If a gas solenoid valve is closed in a commercial kitchen that is fitted with standard gas ovens and grills the gas appliances will no longer give off dangerous gases such as carbon monoxide. However where solid fuel appliances such as charcoal ovens and grilles are installed there is a possibility that the coals will continue to smoulder and therefore produce harmful carbon monoxide even when the appliance is no longer being used.
If the detectors alarm due to higher than normal levels of gases being present in the kitchen, the fans will be instantly boosted to full speed, even if the Merlin CT1750 system is turned in the “off” position. Once the gases have been cleared, the fans will be shut down, ensuring the kitchen doesn't incur any unnecessary running costs.