of Section 8 Approved Documents Heat pump systems L1A and L1B Section 4 Pages 58 61 Section 1 4 Electric systems Replacement of Pages 32 37 Section 9 primary heating Solar hot vvater systems appliances Pages 62 67 Section 5 Section 1 5 Solid fuel systems Section 10 Holo oi Pages 38 47 Micro CHP systems building work Page 68 Section 1 2 Glossary Approved Document ADL1A Approved Document 18 ADL1B The Building Regulations Office of the Deputy ODPM Prime Minister Domestic Heating Compliance Guide Minimum provision Supplementary information SAP SAP 2005 Approved Document L1A gives guidance on how to satisfy the Building Regulations energy efficiency requirements when building new dwellings Effective from 6 April 2006 Approved Document L1B gives guidance on how to satisfy the Building Regulations energy efficiency requirements when carrying out work in existing dwellings Effective from
86. individual component of the control system is being replaced in an existing system for example a room thermostat it is not necessary to upgrade the system to meet the minimum requirements AND g Pipework should be insulated as described in Table 11 24 SUO JONAJSU SJBINJOeJNUeW v u p ulo ds did winuwuluiw 40 5149 4 Aue UNA uonounfuoo uolmgj no4i5 Ul p piAoid p nous A PA ssed Qq oewozne ue ssedAq p dund Amt o p Li8Auo2 q pinous uo l n2J 5 E JO UOUSIEISUL S APE SUO ONAJSU 5 1 109 9U J q YHAPID lLu S YM suu l1s s Bullsix povedal peduund n pinous 5 uonmegjno54i5 SIB IOG suu91s s MOU JO SY Aqeuuud 197 m JOY Sl1s uuop pue Sunp u soeds 104 Suu 1s S p uu 1s s q uNW 2OO Du suolssiuua Don 121 S 9002 dVS 10 ZL lQEL u uuinio2 au 5002 sodlnd silu 104 p sn eq osje ued 0602 uuoj Ave JO 21 lQEL Woy UYL q PINOYS soe suond x 24140 8ul sbulljamq 40 2 UOISSILU 2000 2949 siy Bueu e10J9q See 1u uuss ssv UOhP E SU BUISU PUOD y 0 MOU au Ul Deen zey o Deele Buraq soles PIN oU ul INO 195 SAOUO 5141 S X oun u Geen ent y JO 40398 uolssiuu 2000 eut JO si lloq Bune u e nu 2o eJB lui YM 5 Bue1
87. ing publications CE30 Domestic heating by gas boiler systems CE51 Central heating system specifications CHeSS CE54 Whole house boiler sizing method for houses and flats SBGI publications on gas boilers and gas fires under development at the time of writing See www sbgi org uk for updates CORGI publications Essential Gas Safety GID1 Gas Cookers and Ranges GID2 Gas Fires and Space Heaters GID3 Water Heaters GID5 Central Heating wet and dry GID7 Wet Central Heating System Design Guide WCH1 Warm Air Heating System Design Guide VVAH1 Requirements relating to various aspects of the installation of condensing boilers are given in British Standards BS 5440 Parts 1 and 2 BS 5449 and BS 6798 22 Section 3 Oil fired space heating and hot vvater systems This section provides guidance on the specification of oil fired space heating and hot vvater systems in dvvellings to meet the Building Regulations energy efficiency regulations All oil appliances must be installed by a competent person and the installation should follow the manufacturer s instructions and comply with all other relevant parts of the Building Regulations and for vvet systems the VVater Regulations 3 1 Scope of guidance The guidance in this section applies to systems fuelled by oil The follovving types of oil fired heating systems are addressed VVet central heating systems Range cookers with integral central hea
88. ion and outer casing of polyethylene 54 Section 7 Underfloor heating systems This section provides guidance on the specification of underfloor heating systems in dvvellings 7 1 Scope of guidance The guidance in this section covers systems that use hot water as the energy carrier and those that rely on electric heating elements It should be used in conjunction with the guidance on central heating systems in the fuel based sections of this guide on gas fired oil fired solid fuel or electric heating systems In order to comply with the requirements of Part L underfloor heating in new dwellings should meet all of the following conditions a The minimum provisions for control of the system and safe operating temperatures as given in Table 26 should be met AND b The minimum provisions for floor insulation and system design to minimise distribution losses should be met as outlined in Table 27 AND c For electric underfloor heating systems in new dwellings the minimum provisions for construction and controls as set out in Table 28 as applicable to the type of system Table 26 Minimum provisions for control of electric and wet underfloor heating systems Controls Minimum provision Supplementary information 1 System temperature All floor heating systems whether electrical or warm controls electric and water types should be fitted with suitable controls to wet floor heating ensure safe system operating temperatu
89. liance Guide it would be reasonable to install a noncondensing boiler 3 Paragraphs 8 to 10 in the ADL1B give guidance on hovv to deal vvith historic buildings The assessment procedure 4 The assessment should be carried out following the detailed guidance given in the Guide to the condensing boiler installation assessment procedure for dwellings the Guide It should consider all feasible condensing boiler installation options subject to the restrictions given later for whichever fuel has been chosen by the householder natural gas LPG or oil For the purposes of the assessment boiler positions preferred by the householder are not relevant The lowest cost position should be found and recorded on the form 5 An assessment score exceeding 1000 points indicates that exceptional circumstances exist In these circumstances the installation of a condensing boiler is not considered necessary to meet the requirements of the Building Regulations Householders may still choose to install a condensing boiler and they may be eligible for a grant that defrays some of the additional costs 6 The assessment result is restricted to the chosen fuel for the new boiler and is not valid for a different fuel 7 Whether a condensing or non condensing boiler is chosen it need not be installed in the position shown on the assessment form s it difficult to install a condensing boiler in this building
90. located centrally between the rooms being heated thus minimising the length of interconnecting services ii Service pipes should be insulated or routed via conduits to reduce distribution losses where there is a risk of overheating the room or floor finish as a result of the presence of hot water service pipes in transit to more distant rooms and or avoidable energy loss 56 UOB Ul Llojuuo2 pue yES 10 PIOA 100 ywi pue oeds JO4JUOD p nous jenuew YIM sle1sSouu 8u WOO qeuuuueJBoid 6 0 1 00 Il Mos 2 l p uy p SE uonpInsul 5159 UO USIuU JOO 1u eAInb JO 1 e AO Q sepou JO Als vpE Sulpp q li u p e nsdeSu uuuur UeY ss 559 1 JO 4 ienb 10 ss mpuu peyeouqes aid e UM p nous s lqe Sune u 4o lH pun Huljoe 10910 uon n nsuoo sul sAs Bunp uq 100 ln s pun r eae UOB Ul Llojuuo2 pue Ajejes 10 PIOA 100 ywi pue eoeds pinoys ainyee jenuew YM SYE SOUL U WOO s onuoo Z lQEL UUM SOUEDIOOOE u UL AO 100 Aue Jo stella y pue sy
91. logs with correspondingly low B2 and B3 can be fitted net carbon emissions It must be stressed that large open fires with large free face areas see Note 1 usually have ventilation requirements well in excess of that available in a property built to modern standards of air tightness This is likely to lead to severe operational problems unless special steps are taken to provide the required air supply The use of such large simple open fires is penalised in the SAP calculations Note 1 The free face area of an open fire is its open width times open height see Approved Document J for further details 46 Controls for solid fuel appliances providing secondary heating V herever possible solid fuel appliances should have thermostatic control these are usually integral to appliances in categories E F and G Controls should be appropriate to the level of sophistication of the appliance automatic appliances can benefit from advanced controls Provision of fuel storage for solid fuel appliances providing secondary heating The quantity of fuel consumed by secondary heating appliances is likely to be less than 1 tonne per year Hovvever it should be stored in a dry and convenient location Smoke control areas The location of the appliance vvithin or vvithout a smoke control area is critical to he process of optimising the choice of appliance and fuel For further information on solid fuel appliances see Energy Efficiency Best
92. lude a Good Practice Guide specifying the minimum standards for installation and control of micro CHP publicly available specification PAS 67 Laboratory test to determine heating and electrical performance of heat led micro cogeneration packages primarily intended for heating dvvellings e method to evaluate the energy performance of micro cogeneration heat led systems in dwellings e Appendix N of the UK Government s Standard Assessment Procedure SAP 2005 for the energy rating of dwellings Until this guidance is available the following publication may be useful Low or Zero Carbon Energy Sources Strategic Guide NBS 2006 68 Appendix A Assessing the case for a non condensing boiler 1 This Appendix sets out the approved assessment procedure for determining for the purposes of the requirement in Part L of the Building Regulations where practical considerations mean that it would be reasonable to install a non condensing boiler The assessment is applicable where boilers are to be installed in dwellings whose designs were approved before 1 April 2005 2 The chart summarises the steps in the assessment procedure In determining the position within a dwelling where a condensing boiler could be installed at lowest cost obstacles such as furniture or fittings should be ignored If the assessment shows that this cost is too high then in accordance with section 2 or 3 as appropriate of the Domestic Heating Comp
