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Approved Document J

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• 2010 changes

2010 changes

The 2010 Edition of Approved Document J continues the principles of the 2002 Edition. The main changes to the legal requirements and technical guidance are described on the inside front cover of the Approved Document [Page 2 of 89 in the Online Version]. The main changes to the technical guidance are highlighted below.

2002 Edition	2010 Edition	Changes from 2002 to 2010 Edition
-	0.4 .13 : Equivalent area	New paragraph in the 2010 Edition. Subsequent paragraphs renumbered (+1) compared with the 2002 Edition.
0.4 .27 : Heat input rate	0.4 .28 : Heat input rate	Paragraph re-written.
0.4 .28 : Independantly certified	No equivalent	Paragraph omitted in the 2010 Edition. Subsequent paragraphs have the same number as the 2002 Edition.
-	0.4 .39 : Solid biofuel	New paragraph in the 2010 Edition. Subsequent paragraph renumbered (+1) compared with the 2002 Edition.
-	1.1.c : carbon monoxide warning	New paragraph in the 2010 Edition. Subsequent paragraphs renumbered (+1) compared with the 2002 Edition.
1.8 : Ventilation of other rooms	1.8 : Ventilation of other rooms	Approved Document F revised to Approve Document C.
-	1.47 : Concealed flues and Diagram 14 : Example locations ...	New paragraph and related diagram in the 2010 Edition. Subsequent paragraphs renumbered (+1) compared with the 2002 Edition.
Table 2 : Size of flues in chimneys	Table 2 : Size of flues in chimneys	Item for pellet burner or pellet boiler added.
Diagram 17 : Flue outlet positions	Diagram 17 : Flue outlet positions	Clarification of requirements.
2.12 : Outlets from flues	2.12 : Outlets from flues	Note on thatched roofs added.
-	Table 3 : Minimum performance designations ...	New table.
-	2.27 : Hearths	New paragraph in the 2010 Edition. Subsequent paragraphs in Section 2 renumbered (+1) compared with the 2002 Edition.
Table 3 : Prefabricated appliance chambers	Table 4 : Prefabricated appliance chambers	Renumbered, but content unchanged.
-	2.34 to 2.36 : Carbon monoxide alarms	New requirements in the 2010 Edition.
3.12 : Flued (DFE) fires	3.12 : Flued (DFE) fires	Revised to refer to "very airtight" buildings and the new Appendix F.
Diagram 32 : Free areas of permanently open air vents ...	Diagram 32 : Free areas of permanently open air vents ...	Note 5, referring to older dwellings, added.
Diagram 33 : Ventilation for flueless gas appliances	Diagram 33 : Ventilation for flueless gas appliances	Note 8, referring to doors that open directly to the outside, added.
Table 4 : Sizes of flues for gas-fired appliances	Table 5 : Sizes of flues for gas-fired appliances	Renumbered, but content unchanged.
3.23 : Outlets from flues	3.23 : Outlets from flues	Note added.
Table 5 : Minimum performance designations	Table 6 : Minimum performance designations	Renumbered, but content unchanged.
Table 6 : Protecting buildings from hot flues	Table 7 : Protecting buildings from hot flues	Renumbered, but content unchanged.
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