NeilV wrote:As I've already bought the califont and flue for my bus, please can you quote the reg that bans this option?
Matt has pointed out the regulation that says an installation is unsafe if it exposes people to CO.
The regulations also say that a caravan gas installation must be built to the standard AS/NZS5601.2. Section 2 of the standard is mandatory and section 2.9.1 says (in part)
Instantaneous water heaters shall not be installed in bedrooms or areas used for sleeping unless the water heater is of the room-sealed type. There shall be no ventilation openings or other connections between any area used for sleeping and any compartment in which an instantaneous water heater is located if the water heater is not of the room-sealed type.
NOTE: An area used for sleeping includes any combined living/sleeping area
This is a NZ only section, the Aussies ban califonts outright.
The prohibition on califonts is not unique to Australia and NZ, the North American and European caravan codes also do not allow them. So the majority of the western world does not allow their usage.
Why not hobs? I believe it is a risk management thing. There are alternatives to califonts so the standards call for those alternatives. So far nobody has invented a flued hob.