93. me especially vvood fired or a different primary fuel or off peak electricity to reduce carbon emissions especially wood fired with or without thermostatic control Many designs can provide heating during povver cuts Mineral fuel appliances can be chosen but the attention of designers is dravvn to the probable need to supply additional measures as the carbon emission values of these tend to be high Mineral fuel appliances may often have slightly higher efficiencies than their vvood burning counterparts Multi fuel room heaters can enable the user to burn renewable wood as well as an alternative to mineral fuels outside smoke control areas c Small solid fuel stoves The efficiency of these can be higher than for than dry appliances They can be vvith boilers integrated with the primary wet heating system Multi fuel appliances enable the householder to burn renewable wood in smoke control areas d Range cookers Typically appliances which are installed in a living area and are designed to provide some useful heat from their case into the space in which they are located They are available in a variety of shapes and sizes and can incorporate a boiler which can be connected to dual fuel integrated systems e g link up Multi fuel versions are also available Where requested open These do not have thermostatic control of the burning rate and have lower fires HETAS categories B1 efficiencies However they are able to burn wood
94. me switch programmer two channel and room thermostat vii Space heating zoning e New dwellings with a total usable floor area up to 150m should be divided into at least two space heating zones with independent timing controls one of which is assigned to the living area e New dwellings with a total usable floor area greater than 150m should be provided with at least two space heating zones each having separate timing and temperature controls The provisions for zoning for replacement systems in existing dwellings should be as for new dwellings where practical 2 5 Gas fired fixed independent space heating appliances This section provides guidance on the specification of gas fired fixed independent space heating appliances for dwellings Fixed independent space heating appliances may be installed as a means of primary or secondary space heating Gas fired fixed independent appliances for primary space heating In order to comply with the Building Regulations energy efficiency regulations gas fired fixed independent space heating appliances in new and existing dwellings which are provided as the primary heat source should meet the following conditions 19 a The appliance should be one of the types described in Table 6 AND b The efficiency of the appliance gross calorific value should be no less than 5896 The appliance manufacturer s declaration of appliance performance shall include the follovving vvords
95. mpliance calculations based in this instance on a horizontal pipe at 60 C in still air at 15 C Further assistance in converting these heat loss limits to levels thickness of insulation for specific thermal conductivities is found in the TIMSA HVAC Guidance for achieving compliance with Part L of the Building Regulations Insulation of community heating pipework i e distribution pipes outside the dwelling CH pipework should be insulated to the standards defined in EN 253 for pre insulated pipes or to an equivalent performance for conventionally insulated pipes CH pipework typically uses pre insulated buried pipe systems Minimum insulation thicknesses are defined in the EN standards Where pipework is run above ground the pipe insulation performance should be at least as high as that used in the buried part of the system Enhanced insulation standards should be evaluated where CH is supplied only from fossil fuelled boilers or where flow temperatures over 100 C are being used Designing for minimum heat losses from distribution pipework Heat losses can be reduced by optimising operating temperatures in conjunction with the need to minimise pumping energy Variable volume control systems will assist in maintaining low return temperatures While some bypasses may be needed to maintain the system in a hot condition ready to meet the demand these should be controlled to the minimum flow needed The use of temperature controlled by
96. nclude control of vvater pump operation internal and external as appropriate control of vvater temperature for the distribution system control of outdoor fan operation for air to vvater units defrost control of external airside heat exchanger for air to vvater systems protection for vvater flovv failure protection for high vvater temperature protection for high refrigerant pressure protection for air flovv failure on air to vvater units External controls should include room thermostat to regulate the space temperature and interlocked with the heat pump unit operation timer to optimise operation of the heat pump Table 30 Minimum provisions for warm air heat pumps ground to air water to air and air to air systems Minimum provision Supplementary information a Installation Minimum clearances adjacent to all airflow paths as recommended by the manufacturer should be maintained Pipe sizes should be in accordance with the manufacturer s recommendations The refrigerant pipework on split systems should be insulated in line with manufacturer s recommendations If summer cooling is provided by the heat pump provision should be made for condensate drainage from the indoor terminal units For ground to air and water to air systems all external pipework between the dwelling and the external heat exchanger should be insulated by following the guidance in the TIMSA guide For ground to air and water to
97. nd has official status Copyright in the VVVVVV thenbs com contents the cover the design and the typographical arrangement of this publication rests vvith the Crovvn unless othervvise stated The contents of this publication may be reproduced free of charge in any format or medium for the purposes of private research and study or for internal circulation vvithin an organisation This is subject to the contents being reproduced accurately and not in a vvay that implies official status Any publisher vvishing to reproduce the content of this publication must not use or replicate the ODPM crest or replicate the official version s style and appearance including the cover design and must not present their publication as being an official publication as this may confuse the public The reproduced material must be acknovvledged as Crovvn Copyright and the title ISBN 1 859462 25 1 of the publication specified The Office of the Deputy Prime Minister does not accept any responsibility for the accuracy and comprehensiveness of any other versions Any other use of the contents of this publication vvould require a copyright licence Please apply for a licence by writing to the Office of Public Sector nformation nformation Policy Team St Clements House 2 16 Colegate Norvvich NR3 1BQ Fax 01603 723000 or email HMSoOlicensing cabinet office x gsi gov uk Further information can be obtained from 2 781829 462256 gt VVVVVV ODS QgOV Uk
98. nd property heat loss Advice on this is given in the HETAS Guide and website AND d The minimum provisions for system circulation should be met as given in Table 18 row a 40 AND e The minimum provisions for fuel storage should be met as given in Table 18 rovv b AND f The minimum provisions for hot vvater storage systems and labelling of storage vessels should be met as given in Table 18 rovv c AND g The minimum provisions for system preparation and vvater treatment should be met as given in Table 18 row d AND h The system should be commissioned in accordance vvith the minimum provisions given in Table 18 row e AND i The minimum provisions for control of the heating and hot water circuits as given in Table 19 should be met An acceptable alternative to these is any boiler management control system that meets the specified zoning timing and temperature requirements AND j Pipevvork should be insulated according to the minimum provisions given in Table 20 Supplementary information Turn dovvn values i e the ratio of high to lovv output Tum dovvn ratios are generally very good gt 10 1 for automatic feed appliances with small firebeds Turn dovvn ratios are less good with large batch fed appliances unless these are used in coniunction vvith a hot vvater accumulator e Automatic appliances are likely to require less frequent refuelling Automatic e g electric or gas ignition is now
