Open Flame Heaters and Gas Refrigerators

4

Open Flame Heaters and Gas Refrigerators

4.1

When such appliances are installed, they should be well secured to avoid movement and, preferably, be of a type where the gas flames are isolated in a totally enclosed shield where the air supply and combustion gas outlets are piped to open air.

4.2

In refrigerators, where the burners are fitted with flame arrester gauze, shielding of the flame may be an optional feature.

4.3

Refrigerators should be fitted with a flame failure device.

4.4

Flue-less heaters should be selected only if fitted with atmosphere-sensitive cut-off devices to shut off the gas supply at a carbon dioxide concentration of not more than 1.5% by volume.

4.5

Heaters of a catalytic type should not be used.