Heating

Question 1

Where a heating system providing ducted warm air or supplying hot water or steam to pipes and radiators is in use, does the system incorporate a heat exchanger so as to prevent flammable vapours from coming into contact with an ignition source? Does hot water or steam circulate at a temperature not exceeding 120°C?

Answer 1

Heating must be suitable for the hazard zone in which the highly flammable or
flammable liquids are being stored or used.

Where a heating system providing ducted warm air or supplying hot water or steam to pipes and radiators is in use the system should incorporate a heat exchanger so as to prevent flammable vapours from coming into contact with an ignition source.

Any furnace or heat exchanger should be segregated and located either outside
the hazard zone or in a separate building of brick or concrete construction with a self-closing door to each opening. Combustion products should be exhausted to the open, clear of windows or other openings of the hazard zone. Hot water or steam should circulate at a temperature not exceeding 120°C

Question 2

Are electrical heaters of the low temperature flameproof type, certificated for the use in the relevant hazard zone, with the temperature of the external surface of such heaters not exceeding 120°C?

Answer 2

Electrical heaters should be of the low temperature flameproof type, certificated for the use in the relevant hazard zone. The temperature of the external surface of such heaters should not exceed 120°C.

Question 3

Does electrical underfloor or ceiling heating have heating elements totally embedded in concrete or employ air ducts to circulate hot air within the floor or ceiling?

Answer 3

Electrical underfloor or ceiling heating should have heating elements totally embedded in concrete or employ air ducts to circulate hot air within the floor or ceiling.