99. new and existing dvvellings should meet all of the follovving conditions a The minimum provisions for collector certification identification and testing should be met as specified in Table 31 rovv a AND b The minimum provisions for selection of transfer fluid in the collector primary loop as given in Table 31 rovv b should be met AND c The minimum provisions for circulation pump povver as given in Table 31 rovv c should be met AND d The minimum provisions for heat exchanger sizing as given in Table 31 rovv d should be met AND e The minimum provisions for control of the system as given in Table 31 rovv e should be met VVhere vvork is carried out in a dvvelling that already has a solar hot vvater system it is recommended that the system control is upgraded in line vvith the minimum provisions for systems in nevv dvvellings AND f Solar pre heated water storage should be in accordance with the minimum provisions given in Table 31 row f Where work is carried out in a dwelling that already has a solar hot water system it is recommended that the insulation is upgraded in line vvith the minimum provisions for systems in nevv dvvellings AND g The minimum provisions for storage of solar pre heated vvater as given in Table 31 rovv G should be met AND h The minimum provisions for system labelling and commissioning as given in Table 32 rows h and i should be met AND i The minimum provisions for insul
100. ng temperatures Open loops may also be used subject to the permits being obtained from the Environment Agency Heat may be supplied to the dwelling either by a water based heating system water to water heat pumps or by an air distribution system water to air heat pumps Air Source Systems ASHP Air to water Air to air Air source heat pumps extract heat directly from the ambient air Heat is supplied to the dwelling either by a water based heating system air to water heat pumps or by an air distribution system air to air heat pumps Air to air heat pumps may be single package or split systems All heat pump systems are at their most efficient when the source temperature is as high as possible the heat distribution temperature is as low as possible and pressure losses in air and water systems are kept to a minimum If installed in a new dwelling heat pumps should use refrigerants complying with the provisions of EU Directive 2037 2000 Heat pumps should be CE marked in accordance with the relevant EU Directives where applicable e g machinery safety low voltage pressure equipment electromagnetic compatibility If summer cooling is provided by the heat pump it is recommended that condensate drainage from the fan coil units is provided In order to comply with the requirements heating systems using a heat pump as the heat generator such as underfloor warm air and medium temperature radiator systems in new and existing
101. ngs differ only where practical constraints arise in existing dwellings The Domestic Heating Compliance Guide covers a range of frequently occurring situations but alternative means of achieving compliance may be possible The status of alternative provisions is explained in the Use of Guidance sections at the front of the Approved Documents The guide also refers to third tier publications which include information on good practice for design and installation over and above the minimum regulatory provision 1 The Building Regulations SI 2006 652 including Part L of Schedule 1 apply in England and Wales Separate regulations apply in Scotland and Northern Ireland and may require different provisions that those signalled in this guide as the minimum regulatory requirement 1 1 How to use this guide The Domestic Heating Compliance Guide provides guidance on the means of complying with the requirements of the Building Regulations Part L for conventional space heating systems and hot vvater service systems in dvvellings The guide comprises four self contained fuel based sections and five specialist technology specific sections Each fuel based section addresses all the requirements applicable to primary and secondary space heating and hot water service technologies for the particular fuel The specialist technology specific sections provide further guidance on the minimum provisions for particular specialised space heating and hot water
102. ngs which are provided as the secondary heat source should have a minimum efficiency gross calorific value of not less than 60 Supplementary information Further guidance on oil fired heating systems is available in the following publications Energy Efficiency Best Practice in Housing publications see www oftec org CE29 Domestic heating by oil boiler systems CE51 Central heating system specifications CHeSS CE54 Whole house boiler sizing method for houses and flats OFTEC Technical Books 2 3 4 and 5 see www oftec org BS 5410 31 Section 4 Electric heating systems This section provides guidance on the specification of fixed electric heating systems for dvvellings 4 1 Scope of guidance The guidance given in this section covers the following types of fixed electric heating systems e Electric boilers serving central heating systems e Electric warm air systems e Electric panel heaters e Electric storage systems including integrated storage direct systems Portable plug in appliances are not covered by the Building Regulations or by this guide It should be noted that fixed electrical installations in dwellings should comply also with Part P Where appropriate it may also be necessary to refer to the other sections in this guide covering underfloor heating and solar water heating 4 2 Electric boilers serving central heating systems in new and existing dwellings This section provides guidance on the speci
103. ns Cylinders heated primarily by electricity should be insulated such that their heat loss does not exceed the value given by the formula 1 28 x 0 2 0 051V79 kWh per 24 hours where V is the nominal cylinder capacity in litres British Standards BS 1566 2002 Copper indirect cylinders for domestic purposes Open vented copper cylinders Requirements and test methods BS 3198 1981 Specification for copper hot water storage combination units for domestic purposes BS 7206 1990 Specification for unvented hot water storage units and packages Vented and unvented systems 10 Cylinders should either be factory fitted with or have provision for two thermostatically controlled electrical heating elements or immersion heaters The lower element should be capable of heating up at least 85 of the cylinder contents The upper element should be capable of heating at least 60 litres of water The lower element should be connected so as to utilise the off peak electricity tariff and the upper for boost operation The vessel should be designed such that following reheating to 60 C from the off peak element at least 80 of the contents can be drawn off at 45 C or above at a flow rate of 0 251 s Primary stores Primary stores designed for electrical heating should have a standing heat loss at least 15 lower than that specified by the insulation requirements of sections 4 3 1 or 4 3 2 of the Water Heater Manu
104. o SjUIOd OM UCU SJOM JOU jUSLUNDOP sy JO v xipu ddy s pny ul pue yn lo s4 lloq MMM pue swa sAs MAU 104 D UL D SE ul souepING y Aq peyesjysuowep ued Aouad UIIUO ajgeyiene SI aseqejeq ADUAaIIYA U q Pinoys s lloq 104 spuaw nb y YUM edUeI dWOD Bulysixe ul q A u r nu up ldde ue u r kl ju uidinb mau y 10 qeuosp s y JO YNEGAS 98 UEL 559 104 q pinous ADUAIOIYS io y e lqel1d 55e yxnasqss 247 5ul znu pi uo Vue 10 f n e BuIAJOAU JOU 61 11002 IHdV L lo q p lle sul si lloq 104 L UlnululIN uoneuluo ul sBuljjamMp Bunsix ul suu 1s s 1lu uu 2Oep d 1 410 UOISIAOId WNWIUIN sBuIll AAp Bunsix pue m u u suu 1s s M U JO UOISIAOId WNWIUIN ezeUdoidde l1 uA sBul i AAp Sunsix u pue SHuljjamMp Mou u Sul s4S Bunesu yo Buiuoissiuuuuo5 pue uoljesedaid ul s4sS abe10 s 1978M 104 ul s4S Su lo9 JJ H lloq 10 SUOISIAOIG WNWIUIN 6 lqEL 25 sabeyoed pue sun abesojs 1 B A JOY 104 uolleolJio dS 0661 902 SA SDOU1 LI 1S pue sju wanb y ssapulj AD
105. of SAP 2005 n order to comply with the requirements of Part L gas fired decorative fires in new and existing dvvellings should meet the follovving conditions a The appliance should meet the product standards specified in BS EN 509 2000 Decorative fuel effect gas appliances AND b No more than one appliance should be installed per 100m of dvvelling floor area 2 7 Gas fire for secondary space heating provided as part of a combined fire and back boller unit A combined fire and back boiler unit can only be installed as a replacement for an existing combined fire and back boller unit and then only when the criteria of the Condensing Boiler Installation Assessment procedure are satisfied as outlined in Appendix A of this document In order to comply vvith the requirements of the Building Regulations the gas fire provided as a secondary heat source as part of a combined fire and back boiler unit when provided as a replacement system in existing dvvellings should meet the following conditions 4 At the time of writing prEN 14829 is in draft but it may not appear as a European standard The type of appliance for which this standard is proposed is on the market having been certified as complying with the essential requirements of the Gas Appliance Directive The BSI is producing a parallel UK safety installation standard for appliances designed to comply with prEN 14829 21 a The appliance should be one of the types described in T
