Building services for residential property – heating systems Flashcards
Liquid petroleum gas (LPG) building regulations
Approved document J sets out standards for thanks oversize commonly encountered in domestic property and for bottled gas storage
Location of LPG cylinders diagram
Oil heating systems
Regulated by OFTEC
The annual inspection by an OFTEC operative to look at a number of features including:
Physical condition of the installation (Tanks)
Internal oil thanks
Storage tanks can be located within a dwelling as long as they can form to the following:
OFTEC guide to domestic oil storage up to 3500 litres
Inspecting heating systems.
Hierarchy of inspection indicators
Types of certificate:
Appliances with ‘open flues’
If the appliance has an open flue, it is necessary to check if it has got an air supply for combustion purposes. This is different from a balanced flue which draws air in directly from the outside
Flueless gas appliances
Flueless gas fires discharge combustion products into the room. Ventilation is very important
Natural draft balanced flue diagram
Natural draft balanced flue is exchange and combustion products through the natural buoyancy of air and I’m not so efficient
Balanced flue – fanned
Find flues push the combustion products away from the boiler and so are usually more efficient
Diagram from part J of the building regulations showing the different minimum separation distances and help natural and fan flues are different
Table from part J of the building regulations showing the different minimum separation distances and help natural and fan flues are different
Condensing boiler diagram
Hierarchy of inspection indicators for solid fuel
Confirmation of the installation has been properly installed, periodically inspected, altered and maintained.
Evidence should include:
-Official HETAS inspection form fully completed with nine, address and HETAS registration number
– the contractor’s headed note paper and a description of what he has done
HETAS suggests chimneys should be swept at least twice a year.
More specific guidance:
Sufficient air supply for combustion purposes (open flue)
Building regulations benchmark
Proof of appropriate lining of the flue
This has been covered by building regulation since 2002, so you should ask for proof of lining for installation since that date
Appropriate flu position/termination
Useful questions to ask:
