Gas hob in kitchen without window

you can have 100sqcm vent instead

 

do you not have a door to the outside?

 

to satisfy the gas regs you need to either have an openable door or window to outside, if this it not possible you need to have permanent ventilation. If neither is possible you will have to fit electric

 

i am wrong sorry, you can have the extracter as long as it has a flow rate of 30l per second for hob or 60l per second elsewhere, and the fan needs a 15min overrun

 

The ventilation requirement is to allow fresh air in from the outside for the purposes of combustion (remember what happened to the candle under the jam jar in primary school?).

The extractor fan does the opposite, pulling products of that combustion process (inc smoke/steam/cooking smells) out of the room. so, without the fresh air coming in to replace that which is extracted, you would be like that candle, snuffed out.......

Patrick

 

You could use a ventilated ducting system that gets it's air from outside, this can be done under floor or along the walls.

You also need to take note of the room size as this will determine the actual size of vent/duct system that you will need.

 

neither is possible you will have to fit electric.

It's the building regs that matter here,it states that you must have an openable window,a hinged panel,adjustable louvre or other means of ventilation which communicates with outside air.

A vented ducting system would do the job tidy.

 

THE REGS STATE THAT THERE SHOULD BE AN OPENABLE WINDOW,DOOR OR LOUVER.
ALSO DEPENDING ON THE SIZE OF THE ROOM YOU MAY REQUIRE AN AIR VENT

 

THE REGS STATE THAT THERE SHOULD BE AN OPENABLE

WINDOW,DOOR OR LOUVER.

ALSO DEPENDING ON THE SIZE OF THE ROOM YOU MAY REQUIRE AN AIR VENT

Check your viper book again.

 

How can you have a kitchen with no exterior wall? Very unusual.

 

How can you have a kitchen with no exterior wall?
Very unusual.

er easily, depends on the architect really doesn't it? worked on a contract for 32 newbuild flats last year , the majority of which had kitchens with no exterior wall

 

Sad but very true - dodgy 80's London conversions spring up all sorts of nasties - cold water storage cisterns tucked under stairs with no access to ANY pipe connections or valves is a particular favourite of mine...?

 

if you cannot meet the normal ventilation requirements for gas appliances you can adopt the minimum building standards regs which say you should have 30l/min adjacent to the appliance or 60l/min if not adjacent. you also need a vent in the door or a 10-20mm gap at the bottom to provide replacement air. 30l/min usually equates to a 150mm wall fan, with a fairly straight exit to the building (not many bends)