106. on may be calculated using the sum of the thermal resistance of the floor finish and the thermal resistance of the underlying heated layer all multiplied by a factor of 10 Supplementary floor heating system thermal insulation may be either supplied independently or added to the statutory floor insulation requirement iv Notwithstanding iii above floor heating systems intended for cyclical operation or installed over unheated rooms should be separated from the structural floor by a layer of thermal insulation of at least 1 25m K W thermal resistance and installed below the heated plane Intermediate floors with heated rooms below complying with both Part L and Part E of the Regulations should have a separating layer of system thermal insulation to comply with BS EN1264 Part 4 where the minimum thermal resistance is given as not less than R 0 75m K W 2b Intermediate floors vvith heated rooms belovv Electric systems ntermediate floors vvith heated rooms belovv complying with both Part L and Part E of the Regulations should have a separating layer of system thermal insulation where the minimum thermal resistance is given as not less than R 0 5m K W Thermal insulation of party floors is essential because the floor ceiling is directly coupled to the heating elements 3 System design to minimise distribution losses i Underfloor heating distribution boards or warm water distribution manifolds should be
107. ope of guidance 55 Section 8 Heat pump systems 58 8 1 Scope of guidance 58 Section 9 Solar vvater heating 62 9 1 Scope of guidance 62 Section 10 Individual domestic micro combined heat and power 68 Appendix A Assessing the case for a non condensing boiler 69 Section 1 ntroduction Part L of Schedule 1 to the Building Regulations is concerned with the conservation of fuel and power in buildings For dvvellings Part L is supported by two Approved Documents Approved Document ADL1A and Approved Document L1B ADL1B In addition to Part L other Regulations also bear on the energy performance of dwellings and their heating systems ADL1A gives guidance on how to satisfy the energy performance provisions of the Building Regulations for new dvvellings ADL1B gives guidance on how to satisfy the energy performance provisions of the Building Regulations for work in existing dvvellings Both Approved Documents repeat the relevant regulatory requirements verbatim in various places distinguished by a green background with the aim of making them complete references for ordinary purposes In cases of doubt however it may be necessary to refer directly to the Building Regulations as amended These Approved Documents were published in March 2006 in support of the amendments to the Building Regulations SI 2006 652 The amendment will come into force on 6 April 2006 The new Approved Documents ADL1A and ADL1B 2006 are more strategic in na
108. or charge control and temperature control of the heating system as set out in Table 15 rovv Cc Table 15 Minimum provisions for primary and secondary electric heating systems other than electric boilers Electric Heating System Minimum provision Supplementary information a Electric vvarm air systems Time and temperature control either integral to the heater or external Provide either i a time svvitch programmer and room stat or a programmable room thermostat should be provided 2 Zone control Dvvellings vvith a total usable floor area up to 150m should be divided into at least tvvo space heating zones vvith independent temperature control one of vvhich is assigned to the living area Dvvellings vvith a total usable floor area greater than 150m should be provided with at least two space heating zones each having separate timing and temperature controls Time control should be provided using i multiple heating zone programmers or a single multi channel programmer or iii programmable room thermostats or iv separate timers to each circuit or v a combination of iii and iv above Single storey open plan dwellings in which the living area is greater than 70 of the total floor area sub zoning of temperature control is not appropriate b Panel heaters Local time and temperature control Time control provided by a programmable time switch integrated into
109. or nevv systems unless othervvise stated in the relevant section n order to comply with the requirements of Part L gas fired central heating systems which are provided as new systems or replacement systems in dvvellings should meet all of the following conditions a The boller should have a minimum efficiency as defined by its SEDBUK value as given in Table 1 rovv a AND b The minimum provisions for system circulation as given in Table 1 rovv b need to be met AND c The minimum provisions for hot vvater storage and labelling of storage vessels as given in Table 1 rovv c need to be met AND d The minimum provisions for system preparation and water treatment as given in Table 1 rovv d should be met AND e The system should be commissioned in accordance vvith the minimum provisions given in Table 1 row e AND f The minimum provisions for boller interlock zoning and time control and temperature control of the heating and hot vvater service circuits as described in Table 2 should be met An acceptable alternative to these is any boiler management system that delivers the specified zoning timing and temperature and boiler interlock control provisions When gas boilers are installed as part of a replacement system the minimum level of system controls should be provided as described in Table 2 unless they are already installed and fully operational If an individual component of the control system is being re
110. or part of the space heating load 8 1 Scope of guidance This guidance in this section applies to the following types of heat pump technologies Heat pump type Warm or hot Warm air water systems systems Ground Source Systems GSHP Ground to Ground to air Heat energy is extracted from the ground using closed pipe loops buried water horizontally in trenches or in vertical boreholes that are connected back to the GSHP The fluid circulating in the closed loop is normally a water propylene glycol antifreeze mixture or acceptable equivalent but some direct acting GSHPs use refrigerant Open loops may also be used to collect water from an aquifer and discharge via a separate aquifer downstream of the water table flow systems of this type normally require permits from the Environment Agency Heat extracted from the ground may be supplied to a dwelling either by a vvater based heating system ground to water heat pumps or by an air distribution system ground to air heat pumps Water Source Systems WSHP Water to water Water to air Heat energy is extracted indirectly from a water source using closed pipe loops as a heat exchanger The closed loop is connected back to the water to water heat pump The water source may be a lake pond or river or other stable water source The fluid circulating in the closed loop will normally be water but a water propylene glycol or acceptable equivalent antifreeze mixture may be used depending on operati
111. orage vessel is replaced in an existing system any pipes in the situations above that are exposed as part of the work or are otherwise accessible should be insulated in accordance with the recommendations in this guide in line with the maximum permissible heat loss indicated in the Supplementary Information column and labelled accordingly or to some lesser standard where practical constraints dictate Insulation for pipework in unheated areas Extra provision may need to be made to protect central heating and hot water pipework in unheated areas against freezing Further guidance is available in e BS 5422 2001 Method for specifying thermal insulating materials for pipes tanks vessels ductwork and equipment operating within the temperature range of 40 C to 700 C e BRE Report No 262 Thermal insulation avoiding risks 2002 edition Where insulation is labelled as complying with the Domestic Heating Compliance Guide it must not exceed the following heat loss levels Pipe diameter OD Maximum permissible mm heat loss W m 8mm 7 06 10mm 7 23 12mm 7 35 15mm 7 89 22mm 112 28 10 07 35mm 11 08 42mm 12 19 54mm 14 12 In assessing the thickness of insulation required to meet the provision standardised conditions should be used in all compliance calculations based in this instance on a horizontal pipe at 60 C in still air at 15 C Further assistance in converting these he
112. pass valves where the bypass only operates when flow temperature has dropped below a set level is recommended 53 Supplementary information Additional information is provided in the documents and standards listed belovv Good Practice Guide GPG 234 Guide to community heating and CHP commercial public and domestic applications Available from the Carbon Trust BS EN 13941 2003 Design and installation of preinsulated bonded pipe systems for direct heating BS EN 14419 2003 District heating pipes Preinsulated bonded pipe systems for directly buried hot vvater netvvorks Surveillance systems BS EN 253 2003 District heating pipes Preinsulated bonded pipe systems for directly buried hot water networks Pipe assembly of steel service pipe polyurethane thermal insulation and outer casing of polyethylene BS EN 448 2003 District heating pipes Preinsulated bonded pipe systems for directly buried hot water networks Fitting assemblies of steel service pipes polyurethane thermal insulation and outer casing of polyethylene BS EN 488 2003 District heating pipes Preinsulated bonded pipe systems for directly buried hot water networks Steel valve assembly for steel service pipes polyurethane thermal insulation and outer casing of polyethylene BS EN 489 2003 District heating pipes Preinsulated bonded pipe systems for directly buried hot water networks Joint assembly for steel service pipes polyurethane thermal insulat
113. placed in an existing system for example a room thermostat it is not necessary to upgrade the system to meet the minimum requirements AND g Pipework should be insulated as described in Table 3 uonern zro p du nd I n o Pinoys uonein lo suononu sul s soinjoejnuew y ul p ul ds did uunuululuu JO 6140 4 Aue Ul A uonounluo ul q p nous A PA ssed q onewoye ue ssedAq P 10 UOUSISISUL S APE SUOHJON SU 5 out Ji q YHAPID lUu S suu 1s s Buljsixe povedal p duund n pinous ale 5 100 u uAA stu s s M U JO SV Mewud 1972m JOY 9 ns uuop pue sdeds 104 51 15 e wia shs q UAD OO Suolssiuu3 121 S 5002 dVS 10 ZL lQEL u au 2002 s6ulljamg 40 2 dVS 10 Z lQEL Wo U yE a p nous S104924 1u uuss ssv uonejjesuj y 0 UOISSILUA OO Su Oe siy Bueu aiojaq p ne y ul NO 195 EL M Y SAO O SIU 1S X MOU y ul Deen ey o Buraq XlAH S s ue suun zl feuond x J uA BUlUS QE S 104 oun l p sn f n y JO 1012E UOISSILUD OO 94 JO ainpasoid panoidde ay pinp ucidulo one
114. py for building control compliance purposes 70 Table A1 Flue and terminal installation options that are NOT to be considered Flue and terminal positions that do not comply with Approved Document J of the Building Regulations A shared flue unless specially designed to be shared by condensing boilers A flue passing through a wall or floor that must not be pierced for structural reasons An internal flue extension exceeding 4m ignoring the part that passes through a loft attic space A flue that passes through another dwelling or another building in different ownership or another fire compartment A vertical flue pipe visible on the outside of the building facing the main approach direction usually the front This refers only to the flue pipe not the flue terminal a terminal may be positioned on any side of the building Wall terminals that discharge under the roof of a car port Wall terminals with horizontal discharge less than 2 5m from any wall fence building or property boundary facing the terminal Wall terminals with horizontal discharge less than 2 5m from a car parking space and less than 2 1m above the ground Wall terminals less than 2 1m above the ground with horizontal discharge of the flue products across a public footway route or a patio hard surface area Table A2 Boiler positions NOT to be considered 1 Gas boiler Where the boiler or extended internal flue is in a
115. q 65 3 Office of the ez di Deputy Prime Minister s Creating sustainable communities Domestic Heating Compliance Guide May 2006 15 Edition 0 23 Office of the 142 Deputy Prime Minister SIN 00 2 ob xos Creating sustainable communities The Building Regulations 2000 As amended 2006 DOMESTIC HEATING COMPLIANCE GUIDE COMPLIANCE WITH APPROVED DOCUMENTS L1A NEW DWELLINGS AND L1B EXISTING DWELLINGS First edition May 2006 Published by NBS for the Office of the Deputy Prime Minister NBS is part of RIBA Enterprises Ltd RIBA Bookshops Mail Order 15 Bonhill Street London EC2P 2EA Telephone orders General enquiries 020 7256 7222 Fax orders 020 7374 2737 Email orders sales ribabookshops com Or order online at www thebuildingregs com RIBA Bookshops 66 Portland Place London W1B 1AD Telephone 020 7256 7222 113 115 Portland Street Manchester M1 6DW Telephone 0161 236 7691 Birmingham amp Midland Institute Margaret Street Birmingham B3 3SP Telephone 0121 233 2321 RSUA 2 Mount Charles Belfast BT7 1NZ Telephone 028 9032 3760 Renew Rooms 82 Wood Street Liverpool L1 4DQ Telephone 0151 707 4380 Crown copyright 2006 Stock code 57645 ISBN 10 1 85946 2251 ISBN 13 978 1 85946 225 6 This publication has been approved by Ministers and has official status Copyright in the contents the cover the design and the typographical arrangement of this publication rests with the
116. quipment is commissioned 3 Documentation No minimum requirement Information concerning the solar domestic hot water system should be provided to the dwelling owner and or user as applicable The documentation should include e users manual e warranty information a recommended maintenance schedule commissioning certificate e full contact details of the installer 65 Table 33 Minimum provision for insulation of pipes for solar hot vvater systems Minimum provision Supplementary information n nevv and replacement systems should in the following cases be insulated in accordance with the recommendations in this guide in line with the maximum permissible heat loss indicated in the Supplementary Information column and labelled accordingly e All pipes of a solar primary system should be insulated throughout the length of the circuit e All other pipes connected to hot water storage vessels including the vent pipe should be insulated for at least 1m from their points of connection to the cylinder or they should be insulated up to the point where they become concealed The insulation should be suitably rated for the maximum foreseeable pipe temperature applicable and where external also be resistant to vermin attack and climatic degradation In a dwelling that already has a solar hot water system it is recommended that the insulation is upgraded in line with these minimum provisions where
117. rature control e the advantages of having local storage in terms of security of supply Where the network is extensive and hot water production is centralised a two stage water heating system can be used to deliver low return temperatures In this design the return water from the space heating circuit is used to pre heat the cold feed to the domestic hot water d2 Water treatment A suitable system for introduction of water treatment chemicals into the CH system in a controlled manner with facility for monitoring of water quality should be provided A suitable long term programme of water treatment is essential to preserve the life of the CH system by limiting internal corrosion Additional chemical and physical treatment should be evaluated especially for larger systems including e removal of oxygen by physical means e softened water supply e side stream filtration biocide e Heat meters Provision should be made in the design for including heat meters either at the time of installation or at a later date without major pipework changes f Commissioning e The CH system should be commissioned so that the design volume flow rates are supplied to each dwelling and there is no excessive bypassing of water that would lead to higher pumping energy use e The flow rates in individual heat emitters should be balanced using appropriate return temperatures or by using calibrated control valves e
118. rential pressures To reduce the incidence of scaling the control valve should shut off the primary flow when there is no domestic hot water draw off A small intermittent flow is an advantage to maintain the temperature within the heat exchanger so as to provide more rapid heat up 51 Table 24 Minimum provision for domestic hot water production storage and vvater treatment heat meters and commissioning for community heating Minimum provision Supplementary information d1 Hot vvater service production and storage The hot vvater service system should be controlled using variable volume control principles and be designed to maintain lovv return temperatures in the primary CH circuit Hot vvater can be produced in four vvays in CH systems e in individual dwellings using indirect storage cylinders e in individual dwellings using instantaneous plate heat exchangers centrally using storage calorifiers with either an indirect coil or an external plate heat exchanger centrally using an instantaneous plate heat exchanger In selecting the system consideration should be given to e the impact on return temperatures in the CH system e the impact on flow rates in the CH system e the impact on heat demand profiles and compatibility with the heat source e standing losses from storage cylinders calorifiers and the impact on energy use e the quality of service provided in terms of flow rate and tempe
119. res as follows systems A separate flow temperature high limit thermostat is required for warm water systems connected to any high water temperature heat supply i e operating at more than 60 C e Mixed systems containing both radiators and floor heating connected to a common high water temperature supply i e operating at more than 60 C should be provided with a separate means of reducing the water temperature to the floor heating system 2 Room temperature e Each room should have its own temperature control control electric and device however it may be acceptable for adjacent wet floor heating rooms with similar function to share a thermostat or systems sensor e g separate kitchen and utility areas e Bathrooms or en suites which share a heating circuit with an adjacent bedroom will provide heat only when the bedroom thermostat is activated In such cases the bathroom or en suite areas should be fitted with an independent towel rail or radiator e Weather compensating controllers should be installed 3 Time control electric Dwellings with a total usable floor area up to Facilities for automatic and wet floor heating 150m should be divided into at least two zones setback of room temperature systems with independent temperature control one of which to a lower level at night or is assigned to the living area during unoccupied periods Dwellings with a total usable floor area greater recommended for
120. s increasing the morning peak demand and hence causing more use of the boiler than necessary 3 Temperature control of space heating e Separate temperature control of zones within the dwelling should be provided using i room thermostats or programmable room thermostats in all zones or a room thermostat or programmable room thermostat in the main zone and individual radiator controls such as Thermostatic Radiator Valves TRVs on all radiators in the other zones or iii a combination of i and ii above Control valves and TRVs should be two port type to reduce flow rates under part load Differential pressures across the control valves and TRVs should be controlled to maximum values to ensure that the control valves work effectively and maintain shut off 4 Temperature control of domestic hot water 5 Limitation of maximum flow rate into building or dwelling e Temperature control of the domestic hot water service should be provided by means of two port control valves either electrically operated or direct acting e The maximum design flow rate into the dwelling heating system should be limited by suitable control and balancing valves to maintain the overall balance in the network and to avoid excessive pumping energy Where instantaneous heat exchangers are used the control valve should be selected to maintain steady temperatures lt 5 C for a range of draw off rates and primary diffe
121. secondary circulation is used all pipes kept hot by that circulation should be insulated For replacement systems whenever a boiler or hot water storage vessel is replaced in an existing system any pipes in the situations above that are exposed as part of the work or are otherwise accessible should be insulated in accordance with the recommendations in this guide in line with the maximum permissible heat loss indicated in the Supplementary Information column and labelled accordingly or to some lesser standard where practical constraints dictate Insulation for pipework in unheated areas Extra provision may need to be made to protect central heating and hot water pipework in unheated areas against freezing Further guidance is available in BS 5422 2001 Method for specifying thermal insulating materials for pipes tanks vessels ductwork and equipment operating within the temperature range of 40 C to 700 C BRE Report No 262 Thermal insulation avoiding risks 2002 edition Where insulation is labelled as complying with the Domestic Heating Compliance Gulde it must not exceed the follovving heat loss levels Pipe diameter OD Maximum permissible mm heat loss W m 8mm 7 06 10mm 7 23 12mm 7 35 15mm 7 89 22mm z 28mm 10 07 35mm 11 08 42mm 12 19 54mm 14 12 In assessing the thickness of insulation required to meet the provision standardised conditions should be used in all co
122. sed in conjunction with boiler plant the control system should ensure as far as practicable that the CHP plant operates as the lead heat source a CHP capacity should be optimised to meet the required economic and environmental objectives A reasonable minimum proportion of the annual heat supply from CHP would be 45 of the annual heat demand space domestic and hot water heating b To maximise the use of CHP heat over the year consideration should be given to the use of thermal storage to meet peaks especially in the early morning period c The procedure given in SAP 2005 should be used to calculate the carbon emissions from CHP systems 4 Heat pumps No minimum requirement but see supplementary information Heat pumps can be used as a heat source for CH systems Selection of operating temperatures to suit both efficient community heating systems and achieve high coefficients of performance is important if carbon emissions are to be reduced This may lead to the use of underfloor heating and the provision of hot water service by other means Where heat pumps are installed in conjunction with conventional heating boilers a reasonable minimum proportion of the annual heat supply from the heat pump would be 45 of the annual space heating demand 5 Solar No minimum requirement but see supplementary information Solar thermal panels can be used as the heat source for a centralised domestic hot water system
123. service technologies The structure of the guide is illustrated in Figure 2 and is as follows Fuel based sections Section 2 Gas fired primary and secondary space heating and hot water service 2 Section 3 Oil fired primary and secondary space heating and hot water service 3 Section 4 Electric primary and secondary space heating and hot water service 4 Section 5 Solid fuel primary and secondary space heating and hot water service 5 Specialist technology specific sections Section 6 Community heating 6 Section 7 Underfloor heating 7 Section 8 Heat pumps 8 Section 9 Solar water heating 9 Section 10 Micro CHP Combined Heat and Power 10 For any particular application the relevant fuel based section and or specialist technology specific section must be read in conjunction with this introduction and the following generic sections Section 1 Introduction Section 1 1 How to use this guide Section 1 2 Glossary Section 1 3 The Building Regulations requirements and the guidance in Approved Documents L1A and L1B Section 1 4 Replacement of primary heating appliances e Section 1 5 Notification of building work For each type of space heating or hot water service system guidance on the minimum provisions needed to comply with Part L is supported by commentaries in italic font with a shaded background These commentaries are labelled Supplementary information and may be useful when interpreting the min
124. sion factor of the fuel used in the service being replaced to that of the fuel used in the new service before making the checks described in paragraph a or b above The CO emission factors should be taken from Table 12 of SAP 20055 The aim is to discourage an existing appliance being replaced by a significantly less carbon efficient one Examples An old oil fired boiler with a seasonal efficiency of 72 is to be replaced by a dual solid fuel boiler with a seasonal efficiency of 65 The equivalent seasonal efficiency of the dual solid fuel boiler would be 65 x 0 265 0 187 92 1 i e satisfactory where 0 265 and 0 187kg CO kWh are the emission factors for oil and dual fuel appliances respectively as taken from Table 12 in SAP 2005 An LPG fired boiler of 81 efficiency is to be replaced with an oil boiler post 01 04 07 The new oil boiler must i have an efficiency of not less than 86 Table 9 and also its carbon equivalent efficiency must be greater than the existing LPG boiler minus maximum 2 percentage points allowed The existing LPG boiler efficiency 81 therefore the carbon equivalent efficiency of the proposed new oil boiler must not be less than 79 81 2 To calculate the required efficiency for the proposed new oil boiler with SAP 2005 fuel factors of Oil 0 265 LPG 0 234 The actual SEDBUK approved new oil boiler efficiency must be greater than 79 0 234 0 265 79 0 883 89 5 2 Th
125. sion factors should be determined based on the particular details of the scheme but should take account of the annual average performance of the vvhole system i e the distribution circuits and all the heat generating plant including any CHP and any waste heat recovery or heat dumping The calculation of the Dwelling CO Emission Rate should be carried out by a suitably qualified person detailing how the emission factors were derived AND d The minimum provisions for control systems within dwellings should be met as given in Table 23 AND e The minimum provisions for insulation of pipework should met as given in Table 25 Table 21 Minimum provisions for the design of new community heating systems to maximise efficiency of heat generation and minimise energy use by pumps Minimum provision Supplementary information 1 Boilers for CH l Boiler only community heating e When calculating the carbon emissions rating systems for new dwellings may the type and quantity of fuel used and also the be used provided that the carbon electricity needed to operate the central plant emissions calculated comply with and pumps should be taken into account the target carbon emissions rating For systems using condensing boilers e Boilers should be selected to a To achieve high boiler efficiency return comply with the boiler efficiency temperatures from radiator circuits should requirements of the Non be selected lower than 50 C domestic He
126. stem b The specification of central heating systems in existing dwellings where previously space heating was not provided by central heating this situation is also referred to in this section as anew system c The specification of a replacement central heating system and or component in existing dwellings where central heating is already installed this situation is referred to in this section as a replacement system In situations a and b above the guidance for compliance of new systems in new and existing dwellings with Part L is the same In situation c above that is for replacement systems in existing dwellings in most cases the guidance for compliance with Part L is as for new systems unless otherwise stated in the relevant section In order to comply with the requirements of Part L a central heating system using a solid fuel appliance which is provided as a new system or replacement system in dwellings should meet all of the following conditions a The appliance should be from the HETAS categories D F G and J as defined in Table 16 AND b The appliance should have a minimum efficiency gross calorific value of no less than that specified in Table 16 for that category of appliance AND c The installer should confirm that the ratio of heat to room and heat to water is appropriate for the room and total property This will require reference to installation practice guidelines including calculation of room a
127. t loss indicated in the Supplementary Information column and labelled accordingly or to some lesser standard where practical constraints dictate Insulation for pipework in unheated areas Extra provision may need to be made to protect central heating and hot water pipework in unheated areas against freezing Further guidance is available in BS 5422 2001 Method for specifying thermal insulating materials for pipes tanks vessels ductwork and equipment operating within the temperature range of 40 C to 700 C BRE Report No 262 Thermal insulation avoiding risks 2002 edition Where insulation is labelled as complying with the Domestic Heating Compliance Guide it must not exceed the following heat loss levels Pipe diameter OD Maximum permissible mm heat loss W m 8mm 7 06 10mm 7 23 12mm 7 35 15mm 7 89 22mm z 28mm 10 07 35mm 11 08 42mm 12 19 54mm 14 12 In assessing the thickness of insulation required to meet the provision standardised conditions should be used in all compliance calculations based in this instance on a horizontal pipe at 60 C in still air at 15 C In new systems pipes should in the following cases be insulated with insulation complying with the requirements of the Domestic Heating Compliance guide in line with the maximum permissible heat loss indicated in the Supplementary Information column and labelled accordingly 3 3 Oil fired range cookers wi
128. ter OD Maximum permissible mm heat loss W m 8mm 7 06 10mm 7 23 12mm 7 35 15mm 7 89 22mm z 28mm 10 07 35mm 11 08 42mm 12 19 54mm 14 12 Regulations n assessing the thickness of insulation required to meet the provision standardised conditions should be used in all compliance calculations based in this instance on a horizontal pipe at 60 C in still air at 15 C Further assistance in converting these heat loss limits to levels thickness of insulation for specific thermal conductivities is found in the TIMSA HVAC Guidance for achieving compliance with Part L of the Building 2 3 Gas fired range cookers with integral central heating boiler This section provides guidance on the specification of gas fired range cookers with integral central heating boilers for space heating and hot water in dwellings In order to comply with the requirements of Part L gas fired range cookers with an integral central heating boiler which are provided in new or existing dwellings should meet the following conditions a The appliance should have two independently controlled burners one for the cooking function and one for the boiler and the boiler should have a Seasonal Efficiency SEDBUK value in excess of 75 Information about appliance performance should be included in declarations to building control bodies and in the commissioning information given at completion The manufacturer s declaration of appliance performance
129. th integral central heating boilers This section provides guidance on the specification of oil fired range cookers with integral central heating boilers for space heating and hot water in dwellings Note the guidance applies only to twin burner cooker boilers which should not be confused with the type of range cooker described as a single burner provide only a cooking function is not included in dry heat range cooker The latter is intended to SAP 2005 calculations and does not come within the scope of the Building Regulations energy efficiency requirements In order to comply with the Building Regulations energy efficiency requirements oil fired range cookers with an integral central heating boiler which are provided in new or existing dwellings should meet all of the following conditions a function and one for the boiler AND The appliance should have two independently controlled burners one for the cooking 29 b The boiler should have a Seasonal Efficiency value in excess of 7596 The appliance manufacturer s declaration of appliance performance shall include the following words Seasonal efficiency SEDBUK xx Case heat emission value yykW Heat transfer to water at full load zzkW The efficiency values may be used in the UK Government s Standard Assessment Procedure SAP for energy rating of dwellings The test data from which they have been calculated has been certified by ins
130. the appliance or a separate time switch Individual temperature control provided by integral thermostats or by separate room thermostats or programmable room thermostats Panel heater systems provide instantaneous heat c Storage heaters 1 Charge control Automatic control of input charge should be provided Charge control is the ability to detect the internal temperature and adjust the charging of the heater accordingly 2 Temperature control Controls for adjusting the rate of heat release from the appliance should be provided such as an adjustable damper or some other thermostatically controlled means 37 Section 5 Solid fuel heating systems This section provides guidance on the specification of solid fuel heating systems for dvvellings 5 1 Scope of guidance The guidance given in this section covers the following types of solid fuel heating appliances and systems used to deliver primary and secondary heating Batch fed open fires Batch fed and automatic feed dry room heaters stoves Batch fed log and multi fuel appliances Automatic feed pellet stoves Batch fed and automatic feed room heaters with boilers Batch fed cookers with boilers not exceeding 7 5kW Batch fed independent boilers and automatic feed anthracite and wood pellet independent boilers Central heating systems using certain types of solid fuel appliances Where appropriate it may also be necessary to refer to the sec
131. ting boilers Vaporising appliances providing secondary heating or hot water Fixed independent space heating devices Where appropriate it may be necessary to refer to the sections in this guide covering community heating underfloor heating heat pumps solar water heating and micro CHP 3 2 Oil fired wet central heating systems This section provides guidance on the specification of oil fired wet central heating systems for dwellings that if followed will satisfy the energy efficiency requirements of the Building Regulations Terminology and applicability of guidance to different scenarios in new and existing dwellings The guidance in this section applies to the following situations a The specification of central heating systems in new dwellings this situation is referred to in this section as a new system b The specification of central heating systems in existing dwellings where previously space heating was not provided by central heating this situation is also referred to in this section as anew system c The specification of a replacement central heating system and or component in existing dwellings where central heating is already installed this situation is referred to in this section as a replacement system In situations a and b above the guidance for compliance of new systems in new and existing dwellings with Part L is the same In situation c above that is for replacement systems in existing dwellin
132. tions of this guide on community heating underfloor heating solar water heating and micro CHP 5 2 Solid fuel appliances for primary heating In order to comply with the requirements solid fuel appliances that are provided in new and existing dwellings for primary heating should have a minimum efficiency gross calorific value no less than that specified in Table 16 for that category of appliance Table 16 Solid fuel appliance categories and minimum efficiencies Category Appliance description Minimum efficiency Feed gross calorific value B1 Open fire inset 37 Batch B2 Open fire freestanding 47 Batch convector B3 Open fire inset convector 45 C1 2 Open fire and boiler 50 Batch inset or freestanding D1 2 3 Open fire high output 63 Batch boiler trapezium D4 Open fire high output 65 Batch boiler rectangle E1 Dry room heater often 65 Batch automatic known as dry stove E2 Logs only 65 Batch E3 Multi fuel 65 Batch E4 Pellet stove 65 Auto F Room heater with boiler 67 Batch automatic G1 Cooker with boiler not 50 boiler only Batch exceeding 3 5kW G2 Cooker with boiler 60 boiler only Batch 3 5 7 5kW J1 2 3 Independent boiler batch 65 Batch fed J4 Independent boiler 70 rising to above Auto anthracite 20 5kW 75 J5 Independent boiler wood 65 Auto pellet 38 Supplementary information on solid fuel appliances Minimum effici
133. ture and rely on second tier documents to provide detailed information on the minimum provisions necessary to comply with the requirements of the Regulations This guide the Domestic Heating Compliance Guide is a second tier document referred to in ADL1A and ADL1B as a source of guidance on the means of complying with the requirements of the Building Regulations for space heating systems and hot water systems The guide was prepared with the assistance of industry bodies It covers conventional means of providing primary and secondary space heating and domestic hot water for dwellings in use in England and Wales at the time of writing For new dwellings guidance is provided on the design limits for building services systems referred to in ADL1A For existing dwellings guidance is provided on reasonable provision for the installation or replacement of controlled services as referred to in ADL1B Figure 1 Status of the Domestic Heating Compliance Guide Legal requirements 1st Tier 2nd Tier 3rd Tier in the Building Regulations and Approved Document g Domestic Heating le Industry guides Part L of Schedule 1 Pat L1A amp 1B Compliance Guide good practice guides codes of practices and standards The guide identifies standards of provision that meet the requirements for systems in new build and in those in existing buildings when work is being undertaken The levels of performance for new and existing dwelli
134. u w nb J Ped PUB Hed YUM Ajdwod uolj nsui UUM q pinoys sisiol 100 U M Q SPIOA ul SEBO 1004 MO Q p jie su s lqe Bulyeay JooO papunN 91179942 Huljoe 49911 uon onnsuoo S100 Jeun ul 01 UO9 1elsouuj u1 19 UuI1 WOOd Bunoe a qeo 91179944 go ul JO p sn q o s niliqede Buisu s 100 pue S40OH p p zos ul 101 U09 150 4 uun Ee YM S UOZ Hulyeay UE 40 lin 9PU JBAO UA SIEISOULUSU LOO WI 6 011 00 JENPIAIPU UA AOQE Z lQEL Ul umoys slu uu uinbal y o peyejNsu q pinous s1004 p 1e U V suu l1s s Beiols uuuu0S Buip ox 104 uou Bunoe 15 uaip SS UNO1U JO Sp 19S UI p jje su q pinous s lqe Hulyeay 4o l pun Huljoe 1010 uononnsuoo qeS5 Su15 l 3 z p uiquuo2 JO llenpiAIpui p sn o s niiqedeo Buisu s 100 pue 1e UYMA uug1s s v JO s uoz WE pi nous n UUM sle1SOuu u WOO QeuuuueiBoOid A e se 15 A l u 1 Buisu s 100 pue Buisu s S O1ESU LUO JAYJLEM af
135. u pue SSO 1894 oU UA lduuoo p nous s ddo uey sjenaew u sapulo q 8618 58 40 000Z L 9994 Sg Jo 514 esy pue sso esy y uA Ajdwod p nous S SS A 5 197eM 10 Jeddood pejue Be o s YA JOH o winiweld Aap e Aed o Ajayi ase s apjoyesnoy 5111 Mojaq se pauajaid are BYQSZ uey 4 B si yunq 119 fez ulul pilos 104 payloads s Jo qnuenb uunuulul uu ON suu s s MAU JO SV 51 AU 1589 ye Jo Ayloedeo l n e POOM 104 UOUEOOL Ap pue 1lu lu Auo2 e ul ant s nnuenb ejqeuoseal Jo Be4o s 104 pew uoIsIAO1d Beuols l n q p sn aq jou pinous pue ADualolye SCDE l s S paduind Au p s sp WOS Ul INDIO SIY 104 Deen aq ew l s 4S uoudlsouu u pue WEI jamo wooIy eq y Iuouuulo sI 5111 Deg z Buu pinouus y WO 189 ajedissip O yea 1801 e sul s4s Bump u jenu a J nj pilos 1SOVV SLU S S m u 10 SV p sn s lA p 5 6 E JO v Aq poprad ileoMo ds asoum 1000 S SS A uoisuedx YM SW JS S Bulyeay p je s o Daul 1ou pinous seouel dde j nj piloS o PEMO O pinous sio1eIp 1 yes ye y qo Buluonisod pue 215 ay uo suononusul 5 y
136. ue options taking no account of householder s preferences In some positions special condensate disposal arrangements may be necessary Some installation options are NOT regarded as feasible for the purpose of this assessment procedure and should NOT be considered They are listed in Tables A1 and A2 They do not necessarily contravene standards or regulations and in some cases they may be acceptable to the householder but they are not acceptable for the purposes of the assessment Further advice on the bases of Tables A1 and A2 is given in the Guide 8 If there are no feasible condensing boiler installation options proceed to section 14 omitting sections 7 to 13 Such cases are unusual and a clear explanation should be inserted in section 14 following the advice in the guide Otherwise continue below 9 Complete section 9 inserting points from Table A3 Where a change of boiler fuel is proposed the assessment should reflect this decision 10 Complete sections 7 8 and 10 to 13 for the installation option that gives the lowest assessment score in section 13 Evidence may be required that all feasible options have been considered and that this is the lowest scoring option so forms used to assess other options should be attached when the final signed form is made available 11 Complete and sign the declaration in section 14 ticking one box only Supply the completed form to the householder for use when the house is sold and retain a co
137. um output Some automatic solid fuel systems can be fitted vvith vveather compensation and incorporate multi zone control It is important to seek guidance from the manufacturer especially if the heating package is to include other fuels Table 20 Minimum provisions for insulation of pipes serving solid fuel central heating systems Minimum provision Supplementary information n new systems pipes should in the following cases be insulated in accordance vvith the recommendations in this guide in line vvith the maximum permissible heat loss indicated in the Supplementary Information column and labelled accordingly e Primary circulation pipes for heating and hot water circuits should be insulated wherever they pass outside the heated living space or through voids which communicate with and are ventilated from unheated spaces e Primary circulation pipes for domestic hot water circuits should be insulated throughout their length subject only to practical constraints imposed by the need to penetrate joists and other structural elements All pipes connected to hot water storage vessels including the vent pipe should be insulated for at least 1m from their points of connection to the cylinder or they should be insulated up to the point where they become concealed e f secondary circulation is used all pipes kept hot by that circulation should be insulated For replacement systems whenever a boiler or hot water st
138. ustion air and or flue gases All types except inset live fuel effect 63 64 BS 7977 1 2002 Specification for safety and rational use of energy of domestic gas appliances Radiant convectors BS EN 613 2001 Independent gas fired convection heaters 58 60 BS EN 13278 2003 Open fronted gas fired independent space heaters 45 46 Inset live fuel effect 40 41 BS 7977 1 2002 Specification for safety and rational use of eneroy of domestic gas appliances Radiant convectors Flue less Thermal efficiency requirements for this prEN 14829 20034 Draft Independent gas fired flueless space heaters type of appliance are not specified as all for nominal heat input not exceeding 6kW the heat produced by the combustion process is released into the space to be Flue less heated In SAP 2005 the efficiency of BS EN 449 2002 Specification for dedicated liquefied petroleum gas appliances Domestic flueless space heaters including diffusive catalytic combustion heaters these appliances is classed as 9096 and an adiustment is made for ventilation in the space heating requirement calculation 2 6 Gas fired fixed decorative fuel effect fires This type of appliance is intended for decorative purposes and therefore a minimum thermal efficiency is not specified Note that for the purposes of SAP 2005 the efficiency of decorative fuel effect fires is classed as 2092 for use in the space heating requirement calculation see Table 4a
139. vessels including the vent pipe should be insulated for at least 1m from their points of connection to the cylinder or they should be insulated up to the point where they become concealed e f secondary circulation is used all pipes kept hot by that circulation should be insulated For replacement systems whenever a boiler or hot water storage vessel is replaced in an existing system any pipes in the situations above that are exposed as part of the work or are otherwise accessible should be insulated in accordance with the recommendations in this guide in line with the maximum permissible heat loss indicated in the Supplementary Information column and labelled accordingly or to some lesser standard where practical constraints dictate Insulation for pipework in unheated areas Extra provision may need to be made to protect central heating and hot water pipework in unheated areas against freezing Further guidance is available in BS 5422 2001 Method for specifying thermal insulating materials for pipes tanks vessels ductwork and equipment operating within the temperature range of 40 C to 700 C BRE Report No 262 Thermal insulation avoiding risks 2002 edition Where insulation is labelled as complying with the Domestic Heating Compliance Guide it must not exceed the following heat loss levels Pipe diameter OD Maximum permissible mm heat loss W m 8mm 7 06 10mm 7 23 12mm 7 3

Domestic Heating Compliance Guide, May 2006

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